four-channel sound system

- acoustic alarm system
- acoustic image system
- acoustic systems
- actiontrack system
- active IR-system
- actuator system
- adaptive communication system
- adaptive teleinformation system
- adaptive telemetering system
- advanced information system
- Afsatcom system
- air system
- aircraft intercommunication system
- airfield communication system
- air-ground automatic system
- airline reservation system
- air-to-ground TV system
- alarm signal system
- alarm system
- all-channel signaling system
- ALL-IN-ONE system
- alphanumeric system
- amplified speaker system
- amplitude shift-keying system
- AMPS system
- analog cellular communication system
- analog cellular system
- analog component video system
- analog television system
- analog tropospheric system
- anisochronous system
- antenna system
- antitheft system
- AR system
- Arabsat system
- ASK system
- associated channel analog system
- asynchronous address communication system
- audio recording system
- Aurora system
- Aussat system
- automatic communication system
- automatic connection establishment system
- automatic control system
- automatic data acquisition system
- automatic telegraphy system
- automatic telephone system
- automatic tuning system
- automatized cellular system
- auxiliary alarm system
- balanced cable transmission system
- band sharing system
- base station system
- baseband system
- basic input/output system
- bass-reflex speaker system
- batch processing system
- batch transmission system
- batch-and-forward system
- batteryless system
- bilateral CTV system
- binary tariff system
- biocontrol system
- bit parallel interface system
- bit transport system
- bridge duplex system
- broadband mobile system
- broadcast satellite system
- broadcasting delivery media systems
- burglar alarm system
- byte-serial interface system
- cabinet system
- cabinetless system
- cable distribution system
- cable TV system
- call-accounting system
- call-answering system
- call-counting system
- call-distributing system
- call-processing system
- call-queueing system
- camp-on system
- CAPTAIN system
- car component audio system
- carrier reinsertion system
- carrier system
- carrier-communication system
- carrier-current communication system
- Cassegrain-Schmidt system
- cassette recording system
- cassette reproducing system
- CATRIN system
- caution system
- CD 900 system
- cellular system
- cellular-radio system
- central-battery system
- centralized control system
- chirp binary telegraph system
- cipher system
- circuit switched telecommunication system
- circuit switching telecommunication system
- circular telecontrol system
- clock system
- closed-circuit communication system
- closed-circuit telegraph system
- closed-numbering system
- code-dependent system
- code-division multiple access system
- code-independent system
- code-insensitive system
- code-sensitive system
- coding system
- coherent fiber-optic system
- collimating system
- collocated system
- color separating system
- combined numbering system
- combined power supply system
- combined satellite communication system
- common-battery system
- common-carrier system
- common-channel signaling system
- common-engineering communication system
- common-purpose cellular system
- common-using band system
- common-using cordless telephone system
- common-using paging system
- communication system
- communication traffic system
- communications system
- community antenna system
- community antenna television system
- community TV-system
- commununication switching system
- compact disk digital audio system
- compatible color television system
- compatible single sideband system
- compatible single-band system
- compatible TV-system
- complex radio communication system
- computer vision system
- computer-telephone system
- Comsar system
- Comsat system
- Conax system
- concentrated-insonation system
- conference system
- conference-communication system
- congested system
- congress-class system
- constant-current system
- control generating system
- conventional television system
- Conversant system
- cordless-communication system
- crossbar system
- crossed-coincident microphone system
- Crosspoint system
- CSE system
- C-system
- cubical video projecting system
- data processing system
- data system
- data transport system
- data-collection system
- data-compression system
- data-exchange system
- dataflow system
- data-gathering system
- data-handling system
- data-measuring system
- data-reduction system
- data-transmission system
- Decca Navigator system
- DECfax system
- decision-feedback system
