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  1. Are Proton AA1660 amplifier still available?
  2. Recap with Reason: Sony TA-N80ES Amplifier Refurbishing Project
  3. Output power - high voltage or high current?
  4. Faulty JVC MX-GC5
  5. NAD 1300 - Problem with static
  6. voltage doubler for TPS7A4700
  7. Ultra Low noise voltage regulator IC till 80Volts?
  8. NAD amplifier disabling Power Envelope circuit
  9. STR-DN1000 power-up problem
  10. What solved the problem...
  11. Kenwood Ka-2600
  12. Rotel RA840BX service
  13. Finishing a custom made power amp...
  14. aqvox + primare
  15. NAD 3300 Amplifier repair question
  16. Proton AA1660 switch issue
  17. 2sk1058 for class A what should be the max heat dissipation preferred?
  18. need help with crest 2500 poweramp
  19. (ask) ZCA 2sk1058 mosfet amplifier
  20. Threshold SA-1 keep main fuse blown
  21. Two audio schematics-comment?!
  22. SuperA Class AMP "Nataly EA2012"
  23. V.2012 PRO. Composite Audio amplifier
  24. 900W Class H Power Amplifier
  25. PCB for audio ammplifier with mj15003/mj15004
  26. Creek 4240 Volume / channel issue
  27. Peavey PV-500 schenmatics.
  28. output inductor placement idea, does it work
  29. Help with ocillating amplifier !!
  30. What headphone amp to build?
  31. The David N.J.White 100W MOSFET amplifier
  32. "Dumb" Krell Class A Question
  33. Quad 306, an underrated masterpiece?
  34. Yamaha PC-2002M
  35. Marantz 1090 shorted output stage
  36. Audiophiler Capacitor Red compared to any Mundorf Supreme as coupling cap?
  37. curious observation re: Hafler TA-1100
  38. LME49810 minimum safe working voltage not according to the datasheet
  39. Experience with Savoy G3
  40. Rotel RA-840BX3 repair?
  41. Help hooking up transformer
  42. Hafler dh200 2sk134 mosfet transistor
  43. pioneer sx1010 zener diode voltage
  44. Adcom GFA 5400 questions
  45. Measuring Power Amp Output Impedance
  46. Skytec PA-200, smoke and volume not working
  47. NAD 7155 Preamp help needed
  48. cyrus 8v2 with buzz after 2 hours
  49. Wilson-Cfp by Stee
  50. Problem with DC offset and stability
  51. Sansui AU-517 Capacitor Recommendation
  52. Acurus RL11
  53. Kenwood KR-V55r DC present on both channels. A lot.
  54. Pioneer sx 1010 power problem
  55. Onkyo M-504 Upgrade to LED lights? Help!
  56. Subwoofer amp - too much bass!
  57. Help to fix C-Audio GB402 Amplifier
  58. NAD C320 fixed (another protection circuit problem)
  59. If replacing differential input pair; also replace current source transistor?
  60. One single output pair per channel is a good thing ?
  61. Quad 99 system transformer hum
  62. calculating the resistor & capacitor values in class a amplifier
  63. Lots of noise when input is unconnected
  64. Mosfet source follower output impedence
  65. Harman/Kardon 430 - Need help with strange powerup noise
  66. Gallien Krueger 800RB Hi Channel Problem
  67. Transistor heatsink question
  68. lme49810 DC servo circuit.
