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  1. NAD 7155 Preamp help needed
  2. cyrus 8v2 with buzz after 2 hours
  3. Wilson-Cfp by Stee
  4. Problem with DC offset and stability
  5. Sansui AU-517 Capacitor Recommendation
  6. Acurus RL11
  7. Kenwood KR-V55r DC present on both channels. A lot.
  8. Pioneer sx 1010 power problem
  9. Onkyo M-504 Upgrade to LED lights? Help!
  10. Subwoofer amp - too much bass!
  11. Help to fix C-Audio GB402 Amplifier
  12. NAD C320 fixed (another protection circuit problem)
  13. If replacing differential input pair; also replace current source transistor?
  14. One single output pair per channel is a good thing ?
  15. Quad 99 system transformer hum
  16. calculating the resistor & capacitor values in class a amplifier
  17. Lots of noise when input is unconnected
  18. Mosfet source follower output impedence
  19. Harman/Kardon 430 - Need help with strange powerup noise
  20. Gallien Krueger 800RB Hi Channel Problem
  21. Transistor heatsink question
  22. lme49810 DC servo circuit.
  23. 300w power amp
  24. What can cause noise in this design?
  25. SYBELIUS 3 plus - ultimate high design
  26. Help repairing Sub AMP
  27. Sansui Diamond Differential PA Simulation and possible build
  28. Krell KV300i input selector board removal
  29. Replacment transistor for hitachi 2sc2b1 ? Its in a Sansui AU 555 A
  30. Yamaha M45 low pwr issue pretty interesting.
  31. Brocken amp..noise like thunder
  32. Rails Decoupled SE Amplifier
  33. DVD/CD output and power amp input specification.
  34. Bose 550 Receiver Has DC on outputs
  35. AEQ model 250 schematic
  36. Transformer coupling instead of cap?
  37. Krell 200S
  38. HH Electronic VX-150 MosFet
  39. Power supply for power amp.
  40. Making a VCO. Design help needed.
  41. DoZ in a Hafler 220? Or. . .?
  42. Roland RE-201 tapeecho improvements
  43. Burmester 933 mk2 Clone from Jims Audio
  44. Harman-Kardon hk6200 repair
  45. Needed - Service Manual For Luxman L-110
  46. Powering front end of amplifier
  47. New Project: The Silver Fox
  48. Dual Diff Amp Question
  49. What can I build with these? 4 pairs of 2SC5200/2SA1943
  50. LM 3915 mode change
  51. Pioneer SX-1080, after re-cap problem w. center voltage & idle current
  52. CFA Enhancements
  53. Peavey PV900 schematics
  54. Power amp ideas.
  55. Got taken on yasmaha m45
  56. Marlboro PA chip conversion question
  57. Diagrams required
  58. Another 100W hifi amp
  59. Repair help needed - Creek Destiny
  60. Power Supply for PGA2310 project
  61. yamaha b1 amp
  62. Parasound HCA-800II and C/PT-600
  63. Peavey Delta Blues Reverb Mod
  64. Help, In need of Service Manual for Cambridge Azur 640A V2
  65. NAD 7250PE Repair From Driving a Shorted Voice Coil?
  66. Need help with college project - Trying to build a 3 stage amp but I'm lost
  67. Digital Attenuator for Balanced Lines?
  68. Onkyo R1 AV amp
  69. GFA 5503 Bias adjustment
  70. Onkyo Dynamic Four 800 - Schematic for modification
  71. yamaha A-1020 amp