- dedicated control channel system
- dedicated multimedia system
- delta-sigma system
- deluxe presentation system
- departmental communication system
- desktop-video system
- DFS/Copernicus system
- dial-telephone system
- differential phase shift-keying system
- differential-duplex system
- differential-magnetic system
- digital camera system
- digital hybrid-key telephone system
- digital mass storage system
- digital microwave radio transmission system
- digital telephone communication system
- digital transmission system
- digital TV-communication system
- Digital UNIX system
- digital-analog system
- digital-cellular system
- digital-data modulation system
- digital-effect system
- digital-message entry system
- digital-termination system
- direct-broadcasting satellite system
- directing system
- direct-modulation system
- direct-sequence system
- direct-telephone communication system
- discrete communication system
- discrete sound system
- discrete-addressing system
- disk-operating system
- DISOSS system
- dispatch telephone communication system
- dispatch-center system
- dispersed-insonation system
- distributed-insonation system
- distributed-processing system
- documental-type communication system
- Dolby systems
- domestic satellite communication system
- double-band telephone communication system
- double-channel transmission system
- double-current transmission system
- double-pole communication system
- double-sideband large carrier system
- DSCS system
- D-system
- dual-cable system
- dual-reflector system
- duplexed system
- Earth-to-space transmission system
- ECM system
- electric communication system
- electronic antishock system
- electronic data-gathering system
- electronic data-processing system
- electronic-message system
- electronic-scanning system
- electronic-switching system
- Ellipso system
- emergency telephone communication system
- emergency-broadcast system
- EMX system
- equidistant system
- error-correction system
- error-detection system
- Eutelsat system
- extensible system
- external paging system
- facsimile system
- fast-acting servicing system
- fault-tolerant system
- fax communication system
- fax transmitting system
- feed system
- fiber transmission system
- fiber-optic transmission system
- field-sequential system
- final mile system
- finishing system
- fire alarm system
- fire warning system
- first generation cellular system
- five-channel communication system
- fixed satellite system
- Flexcam system
- flexible access system
- Flitsatcom system
- focusing system
- four-channel sound system
- four-dimensional system
- four-wire telephone communication system
- frame-sequential system
- frequency shift-keying system
- frequency-carrier system
- frequency-control system
- front-bass reflex speaker system
- fully digital system
- gate system
- Gaussian system
- generalized system
- generating dynamic system
- generator-dc-motor system
- GIGASET radio system
- global positioning system
- Global system
- Gopher system
- grandfathered system
- group-alerting and dispatching system
- guide system
- hard-wired CCTV system
- hazard system
- helical-scan system
- HF-synchronizing system
- high-precision navigating system
- Hi-linear system
- home system
- home-telephone system
- home-type system
- homing-guidance system
- host system
- hydroacoustic system
- ideal communication system
- idealized system
- image informaion system
- image-forming system
- immedial servicing system
- incompatible system
- independent system
- information retrieval system
- information system radio system
- information system
- information-feedback system
- information-measuring system
- infrared alarm system
- Inmarsat system
- Inmarsat-A system
- Inmarsat-B system
- Inmarsat-C system
- Inmarsat-D system
- Inmarsat-M system
- Inmarsat-P system
- integrated telephone system
- integrated videographic teleconferencing system
- integrated-antenna system
- integrated-communication system
- integrated-modulation system
- integrated-office system
- Intelsat system
- interactive system
- intercarrier-sound system
- intercommunication system
- intercontinental tropospheric system
- interlock system
- intermachine exchange system
- intermediate system
- international communication system
- interphone system
- Intervision system
- intraband signaling system
- intruder alarm system
- inward-outward dialing system
- ionoscatter system
- ionosphere sounder system
- ionospheric system
- Iridium system
- isolated system
- Italsat system
- J-carrier system
- joint-multichannel trunking and switching system
- K-carrier system
- key system
