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  1. Need help with a Rotel RA-970BX
  2. Strange slight hum + noise issue
  3. SS Class A Input/Output AC-coupling caps: How big = too big?
  4. Audiosector LM3875 Amplifier Help! / Questions
  5. Cree CMF10120D
  6. Calculating current draw of SS Class A amp
  7. B&K amplifier ST140
  8. Voltage Regulator 'CV/ABV'
  9. RJM Audio R40 (make fun of my amp)
  10. monacor sta-500 schematic
  11. Schematic Monacor sta-500
  12. Electrocompaniet power amp repair
  13. Searching fro Proton 1100 Preamp
  14. Very simple quasi complimentary MOSFET amplifier
  15. subwoofer amplifier with 2sa1943&2sc5200
  16. Rotel RA-04: There is still sound even volume control is turned to zero.
  17. Simple class b amplifier problem
  18. Home theater subwoofer input board question
  19. Luxman LV-105u MOSFET upgrade success
  20. UA Solo-110 Regulator Problem
  21. Little dual mono... Any ideas?
  22. COUNTERPOINT NPS-100 BIAS
  23. Advice for new DIY Ampli
  24. modifying a Sanyo JCX-2600K
  25. Re-Capping Luxman M-120a Power Amp Advice sought
  26. Mark Levinson 23.5 bias procedure
  27. Recommend me a project.
  28. Opamp based power amp
  29. 25wpc mosfet mapl-in kit wipes floor with 2 x cambridge A60 biamp
  30. solid state plate amp KIT
  31. Just an observation about voltage swing in actively crossed-over tweeters.
  32. dirkwright line stage preamp
  33. Sought expert advice on my amplifier circuit
  34. Smokin' Marantz SR1000
  35. conterpoint NPS-100
  36. Dx Amplifiers, all models will be shown here
  37. A more efficient class A output stage
  38. Musical Fidelity A1 Channel Imbalance
  39. Headphone amp - POP sound will powering ON and OFF
  40. Multi pack smd/tht input transistos
  41. The many versions of the NE5532 and it is confusing!
  42. Quad 34 on/off switch. Desperate.
  43. Are Proton AA1660 amplifier still available?
  44. Recap with Reason: Sony TA-N80ES Amplifier Refurbishing Project
  45. Output power - high voltage or high current?
  46. Faulty JVC MX-GC5
  47. NAD 1300 - Problem with static
  48. voltage doubler for TPS7A4700
  49. Ultra Low noise voltage regulator IC till 80Volts?
  50. NAD amplifier disabling Power Envelope circuit
  51. STR-DN1000 power-up problem
  52. What solved the problem...
  53. Kenwood Ka-2600
  54. Rotel RA840BX service
  55. Finishing a custom made power amp...
  56. aqvox + primare
  57. NAD 3300 Amplifier repair question
  58. Proton AA1660 switch issue
  59. 2sk1058 for class A what should be the max heat dissipation preferred?
