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  1. Strange problem with NAD 1020a pre-amp
  2. 2SJ74 NI Multisim model please
  3. Power Amp Front End with integr. OpAmp and Signal Pad by Power Supply Rail - Naming?
  4. Nakamichi RE-2 Receiver. Possible upgrades ?
  5. Thermal Track transistors bias stability at 25V 1Amp?
  6. Quad 303: setting 33.5V problem
  7. Yamaha RX-V690
  8. Luxman L1 problem
  9. Topaz Line 2 Power Conditioner
  10. question on speaker protection circuit
  11. Replacing low value electrolytics with film caps ?
  12. SCR for my Soundcraftsmen MA-5002
  13. What was this amplifier?
  14. Output impedance of Yamaha CA610ii headphone jack
  15. erno borbely super shunt regulator
  16. NAD 2200 power supply - time to recap?
  17. Parasound HCA-2200 service manual
  18. Yamaha CA-610ii
  19. Help with a dead Pioneer A-447
  20. Pioneer SA-7300 advice needed.
  21. Sanyo System 566 Right Channel Broke HELP!!!!
  22. Ask for help of this mosfet output amp
  23. Aux Audio power supply
  24. Please help me convert this amp
  25. Some questions about this kind of current source
  26. AZUR851A schematic (of amp PCB only) anyone?
  27. Tda1515bq amp portable speaker
  28. The Ultimate Amp??
  29. IC for Subwoofer?
  30. hifonics brutus brx2400.1d
  31. Upgrade Marantz PM-54 II phono stage
  32. Tesla NZC-431 Repair
  33. NJW0281G / NJW0302G instead of 2SC5200/2SA1943
  34. Fixed Bias (no bias control) and Upgrading Output Transistors
  35. How important is the preamp?
  36. Ask for help... buffer add to curcuit with DC servo becomes unstable
  37. Custom Heatsink
  38. Marantz 2230 weirdness.
  39. TO-220 output transistors for power amp
  40. My own 80W/8R amplifier need help
  41. I need help on an SS design
  42. Sony STR-DE675 problem..
  43. super simple DC detect for balanced amp
  44. How to build a Hackernap ?
  45. Choice of nulling trimmer and slew rate with CA3140T Op-Amp
  46. Magnum IA 170 ....
  47. TL072 Upgrade
  48. Need Parasound DR40 Schematic
  49. What can I do with 2 AMP (nope not monos) ?
  50. AKG C414 B uls mysterious electrical noise problem
  51. Total no0b question on a Sony N80ES amp
  52. Schematic help! Take a look at this NAD 2600A diagram
  53. Repairing a Luxman l-410...
  54. Yamaha R9
  55. MJL3281 Vbe matching
  56. What is this amp, and what do you think of it?
  57. Amp Output Testing
  58. SIT 2SK82 Circlotron Power Buffer
  59. SECA Kit By Colin Wonfor
  60. Right channel not working properly on Technics amp
  61. Issues with Musical fidelity A1
  62. Yamaha RX-V793
  63. Crown XLS 802
  64. ever heard of Motorola 7151
  65. Powered Mixer on but no sound heat sink not getting hot
  66. Arcam FMJ A22 Flashing Red Power LED
  67. Improve a Rotel amp THD by 20dB!
  68. Onkyo A8700 Blowing fuse
  69. NAD 2600 will not turn on !
  70. Diy class a 5W amplifier
  71. Multi Channel Amplifier Power, Preamp and Digital Grouding
  72. Looking for service manual Para JC1's
  73. What this colors mean ?
  74. EV 2.0kw class H high rail oscillation?
  75. H-K 520 blowing power fuse
  76. Service manual BGW PS 3
  77. How powerful should an amplifier be?
  78. trying to find Crown's service theory pdf(odep)