- key-telephone system
- land satellite communication system
- large-grained communication system
- laser communication system
- L-band satellite system
- L-carrier system
- Leasat system
- lightning protection system
- limited distortion system
- line amplifiers system
- link system
- little-channel relay system
- local alarm system
- local battery system
- local communication system
- local radio paging system
- long-haul system
- long-range system
- loop system
- loud-speaking communication system
- low-traffic system
- magnetic tape recording system
- Mail system
- management-information system
- manual cellular system system
- manual telephone set system
- Marisat system
- master television system
- master-antenna television system
- matrix sound system
- message feedback system
- message procession system
- message registration system
- message-switched system
- meteor radio system
- Metrobus system
- micro component system
- Micro Press Cluster Printing system
- micro-lens system
- microprocessor system
- microwave relay system
- midi system
- mine radio telephone system
- mini system
- mixed media system
- mixed numbering system
- mobile cellular communication system
- mobile land communication system
- mobile radio system
- mobile relay system
- mobile system
- modulated system
- monetary mobile system
- MS-Mail system
- multiareal system
- multicassette system
- multichannel telephone system
- multicomputer system
- multidisk system
- multiformat recording system
- multifrequency tone signaling system
- multiguard system
- multilevel mixed system
- multimedia system
- multiple-channel system
- multiqueue system
- Multiscrypt system
- multistandard system
- multitrack editing system
- mutibeam antenna system
- muting system
- Nagravision system
- NAMTS system
- narrow-angle TV system
- national communication system
- navigation system
- n-channel communication system
- n-channel DPSK system
- n-channel transmission system
- network standalone system
- network system
- network-operation system
- networks numbering system
- neutral direct-current telegraph system
- n-head video system
- NMT system
- noise-reduction system
- nonhoming tuning system
- noninterlaced television system
- nonsegmented system
- Norsat system
- n-satellite system system
- n-tone DPSK system
- n-tone MFSK system
- NTSC system
- NTT system
- obligatory message system
- Odyssey system
- off-line system
- on-line computer system
- on-line secured system
- open numbering system
- open system
- operative-engineering communication system
- opposite signals system
- optical-communication system
- optical-information system
- optical-projection system
- optoelectronic system
- oscillating system
- oscillation system
- outband signaling system
- package-and-resource tracking system
- pagemaster system
- paging system
- PAL system
- parametric system
- PATHWORKS system
- pattern recognition system
- personal holding guard system
- phase shift-keying system
- phone system
- Piccolo system
- pilot-controller system
- polar direct-current telegraph system
- portable mobile system
- power control system
- power controlling system
- power-line carrier system
- power-supply system
- press-to-talk system
- Prestel system
- primary-supply system
- privacy system
- private branch paging system
- private movable system
- private videodata system
- private videotex system
- process-interface system
- PROFS system
- programmable cross-connect system
- programmable cross-connected system
- programmed radio system
- prompting system
- protected wireline distribution system
- protection system
- pseudoquadraphony system
- pseudotrunking system
- public videodata system
- public videotex system
- pulse-code system
- pulse-frequency system
- pulse-time system
- quadraphonic sound system
- quadruple-diversity system
- R1 system
- R2 system
- radio buoy system
- radio command system
- radio communication system
- Radio Data system
- radio facsimile system
- Radiocom 2000 system
- radio-control system
- radio-paging system
- radio-relay system
- radiosonde-radio-wind system
- radio-telemetering system
- real time pulse-echo system
- real time system
- receiver lockout system
- recording system
- recovery system
- redundant system
- reference-information system
- regional electronic payment system
- relay-radio system
- remote concentrating system
- remote control system
- remote diagnostic system
- remote information system
- remote semiconcentrating system
- remote sensing system
- remote signaling system
- rendering system
- rerecording system
- reserved servicing system
- RF/Transmission system
