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  1. Any Parasound (HCA-1000A) Historians Out There?
  2. Seeburg TSA3
  3. VC5022 SuperA Bias controll ic problem..
  4. NTE or Ebay? What would you choose?
  5. How to choose emitter resistor of output power stage ?
  6. Query on JFET / BJT cascode circuit
  7. PCB layout and fabrication and Audio devices
  8. Refurbished Cyrus II with 'hum'
  9. Cayin 265 Ai
  10. Musical Fidelity Supercharger
  11. Help with CM labs model?
  12. Qestion about Némésis Amplifier
  13. Dr. Matti Otala, RIP
  14. Akai AA-5000 audio amplier service manual
  15. Ground lift, Short to Chassis, RCA shield, Safe?
  16. Binding Posts Sonance VCA-1
  17. AV receiver dilemma
  18. P and N Mosfets give some output V offset
  19. SAE 2200 Rebuild/Repair...
  20. Yamaha RX-V2400 shuts down after power up
  21. Leak Delta 30 blowing rect. fuse
  22. Ideas about car audio amplifier from scratch
  23. triple bias
  24. Bipolar caps
  25. Urgent - LED bar meter
  26. SABA MI212 problem : transistor heat
  27. Too many amps flip breaker?
  28. need suggestion - emitter resistor value for 5 pairs BJT parallel output
  29. Yamaha RX-V2400 question
  30. Well, this is embarrassing. A/V receiver
  31. Classe DR-25/25 repair
  32. Coil yamaha xp7000
  33. Rotel RA-940BX distorted sound
  34. How to wire a VU meter
  35. Diode reduces THD !
  36. Class A Amp complete kit - recommendations?
  37. Pioneer SX-2300 need schematic of protect circuit
  38. Will a step-up transformer impact sound quality?
  39. Graham Nalty - Virtuous Amplifier
  40. Low cost universal amplifier chassis
  41. Krell KRC-3 to be recapped What brand?
  42. Switch mode power supplies for audio amps
  43. "super complementary" topology
  44. Looking for a high-end DiY headphone SS amp
  45. STK3152 III
  46. AKAI AA 1050 cleaning and restoring
  47. Sansui G-9000
  48. B&K Sonata Pro10MC schematic
  49. Technics SU V85A
  50. Junior Holton need advice
  51. Audio Analogue Enigma service manual
  52. KA-305: No Right Channel and need some help
  53. I sat pondering whether the Chinese can beat Goldmund at its own game
  54. KC-150 w/ DC on Speaker Terminals
  55. The SMPTE intermod distortion challenge
  56. Peavey ICA2400 Amplifier
  57. Help with Mosfet Subs....
  58. Sansui TU-X1 Modding
  59. Crackling Sony TA-2000F Pre and TA-3200F Power
  60. Firmware file for CA Azur 640r
  61. DH-100 series 1
  62. Output Resistors in P3A amp
  63. How to replace a Noble Dual Emitter Resistor
  64. interesting method to bias powerstage please read it
  65. Sansui Solid State 300.
  66. Ebay Current Feedback Amp
  67. variac question
  68. Do my Exicon MOSFETs look genuine?
  69. Need advice
  70. Issue with 3EF Diamond
  71. Crown CL 1 input sensitivity
  72. Marantz PM66KI Problem - no 'click' and smoking resistor
  73. Technics su-8044 service manual
  74. Coupling cap advice : Cambridge Audio Azur 540r
  75. Lets help each other against counterfeit
  76. Nak SR4a power supply cap replacement
  77. output devices
  78. MX50 - Input gain
  79. Luxman L550 power transitors-help needed
  80. LESA HF 845 AMPLIFIER
  81. Opamp Class B amplifier output impedance
  82. matching n and p fets capacitances
  83. Sanken STD03 in Europe
  84. loudness button adjustment on the circuit board?
  85. Nad c 355 bee integrated amplifier light?
  86. Question about circuit design
  87. ARCAM Alpha 10 amp
  88. What better sound quality build after LM3875 and Class D 2020?
  89. Voxson HR313 schematic
  90. Wega amp RCA problem
  91. amps, speakers and ohms
  92. Anyone willing to help?
  93. Sony TA-FB940R dc issues?
  94. Burson Soloist Issue and Troubleshooting
  95. Power Supply for MX50 SE Power amplifier
  96. NAD C325BEE - burnt components on AMP-SMD-L BOARD
  97. Output transistor complentary pairs
  98. Paralleling the IRF mosfets
  99. Crest CKi 800v
  100. is this good setup?? :wave2s:
  101. Surround decoder dilemma
  102. GFA-555 Help Please. (pics attached)
  103. lme49830 whats the role of Cb2 here and how much it has to be when biased high
