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  1. Quad 405 - DCD–Mod4 (Keith Snook)
  2. output transformer for multiple amps
  3. Connecting amplifier chasis to earth ground, but not amplifier ground
  4. QSC1700
  5. Pioneer SA-610 - bypass the Pre-amp stage?
  6. Upgrading Transistors?
  7. Toroid Field being picked up by input transformer. Way to block this?
  8. free bryston 4b resurrection
  9. 2SA798
  10. universal Jfet source follower
  11. Amp advice prior to purchase -
  12. Which amp shall I build?
  13. Audio transformer (LT700) behaviour [newb]
  14. homemade amplifier
  15. Sansui R-70 bias
  16. Kenwood KA5700
  17. A question about a Linar 10 amp
  18. OP Amp oscillator sine wave too sharp
  19. tectronic SA-535
  20. A dive into the past
  21. Hafler 9303 transformer
  22. Debug my hum
  23. Transistors
  24. Yamaha rx-v373 making me pull my hair out!
  25. Servicing an amp: fuses, regulators, emitter resistors
  26. Pro Amplifier hum
  27. Pioneer Power Amplifier GM-6300T, No Output
  28. Storage of a vintage receiver
  29. project idea. custom amp board in old receiver
  30. Strange problems with transistors
  31. Newbie working with a IRS2092
  32. Ampzilla 2000
  33. Simple repair for a subwoofer amplifier? (ASW3000)
  34. Speaker Impedance - Class A Current
  35. 2SK216/2SJ79 Spice models for Multisim?
  36. News. Three-band repeater with a crossover in the economy class A.
  37. Commercial Solid State Amps with jumper controlled Modes "without NFB" and "with NFB"
  38. Yamaha CA 510
  39. KSA-250 changing mains voltage
  40. "Vintage" Rotel RX-875 Troubleshooting
  41. Luxman L100 muting circuit
  42. Replacement remote for HK6350R
  43. SS amplifier kit equivalent to Dynaco ST70?
  44. Amplifier Problems
  45. Thermal switch?
  46. bad clipping
  47. OPA2604: Worthwhile using better regs than LM317/337?
  48. B&K cs-115 preamp help
  49. Kenwood Model Eleven GX Bulb Replacement
  50. Hiraga woodfront.
  51. Strap a Cap
  52. Which amplifier kit to build
  53. Encapsulated insulated hex freds
  54. need help finding a replacement for a JRC 074D quade fet op amp
  55. Yamaha RX-V390 - Circuit Protection
  56. arcam alpha 10
  57. autobias via temperature and LUT
  58. RAISERAMP - a special transformer based
  59. Speaker relays
  60. 4 stage amplifier instabilities
  61. 2SB654 = MJ2955? N0!
  62. Marantz pm-64 mk2 missing factory caps ?
  63. gfa-555 ii transistors
  64. Esound integrated amp
  65. Marantz PM-66SE KI - bin or repair?
  66. Invention for bias stability
  67. Hybrid Repeater in economy class A.
  68. Backwards WILSON current mirror?
  69. separate psu chassis for SS amp ?
  70. Linn Intek noisy channel
  71. Phase problem/question
  72. Yamaha CA-610II
  73. Threshold Cas-2
  74. my new amp b.m.c cs2
  75. overdriven OP
  76. Luxman L-450 Transistor Getting Hot
  77. Marantz pm-64 mk2
  78. Transrotary Input Selector anti oxidation Yamaha AX, Pioneer A series type
  79. Amplifier Frequency Turnover. When does it apply?!
  80. Amplifier Frequency Turnover. When does it apply?!
  81. preamp low volume and humming - Krell KRC-2
  82. polyester caps for power supply Any good?
  83. Experiencing a mysterious hum in a Parasound HCA-2200 II.
  84. Bridge Amplifier
  85. Improved OP
  86. NAD 3020 preamp channel broken
  87. Powered Subwoofer won't turn on...Please help!
  88. EXCELINEAR MKII
  89. Is it possible to bridge two subwoofer plate amps between circuit boards??
  90. mosfet question.
  91. Leak Delta 70
  92. Slightly abnormal question about a shaker
  93. I am a newbie and need help on the value of the potentiometer
  94. My CFA project
  95. SIT Transistors for audio ?
  96. rf problem
  97. Building amp small series...
  98. A stupid question about using capacitors to clean pre amp rails
  99. Speakers pop sounds (spikes) when fridge kicks in,Arcam Alpha 3
  100. Need help figuring out/finding a rotary switch
  101. Opto-controlled bias
  102. At what point is slew rate performance is inaudible?
  103. K176 + J50 pairing, any problems?
  104. Single-ended amplifier with balanced input on the lamp GM70
  105. Historic amps documented
  106. Luxman L-435 idle current
  107. Jeff Rowland Model 7 III help
  108. QUAD 405 (mod): DC clamp and ground schema
  109. Harman Kardon HK630 Amplifier Service Manual
  110. quad 303
  111. Technics SU-V470 out of balance
  112. NAIM NAIT 5 Mod Help
  113. Yamaha A-1000 Oscillates
  114. Suggest me a low-power Class A amp
  115. Sudden P28 Schematics
  116. db technologies Opera 405D
  117. amp to replace Crimson 40 watt modules
  118. help with Onkyo 7.1 repair
  119. US / EU - power
  120. Sanken fake transistors
  121. Help with Rotel voltage reconfiguration
  122. Linearising OPS
  123. CRT noise in amp
  124. Why do some designed specify braided cables?
  125. Attenuator before or after graphic? DSE A2760
  126. GAS Son of Ampzilla channel cut out
  127. Solid state amp w. magnetics
  128. NAD 2100 - single channel Hum Problem
  129. Yamaha Limitter
  130. Cap vs DC servo in global NFB tests
  131. Replacement for D01 6A4 rectifier diodes on Rega Mira
  132. Son's Docking Station Project?
  133. Limiter section
  134. NAD T955 Output Devices
  135. Hiraga class a 30 w amplifier
  136. McCormack DNA-0.5 schematics
  137. Change/Bypass High Pass Filter?
  138. Minimum rec. resistor wattage?
  139. Looking for a good quality preamp
  140. Bias current through class AB output pair
  141. How Much Amplifier Power Do i need?
  142. Crate PA-4 Distortion
  143. 120hz spikes at amp output, crappy layout or something else?
