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  1. Opamp Class B amplifier output impedance
  2. matching n and p fets capacitances
  3. Sanken STD03 in Europe
  4. loudness button adjustment on the circuit board?
  5. Nad c 355 bee integrated amplifier light?
  6. Question about circuit design
  7. ARCAM Alpha 10 amp
  8. What better sound quality build after LM3875 and Class D 2020?
  9. Voxson HR313 schematic
  10. Wega amp RCA problem
  11. amps, speakers and ohms
  12. Anyone willing to help?
  13. Sony TA-FB940R dc issues?
  14. Burson Soloist Issue and Troubleshooting
  15. Power Supply for MX50 SE Power amplifier
  16. NAD C325BEE - burnt components on AMP-SMD-L BOARD
  17. Output transistor complentary pairs
  18. Paralleling the IRF mosfets
  19. Crest CKi 800v
  20. is this good setup?? :wave2s:
  21. Surround decoder dilemma
  22. GFA-555 Help Please. (pics attached)
  23. lme49830 whats the role of Cb2 here and how much it has to be when biased high
  24. Idling current for Krell KAV 300i
  25. Hum and Buzz Issue
  26. Crown XTI 2000 fries RT6 at turn on
  27. Bulbs replaced With Leds, about resistors?
  28. Help needed with NAD 7600 idle current
  29. BC546 spic model
  30. Scott A 426
  31. Nad 302 volume pot replacement
  32. sansui B77 power amp
  33. Another Son of Ampzilla rebuild.
  34. Best amp with 2sk1058
  35. roender's shunt regulator
  36. How do you match tempco between spreader and power transistor?
  37. Elektor "The Complete Preamplifier" articles.
  38. Speaker selector, OK for amp?
  39. cannot explain the circuit
  40. Very basic clipping indicator
  41. Replacement transistors for HK 6500
  42. What's this diff input topology called?
  43. About power amplifier input? Thanks.
  44. About power, bi-amping?
  45. Global Feedback - A huge benefit for audio
  46. question about mosfet direction
  47. Yamaha RX 495
  48. Veroboard Maplin Amp
  49. Adcom GFA-535 blowing main power fuse
  50. what is the difference between 2SC5200 and 2SC5200N
  51. Please check my heatsink estimate
  52. Multiple Feedback Filter Design doubt
  53. Musical Fidelity a3cr power amp modifications
  54. technics SU-7100 help
  55. Mounting amp upside down
  56. The Brief History of my life with SECA designs
  57. Technics SE-9060 vs multiple compŁarison?!
  58. OP amp driving MegaOhm load
  59. grounding issues with integrated amp
  60. AV Processor
  61. Hafler
  62. Yamaha RX-Z9 in protect mode
  63. LME49830 with ALF16N8P x 10 per rail
  64. Class AB Amp Questions.
  65. Anyone tried broskies "super triode" circuit to drive efficient sub?
  66. Arcam Alpha 2 Help/Advice
  67. Solid State Power Amplifier Kits (Modules) - Listening Tests wanted
  68. Surges and spikes
  69. About AV receiver as power amplifier?
  70. Pegeant AV-126-TR Projector
  71. Pcb request
  72. NAD 3020 recap
  73. Need information of preamps.
  74. Cambrige Azur 740A int amp Bias and offset adjustment ?
  75. Adcom ga-5802
  76. Speaker impedance with output transformer
  77. Pro Audio High Fidelity IPS
  78. Hi End 3 Band Tone Control DIY Kit - Bass Mid Treble
  79. Would this be a suitable replacement for 2sd675
  80. NG'ANYA: the art of entertainment
  81. Adcom GFP-555 upgrades from AudioXpress
  82. IRFP240 + IRFP9240 + EBAY...
  83. Pre amp for $1000.00 ???
  84. VA load - simple resistor or bootstrap
  85. EU transformer for an Hafler 9505 Transnova?
  86. Cambridge Audio A300 manual/schematics needed