  79. Potentiometer replacement for Sony TA FA 777 ES
  80. Onkyo TX-NR808 fault
  81. Aiwa amplifier with power supply electronic voltage switch?
  82. please help!DC voltage in AV400 amp output
  83. Please help Yamaha rx-1030 problem
  84. Help with a factory reset
  85. Crest CA-18; one channel died peacefully
  86. crackling noise Pioneer SA-8500
  87. P3A amp shutdown 'plop'
  88. Chinese made Kit solid state Amplifiers on Ebay
  89. Bass blocking cap at amp input
  90. Does the Crown K2 inject delay? How to test?
  91. Parasound HCA-1000a Refresh
  92. Need some help with an active system
  93. Power at 8ohm, 4 and 2....
  94. Pioneer sc-lx71 blowing fuses
  95. Volume potentiometer replacement,pins.
  96. Interesting bit on capacitors....
  97. Phase Linear 700b refurb and full complementary conversion
  98. Yamaha AX-630
  99. What kind of capacitors inside this ?
  100. Wharfedale SW150 Active Subwoofer help
  101. Single Supply Amp
  102. Dynaco Stereo 400 - suggested TLC?
  103. In your class AB designs generally where is your second pole?
  104. Need spice model for 2SA1163
  105. Amplifier
  106. What is responsible for "control" of loudspeakers?
  107. Harmon Kardon-870 no lights
  108. Dynaco ST-100? I would much appreciate any info on this model.
  109. reparing old amplifier tectronic sa 535
  110. Best PJFET for CCS?
  111. keep smokin transistor!!