- rotary system
- safety alarm system
- safety system
- Satcom system
- satellite comminication system
- satellite marine comminication system
- Satellite Master Antenna Television system
- satellite radio system
- satellite-aircraft communication system
- SB-communication system
- SBL communication system
- scalable system
- scanning trunking system
- SCO UNIX system
- searchless identification system
- seat reservation system
- SECAM system
- second generation cellular system
- second room system
- secondary supply system
- secrecy system
- section communication system
- security system
- segmented system
- seismic system
- selective calling system
- selective frequency base station system
- selective protective system
- selective telephone system
- self-adjusting system
- self-balancing differential system
- self-contained system
- self-test system
- selsyn system
- semiautomatic-switching system
- semiautomatized cellular system
- sensory system
- servo system
- shadow-batch system
- short-haul microwave system
- Sicral system
- Sigma Servo system
- signal system
- simplex movable system
- single-band transmission system
- single-busbar system
- single-cable communication system
- single-cable system
- single-channel system
- single-current transmission system
- single-pulse tracking system
- Skynet system
- small-grained communication system
- SmarTrunk II radio communication system
- solid-state uninterruptible power battery system
- Sony bus system
- sound alarm system
- sound equalization system
- sound navigation system
- sound reinforcement system
- sound warning system
- space-division system
- space-switched system
- spark-safe system
- speaker system
- special communication system
- speech-processing system
- speech-recognition system
- split-speaker system
- spread-spectrum system
- stabilizing system
- stage monitoring system
- standalone double point system
- star-circuit system
- STAREX CMX system
- starting communication system
- start-stop system
- stationary satellite system
- step-by-step system
- stereo sound system
- stereophonic sound system
- storage system
- storage-and-retrieval system
- Strowger system
- submarine fiber-optic system
- subprimary digital transmission system
- subscriber carrier system
- subscriber switching system
- suffix system
- Supersat system
- supervisory control system
- surround sound system
- switched telecommunication system
- switching system
- sync communication system
- synchro system
- synchronous communication system
- synchronous digital system
- TAGS system
- tandem system
- tariffication system
- T-carrier system
- TDF system
- teleautomatic system
- Telecom system
- telecommunication system
- telecommunications system
- telecommunication-service priority system
- telecommunications-service priority system
- telecontrol system
- telemechanic system
- telemetering system
- telemetry system
- telephone system
- telephone-answering system
- telephone-communication system
- telephone-communications system
- teleprocessing system
- Telesat system
- teletex system
- teletypewriter system
- television-telephone system
- Tele-X system
- Telsar system
- terminal system
- terrestrial radio-relay system
- theft-prevention system
- thin-route system
- third generation communication system
- three-axle stabilizing system
- three-channel HF-telephone system
- three-channel transmission system
- three-color system
- three-lens optical system
- three-primary system
- three-wire system
- time-dissemination system
- time-frequency hopping system
- time-switched system
- total access communication system
- total area coverage system
- transmission system
- trichromatic system
- triple-interlace system
- triplex system
- trunk communication system
- TV-observation system
- twelve-channel transmission system
- two-arm system
- two-band system
- two-color system
- two-roller transfer system
- two-step control system
- two-way CATV system
- two-way system
- two-wire telephone communication system
- ultra-match system
- ULTRIX system
- unified radioaccess system
- unilateral-control system
- unilateral-synchronization system
- uninterruptible-power system
- Unisat system
- universal alarm system
- universal-battery system
- universal-electronic system
- universal-movable system
- Uniworks system
- vestigial-sideband system
- video editing system
- video home system
- video recording system
- videocom system
- videoteleconference system
- videotex system
- virtual studio system
- vision system
- vocoder system
- voice dialog system
- voice frequency carrier telegraph system
- voice modulation system