  69. 300w power amp
  70. What can cause noise in this design?
  71. SYBELIUS 3 plus - ultimate high design
  72. Help repairing Sub AMP
  73. Sansui Diamond Differential PA Simulation and possible build
  74. Krell KV300i input selector board removal
  75. Replacment transistor for hitachi 2sc2b1 ? Its in a Sansui AU 555 A
  76. Yamaha M45 low pwr issue pretty interesting.
  77. Brocken amp..noise like thunder
  78. Rails Decoupled SE Amplifier
  79. DVD/CD output and power amp input specification.
  80. Bose 550 Receiver Has DC on outputs
  81. AEQ model 250 schematic
  82. Transformer coupling instead of cap?
  83. Krell 200S
  84. HH Electronic VX-150 MosFet
  85. Power supply for power amp.
  86. Making a VCO. Design help needed.
  87. DoZ in a Hafler 220? Or. . .?
  88. Roland RE-201 tapeecho improvements
  89. Burmester 933 mk2 Clone from Jims Audio
  90. Harman-Kardon hk6200 repair
  91. Needed - Service Manual For Luxman L-110
  92. Powering front end of amplifier
  93. New Project: The Silver Fox
  94. Dual Diff Amp Question
  95. What can I build with these? 4 pairs of 2SC5200/2SA1943
  96. LM 3915 mode change
  97. Pioneer SX-1080, after re-cap problem w. center voltage & idle current
  98. CFA Enhancements
  99. Peavey PV900 schematics
  100. Power amp ideas.
  101. Got taken on yasmaha m45
  102. Marlboro PA chip conversion question
  103. Diagrams required
  104. Another 100W hifi amp
  105. Repair help needed - Creek Destiny
  106. Power Supply for PGA2310 project
  107. yamaha b1 amp
  108. Parasound HCA-800II and C/PT-600
  109. Peavey Delta Blues Reverb Mod
  110. Help, In need of Service Manual for Cambridge Azur 640A V2
  111. NAD 7250PE Repair From Driving a Shorted Voice Coil?
  112. Need help with college project - Trying to build a 3 stage amp but I'm lost
  113. Digital Attenuator for Balanced Lines?
  114. Onkyo R1 AV amp
  115. GFA 5503 Bias adjustment
  116. Onkyo Dynamic Four 800 - Schematic for modification
  117. yamaha A-1020 amp
  118. Changing my old VFA designs into ONE-BEND CFA plus Current Drives
  119. H/K Citation Sixteen Parts
  120. Rotel Rb890 hum on one Channel
  121. Sansui AU555-A D001/D002 replacment diode?
  122. Diamond Wilson CFP - Roger Amp
  123. DIY Buffer Pre Amplifier with phono stage
  124. Single ended class a build. noob question
  125. Experimentations on Regulators
  126. Perfect Stranger - Innovative Amplifier
  127. Pioneer amp board with IC drivers.
  128. Technics SA-80 distorted right channel
  129. Please help educate - T300 & VSSA level matching
  130. transformer amplifier zero feedback
  131. What do these resistors do? :(
  132. Watercooled HEXFET Power Amplifier
  133. A simple question about performance
  134. bridge adapter
  135. CROWN DC-300A SERIES II RESTORATION
  136. OLDER PIONEER PREMIER Specific Amp line
  137. Resurrecting a BGW 750B
  138. Op-amp swapping MC330789 to OPA627
  139. Sudgen p28 Bias current
  140. Rotel service manual biasing...
  141. My Blameless
  142. Amber Series 70 Fuses
  143. Bi-Pak AL60
  144. yamaha M35 amp led meter
  145. Yamaha M45 amp led circuit schematic
  146. Does this amplified topology have a name
  147. The affect of mismatched impedance
  148. Acurus A150
  149. trace acoustic ta100r repair help
  150. New to forum - Buzzing noise
  151. resistor colour code
  152. help!!!!
  153. Arcam Alpha 10 overheating issues
  154. TEAC AG 4200 relays?
  155. Unique CFA 120/230W amp
  156. Direct NFB Pure Amplifier 2
  157. Crimson CS 620D
  158. Sansui 350
  159. Driving a 4-8R speaker with a single transistor Class A amp?
  160. Turbo 225 amplifier (SGS)
  161. excelinear 2014
  162. CFP OUTPUT 100W*2 MX100 MY design
  163. Amp starts humming when volume pot is attached
  164. Cannot get 2SK170 2SJ74 Spice model to pass more than 0.4mA
  165. Second opinions on balanced inputs
  166. Availability of "current-drive" amplifiers as commercial products
  167. Amp with unfamiliar input stage - DC offset problem
  168. 2SJ118/2SK413 schematics
  169. Making a bipolar electrolytic capacitor
  170. Sap Transistors?
  171. Twisting transformer secondary's
  172. Adcom gfa-555ii killed my speakers
  173. Crown DC-300A No Mono/Dual Switch
  174. Repairing surround channels on a Marantz RS3559
  175. Behringer GM110
  176. can I have 5 m cable, quad 35 to 405 amp
  177. NAD 3125 Circuit Diagram
  178. pioneer stereo reciever sx-1080
  179. common value of output stage noise in uV?