  72. Changing my old VFA designs into ONE-BEND CFA plus Current Drives
  73. H/K Citation Sixteen Parts
  74. Rotel Rb890 hum on one Channel
  75. Sansui AU555-A D001/D002 replacment diode?
  76. Diamond Wilson CFP - Roger Amp
  77. DIY Buffer Pre Amplifier with phono stage
  78. Single ended class a build. noob question
  79. Experimentations on Regulators
  80. Perfect Stranger - Innovative Amplifier
  81. Pioneer amp board with IC drivers.
  82. Technics SA-80 distorted right channel
  83. Please help educate - T300 & VSSA level matching
  84. transformer amplifier zero feedback
  85. What do these resistors do? :(
  86. Watercooled HEXFET Power Amplifier
  87. A simple question about performance
  88. bridge adapter
  89. CROWN DC-300A SERIES II RESTORATION
  90. OLDER PIONEER PREMIER Specific Amp line
  91. Resurrecting a BGW 750B
  92. Op-amp swapping MC330789 to OPA627
  93. Sudgen p28 Bias current
  94. Rotel service manual biasing...
  95. My Blameless
  96. Amber Series 70 Fuses
  97. Bi-Pak AL60
  98. yamaha M35 amp led meter
  99. Yamaha M45 amp led circuit schematic
  100. Does this amplified topology have a name
  101. The affect of mismatched impedance
  102. Acurus A150
  103. trace acoustic ta100r repair help
  104. New to forum - Buzzing noise
  105. resistor colour code
  106. help!!!!
  107. Arcam Alpha 10 overheating issues
  108. TEAC AG 4200 relays?
  109. Unique CFA 120/230W amp
  110. Direct NFB Pure Amplifier 2
  111. Crimson CS 620D
  112. Sansui 350
  113. Driving a 4-8R speaker with a single transistor Class A amp?
  114. Turbo 225 amplifier (SGS)
  115. excelinear 2014
  116. CFP OUTPUT 100W*2 MX100 MY design
  117. Amp starts humming when volume pot is attached
  118. Cannot get 2SK170 2SJ74 Spice model to pass more than 0.4mA
  119. Second opinions on balanced inputs
  120. Availability of "current-drive" amplifiers as commercial products
  121. Amp with unfamiliar input stage - DC offset problem
  122. 2SJ118/2SK413 schematics
  123. Making a bipolar electrolytic capacitor
  124. Sap Transistors?
  125. Twisting transformer secondary's
  126. Adcom gfa-555ii killed my speakers
  127. Crown DC-300A No Mono/Dual Switch
  128. Repairing surround channels on a Marantz RS3559
  129. Behringer GM110
  130. can I have 5 m cable, quad 35 to 405 amp
  131. NAD 3125 Circuit Diagram
  132. pioneer stereo reciever sx-1080
  133. common value of output stage noise in uV?
  134. Dynacord L2400 output board schematic
  135. Bryston 3B Restoration problems
  136. Protect Headphone Amplifier Output from Accidental Arcing of Electrostatic Driver
  137. Prototype Printed Circuit Board vendors
  138. Where to find Toshiba Semiconductors today (2SK389, 2SJ109, 2SK170, etc?
  139. Musical Fidelity A1000
  140. Parasound 2250 Amp Schematics?
  141. Crown Macro Reference Bias calibration
  142. DC blocking caps in modern amplifiers?
  143. Replacing capacitors in the tuner area
  144. Source of 680nF 2% caps.
  145. first amplifier build. will my schematic work?