- voice post system
- volume control system
- waiting system
- warning system
- watch system
- watching system
- waterside facsimile communication system
- wave-propagating system
- wide-angle TV system
- Winfax Pro system
- wired broadcasting system
- wireless CCTV system
- wireless home system
- wireless infrared speaker system
- wire-radio communication system
- XY system
- zone-selective protection system
- zoning system

- active antinoise system
- active damping system
- air brake system
- air gulp system
- air induction system
- air intake system
- air-assisted braking system
- air-conditioning system
- air-over-hydraulic brake system
- alarm system
- American light distribution system
- antidive system
- antilock brake system
- antinoise system
- antiskid system
- antisquat system
- antitheft alarm system
- antitheft system
- audio warning system
- automatic braking system
- automatic climate control system
- automatic closing system
- automatic level control system
- automatic leveling control system
- automotive system
- auxiliary system
- ballast ignition system
- body mounting system
- brake system
- breakerless ignition system
- breakerless transistorized ignition system
- capacitor ignition system
- car audio system
- car navigation system
- car security system
- central door locking system
- central fuel injection system
- central lubrication system
- central tire inflation system
- child restraint system
- climate control system
- closed cooling system
- closed evaporation system
- cold start system
- collision warning system
- continuous fuel injection system
- control system
- controlled combustion system
- cooling system
- crankcase ventilation system
- crash avoidance system
- cruise-control system
- damper control system
- damping system
- diagnostic system
- diagonal-split dual circuit braking system
- direct acting system
- distributor-less ignition system
- dual braking system
- dual circuit brake system
- dual exhaust system
- electronic brake system
- electronic ignition system
- electronic load-leveling system
- electronic map ignition system
- emergency brake system
- emission control system
- engine management system
- engine mount system
- European light distribution system
- exhaust system
- four-channel antilock brake system
- fuel supply system
- fuel system
- fuel vapor recirculation system
- gas-storage system
- heating system
- heating, ventilation and air conditioning system
- highway system
- hydraulic brake system
- idle system
- ignition system
- indicating system
- induction system
- inductive ignition system
- inertia braking system
- injection and ignition system
- injection system
- insulated-return electric system
- intake system
- keyless entry system
- lighting system
- lubricating system
- metering system
- microprocessor spark timing system
- modular system
- mounting system
- multipoint fuel injection system
- occupant restraint system
- on-board diagnostic system
- open evaporation system
- parking brake system
- passenger-protection system
- pneumatic brake system
- pneumatic system
- pointless ignition system
- powertrain control system
- pre-heater system
- preheating system
- pressurized cooling system
- primary braking system
- programmable fuel injection system
- radio antitheft system
- regenerative braking system
- restraint system
- sealed system
- seat adjustment system
- secondary brake system
- self-diagnosis system
- sequential fuel injection system
- service brake system
- side impact protection system
- single-line brake system
- sound system
- speed-control system
- split brake system
- stability management control system
- starting system
- steering system
- swapbody system
- tire-pressure monitoring system
- traction-control system
- twin circuit brake system
- two-line brake system
- unit replacement system
- unloading system
- vehicle navigation system
- vehicle-dynamics control system
- ventilation system
- warning system

- acoustic amplifier
- adder amplifier
- all-pass amplifier
- all-purpose amplifier
- all-radial amplifier
- antenna amplifier
- aperiodic amplifier
- audio-distribution amplifier
- audio-frequency amplifier
- audio-video amplifier
- automatic stereophonic recording amplifier
- auxiliary amplifier
- AV-amplifier
- average power amplifier
- backward-wave amplifier
- B-amplifier
- bandpass amplifier
- base amplifier
- beam-parametric amplifier
- binaural-power amplifier
- bioelectric-potential amplifier
- bistable amplifier
- bootstrap amplifier
- branching amplifier
- bridge magnetic amplifier
- bridging amplifier
- broadband amplifier
- broadcasting amplifier
