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  1. Coupling cap advice : Cambridge Audio Azur 540r
  2. Lets help each other against counterfeit
  3. Nak SR4a power supply cap replacement
  4. output devices
  5. MX50 - Input gain
  6. Luxman L550 power transitors-help needed
  7. LESA HF 845 AMPLIFIER
  8. Opamp Class B amplifier output impedance
  9. matching n and p fets capacitances
  10. Sanken STD03 in Europe
  11. loudness button adjustment on the circuit board?
  12. Nad c 355 bee integrated amplifier light?
  13. Question about circuit design
  14. ARCAM Alpha 10 amp
  15. What better sound quality build after LM3875 and Class D 2020?
  16. Voxson HR313 schematic
  17. Wega amp RCA problem
  18. amps, speakers and ohms
  19. Anyone willing to help?
  20. Sony TA-FB940R dc issues?
  21. Burson Soloist Issue and Troubleshooting
  22. Power Supply for MX50 SE Power amplifier
  23. NAD C325BEE - burnt components on AMP-SMD-L BOARD
  24. Output transistor complentary pairs
  25. Paralleling the IRF mosfets
  26. Crest CKi 800v
  27. is this good setup?? :wave2s:
  28. Surround decoder dilemma
  29. GFA-555 Help Please. (pics attached)
  30. lme49830 whats the role of Cb2 here and how much it has to be when biased high
