129:
32:
469:
1203:
204:(when current is drawn from the output there is minimal change in the output voltage). It is used to boost the signal strength to drive the cable to the main instrument without significantly degrading the
1131:
1121:
711:
501:
536:
164:. Without this, the final signal would be noisy or distorted. They are typically used to amplify signals from analog sensors such as
359:
The circuit inside of a hard drive connected to the magnetic heads or the circuit inside of CD/DVD drive which connects to the
212:, when the gain of the preamplifier is high, the SNR of the final signal is determined by the SNR of the input signal and the
1182:
473:
96:
68:
156:
into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a
731:
115:
75:
546:
716:
308:, which is then sent to the power amplifier. With instrument amplifiers, the preamp is often designed to produce
1227:
494:
53:
82:
901:
526:
49:
1096:
921:
838:
762:
600:
181:
1116:
531:
406:
375:
64:
1232:
863:
772:
1086:
984:
964:
805:
630:
569:
487:
396:
269:
1207:
1177:
209:
380:
Due to its unique coloration, some preamplifiers can be emulated in software to be used in mixing.
595:
42:
20:
338:
853:
767:
346:
226:
205:
994:
959:
605:
580:
305:
149:
426:
89:
8:
678:
390:
298:
177:
1045:
848:
663:
658:
564:
367:
309:
193:
133:
244:
In an audio system, they are typically used to amplify signals from analog sensors to
916:
800:
777:
638:
153:
128:
1091:
1030:
989:
896:
873:
843:
688:
648:
518:
510:
401:
353:
320:
257:
232:
201:
1065:
1040:
1025:
926:
911:
886:
615:
610:
446:
431:
249:
200:(requiring only a minimal amount of current to sense the input signal) and a low
197:
169:
157:
1101:
1060:
1055:
1050:
1010:
828:
823:
559:
277:
1221:
1188:
1157:
858:
792:
736:
706:
643:
620:
554:
327:
931:
891:
833:
726:
696:
653:
575:
213:
1172:
1167:
1126:
1111:
1035:
1020:
979:
936:
752:
331:
261:
260:
gain. The power amplifier provides the higher current necessary to drive
208:(SNR). The noise performance of a preamplifier is critical. According to
161:
19:"Preamp" redirects here. For the device used in professional audio, see
1162:
1152:
969:
757:
721:
590:
585:
360:
342:
316:
285:
273:
265:
245:
165:
782:
701:
350:
31:
974:
951:
941:
881:
668:
479:
281:
1070:
815:
253:
172:. Because of this, the preamplifier is often placed close to the
16:
Electronic amplifier that converts weak signal into strong signal
468:
173:
276:. Preamplifiers are often integrated into the audio inputs on
1136:
1106:
370:
circuit used to null the effects of mismatch offset in most
906:
371:
673:
1015:
56:. Unsourced material may be challenged and removed.
256:gain (e.g., from 10 mV to 1 V) but no significant
219:Three basic types of preamplifiers are available:
1219:
192:An ideal preamp will be linear (have a constant
495:
264:. For these systems, some common sensors are
1122:Professional Lighting and Sound Association
712:Comparison of analog and digital recording
502:
488:
439:
116:Learn how and when to remove this message
288:. They can also be stand-alone devices.
252:(power amp). The preamplifier provides
196:through its operating range), have high
127:
1220:
297:The integrated preamplifier in a foil
248:. The second amplifier is typically a
1183:New Interfaces for Musical Expression
483:
330:or channel strip built into an audio
509:
54:adding citations to reliable sources
25:
13:
14:
1244:
732:Reel-to-reel audio tape recording
461:
132:An example of a typical high-end
1201:
467:
239:
30:
717:Experimental musical instrument
41:needs additional citations for
432:Merriam-Webster.com Dictionary
419:
315:A stand-alone unit for use in
223:current-sensitive preamplifier
187:
1:
902:Electronic musical instrument
412:
233:charge-sensitive preamplifier
1208:Record production portal
1097:Institute of Broadcast Sound
376:analog-to-digital converters
7:
1117:Musical Electronics Library
407:Logarithmic resistor ladder
384:
291:
10:
1249:
864:Sound reinforcement system
773:Sound reinforcement system
18:
1197:
1145:
1087:Audio Engineering Society
1079:
1003:
985:Software effect processor
965:Digital audio workstation
950:
872:
814:
806:Digital signal processing
791:
745:
687:
629:
570:Digital audio workstation
545:
517:
397:Instrumentation amplifier
326:As part of a stand-alone
176:to reduce the effects of
1178:Professional audio store
1080:People and organizations
1066:Sound recording engineer
596:Microphone preamplifier
374:comparator-based flash
304:The first stages of an
21:Microphone preamplifier
537:Electronic and digital
447:"Definition of preamp"
312:or distortion effects.
137:
1228:Electronic amplifiers
227:parasitic-capacitance
216:of the preamplifier.