- buck-boost amplifier
- buffer amplifier
- bullet amplifier
- burst amplifier
- calibrated amplifier
- camera amplifier
- capacitor-coupled amplifier
- carrier amplifier
- cascade-coupled amplifier
- cascaded amplifier
- cathode-coupled amplifier
- cavity-type diode amplifier
- ceramic amplifier
- channel amplifier
- choke amplifier
- chopper-stabilized amplifier
- chroma-bandpass amplifier
- chrominance amplifier
- clamped amplifier
- class-A amplifier
- class-AB amplifier
- class-B amplifier
- class-C amplifier
- class-D amplifier
- class-E amplifier
- class-F amplifier
- clipper amplifier
- coaxial amplifier
- coherent-light amplifier
- coincidence amplifier
- cold-cathode amplifier
- color-burst amplifier
- common-collector amplifier
- common-drain amplifier
- common-emitter amplifier
- common-gate amplifier
- common-source amplifier
- compensated amplifier
- compressor amplifier
- conference amplifier
- continuous-signal amplifier
- controlled amplifier
- controlling amplifier
- convertor amplifier
- correcting-antenna amplifier
- coupling amplifier
- cross-field amplifier
- current amplifier
- dc amplifier
- dc power amplifier
- dc restoration amplifier
- deflection amplifier
- degenerate amplifier
- degenerative amplifier
- delay amplifier
- dielectric amplifier
- differential amplifier
- differentiating amplifier
- differentiation amplifier
- digital sound processor amplifier
- digital sound-field processor amplifier
- digitally-controlled amplifier
- diode amplifier
- direct resistance-coupled amplifier
- direct-communication amplifier
- distribution amplifier
- DMB-amplifier
- Doherty amplifier
- double-circuit amplifier
- double-stream amplifier
- double-tuned amplifier
- drift-compensated amplifier
- drift-corrected amplifier
- drift-free amplifier
- driver amplifier
- dual-operational amplifier
- dual-trace amplifier
- duct amplifier
- duplex amplifier
- earlike-response amplifier
- electric-organ amplifier
- electrometric amplifier
- electron-beam amplifier
- electronically-tunable amplifier
- electron-tube amplifier
- elementary amplifier
- end amplifier
- error amplifier
- error-signal amplifier
- extender amplifier
- fader amplifier
- fast-operating amplifier
- feedback amplifier
- feedforward amplifier
- ferrite amplifier
- ferromagnetic amplifier
- fiber-optic system amplifier
- field amplifier
- field-input amplifier
- filter amplifier
- final amplifier
- fixed-gain amplifier
- flat amplifier
- flat-staggered amplifier
- flip-flop amplifier
- follow-up amplifier
- forming amplifier
- forward-wave amplifier
- four-channel power amplifier
- four-stage amplifier
- frame amplifier
- frequency-selective amplifier
- functional amplifier
- gain-matched amplifier
- gain-stabilized amplifier
- galvanic amplifier
- G-amplifier
- gated amplifier
- generator amplifier
- grounded-anode amplifier
- grounded-base amplifier
- grounded-cathode amplifier
- grounded-collector amplifier
- grounded-drain amplifier
- grounded-emitter amplifier
- grounded-gate amplifier
- grounded-grid amplifier
- grounded-plate amplifier
- group amplifier
- group reception amplifier
- group transmission amplifier
- guitar amplifier
- Gunn amplifier
- half-wave amplifier
- head amplifier
- heterodyne amplifier
- Hi-Fi amplifier
- high-current power amplifier
- high-frequency amplifier
- home theater amplifier
- horizontal amplifier
- IF amplifier
- image amplifier
- image-rejecting intermediate amplifier
- IMPATT amplifier
- inductance amplifier
- input amplifier
- instrumentation amplifier
- integrated amplifier
- integrating amplifier
- intensity amplifier
- intermediate-frequency amplifier
- intermediate-power amplifier
- interphone amplifier
- inverting amplifier
- isolating amplifier
- klystron amplifier
- laser amplifier
- launch amplifier
- light amplifier
- limiter amplifier
- limiting amplifier
- line amplifier
- line frequency amplifier
- line power amplifier
- line voltage amplifier
- linear amplifier
- lin-log amplifier
- listening amplifier
- lock-in amplifier
- locomotive receiver amplifier
- logarithmic amplifier
- loud-speaking announcement amplifier
- low-frequency amplifier
- low-noise amplifier
- low-power amplifier
- luminance amplifier
- magnetic amplifier
- magnetron amplifier
- main amplifier
- maser amplifier
- master oscillator amplifier
- matched amplifier
- matrix amplifier
- measuring amplifier
- microphone amplifier
- microstrip amplifier
- microwave amplifier
- mixing amplifier
- modulated amplifier
- monaural power amplifier
- monitoring amplifier
- monolithic amplifier
- multichannel amplifier
- multistage amplifier
- narrow-band amplifier