  60. need help with crest 2500 poweramp
  61. (ask) ZCA 2sk1058 mosfet amplifier
  62. Threshold SA-1 keep main fuse blown
  63. Two audio schematics-comment?!
  64. SuperA Class AMP "Nataly EA2012"
  65. V.2012 PRO. Composite Audio amplifier
  66. 900W Class H Power Amplifier
  67. PCB for audio ammplifier with mj15003/mj15004
  68. Creek 4240 Volume / channel issue
  69. Peavey PV-500 schenmatics.
  70. output inductor placement idea, does it work
  71. Help with ocillating amplifier !!
  72. What headphone amp to build?
  73. The David N.J.White 100W MOSFET amplifier
  74. "Dumb" Krell Class A Question
  75. Quad 306, an underrated masterpiece?
  76. Yamaha PC-2002M
  77. Marantz 1090 shorted output stage
  78. Audiophiler Capacitor Red compared to any Mundorf Supreme as coupling cap?
  79. curious observation re: Hafler TA-1100
  80. LME49810 minimum safe working voltage not according to the datasheet
  81. Experience with Savoy G3
  82. Rotel RA-840BX3 repair?
  83. Help hooking up transformer
  84. Hafler dh200 2sk134 mosfet transistor
  85. pioneer sx1010 zener diode voltage
  86. Adcom GFA 5400 questions
  87. Measuring Power Amp Output Impedance
  88. Skytec PA-200, smoke and volume not working
  89. NAD 7155 Preamp help needed
  90. cyrus 8v2 with buzz after 2 hours
  91. Wilson-Cfp by Stee
  92. Problem with DC offset and stability
  93. Sansui AU-517 Capacitor Recommendation
  94. Acurus RL11
  95. Kenwood KR-V55r DC present on both channels. A lot.
  96. Pioneer sx 1010 power problem
  97. Onkyo M-504 Upgrade to LED lights? Help!
  98. Subwoofer amp - too much bass!
  99. Help to fix C-Audio GB402 Amplifier
  100. NAD C320 fixed (another protection circuit problem)
  101. If replacing differential input pair; also replace current source transistor?
  102. One single output pair per channel is a good thing ?
  103. Quad 99 system transformer hum
  104. calculating the resistor & capacitor values in class a amplifier
  105. Lots of noise when input is unconnected
  106. Mosfet source follower output impedence
  107. Harman/Kardon 430 - Need help with strange powerup noise
  108. Gallien Krueger 800RB Hi Channel Problem
  109. Transistor heatsink question
  110. lme49810 DC servo circuit.