  87. Double Barrel Leach underway
  88. hd amplifier bias
  89. Credo PMP154 question
  90. Rotel amp no IC version
  91. Balance control-where in the preamp chain should it go?
  92. A JIG for testing amplifier polarity
  93. Question on this schematic
  94. Haffler mosfet stuck on heat sink
  95. Left channel sometimes starts later on Marantz PM-54 II
  96. Technics SE-C01 power amp
  97. Query on BF471 as VAS
  98. Restoring old 2N3055 based amp, need advice
  99. based on Graham Dicker DIGI amp
  100. 4 watt no-gnf hybrid
  101. Is low differential input impedance of opamp not important?
  102. nad amp 701
  103. Little help with this amp please.
  104. Revisiting some "old" ideas from 1970's - IPS, OPS
  105. denon pma 260
  106. from DIY Indonesian Amplifier
  107. Soundstream D200 clone,few hours,nice sound
  108. Lampizator - Fetishizator
  109. Sinclair schematics
  110. nad 701
  111. Onkyo A-9155 - no sound but power
  112. Oliver Offset Optimiser
  113. Is discrete better than chip op amp
  114. Parasound HCA-1000A No Sound
  115. Where to measure the bias on P180?
  116. Popping sound from Left Channel of Marantz PM7002
  117. IC preamp vs discrete preamp - Different?
  118. Crest VS900 burning hot resistor R92
  119. Adcom 5400: using lower capacitance caps
  120. Help please Ne5532a op amp chip
  121. Symasym, opinions please.
  122. sub amp
  123. Low on bass SONY TAF530ES/TAF222ESR
  124. Shreek Protection at turn on
  125. Help w/Yamaha RX-550
  126. Suggestions Fuse Protection?
  127. Need advice on Power supply
  128. please check my work
  129. Nad C270
  130. Cambridge Audio A1mk3SE repair
  131. Picked up a beautiful, almost mint DC 300A. Now what?
  132. Power amplifier with 2n3055/mj2955-schematic
  133. Help with power supply repair
  134. Search Onix A-120 Schťmatic
  135. Apex BA1200 offset problem.
  136. Film caps are directional as well?!
  137. Sony TA 3120A
  138. Strange Amp Design?
  139. Question regard japanese voltage amp in us
  140. Large offset and large differential input to input pairs... but amp works..?
  141. amplifier TDA7294 + power supply smps
  142. Required grounding scheme for zero 60/120hz hum.
  143. APEX HB 1200 TEF
  144. My etching tank made out of k'nex..... (serious)
  145. Which Fuses For My Nikko
  146. Audio PCB's with Sprint Layout ?
  147. So... should I build this?
  148. New type of Toshiba 2sc5200/2sa1943 or FAKE?
  149. Technics SU-V3 negative voltage at output!!!
  150. Noise in my stereo tda2003 amp
  151. Input capacitor question
  152. sansui B77 power amp
  153. Seek advice on simple & very good sounding class A/B output stage.
  154. Jfet complimentary input stage or Jfet LTP?
  155. Chassis Design using Mosfets
  156. Solid State Rail Fuse Replacement
  157. qinpu a3 doesn't relay click
  158. Assembled mosfet amplifiers from ebay
  159. Nakamichi TA-3A Sound Not Working
  160. Adding a Jfet input stage for the power amplifier improves sound quality?
  161. output voltage at speaker terminals
  162. Looking for schematic for Pioneer SX-40
  163. Sansui AU-4900 problem
  164. Techno SAP130 STD03P STD03N 130 Watt HiFI
  165. Need help setting idling current on old Philips amp
  166. blown amplifier channel (TDA2003)
  167. Single Ended Class A, No global feedback, 8W, MOSFET, low output Z
  168. Upgrades for Rotel RB-991 Power Amp
  169. Doxa 70 Signature Series Mk2 and BD245C/BD246C
  170. Darlington VSSA
  171. AB International 600LX Test Results