- narrow-gate amplifier
- n-channel amplifier
- negative resistance amplifier
- negatron amplifier
- noiseless amplifier
- noise-suppressing amplifier
- noncooled amplifier
- nondegenerate amplifier
- noninverting amplifier
- nonlinear amplifier
- note amplifier
- n-stage amplifier
- operating amplifier
- operation amplifier
- optical amplifier
- optoelectronic amplifier
- output amplifier
- overdriven amplifier
- packaged amplifier
- paging amplifier
- parallel amplifier
- paramagnetic amplifier
- parametric amplifier
- paraphase amplifier
- peaked amplifier
- personal tone amplifier
- phase sensor amplifier
- photocurrent amplifier
- pip amplifier
- plasma amplifier
- playback amplifier
- plug-in amplifier
- power amplifier
- precision amplifier
- printed-circuit amplifier
- processing amplifier
- program amplifier
- pulse-distribution amplifier
- push-pull electret amplifier
- push-pull magnetic amplifier
- quadrature amplifier
- quantum amplifier
- radio-frequency amplifier
- Raman amplifier
- R-amplifier
- RC-coupled amplifier
- reactance amplifier
- read amplifier
- reception amplifier
- reciprocal amplifier
- recording amplifier
- recuperative amplifier
- reflecting amplifier
- regenerative amplifier
- remote-tuned amplifier
- repeating amplifier
- reproducing amplifier
- resistance-capacitance amplifier
- resonance amplifier
- resonant amplifier
- reversed-feedback amplifier
- RF-amplifier
- rotary amplifier
- rotating amplifier
- running wave lamp amplifier
- saturated amplifier
- selective amplifier
- self-feedback amplifier
- sense amplifier
- separate amplifier
- series amplifier
- sharpener amplifier
- SHF-amplifier
- signal-shaping amplifier
- simplest amplifier
- simplex amplifier
- single-ended amplifier
- single-frequency amplifier
- single-section amplifier
- single-sideband amplifier
- single-sided amplifier
- single-stage amplifier
- single-step amplifier
- single-tuned amplifier
- slicer amplifier
- solid-state amplifier
- sound frequency amplifier
- source-follower amplifier
- speech amplifier
- square-low amplifier
- square-wave amplifier
- stabilized amplifier
- stable amplifier
- stagger-tuned amplifier
- stereo/mono power amplifier
- straight amplifier
- strip-line amplifier
- studio amplifier
- subscriber amplifier
- Suhl amplifier
- summing amplifier
- super-recuperative amplifier
- supersonic amplifier
- surface-acoustic-wave amplifier
- sweep amplifier
- tandem amplifier
- tapered amplifier
- telephone-repeater amplifier
- terminal amplifier
- TFT-amplifier
- threshold amplifier
- time-shared amplifier
- track-and-hold amplifier
- transceiving amplifier
- transferred-electron amplifier
- transformer amplifier
- transformer-coupled amplifier
- transimpedance amplifier
- transistor amplifier
- transmission-type amplifier
- transmitter amplifier
- traveling wave amplifier
- tuned amplifier
- tunnel diode amplifier
- TV-antenna amplifier
- two-channel playback amplifier
- two-step amplifier
- two-way amplifier
- ultralinear amplifier
- unloading amplifier
- untapered amplifier
- utility video amplifier
- vacuum-tube amplifier
- valve amplifier
- variable transmitter amplifier
- video amplifier
- video-frequency amplifier
- voltage amplifier
- voltage-controlled amplifier
- volume-limiting amplifier
- vortex amplifier
- wide-band amplifier
- writing amplifier
- X-amplifier
- X-axis amplifier
- Y-amplifier
- Y-axis amplifier
- zero-phase drift amplifier

- ablative recording
- AC bias recording
- advanced digital recording
- alloy formation recording
- analog recording
- audio recording
- azimuthal recording
- azo dye facsimile recording
- black recording
- boot recording
- bubble formation recording
- carbon-pressure recording
- CD-4 disk recording
- CD-4 system disk recording
- color change recording
- compensation-point recording
- compensation-point thermomagnetic recording
- constant-amplitude recording
- constant-velocity recording
- Curie-point recording
- Curie-point thermomagnetic recording
- digital recording
- digital disk recording
- digital sound recording
- direct recording
- discrete recording
- disk recording
- dual-track recording
- dye polymer recording
- easy auto CD recording
- electrochemical recording
- electrographic recording
- electrolytic recording
- electromechanical recording
- electron-beam recording
- electrostatic recording
- electrothermal recording
- embossed-groove recording
- facsimile recording
- fan-beam recording
- FM recording
- four-channel disk recording
- four-track recording
- frequency-modulation recording
- frost recording
- full-track recording
- group-coded recording