  112. Audio Innovations Alto mk 1
  113. Add more inputs to vintage preamp?
  114. turn on pop noisy standby
  115. Mosfet hybrid offset issue
  116. Need help ns450 200 watts amp bias adjust
  117. Schematic for 2SK351 - Quasi?
  118. About op-amps use.
  119. Module amp build help
  120. Op-amp decoupling - best practice?
  121. Rotel RB-980BX schematic
  122. Crown Pro amp ground up refurbish?
  123. Rod Elliot P68 Output DC offset.
  124. Discrete Tandy/Realistic transistor amp: Thermistor?
  125. Miniature bulbs replacement rule?
  126. CRELL and Konzert Schematics
  127. SIT amp simmulation, 2SK79+2SK82 push-pull
  128. Any suggestions on who to upgrade HCA-3500
  129. Technics ampifiers put an end to it's disgusting reviews yes or no for it to be!
  130. jbl vrx 932LAP/918SP schematics needed
  131. Qsc 850 help
  132. TIP3055/TIP2955 ST semi wierd(please help)
  133. Assembling an HDMI to 5.1/7.1 system
  134. Would amp designers (e.g. Pass) replace old caps?
  135. calculating high-pass filter for these components
  136. Uneven slew rates, does it matter?
  137. Luxman L-85V
  138. Troubleshooting stereo amplifier
  139. Akai AA-V1500 Amplifier Repair Help
  140. L20 V9.2
  141. Biasing MJ2955 and 2N3055
  142. Adcom 565 mono block with strange issue
  143. Luxman L-510 capacitors?
  144. Is this another DC offset question?
  145. Amplifier Akai am-u33, powers on, but no sound
  146. transistor heat excess and upgrade components
  147. Building a Quad 306 Clone
  148. Basic Amplier Toubleshooting
  149. Luxman R-113 relay(?) issue
  150. Need spice model for 2SA1618 and 2SC4207
  151. Bogus amplifier
  152. Sugden A21a...hummy
  153. Speaker protection relay issue
  154. Bridging w/ Input Transformers?
  155. Why not use emitter coupled matched pairs instead of emitter resistors?
  156. Technics SU-2400
  157. BGW 750C Recap, help a newbie out?
  158. BPA200 LM4780 Board (Unfinished) Design
  159. Oliver bias set point for class AB power amps
  160. Magnetic field of brushless DC fan
  161. Buy or build?
  162. LeachAmp power up
  163. k10 power amplifier
  164. Protection relays
  165. Any other method of killing bandwidth of an amp besides a large compensation cap?
  166. New to the forums
  167. How close should the +/- rails mirror each other
  168. Uso de diodos MUR3060
  169. Help with my new "old" SS anp.
  170. Sansui G6000 clone BY Dx .... not mine, just something i have prepared to share
  171. CYRUS 6 Amplifier please help
  172. Back to back diodes at inputs of opamps
  173. Amplifier speakers relay: how to pop open the cap on them?
  174. Grounding (Power Vs Signal)
  175. Pioneer A400 Volume Pot Replacement
  176. LME49811 with KSA1381 as headphone amplifier 600ohm imp
  177. Counterpoint SA 20 Amp Blowing Main fuse
  178. Celestion 6000 system...
  179. HK Citation 16 (Not the A model)
  180. Using a line preamp to drive headphone
  181. Nad amplifier c 352 with pop sound from speakers?
  182. Dynaco - ST 400 PC-29 mods/upgrades
  183. Transformer Upgrade
  184. Thermaltrak Amplifier Project (assembling soon!)
  185. Tivoli Model One Problem
  186. AU-999 with new Caps still "pops"
  187. I would like a few ideas..
  188. Does change of high speed power transistor/rectifier increase the dynamic
  189. MX50SE LJM 2015
  190. offset won't zero
  191. Amp working but bulb tester glows
  192. KEC Transistor Data Sheets
  193. Why no fully differential circuits?
  194. Advice for Amplifier Bias
  195. Another variation to the MCA amplifier
  196. Need help powering up diy amp for the first time
  197. Replacement for 2SC2362
  198. Data sheet Sanyo STK0231
  199. 2 channel amp recommendations
  200. Just won a AB International 600LX, what to check first?
  201. Crown K2 repair project
  202. Pkn Xd6000 amp for B&C 18SW115 drives
  203. quad 405 amplifier and clone boards from China
  204. Lafayette Radio Int. Amplifier
  205. Interview at Hi-fi Answers
  206. Quad 34 preamp all lights on problem
  207. First discrete BJT Amp
  208. Input Coupling Capacitor
  209. Weird idea for a Quad 303 housing
  210. Looking for a good value pre-amp
  211. Example of CFP output stage with dual rails?
  212. AudioResearch D240 mkI or mkII
  213. Compensate Bias for DC offset?
  214. best Value in used high power amps?
  215. Bias and balance adjustment for Hafler DH-120
  216. Rotel RA 500
  217. Yamaha DSP-3070 vs Marantz PM6005/Simlar
  218. Recapping a Quad 303
  219. Amplifier Gain
  220. How much better is steel casework vs aluminium (aluminium) for shielding?
  221. NAD C370 dead?
  222. Spectral DMC-10 Repair Help
  223. Adcom GFA-5400 / Help please...
  224. Musical Fidelity B1 Overhaul
  225. Adcom 535 help.
  226. nad c370 loses right channel
  227. Leach based amplifier design
  228. HERE is the Entire Spectral DMC-6 Owners Manual
  229. TIP35C/36C quick help needed
  230. Transistors Substitute
  231. Can anyone identify the source of the problem?
  232. Dayton Amplifier
  233. the users of Kenwood KA2200 sigma drive indicator pls help
  234. what do you think of this design?
  235. What are these capacitors?
  236. SAE 310 Transistor replacement info
  237. QUAD 99 power amp
  238. Help troubleshooting yamaha ms400 please
  239. How to set bias on a vintage amp with all new trannies ?
  240. DC Servo DIY Kit for DCCancellation
  241. My new amp
  242. Opinion about PCB
  243. Threshold T400 repair, need help
  244. Luxman M-4000 problems
  245. What amp for this box ?
  246. Old grundig offset level
  247. Where to start when green
  248. Non Super Tramp Trace Elliot (TDA1514A)
  249. Buttkicker bka-130-c
  250. Low "Ft" TO-3 transistors vs high "Ft" ?

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