206:signal-to-noise ratio
152:that converts a weak
131:
995:Software synthesizer
960:Digital audio editor
746:Playback transducers
606:Multitrack recording
476:at Wikimedia Commons
341:amplifier used with
306:instrument amplifier
150:electronic amplifier
50:improve this article
474:Audio preamplifiers
391:Low-noise amplifier
299:electret microphone
1046:Re-recording mixer
849:Keyboard amplifier
565:Binaural recording
435:. Merriam-Webster.
368:switched capacitor
270:instrument pickups
144:, also known as a
138:
1233:Audio engineering
1215:
1214:
1021:Guitar technician
917:Music workstation
801:Digital recording
778:Speaker enclosure
697:8-track cartridge
639:Phonograph record
472:Media related to
154:electrical signal
126:
125:
118:
100:
1240:
1206:
1205:
1204:
1092:Goji Electronics
1031:Monitor engineer
990:Software sampler
897:Electronic drums
874:Electronic music
844:Guitar amplifier
689:Analog recording
649:Compact cassette
611:Music production
519:Music technology
511:Music technology
504:
497:
490:
481:
480:
471:
455:
454:
443:
437:
436:
423:
402:Buffer amplifier
321:recording studio
202:output impedance
121:
114:
110:
107:
101:
99:
58:
34:
26:
1248:
1247:
1243:
1242:
1241:
1239:
1238:
1237:
1218:
1217:
1216:
1211:
1202:
1200:
1193:
1141:
1075:
1041:Record producer
1026:Mixing engineer
999:
946:
912:MIDI controller
887:Circuit bending
868:
810:
787:
763:Monitor speaker
741:
683:
631:Recording media
625:
616:Music sequencer
601:Monitor speaker
547:Sound recording
541:
513:
508:
464:
459:
458:
445:
444:
440:
425:
424:
420:
415:
387:
294:
278:mixing consoles
250:power amplifier
242:
210:Friis's formula
198:input impedance
190:
158:power amplifier
122:
111:
105:
102:
59:
57:
47:
35:
24:
17:
12:
11:
5:
1246:
1236:
1235:
1230:
1213:
1212:
1198:
1195:
1194:
1192:
1191:
1186:
1180:
1175:
1170:
1165:
1160:
1155:
1149:
1147:
1146:Related topics
1143:
1142:
1140:
1139:
1134:
1129:
1124:
1119:
1114:
1109:
1104:
1102:Lejaren Hiller
1099:
1094:
1089:
1083:
1081:
1077:
1076:
1074:
1073:
1068:
1063:
1061:Sound operator
1058:
1056:Sound follower
1053:
1051:Sound designer
1048:
1043:
1038:
1033:
1028:
1023:
1018:
1013:
1011:Audio engineer
1007:
1005:
1001:
1000:
998:
997:
992:
987:
982:
977:
972:
967:
962:
956:
954:
948:
947:
945:
944:
939:
934:
929:
924:
919:
914:
909:
904:
899:
894:
889:
884:
878:
876:
870:
869:
867:
866:
861:
856:
851:
846:
841:
836:
831:
829:Bass amplifier
826:
824:Mixing console
820:
818:
812:
811:
809:
808:
803:
797:
795:
789:
788:
786:
785:
780:
775:
770:
765:
760:
755:
749:
747:
743:
742:
740:
739:
734:
729:
724:
719:
714:
709:
704:
699:
693:
691:
685:
684:
682:
681:
676:
671:
666:
661:
656:
651:
646:
641:
635:
633:
627:
626:
624:
623:
618:
613:
608:
603:
598:
593:
588:
583:
578:
573:
567:
562:
560:Mixing console
557:
551:
549:
543:
542:
540:
539:
534:
529:
523:
521:
515:
514:
507:
506:
499:
492:
484:
478:
477:
463:
462:External links
460:
457:
456:
438:
427:"preamplifier"
417:
416:
414:
411:
410:
409:
404:
399:
394:
386:
383:
382:
381:
378:
364:
357:
335:
324:
313:
302:
293:
290:
241:
238:
237:
236:
230:
224:
189:
186:
124:
123:
65:"Preamplifier"
38:
36:
29:
15:
9:
6:
4:
3:
2:
1245:
1234:
1231:
1229:
1226:
1225:
1223:
1210:
1209:
1196:
1190:
1189:Vehicle audio
1187:
1184:
1181:
1179:
1176:
1174:
1171:
1169:
1166:
1164:
1161:
1159:
1158:High fidelity
1156:
1154:
1151:
1150:
1148:
1144:
1138:
1135:
1133:
1130:
1128:
1125:
1123:
1120:
1118:
1115:
1113:
1110:
1108:
1105:
1103:
1100:
1098:
1095:
1093:
1090:
1088:
1085:
1084:
1082:
1078:
1072:
1069:
1067:
1064:
1062:
1059:
1057:
1054:
1052:
