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  1. TEAC AG 4200 relays?
  2. Unique CFA 120/230W amp
  3. Direct NFB Pure Amplifier 2
  4. Crimson CS 620D
  5. Sansui 350
  6. Driving a 4-8R speaker with a single transistor Class A amp?
  7. Turbo 225 amplifier (SGS)
  8. excelinear 2014
  9. CFP OUTPUT 100W*2 MX100 MY design
  10. Amp starts humming when volume pot is attached
  11. Cannot get 2SK170 2SJ74 Spice model to pass more than 0.4mA
  12. Second opinions on balanced inputs
  13. Availability of "current-drive" amplifiers as commercial products
  14. Amp with unfamiliar input stage - DC offset problem
  15. 2SJ118/2SK413 schematics
  16. Making a bipolar electrolytic capacitor
  17. Sap Transistors?
  18. Twisting transformer secondary's
  19. Adcom gfa-555ii killed my speakers
  20. Crown DC-300A No Mono/Dual Switch
  21. Repairing surround channels on a Marantz RS3559
  22. Behringer GM110
  23. can I have 5 m cable, quad 35 to 405 amp
  24. NAD 3125 Circuit Diagram
  25. pioneer stereo reciever sx-1080
  26. common value of output stage noise in uV?
  27. Dynacord L2400 output board schematic
  28. Bryston 3B Restoration problems
  29. Protect Headphone Amplifier Output from Accidental Arcing of Electrostatic Driver
  30. Prototype Printed Circuit Board vendors
  31. Where to find Toshiba Semiconductors today (2SK389, 2SJ109, 2SK170, etc?
  32. Musical Fidelity A1000
  33. Parasound 2250 Amp Schematics?
  34. Crown Macro Reference Bias calibration
  35. DC blocking caps in modern amplifiers?
  36. Replacing capacitors in the tuner area
  37. Source of 680nF 2% caps.
  38. first amplifier build. will my schematic work?