  172. Correct Naming for Pioneer/Akai Speaker Terminal used in Solid State Receivers wanted
  173. crest audio 8001 - input board details
  174. Alesis RA-500 troubles
  175. Crest Pro 9200 help
  176. Advent 300 stupid mistake
  177. Help with Kenwood M2A
  178. Emotiva DC-1 grounding mod
  179. Epsilon LT-model
  180. 2n3055 amplifier
  181. Marantz pm57
  182. How to make the PCB layout and routing better
  183. Miraculous Germanium Transistors from China
  184. Bose model 550
  185. Audio Research - A15 , Roterdam
  186. Luxman LV-105U volume pot
  187. Denon PMA-900V lowering gain/opamp swap
  188. problem with a Crest 8001 power amp
  189. LME 49710 opamp; difference in available types?
  190. C Audio TR 850 Schematics?
  191. Pioneer P4600 went dead after setting high volume
  192. Beginner trying to upgrade old speaker set with amp
  193. Parasound Amp - curious current overload
  194. Blown output transistors in Earth Original 2000
  195. Quad 306 -- Trouble shooting
  196. Adding shunt capacitor and resistor in zobel causes instability - Any ideas why?
  197. A power amplifier with 2SC2922SA1216
  198. super simple Jfet crossover
  199. Ampzilla Power Meter Schematic
  200. Pros and cons of using JFET input stage
  201. Negative 5 volt on Adcom 555 MK II
  202. Anyone help me with this amp?
  203. How to improve a Sunfire 300x2 amplifier?
  204. how to measure watt of an amplifier
  205. Unbalanced channels at low volume level.
  206. Diy stereo bluetooth portable speaker help
  207. the IPANEMA AMP
  208. Consonance Calaf, repairs and mods
  209. Strange problem with NAD 1020a pre-amp
  210. 2SJ74 NI Multisim model please
  211. Power Amp Front End with integr. OpAmp and Signal Pad by Power Supply Rail - Naming?
  212. Nakamichi RE-2 Receiver. Possible upgrades ?
  213. Thermal Track transistors bias stability at 25V 1Amp?
  214. Quad 303: setting 33.5V problem
  215. Yamaha RX-V690
  216. Luxman L1 problem
  217. Topaz Line 2 Power Conditioner
  218. question on speaker protection circuit
  219. Replacing low value electrolytics with film caps ?
  220. SCR for my Soundcraftsmen MA-5002
  221. What was this amplifier?
  222. Output impedance of Yamaha CA610ii headphone jack
  223. erno borbely super shunt regulator
  224. NAD 2200 power supply - time to recap?
  225. Parasound HCA-2200 service manual
  226. Yamaha CA-610ii
  227. Help with a dead Pioneer A-447
  228. Pioneer SA-7300 advice needed.
  229. Sanyo System 566 Right Channel Broke HELP!!!!
  230. Ask for help of this mosfet output amp
  231. Aux Audio power supply
  232. Please help me convert this amp
  233. Some questions about this kind of current source
  234. AZUR851A schematic (of amp PCB only) anyone?
  235. Tda1515bq amp portable speaker
  236. The Ultimate Amp??
  237. IC for Subwoofer?
  238. hifonics brutus brx2400.1d
  239. Upgrade Marantz PM-54 II phono stage
  240. Tesla NZC-431 Repair
  241. NJW0281G / NJW0302G instead of 2SC5200/2SA1943
  242. Fixed Bias (no bias control) and Upgrading Output Transistors
  243. How important is the preamp?
  244. Ask for help... buffer add to curcuit with DC servo becomes unstable
  245. Custom Heatsink
  246. Marantz 2230 weirdness.
  247. TO-220 output transistors for power amp
  248. Best laser printer transparency for photo resist transfer?
  249. My own 80W/8R amplifier need help
  250. I need help on an SS design

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