  146. kenwood basic M2 problem
  147. Looking for Soundcraft Spirit FX8 Schematic/Info
  148. Which combinations of transistors should thermally track
  149. Technics SA-300: dead FM tuner
  150. Krell KMA-160 schematic and biasing info needed
  151. MCU from NAD T-752
  152. gemini vintage amp need info please
  153. Help with TeddyReg
  154. NAD S300 normal operating temperature?
  155. Harmon Kardon HK650
  156. MARK LEVINSON 33X series caps..Whats best???
  157. Adding a second input channel to my diy amp. how to?
  158. Circuit for a 2.1 system?
  159. Bush Amplifier Distorted.
  160. Yamaha CA 510 Meter lights
  161. Amps' power - which is real the bottleneck ?
  162. Sansui AU 555a One dead channel ? No power ?
  163. Pioneer SA-610 mods to improve sound quality
  164. Honeybadger or Gainclone?
  165. It seems I only use 1W of amp power.. Can it be right?
  166. Increasing slew rate and stability
  167. The most bizzare problem I have come across
  168. Aragon 8008 x 3 blew my woofers?
  169. Phase Linear
  170. Yamaha M-85 Bias Voltage Does Not Increase In "Auto A" Switch Position
  171. Rather simple high quality reference amp (~200W @ 4 ohm, VFA)
  172. What is Monaural, Dual mono, stereo in fact?
  173. Why does CFP output require much less bias than EF?
  174. No Input Select at Kenwood's Integrated Amp A-1001
  175. Quad 405 - DCD–Mod4 (Keith Snook)
  176. output transformer for multiple amps
  177. Connecting amplifier chasis to earth ground, but not amplifier ground
  178. QSC1700
  179. Pioneer SA-610 - bypass the Pre-amp stage?
  180. Upgrading Transistors?
  181. Toroid Field being picked up by input transformer. Way to block this?
  182. free bryston 4b resurrection
  183. 2SA798
  184. universal Jfet source follower
  185. Amp advice prior to purchase -
  186. Which amp shall I build?
  187. Audio transformer (LT700) behaviour [newb]
  188. homemade amplifier
  189. Sansui R-70 bias
  190. Kenwood KA5700
  191. A question about a Linar 10 amp
  192. OP Amp oscillator sine wave too sharp
  193. tectronic SA-535
  194. A dive into the past
  195. Hafler 9303 transformer
  196. Debug my hum
  197. Transistors
  198. Yamaha rx-v373 making me pull my hair out!
  199. Servicing an amp: fuses, regulators, emitter resistors
  200. Pro Amplifier hum
  201. Pioneer Power Amplifier GM-6300T, No Output
  202. Storage of a vintage receiver
  203. project idea. custom amp board in old receiver
  204. Strange problems with transistors
  205. Newbie working with a IRS2092
  206. Ampzilla 2000
  207. Simple repair for a subwoofer amplifier? (ASW3000)
  208. Speaker Impedance - Class A Current
  209. 2SK216/2SJ79 Spice models for Multisim?
  210. News. Three-band repeater with a crossover in the economy class A.
  211. Commercial Solid State Amps with jumper controlled Modes "without NFB" and "with NFB"
  212. Yamaha CA 510
  213. KSA-250 changing mains voltage
  214. "Vintage" Rotel RX-875 Troubleshooting
  215. Luxman L100 muting circuit
  216. Replacement remote for HK6350R
  217. SS amplifier kit equivalent to Dynaco ST70?
  218. Amplifier Problems
  219. Thermal switch?
  220. bad clipping
  221. OPA2604: Worthwhile using better regs than LM317/337?
  222. B&K cs-115 preamp help
  223. Kenwood Model Eleven GX Bulb Replacement
  224. Hiraga woodfront.
  225. Strap a Cap
  226. Which amplifier kit to build
  227. Encapsulated insulated hex freds
  228. need help finding a replacement for a JRC 074D quade fet op amp
  229. Yamaha RX-V390 - Circuit Protection
  230. arcam alpha 10
  231. autobias via temperature and LUT
  232. RAISERAMP - a special transformer based
  233. Speaker relays
  234. 4 stage amplifier instabilities
  235. 2SB654 = MJ2955? N0!
  236. Marantz pm-64 mk2 missing factory caps ?
  237. Marshall 8100 buzz
  238. gfa-555 ii transistors
  239. Esound integrated amp
  240. Marantz PM-66SE KI - bin or repair?
  241. Invention for bias stability
  242. Hybrid Repeater in economy class A.
  243. Backwards WILSON current mirror?
  244. separate psu chassis for SS amp ?
  245. Linn Intek noisy channel
  246. Phase problem/question
  247. Yamaha CA-610II
  248. Threshold Cas-2
  249. my new amp b.m.c cs2
  250. overdriven OP

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