  39. kenwood basic M2 problem
  40. Looking for Soundcraft Spirit FX8 Schematic/Info
  41. Which combinations of transistors should thermally track
  42. Technics SA-300: dead FM tuner
  43. Krell KMA-160 schematic and biasing info needed
  44. MCU from NAD T-752
  45. gemini vintage amp need info please
  46. Help with TeddyReg
  47. NAD S300 normal operating temperature?
  48. Harmon Kardon HK650
  49. MARK LEVINSON 33X series caps..Whats best???
  50. Adding a second input channel to my diy amp. how to?
  51. Circuit for a 2.1 system?
  52. Bush Amplifier Distorted.
  53. Yamaha CA 510 Meter lights
  54. Amps' power - which is real the bottleneck ?
  55. Sansui AU 555a One dead channel ? No power ?
  56. Pioneer SA-610 mods to improve sound quality
  57. Honeybadger or Gainclone?
  58. It seems I only use 1W of amp power.. Can it be right?
  59. Increasing slew rate and stability
  60. The most bizzare problem I have come across
  61. Aragon 8008 x 3 blew my woofers?
  62. Phase Linear
  63. Yamaha M-85 Bias Voltage Does Not Increase In "Auto A" Switch Position
  64. Rather simple high quality reference amp (~200W @ 4 ohm, VFA)
  65. What is Monaural, Dual mono, stereo in fact?
  66. Why does CFP output require much less bias than EF?
  67. No Input Select at Kenwood's Integrated Amp A-1001
  68. Quad 405 - DCD–Mod4 (Keith Snook)
  69. output transformer for multiple amps
  70. Connecting amplifier chasis to earth ground, but not amplifier ground
  71. QSC1700
  72. Pioneer SA-610 - bypass the Pre-amp stage?
  73. Upgrading Transistors?
  74. Toroid Field being picked up by input transformer. Way to block this?
  75. free bryston 4b resurrection
  76. 2SA798
  77. universal Jfet source follower
  78. Amp advice prior to purchase -
  79. Which amp shall I build?
  80. Audio transformer (LT700) behaviour [newb]
  81. homemade amplifier
  82. Sansui R-70 bias
  83. Kenwood KA5700
  84. A question about a Linar 10 amp
  85. OP Amp oscillator sine wave too sharp
  86. tectronic SA-535
  87. A dive into the past
  88. Hafler 9303 transformer
  89. Debug my hum
  90. Transistors
  91. Yamaha rx-v373 making me pull my hair out!
  92. Servicing an amp: fuses, regulators, emitter resistors
  93. Pro Amplifier hum
  94. Pioneer Power Amplifier GM-6300T, No Output
  95. Storage of a vintage receiver
  96. project idea. custom amp board in old receiver
  97. Strange problems with transistors
  98. Newbie working with a IRS2092
  99. Ampzilla 2000
  100. Simple repair for a subwoofer amplifier? (ASW3000)
  101. Speaker Impedance - Class A Current
  102. 2SK216/2SJ79 Spice models for Multisim?
  103. News. Three-band repeater with a crossover in the economy class A.
  104. Commercial Solid State Amps with jumper controlled Modes "without NFB" and "with NFB"
  105. Yamaha CA 510
  106. KSA-250 changing mains voltage
  107. "Vintage" Rotel RX-875 Troubleshooting
  108. Luxman L100 muting circuit
  109. Replacement remote for HK6350R
  110. SS amplifier kit equivalent to Dynaco ST70?
  111. Amplifier Problems
  112. Thermal switch?
  113. bad clipping
  114. OPA2604: Worthwhile using better regs than LM317/337?
  115. B&K cs-115 preamp help
  116. Kenwood Model Eleven GX Bulb Replacement
  117. Hiraga woodfront.
  118. Strap a Cap
  119. Which amplifier kit to build
  120. Encapsulated insulated hex freds
  121. need help finding a replacement for a JRC 074D quade fet op amp
  122. Yamaha RX-V390 - Circuit Protection
  123. arcam alpha 10
  124. autobias via temperature and LUT
  125. RAISERAMP - a special transformer based
  126. Speaker relays
  127. 4 stage amplifier instabilities
  128. 2SB654 = MJ2955? N0!
  129. Marantz pm-64 mk2 missing factory caps ?
  130. Marshall 8100 buzz
  131. gfa-555 ii transistors
  132. Esound integrated amp
  133. Marantz PM-66SE KI - bin or repair?
  134. Invention for bias stability
  135. Hybrid Repeater in economy class A.
  136. Backwards WILSON current mirror?
  137. separate psu chassis for SS amp ?
  138. Linn Intek noisy channel
  139. Phase problem/question
  140. Yamaha CA-610II
  141. Threshold Cas-2
  142. my new amp b.m.c cs2
  143. overdriven OP
  144. Luxman L-450 Transistor Getting Hot
  145. Marantz pm-64 mk2
  146. Transrotary Input Selector anti oxidation Yamaha AX, Pioneer A series type
  147. Amplifier Frequency Turnover. When does it apply?!
  148. Amplifier Frequency Turnover. When does it apply?!
  149. preamp low volume and humming - Krell KRC-2
  150. polyester caps for power supply Any good?
  151. Experiencing a mysterious hum in a Parasound HCA-2200 II.
  152. Bridge Amplifier
  153. Improved OP
  154. NAD 3020 preamp channel broken
  155. Powered Subwoofer won't turn on...Please help!
  156. EXCELINEAR MKII
  157. Is it possible to bridge two subwoofer plate amps between circuit boards??
  158. Behringer EP2500 Repair
  159. mosfet question.