1049:
1047:
1044:
1042:
1039:
1037:
1034:
1032:
1029:
1027:
1024:
1022:
1019:
1017:
1014:
1012:
1009:
1008:
1006:
1002:
996:
993:
991:
988:
986:
983:
981:
978:
976:
973:
971:
968:
966:
963:
961:
958:
957:
955:
953:
949:
943:
940:
938:
935:
933:
930:
928:
925:
923:
920:
918:
915:
913:
910:
908:
905:
903:
900:
898:
895:
893:
890:
888:
885:
883:
880:
879:
877:
875:
871:
865:
862:
860:
857:
855:
852:
850:
847:
845:
842:
840:
837:
835:
832:
830:
827:
825:
822:
821:
819:
817:
813:
807:
804:
802:
799:
798:
796:
794:
793:Digital audio
790:
784:
781:
779:
776:
774:
771:
769:
766:
764:
761:
759:
756:
754:
751:
750:
748:
744:
738:
737:Tape recorder
735:
733:
730:
728:
725:
723:
720:
718:
715:
713:
710:
708:
707:Cassette deck
705:
703:
700:
698:
695:
694:
692:
690:
686:
680:
677:
675:
672:
670:
667:
665:
662:
660:
657:
655:
652:
650:
647:
645:
644:Magnetic tape
642:
640:
637:
636:
634:
632:
628:
622:
621:Outboard gear
619:
617:
614:
612:
609:
607:
604:
602:
599:
597:
594:
592:
589:
587:
584:
582:
579:
577:
574:
571:
568:
566:
563:
561:
558:
556:
555:Audio channel
553:
552:
550:
548:
544:
538:
535:
533:
530:
528:
525:
524:
522:
520:
516:
512:
505:
500:
498:
493:
491:
486:
485:
482:
475:
470:
466:
465:
452:
448:
442:
434:
433:
428:
422:
418:
408:
405:
403:
400:
398:
395:
392:
389:
388:
379:
377:
373:
369:
365:
362:
358:
355:
352:
348:
344:
340:
336:
333:
329:
328:channel strip
325:
323:applications.
322:
318:
314:
311:
307:
303:
300:
296:
295:
289:
287:
283:
279:
275:
271:
267:
263:
259:
255:
251:
247:
240:Audio systems
234:
231:
228:
225:
222:
221:
220:
217:
215:
211:
207:
203:
199:
195:
185:
183:
179:
175:
171:
167:
163:
159:
155:
151:
147:
143:
136:preamplifier.
135:
130:
120:
117:
109:
106:February 2024
98:
95:
91:
88:
84:
81:
77:
74:
70:
67: –
66:
62:
61:Find sources:
55:
51:
45:
44:
39:This article
37:
33:
28:
27:
22:
1199:
932:Sound module
892:Drum machine
834:Effects unit
727:Player piano
654:Compact disc
576:Effects unit
450:
441:
430:
421:
262:loudspeakers
243:
229:preamplifier
218:
214:noise figure
191:
182:interference
145:
142:preamplifier
141:
139:
112:
103:
93:
86:
79:
72:
60:
48:Please help
43:verification
40:
1173:Music store
1168:Home cinema
1127:Robert Moog
1112:Max Mathews
1036:Piano tuner
1004:Professions
980:Scorewriter
937:Synthesizer
753:Loudspeaker
361:photodiodes
332:mixing desk
286:sound cards
274:phonographs
266:microphones
188:Description
166:microphones
162:loudspeaker
1222:Categories
1163:Home audio
1153:Audiophile
970:GarageBand
816:Live music
758:Headphones
722:Phonograph
591:Microphone
586:Headphones
532:Electrical
527:Mechanical
413:References
343:television
317:live music
246:line level
76:newspapers
927:Sequencer
854:PA system
783:Subwoofer
768:PA system
702:Amplifier
664:Hard disk
581:Equalizer
351:satellite
345:receiver
310:overdrive
282:DJ mixers
148:, is an
975:ProTools
952:Software
942:Theremin
882:Chiptune
839:Foldback
669:MiniDisc
385:See also
354:receiver
339:masthead
292:Examples
1071:Tape op
922:Sampler
347:antenna
258:current
254:voltage
170:pickups
90:scholar
1185:(NIME)
859:Reverb
284:, and
272:, and
174:sensor
160:and a
146:preamp
134:stereo
92:
85:
78:
71:
63:
1137:STEIM
1132:SMPTE
1107:IRCAM
572:(DAW)
451:PCMAG
393:(LNA)
356:dish.
349:or a
178:noise
97:JSTOR
83:books
907:MIDI
679:Opus
372:CMOS
319:and
194:gain
180:and
168:and
69:news
674:MP3
659:DAT
52:by
1224::
1016:DJ
449:.
429:.
366:A
337:A
280:,
268:,
184:.
140:A
503:e
496:t
489:v
453:.
363:.
334:.
301:.
235:.
119:)
113:(
108:)
104:(
94:·
87:·
80:·
73:·
46:.
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