  144. bias on sansui au555
  145. Nakamichi RE-10
  146. Making a standby - quick question
  147. Amplifier circuits using BJT advice
  148. Dummy load for cooling fan?
  149. Help with McCormack DNA 0.5 protection circuit
  150. Hybrid single-ended output stage with a balanced input on the lamp 6S33S
  151. zetka zpe 500
  152. Benefits of a regulated power supply?
  153. Yamaha 100-b212
  154. WILS-CFP PROJECT
  155. RA-1412 problems
  156. Straightforward Class A - modest power
  157. MOSFET power supply switch with Isense
  158. Monster Class A (Genesis OPS)
  159. Quilted 120 hybrid amplifier Class A LAMP 6N6P
  160. class AB theory question
  161. Trick to search headphone amps by HI PSRR please?
  162. small/excellent amp recommendation for highs on active system
  163. Carver M500-T Amp - Power up the first 30 to 40 seconds no sound.
  164. Crest Audio LA601 Repair Help
  165. Op-amp input, class AB output. Loud thump sound
  166. Output stage transistor type
  167. SAE 2400L Repair Help Please
  168. Single-cycle symmetric (N - P - N channel + P - N - P channel) repeater plated input
  169. Denon DRA-835R Volume
  170. Bigun's TGM8 with Single Supply
  171. amplifier with 2sk170 input stage
  172. Arcam Alpha 10 Intergrated Output Transistors Location??
  173. Swapping germanium for silicon transistors?
  174. Substitute Transistors
  175. Debunker Strong X4 - 500 WRMS Hi-Fi Amp
  176. pioneer sa 1010 burning resistor
  177. Bypassing an op-amp Low Pass Filter
  178. Speaker protection
  179. Bad channel on TDA7492 amp.What to repair?
  180. driver module
  181. Tiger Pro 1800M amp schematic
  182. Current drive for Loudspeakers
  183. Distorted lamps
  184. Sansui AU-919 filter cap replacement options
  185. TPA3116 amp 50+50+100 wiring?
  186. Replace Sanken SAP16 with STD03
  187. schematics of Krell MDA300
  188. Buttons not performing the corect functions.
  189. Pottencially dead Crest Audio Vs1500
  190. NAD3020, no c422&c423?!
  191. James Sugden site
  192. McIntosh MC250 Capacitor replacement
  193. Cyrus Power power amp resurrection
  194. De-rating heatsink when enclosed?
  195. How Much RMS is Ekho RX2000 Power Amplifier ?
  196. Defectice Output Power Devices at Integr. Amps with Tone Control inside the NFB Loop
  197. mic preamp for recording interface
  198. BK ST-140 vs Conrad Johnson SA 250 Sonographe
  199. Suggestions for a balanced input class A amplifier
  200. Simulation of thermal compensation
  201. Luxman mk 2 combo
  202. Low volume channel
  203. Infinity RS IIA
  204. upgrade my 125 W power amp.
  205. What causes this kind of PCB exposure error?
  206. Carver PM-2.0T (PT-1250)
  207. Quad 520f Noise Problem
  208. Simple amp for loudspeaker tests
  209. Levinson ML-2 or No.23.5
  210. Crescendo Millenium problems
  211. Fully Regulated first stages
  212. Problem with AMPEG amp
  213. Suitable chassis
  214. Why so complex?
  215. Matching/pairing MOSFETs
  216. chip amps vs discrete power amps... does it matter?
  217. LM4702/ SAP15 board help needed
  218. Meistersinger VFA-200, A beginner’s first try in LTSpice
  219. Looking for replacement Arcam 10 components
  220. MARANTZ SC-80 HELP!
  221. Problem with 1977 Technics sa-5270 receiver
  222. Cambridge Azur 640A v1
  223. Channel switching with balanced inputs
  224. Best 50W subwoofer amplifier project?
  225. Hartke HA 4000 schematic request
  226. Tandberg Sølvsuper 75 - 14 HELP!
  227. ecdesign FET CIRCLOTRON ever tested
  228. Lite Audio M12 Power amp
  229. DC voltage on Output Speaker Arcam amplifier problem
  230. AF 124 germanium transistor pinout?
  231. Lab Gruppen amps IPD1200 and IPD2400
  232. Honey Badger vs ???
  233. citation 21 preamp - no right channel sound
  234. What is the Ft of a compound transistor
  235. amp kits from ebay
  236. Harman Kardon 330B
  237. Sugden A 48 Mark III
  238. want to build an Amp
  239. tape out line level modification??
  240. Upping the Watts
  241. figuring out Vo and Io of this op amp
  242. Power Switch
  243. Cap Tolerance - Recapping Audio Gear
  244. Blown up Warwick xtreme 10.1 Bass Amp
  245. Primare 30.5 amp issue on power on
  246. Pioneer a400 volume control
  247. 3-way active x-over - physical setup?
  248. Ideas to what might cause almost full supply voltage DC offset?
  249. yamaha rx-v2095 wont power on
  250. gm doubling

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