  160. Leak Delta 70
  161. Slightly abnormal question about a shaker
  162. I am a newbie and need help on the value of the potentiometer
  163. My CFA project
  164. SIT Transistors for audio ?
  165. rf problem
  166. Building amp small series...
  167. A stupid question about using capacitors to clean pre amp rails
  168. Speakers pop sounds (spikes) when fridge kicks in,Arcam Alpha 3
  169. Need help figuring out/finding a rotary switch
  170. Opto-controlled bias
  171. At what point is slew rate performance is inaudible?
  172. K176 + J50 pairing, any problems?
  173. Single-ended amplifier with balanced input on the lamp GM70
  174. Historic amps documented
  175. Luxman L-435 idle current
  176. Jeff Rowland Model 7 III help
  177. QUAD 405 (mod): DC clamp and ground schema
  178. Harman Kardon HK630 Amplifier Service Manual
  179. quad 303
  180. Technics SU-V470 out of balance
  181. NAIM NAIT 5 Mod Help
  182. Yamaha A-1000 Oscillates
  183. Suggest me a low-power Class A amp
  184. Sudden P28 Schematics
  185. db technologies Opera 405D
  186. amp to replace Crimson 40 watt modules
  187. help with Onkyo 7.1 repair
  188. US / EU - power
  189. Sanken fake transistors
  190. Help with Rotel voltage reconfiguration
  191. Linearising OPS
  192. CRT noise in amp
  193. Why do some designed specify braided cables?
  194. Attenuator before or after graphic? DSE A2760
  195. GAS Son of Ampzilla channel cut out
  196. Solid state amp w. magnetics
  197. NAD 2100 - single channel Hum Problem
  198. Yamaha Limitter
  199. Cap vs DC servo in global NFB tests
  200. Replacement for D01 6A4 rectifier diodes on Rega Mira
  201. Son's Docking Station Project?
  202. LIMITER SECTION
  203. NAD T955 Output Devices
  204. Hiraga class a 30 w amplifier
  205. McCormack DNA-0.5 schematics
  206. Change/Bypass High Pass Filter?
  207. Minimum rec. resistor wattage?
  208. Looking for a good quality preamp
  209. Bias current through class AB output pair
  210. How Much Amplifier Power Do i need?
  211. Crate PA-4 Distortion
  212. 120hz spikes at amp output, crappy layout or something else?
  213. bias on sansui au555
  214. Nakamichi RE-10
  215. Making a standby - quick question
  216. Amplifier circuits using BJT advice
  217. 1000 Watt Hifonics Amp
  218. Dummy load for cooling fan?
  219. Help with McCormack DNA 0.5 protection circuit
  220. DIY Class A BJT Guitar Preamp problems
  221. Hybrid single-ended output stage with a balanced input on the lamp 6S33S
  222. zetka zpe 500
  223. Benefits of a regulated power supply?
  224. Yamaha 100-b212
  225. WILS-CFP PROJECT
  226. RA-1412 problems
  227. Straightforward Class A - modest power
  228. MOSFET power supply switch with Isense
  229. Monster Class A (Genesis OPS)
  230. Quilted 120 hybrid amplifier Class A LAMP 6N6P
  231. class AB theory question
  232. Trick to search headphone amps by HI PSRR please?
  233. small/excellent amp recommendation for highs on active system
  234. Carver M500-T Amp - Power up the first 30 to 40 seconds no sound.
  235. Crest Audio LA601 Repair Help
  236. Op-amp input, class AB output. Loud thump sound
  237. Output stage transistor type
  238. SAE 2400L Repair Help Please
  239. Single-cycle symmetric (N - P - N channel + P - N - P channel) repeater plated input
  240. Denon DRA-835R Volume
  241. Bigun's TGM8 with Single Supply
  242. amplifier with 2sk170 input stage
  243. Arcam Alpha 10 Intergrated Output Transistors Location??
  244. Swapping germanium for silicon transistors?
  245. Substitute Transistors
  246. Debunker Strong X4 - 500 WRMS Hi-Fi Amp
  247. pioneer sa 1010 burning resistor
  248. Roland SPA-240
  249. Bypassing an op-amp Low Pass Filter
  250. Speaker protection

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