  111. 300w power amp
  112. What can cause noise in this design?
  113. SYBELIUS 3 plus - ultimate high design
  114. Help repairing Sub AMP
  115. Sansui Diamond Differential PA Simulation and possible build
  116. Krell KV300i input selector board removal
  117. Replacment transistor for hitachi 2sc2b1 ? Its in a Sansui AU 555 A
  118. Yamaha M45 low pwr issue pretty interesting.
  119. Brocken amp..noise like thunder
  120. Rails Decoupled SE Amplifier
  121. DVD/CD output and power amp input specification.
  122. Bose 550 Receiver Has DC on outputs
  123. AEQ model 250 schematic
  124. Transformer coupling instead of cap?
  125. Krell 200S
  126. HH Electronic VX-150 MosFet
  127. Power supply for power amp.
  128. Making a VCO. Design help needed.
  129. DoZ in a Hafler 220? Or. . .?
  130. Roland RE-201 tapeecho improvements
  131. Burmester 933 mk2 Clone from Jims Audio
  132. Harman-Kardon hk6200 repair
  133. Needed - Service Manual For Luxman L-110
  134. Powering front end of amplifier
  135. New Project: The Silver Fox
  136. Dual Diff Amp Question
  137. What can I build with these? 4 pairs of 2SC5200/2SA1943
  138. LM 3915 mode change
  139. Pioneer SX-1080, after re-cap problem w. center voltage & idle current
  140. CFA Enhancements
  141. Peavey PV900 schematics
  142. Power amp ideas.
  143. Got taken on yasmaha m45
  144. Marlboro PA chip conversion question
  145. Diagrams required
  146. Another 100W hifi amp
  147. Repair help needed - Creek Destiny
  148. Power Supply for PGA2310 project
  149. yamaha b1 amp
  150. Parasound HCA-800II and C/PT-600
  151. Peavey Delta Blues Reverb Mod
  152. Help, In need of Service Manual for Cambridge Azur 640A V2
  153. NAD 7250PE Repair From Driving a Shorted Voice Coil?
  154. Need help with college project - Trying to build a 3 stage amp but I'm lost
  155. Digital Attenuator for Balanced Lines?
  156. Onkyo R1 AV amp
  157. GFA 5503 Bias adjustment
  158. Onkyo Dynamic Four 800 - Schematic for modification
  159. yamaha A-1020 amp
  160. Changing my old VFA designs into ONE-BEND CFA plus Current Drives
  161. H/K Citation Sixteen Parts
  162. Rotel Rb890 hum on one Channel
  163. Sansui AU555-A D001/D002 replacment diode?
  164. Diamond Wilson CFP - Roger Amp
  165. DIY Buffer Pre Amplifier with phono stage
  166. Single ended class a build. noob question
  167. Experimentations on Regulators
  168. Perfect Stranger - Innovative Amplifier
  169. Pioneer amp board with IC drivers.
  170. Technics SA-80 distorted right channel
  171. Please help educate - T300 & VSSA level matching
  172. transformer amplifier zero feedback
  173. What do these resistors do? :(
  174. Watercooled HEXFET Power Amplifier
  175. A simple question about performance
  176. bridge adapter
  177. CROWN DC-300A SERIES II RESTORATION
  178. OLDER PIONEER PREMIER Specific Amp line
  179. Resurrecting a BGW 750B
  180. Op-amp swapping MC330789 to OPA627
  181. Sudgen p28 Bias current
  182. Rotel service manual biasing...
  183. My Blameless
  184. Amber Series 70 Fuses
  185. Bi-Pak AL60
  186. yamaha M35 amp led meter
  187. Yamaha M45 amp led circuit schematic
  188. Does this amplified topology have a name
  189. The affect of mismatched impedance
  190. Acurus A150
  191. trace acoustic ta100r repair help
  192. New to forum - Buzzing noise
  193. resistor colour code
  194. help!!!!
  195. Arcam Alpha 10 overheating issues
  196. TEAC AG 4200 relays?
  197. Unique CFA 120/230W amp
  198. Direct NFB Pure Amplifier 2
  199. Crimson CS 620D
  200. Sansui 350
  201. Driving a 4-8R speaker with a single transistor Class A amp?
  202. Turbo 225 amplifier (SGS)
  203. excelinear 2014
  204. CFP OUTPUT 100W*2 MX100 MY design
  205. Amp starts humming when volume pot is attached
  206. Cannot get 2SK170 2SJ74 Spice model to pass more than 0.4mA
  207. Second opinions on balanced inputs
  208. Availability of "current-drive" amplifiers as commercial products
  209. Amp with unfamiliar input stage - DC offset problem
  210. 2SJ118/2SK413 schematics
  211. Making a bipolar electrolytic capacitor
  212. Sap Transistors?
  213. Twisting transformer secondary's
  214. Adcom gfa-555ii killed my speakers
  215. Crown DC-300A No Mono/Dual Switch
  216. Repairing surround channels on a Marantz RS3559
  217. Behringer GM110
  218. can I have 5 m cable, quad 35 to 405 amp
  219. NAD 3125 Circuit Diagram
  220. pioneer stereo reciever sx-1080
  221. common value of output stage noise in uV?
  222. Dynacord L2400 output board schematic
  223. Bryston 3B Restoration problems
  224. Protect Headphone Amplifier Output from Accidental Arcing of Electrostatic Driver
  225. Prototype Printed Circuit Board vendors
  226. Where to find Toshiba Semiconductors today (2SK389, 2SJ109, 2SK170, etc?
  227. Musical Fidelity A1000
  228. Parasound 2250 Amp Schematics?
  229. Crown Macro Reference Bias calibration
  230. DC blocking caps in modern amplifiers?
  231. Replacing capacitors in the tuner area
  232. Source of 680nF 2% caps.
  233. first amplifier build. will my schematic work?
  234. kenwood basic M2 problem
  235. Looking for Soundcraft Spirit FX8 Schematic/Info
  236. Which combinations of transistors should thermally track
  237. Technics SA-300: dead FM tuner
  238. Krell KMA-160 schematic and biasing info needed
  239. MCU from NAD T-752
  240. gemini vintage amp need info please
  241. Help with TeddyReg
  242. NAD S300 normal operating temperature?
  243. Harmon Kardon HK650
  244. MARK LEVINSON 33X series caps..Whats best???
  245. Adding a second input channel to my diy amp. how to?
  246. Circuit for a 2.1 system?
  247. Bush Amplifier Distorted.
  248. Yamaha CA 510 Meter lights
  249. Amps' power - which is real the bottleneck ?
  250. Sansui AU 555a One dead channel ? No power ?

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