  104. Idling current for Krell KAV 300i
  105. Hum and Buzz Issue
  106. Crown XTI 2000 fries RT6 at turn on
  107. Bulbs replaced With Leds, about resistors?
  108. Help needed with NAD 7600 idle current
  109. BC546 spic model
  110. Scott A 426
  111. Nad 302 volume pot replacement
  112. sansui B77 power amp
  113. Another Son of Ampzilla rebuild.
  114. Best amp with 2sk1058
  115. roender's shunt regulator
  116. How do you match tempco between spreader and power transistor?
  117. Elektor "The Complete Preamplifier" articles.
  118. Speaker selector, OK for amp?
  119. cannot explain the circuit
  120. Very basic clipping indicator
  121. Replacement transistors for HK 6500
  122. What's this diff input topology called?
  123. About power amplifier input? Thanks.
  124. About power, bi-amping?
  125. Global Feedback - A huge benefit for audio
  126. question about mosfet direction
  127. Yamaha RX 495
  128. Veroboard Maplin Amp
  129. Adcom GFA-535 blowing main power fuse
  130. what is the difference between 2SC5200 and 2SC5200N
  131. Please check my heatsink estimate
  132. Multiple Feedback Filter Design doubt
  133. Musical Fidelity a3cr power amp modifications
  134. technics SU-7100 help
  135. Mounting amp upside down
  136. The Brief History of my life with SECA designs
  137. Technics SE-9060 vs multiple compüarison?!
  138. OP amp driving MegaOhm load
  139. grounding issues with integrated amp
  140. AV Processor
  141. Hafler
  142. Yamaha RX-Z9 in protect mode
  143. LME49830 with ALF16N8P x 10 per rail
  144. Class AB Amp Questions.
  145. Anyone tried broskies "super triode" circuit to drive efficient sub?
  146. Arcam Alpha 2 Help/Advice
  147. Solid State Power Amplifier Kits (Modules) - Listening Tests wanted
  148. Surges and spikes
  149. About AV receiver as power amplifier?
  150. Pegeant AV-126-TR Projector
  151. Pcb request
  152. NAD 3020 recap
  153. Need information of preamps.
  154. Cambrige Azur 740A int amp Bias and offset adjustment ?
  155. Adcom ga-5802
  156. Speaker impedance with output transformer
  157. Pro Audio High Fidelity IPS
  158. Hi End 3 Band Tone Control DIY Kit - Bass Mid Treble
  159. Would this be a suitable replacement for 2sd675
  160. NG'ANYA: the art of entertainment
  161. Adcom GFP-555 upgrades from AudioXpress
  162. IRFP240 + IRFP9240 + EBAY...
  163. Pre amp for $1000.00 ???
  164. VA load - simple resistor or bootstrap
  165. EU transformer for an Hafler 9505 Transnova?
  166. Cambridge Audio A300 manual/schematics needed
  167. Double Barrel Leach underway
  168. hd amplifier bias
  169. Credo PMP154 question
  170. Rotel amp no IC version
  171. Balance control-where in the preamp chain should it go?
  172. A JIG for testing amplifier polarity
  173. Question on this schematic
  174. Haffler mosfet stuck on heat sink
  175. Left channel sometimes starts later on Marantz PM-54 II
  176. Technics SE-C01 power amp
  177. Query on BF471 as VAS
  178. Restoring old 2N3055 based amp, need advice
  179. based on Graham Dicker DIGI amp
  180. 4 watt no-gnf hybrid
  181. Is low differential input impedance of opamp not important?
  182. nad amp 701
  183. Little help with this amp please.
  184. Revisiting some "old" ideas from 1970's - IPS, OPS
  185. denon pma 260
  186. from DIY Indonesian Amplifier
  187. Soundstream D200 clone,few hours,nice sound
  188. Lampizator - Fetishizator
  189. Sinclair schematics
  190. nad 701
  191. Onkyo A-9155 - no sound but power
  192. Oliver Offset Optimiser
  193. Is discrete better than chip op amp
  194. Parasound HCA-1000A No Sound
  195. Where to measure the bias on P180?
  196. Popping sound from Left Channel of Marantz PM7002
  197. IC preamp vs discrete preamp - Different?
  198. Crest VS900 burning hot resistor R92
  199. Adcom 5400: using lower capacitance caps
  200. Help please Ne5532a op amp chip
  201. Symasym, opinions please.
  202. sub amp
  203. Low on bass SONY TAF530ES/TAF222ESR
  204. Shreek Protection at turn on
  205. Help w/Yamaha RX-550
  206. Suggestions Fuse Protection?
  207. Need advice on Power supply
  208. please check my work
  209. Nad C270
  210. Cambridge Audio A1mk3SE repair
  211. Picked up a beautiful, almost mint DC 300A. Now what?
  212. Power amplifier with 2n3055/mj2955-schematic
  213. Help with power supply repair
  214. Search Onix A-120 Schématic
  215. Apex BA1200 offset problem.
  216. Film caps are directional as well?!
  217. Sony TA 3120A
  218. Strange Amp Design?
  219. Question regard japanese voltage amp in us
  220. Large offset and large differential input to input pairs... but amp works..?
  221. amplifier TDA7294 + power supply smps
  222. Required grounding scheme for zero 60/120hz hum.
  223. APEX HB 1200 TEF
  224. My etching tank made out of k'nex..... (serious)
  225. Which Fuses For My Nikko
  226. Audio PCB's with Sprint Layout ?
  227. So... should I build this?
  228. New type of Toshiba 2sc5200/2sa1943 or FAKE?
  229. Technics SU-V3 negative voltage at output!!!
  230. Noise in my stereo tda2003 amp
  231. Input capacitor question
  232. sansui B77 power amp
  233. Seek advice on simple & very good sounding class A/B output stage.
  234. Jfet complimentary input stage or Jfet LTP?
  235. Chassis Design using Mosfets
  236. Solid State Rail Fuse Replacement
  237. qinpu a3 doesn't relay click
  238. Assembled mosfet amplifiers from ebay
  239. Nakamichi TA-3A Sound Not Working
  240. Adding a Jfet input stage for the power amplifier improves sound quality?
  241. output voltage at speaker terminals
  242. Looking for schematic for Pioneer SX-40
  243. Sansui AU-4900 problem
  244. Techno SAP130 STD03P STD03N 130 Watt HiFI
  245. Need help setting idling current on old Philips amp
  246. blown amplifier channel (TDA2003)
  247. Single Ended Class A, No global feedback, 8W, MOSFET, low output Z
  248. Upgrades for Rotel RB-991 Power Amp
  249. Doxa 70 Signature Series Mk2 and BD245C/BD246C
  250. Darlington VSSA

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