  31. Idling current for Krell KAV 300i
  32. Hum and Buzz Issue
  33. Crown XTI 2000 fries RT6 at turn on
  34. Bulbs replaced With Leds, about resistors?
  35. Help needed with NAD 7600 idle current
  36. BC546 spice model
  37. Scott A 426
  38. Nad 302 volume pot replacement
  39. sansui B77 power amp
  40. Another Son of Ampzilla rebuild.
  41. Best amp with 2sk1058
  42. roender's shunt regulator
  43. How do you match tempco between spreader and power transistor?
  44. Elektor "The Complete Preamplifier" articles.
  45. Speaker selector, OK for amp?
  46. cannot explain the circuit
  47. Very basic clipping indicator
  48. Replacement transistors for HK 6500
  49. What's this diff input topology called?
  50. About power amplifier input? Thanks.
  51. About power, bi-amping?
  52. Global Feedback - A huge benefit for audio
  53. question about mosfet direction
  54. Yamaha RX 495
  55. Veroboard Maplin Amp
  56. Adcom GFA-535 blowing main power fuse
  57. what is the difference between 2SC5200 and 2SC5200N
  58. Please check my heatsink estimate
  59. Multiple Feedback Filter Design doubt
  60. Musical Fidelity a3cr power amp modifications
  61. technics SU-7100 help
  62. Mounting amp upside down
  63. The Brief History of my life with SECA designs
  64. Technics SE-9060 vs multiple compŁarison?!
  65. OP amp driving MegaOhm load
  66. grounding issues with integrated amp
  67. AV Processor
  68. Hafler
  69. Yamaha RX-Z9 in protect mode
  70. LME49830 with ALF16N8P x 10 per rail
  71. Class AB Amp Questions.
  72. Anyone tried broskies "super triode" circuit to drive efficient sub?
  73. Arcam Alpha 2 Help/Advice
  74. Solid State Power Amplifier Kits (Modules) - Listening Tests wanted
  75. Surges and spikes
  76. About AV receiver as power amplifier?
  77. Pegeant AV-126-TR Projector
  78. Pcb request
  79. NAD 3020 recap
  80. Need information of preamps.
  81. Cambrige Azur 740A int amp Bias and offset adjustment ?
  82. Adcom ga-5802
  83. Speaker impedance with output transformer
  84. Pro Audio High Fidelity IPS
  85. Hi End 3 Band Tone Control DIY Kit - Bass Mid Treble
  86. Would this be a suitable replacement for 2sd675
  87. NG'ANYA: the art of entertainment
  88. Adcom GFP-555 upgrades from AudioXpress
  89. IRFP240 + IRFP9240 + EBAY...
  90. Pre amp for $1000.00 ???
  91. VA load - simple resistor or bootstrap
  92. EU transformer for an Hafler 9505 Transnova?
  93. Cambridge Audio A300 manual/schematics needed
  94. Double Barrel Leach underway
  95. hd amplifier bias
  96. Credo PMP154 question
  97. Rotel amp no IC version
  98. Balance control-where in the preamp chain should it go?
  99. A JIG for testing amplifier polarity
  100. Question on this schematic
  101. Haffler mosfet stuck on heat sink
  102. Left channel sometimes starts later on Marantz PM-54 II
  103. Technics SE-C01 power amp
  104. Query on BF471 as VAS
  105. Restoring old 2N3055 based amp, need advice
  106. based on Graham Dicker DIGI amp
  107. 4 watt no-gnf hybrid
  108. Is low differential input impedance of opamp not important?
  109. nad amp 701
  110. Little help with this amp please.
  111. Revisiting some "old" ideas from 1970's - IPS, OPS
  112. denon pma 260
  113. from DIY Indonesian Amplifier
  114. Soundstream D200 clone,few hours,nice sound
  115. Lampizator - Fetishizator
  116. Sinclair schematics
  117. nad 701
  118. Onkyo A-9155 - no sound but power
  119. Oliver Offset Optimiser
  120. Is discrete better than chip op amp
  121. Parasound HCA-1000A No Sound
  122. Where to measure the bias on P180?
  123. Popping sound from Left Channel of Marantz PM7002
  124. IC preamp vs discrete preamp - Different?
  125. Crest VS900 burning hot resistor R92
  126. Adcom 5400: using lower capacitance caps
  127. Help please Ne5532a op amp chip
  128. Symasym, opinions please.
  129. sub amp
  130. Low on bass SONY TAF530ES/TAF222ESR
  131. Shreek Protection at turn on
  132. Help w/Yamaha RX-550
  133. Suggestions Fuse Protection?
  134. Need advice on Power supply
  135. please check my work
  136. Nad C270
  137. Cambridge Audio A1mk3SE repair
  138. Picked up a beautiful, almost mint DC 300A. Now what?
  139. Power amplifier with 2n3055/mj2955-schematic
  140. Help with power supply repair
  141. Search Onix A-120 Schťmatic
  142. Apex BA1200 offset problem.
  143. Film caps are directional as well?!
  144. Sony TA 3120A
  145. Strange Amp Design?
  146. Question regard japanese voltage amp in us
  147. Large offset and large differential input to input pairs... but amp works..?