  180. Dynacord L2400 output board schematic
  181. Bryston 3B Restoration problems
  182. Protect Headphone Amplifier Output from Accidental Arcing of Electrostatic Driver
  183. Prototype Printed Circuit Board vendors
  184. Where to find Toshiba Semiconductors today (2SK389, 2SJ109, 2SK170, etc?
  185. Musical Fidelity A1000
  186. Parasound 2250 Amp Schematics?
  187. Crown Macro Reference Bias calibration
  188. DC blocking caps in modern amplifiers?
  189. Replacing capacitors in the tuner area
  190. Source of 680nF 2% caps.
  191. first amplifier build. will my schematic work?
  192. kenwood basic M2 problem
  193. Looking for Soundcraft Spirit FX8 Schematic/Info
  194. Which combinations of transistors should thermally track
  195. Technics SA-300: dead FM tuner
  196. Krell KMA-160 schematic and biasing info needed
  197. MCU from NAD T-752
  198. gemini vintage amp need info please
  199. Help with TeddyReg
  200. NAD S300 normal operating temperature?
  201. Harmon Kardon HK650
  202. MARK LEVINSON 33X series caps..Whats best???
  203. Adding a second input channel to my diy amp. how to?
  204. Circuit for a 2.1 system?
  205. Bush Amplifier Distorted.
  206. Yamaha CA 510 Meter lights
  207. Amps' power - which is real the bottleneck ?
  208. Sansui AU 555a One dead channel ? No power ?
  209. Pioneer SA-610 mods to improve sound quality
  210. Honeybadger or Gainclone?
  211. It seems I only use 1W of amp power.. Can it be right?
  212. Increasing slew rate and stability
  213. The most bizzare problem I have come across
  214. Aragon 8008 x 3 blew my woofers?
  215. Phase Linear
  216. Yamaha M-85 Bias Voltage Does Not Increase In "Auto A" Switch Position
  217. Rather simple high quality reference amp (~200W @ 4 ohm, VFA)
  218. What is Monaural, Dual mono, stereo in fact?
  219. Why does CFP output require much less bias than EF?
  220. No Input Select at Kenwood's Integrated Amp A-1001
  221. Quad 405 - DCD–Mod4 (Keith Snook)
  222. output transformer for multiple amps
  223. Connecting amplifier chasis to earth ground, but not amplifier ground
  224. QSC1700
  225. Pioneer SA-610 - bypass the Pre-amp stage?
  226. Upgrading Transistors?
  227. Toroid Field being picked up by input transformer. Way to block this?
  228. free bryston 4b resurrection
  229. 2SA798
  230. universal Jfet source follower
  231. Amp advice prior to purchase -
  232. Which amp shall I build?
  233. Audio transformer (LT700) behaviour [newb]
  234. homemade amplifier
  235. Sansui R-70 bias
  236. Kenwood KA5700
  237. A question about a Linar 10 amp
  238. OP Amp oscillator sine wave too sharp
  239. tectronic SA-535
  240. A dive into the past
  241. Hafler 9303 transformer
  242. Debug my hum
  243. Transistors
  244. Yamaha rx-v373 making me pull my hair out!
  245. Servicing an amp: fuses, regulators, emitter resistors
  246. Pro Amplifier hum
  247. Pioneer Power Amplifier GM-6300T, No Output
  248. Storage of a vintage receiver
  249. project idea. custom amp board in old receiver
  250. Strange problems with transistors

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