- half-track recording
- helical recording
- helical scan recording
- high-density digital recording
- hill-and-dale recording
- holographic recording
- ID-less recording
- ink-vapor recording
- instantaneous recording
- kinescope recording
- lacquer recording
- lateral recording
- line-scan recording
- logical recording
- longitudinal recording
- longitudinal video recording
- magnetic recording
- magnetooptical recording
- magnetostatic recording
- mail exchange recording
- master recording
- master boot recording
- matrix recording
- mechanical recording
- microwave hologram recording
- mist recording
- mono recording
- multitrack recording
- MX recording
- nature recording
- near-field recording
- nonreturn-to-zero recording
- optical recording
- outdoor recording
- perpendicular recording
- phase change recording
- phase-encoded recording
- phase transition recording
- photographic recording
- photosensitive recording
- physical recording
- polarized recording
- pulse recording
- quadraphonic recording
- quadruplex recording
- quarter-track recording
- reference recording
- return-to-zero recording
- segment recording
- sine-wave recording
- sound recording
- sound-on-film recording
- sound-on-sound recording
- source recording
- stereo recording
- stereodisk recording
- strip-chart recording
- television film recording
- texture change recording
- thermal recording
- thermomagnetic recording
- thermoplastic recording
- transverse recording
- two-head recording
- two-track recording
- vertical recording
- vertical-lateral recording
- video recording
- video tape recording
- voice operated recording
- white recording
- wire recording
- xerographic recording
- zoned recording
- zoned bit recording

- AC bias recording
- advanced digital recording
- alloy formation recording
- analog recording
- audio recording
- azimuthal recording
- azo dye facsimile recording
- black recording
- boot recording
- bubble formation recording
- carbon-pressure recording
- CD-4 disk recording
- CD-4 system disk recording
- color change recording
- compensation-point recording
- compensation-point thermomagnetic recording
- constant-amplitude recording
- constant-velocity recording
- Curie-point recording
- Curie-point thermomagnetic recording
- digital disk recording
- digital recording
- digital sound recording
- direct recording
- discrete recording
- disk recording
- dual-track recording
- dye polymer recording
- easy auto CD recording
- electrochemical recording
- electrographic recording
- electrolytic recording
- electromechanical recording
- electron-beam recording
- electrostatic recording
- electrothermal recording
- embossed-groove recording
- facsimile recording
- fan-beam recording
- FM recording
- four-channel disk recording
- four-track recording
- frequency-modulation recording
- frost recording
- full-track recording
- group-coded recording
- half-track recording
- helical recording
- helical scan recording
- high-density digital recording
- hill-and-dale recording
- holographic recording
- ID-less recording
- ink-vapor recording
- instantaneous recording
- kinescope recording
- lacquer recording
- lateral recording
- line-scan recording
- logical recording
- longitudinal recording
- longitudinal video recording
- magnetic recording
- magnetooptical recording
- magnetostatic recording
- mail exchange recording
- master boot recording
- master recording
- matrix recording
- mechanical recording
- microwave hologram recording
- mist recording
- mono recording
- multitrack recording
- MX recording
- nature recording
- near-field recording
- nonreturn-to-zero recording
- optical recording
- outdoor recording
- perpendicular recording
- phase change recording
- phase transition recording
- phase-encoded recording
- photographic recording
- photosensitive recording
- physical recording
- polarized recording
- pulse recording
- quadraphonic recording
- quadruplex recording
- quarter-track recording
- recording of sound
- reference recording
- return-to-zero recording
- segment recording
- sine-wave recording
- sound recording
- sound-on-film recording
- sound-on-sound recording
- source recording
- stereo recording
- stereodisk recording
- strip-chart recording
- television film recording
- texture change recording
- thermal recording
- thermomagnetic recording
- thermoplastic recording
- transverse recording
- two-head recording
- two-track recording
- vertical recording
- vertical-lateral recording
- video recording
- video tape recording
- voice operated recording
- white recording
- wire recording
- xerographic recording
- zoned bit recording
- zoned recording