  148. amplifier TDA7294 + power supply smps
  149. Required grounding scheme for zero 60/120hz hum.
  150. APEX HB 1200 TEF
  151. My etching tank made out of k'nex..... (serious)
  152. Which Fuses For My Nikko
  153. Audio PCB's with Sprint Layout ?
  154. So... should I build this?
  155. New type of Toshiba 2sc5200/2sa1943 or FAKE?
  156. Technics SU-V3 negative voltage at output!!!
  157. Noise in my stereo tda2003 amp
  158. Input capacitor question
  159. sansui B77 power amp
  160. Seek advice on simple & very good sounding class A/B output stage.
  161. Jfet complimentary input stage or Jfet LTP?
  162. Chassis Design using Mosfets
  163. Solid State Rail Fuse Replacement
  164. qinpu a3 doesn't relay click
  165. Assembled mosfet amplifiers from ebay
  166. Nakamichi TA-3A Sound Not Working
  167. Adding a Jfet input stage for the power amplifier improves sound quality?
  168. output voltage at speaker terminals
  169. Looking for schematic for Pioneer SX-40
  170. Sansui AU-4900 problem
  171. Techno SAP130 STD03P STD03N 130 Watt HiFI
  172. Need help setting idling current on old Philips amp
  173. blown amplifier channel (TDA2003)
  174. Single Ended Class A, No global feedback, 8W, MOSFET, low output Z
  175. Upgrades for Rotel RB-991 Power Amp
  176. Doxa 70 Signature Series Mk2 and BD245C/BD246C
  177. Darlington VSSA
  178. AB International 600LX Test Results
  179. Correct Naming for Pioneer/Akai Speaker Terminal used in Solid State Receivers wanted
  180. crest audio 8001 - input board details
  181. Alesis RA-500 troubles
  182. Crest Pro 9200 help
  183. Advent 300 stupid mistake
  184. Help with Kenwood M2A
  185. Emotiva DC-1 grounding mod
  186. Epsilon LT-model
  187. 2n3055 amplifier
  188. Marantz pm57
  189. How to make the PCB layout and routing better
  190. Miraculous Germanium Transistors from China
  191. Bose model 550
  192. Audio Research - A15 , Roterdam
  193. Luxman LV-105U volume pot
  194. Denon PMA-900V lowering gain/opamp swap
  195. problem with a Crest 8001 power amp
  196. LME 49710 opamp; difference in available types?
  197. C Audio TR 850 Schematics?
  198. Pioneer P4600 went dead after setting high volume
  199. Beginner trying to upgrade old speaker set with amp
  200. Parasound Amp - curious current overload
  201. Blown output transistors in Earth Original 2000
  202. Quad 306 -- Trouble shooting
  203. Adding shunt capacitor and resistor in zobel causes instability - Any ideas why?
  204. A power amplifier with 2SC2922SA1216
  205. super simple Jfet crossover
  206. Ampzilla Power Meter Schematic
  207. Pros and cons of using JFET input stage
  208. Negative 5 volt on Adcom 555 MK II
  209. Anyone help me with this amp?
  210. How to improve a Sunfire 300x2 amplifier?
  211. how to measure watt of an amplifier
  212. Unbalanced channels at low volume level.
  213. Diy stereo bluetooth portable speaker help
  214. the IPANEMA AMP
  215. Consonance Calaf, repairs and mods
  216. Strange problem with NAD 1020a pre-amp
  217. 2SJ74 NI Multisim model please
  218. Power Amp Front End with integr. OpAmp and Signal Pad by Power Supply Rail - Naming?
  219. Nakamichi RE-2 Receiver. Possible upgrades ?
  220. Thermal Track transistors bias stability at 25V 1Amp?
  221. Quad 303: setting 33.5V problem
  222. Yamaha RX-V690
  223. Luxman L1 problem
  224. Topaz Line 2 Power Conditioner
  225. question on speaker protection circuit
  226. Replacing low value electrolytics with film caps ?
  227. SCR for my Soundcraftsmen MA-5002
  228. What was this amplifier?
  229. Output impedance of Yamaha CA610ii headphone jack
  230. erno borbely super shunt regulator
  231. NAD 2200 power supply - time to recap?
  232. Parasound HCA-2200 service manual
  233. Yamaha CA-610ii
  234. Help with a dead Pioneer A-447
  235. Pioneer SA-7300 advice needed.
  236. Sanyo System 566 Right Channel Broke HELP!!!!
  237. Ask for help of this mosfet output amp
  238. Aux Audio power supply
  239. Please help me convert this amp
  240. Some questions about this kind of current source
  241. AZUR851A schematic (of amp PCB only) anyone?
  242. Tda1515bq amp portable speaker
  243. The Ultimate Amp??
  244. IC for Subwoofer?
  245. hifonics brutus brx2400.1d
  246. Upgrade Marantz PM-54 II phono stage
  247. Tesla NZC-431 Repair
  248. NJW0281G / NJW0302G instead of 2SC5200/2SA1943
  249. Fixed Bias (no bias control) and Upgrading Output Transistors
  250. How important is the preamp?

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