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  1. Soundstandard ES200 schematics anyone ??
  2. Playmaster Series 200 Circuit
  3. DC offset adj in JE990
  4. Korting Transmare A500 - vintage German amp, with issues!
  5. Tekko draws something from his head
  6. Vintage Toshiba 330 power amp problem, possible repair?
  7. Complementary Power MOSFETs
  8. Old class A design with 2SK146 dual JFET
  9. Balanced NoGNFB With Cross-Linked Input Stage
  10. MC2505 problem
  11. Bridging two 300W in 8 ohm amplifier to drive 1200W in 8 ohm
  12. Can a very simple class A amp produce great sound?
  13. you gotta be kidding !
  14. How to find the transfer function of this volume control?
  15. NAD C370 - red light
  16. Marantz SR1040 no output
  17. Mosfet question ( help needed )
  18. Trouble with Denon PMA-520 bias adjustment
  19. What is the importance of IQ in a common emitter stage?
  20. what is the role of the 68pf and 2200pf cap in Hiraga Super class A 30W
  21. Zero FeedBack Amp
  22. Motorola Solid State
  23. Is it worth modding a Marantz PM66SE
  24. Cyrus 3 2nd stage fault.. HELP!
  25. Carver CM-1090 pre/pro help?
  26. Krell KSA 50 clone power supply.
  27. Pioneer receiver mods
  28. Are ground planes in audio pcbs legit?
  29. Radio
  30. Suggestions for output pairs
  31. First amp I ever built - An excellent simple class A amp for beginners
  32. Does anyone know.......
  33. bow technology is still live?
  34. Esoteric Asr schematic
  35. I need help getting started with an Onkyo M-501
  36. High Power, High Fidelity Lateral MOSFET Power Amplifier
  37. Cheaper way to test power supply stability?
  38. Battery Type for Portable Speakers
  39. high rail voltage chip amps?
  40. class A output stage without feedback for a DAC?
  41. Need help hooking up Ashly P70-400
  42. Surprising polycarbonate caps
  43. Cordell OF THE Amplifier
  44. help changing the crossover setting of my class A/B subwoofer plate amp
  45. catfet amplifier
  46. Did one sell Krell amp after building LM4702?
  47. is current in speaker load to be anyway closer to psu current ratings?
  48. Krell KRC-2 service-manual?
  49. Sound project Module
  50. Rega Brio-R design
  51. Scratchy sound coming from speaker
  52. Dx Zim (Zimmer) SMPS will be developed to release
  53. Grounding scheme and loop breaker, need advice..
  54. Sony TA-FE230 Left Channel Weak
  55. I need pcb for this scheme
  56. How to repair and diagnose amp problem?
  57. WAV File Reproduction Sound Project
  58. the Inverting stage
  59. What about car amps?
  60. Audiolab 8000p stopped working.
  61. Ampeg svt 3 pro Power Amp
  62. McIntosh amp smoking
  63. 2 x 15W rms Audio Amp for small speakers
  64. Mickey Mouse PA Amplifiers and Mixers (two brands MM + PAiCE) - Schematics wanted
  65. channel sound loss scott 350R
  66. Need information for MM AP360 Amplifier
  67. Help me please with NAD S300
  68. Arcam AVR-100
  69. Sansui AU-217 issues
  70. Marantz PM44SE power/relay? issues
  71. Rotel RC-1070 Preamp PSU Repair
  72. home wiring is old knob and tube-no ground plug
  73. Should I let unused amps sit or power them up and use them on occasion.
  74. i need LUXMAN L-570 service manual
  75. Luxman 115 preamped into Concept 16.5?
  76. NAD T752 Repair Advice
  77. Goldmund schematics
  78. The Spanish Trio 5700 story
  79. Newbie trying to learn about my GFA-535 internals
  80. Help: A question regarding PCB to PTP?
  81. Converting single-ended signal to balanced causes background noises
  82. LME49830 question
  83. It helps to select best class power amplifier (AB- 40-50 watts)
  84. Transformer for Nytech CA252 Amplifier
  85. Dynaco st120
  86. How good / bad is this amp made?
  87. Efficient Subwoofer Amplifier
  88. Need Help With BUZ901/906 MOSFET Amplifier
  89. Current conveyor
  90. Question on Transistor amplification
  91. Output subs for 2sa1301 & 2sc3280
  92. Technics SA-R 410
  93. Another "ancient" amp
  94. Burnt out transistors - replace with same or something better? Rotel RB-991
  95. Help with Adcom GFA555-II
  96. Sansui ba-5000 Large Cap Removal Help Needed
  97. help to select and correct 400w TDA2030A OR 200WTDA2030
  98. Cambridge Audio A500 & P500
  99. softstart recommendation for 2kva R-core and 1,00,000uf per rail x 2 caps
  100. Alternative buffer topologies
  101. 400 Watt in 8ohms/ 800 watt in 4 Ohms
  102. Until I can afford a digital unit Old Technics??
  103. Yamaha AX 500u schematic, integrated amp
  104. Power rating for short circuit protection in linear voltage regulator
  105. Leach Amp Tests (weird noise)
  106. Amplifier with a sound. How to build for second harmonic.
  107. TCAAS
  108. Pre amp recommendation
  109. what is cy7c6801a pc 645041 and what does it do?
  110. Raising bias on Marantz SR4200 AV Receiver
  111. Will this schematic work ? (2SK2221/2SJ352 only)
  112. Legacy Whisper vs Klipsh Cornwall loading Mark Levinson ML-2
  113. what happens if transistors are not matched? especially output stage..
  114. SOME CLASS H, AB ,PROTECT POWER AMPS
  115. Please help me understand the voltage regulator with external bypass BJT?
  116. Lead size of TO-3 package and where to get insulated jumper wires?
  117. Cross reference 2SD234
  118. about maintenance of amplifiers
  119. Help with this preamp
  120. Input line 120hz on speaker output in class A?
  121. Need help
  122. How to make LME49810 amp 2 ohm stable?
  123. Make Hifi with 3 Triple Sziklai transistors in Simple Class A
  124. 3000w power amp sadaru
  125. Input capacitor 2.2uf Polystyrene or Mundorf Silver/oil?
  126. Negative side Mosfet heating up with mild hissing
  127. Should a 250VA toriodal be blowing a 1A fuse?
  128. The questions about Hi-fi audio for home use.
  129. Denon Output Transistors.
  130. Sansui 9090 help
  131. Diamonds and Pearls
  132. Seeking DC Enlightenment
  133. FETZILLA - The Builders Place
  134. N-Channel JFET sub
  135. Simple 85W amplifier
  136. NAD T753 receiver: No sound
  137. Power Supply and Other Re-capping
  138. 100watt mono amp find???
  139. help! noob recapping an amp... really stuck.
  140. Powerbass atm-440.2
  141. uPC1237 too slow
  142. What type of capacitors are these?
  143. +/- 36 Volt Voltageamp with TMC error correction
  144. Sound of Op Amps...
  145. THRESHOLD S-300 UPGRADE
  146. Alternative method load for power testing amps?
  147. THRESHOLD S-300 UPGRADE
  148. alternativ symmetric amp
  149. Has anyone ever had experience with MUSE opamps?
  150. Baking a pcb for removing moisture
  151. Nad 3020e lost some of its volume , distortion
  152. Hafler P3000
  153. Krell KSA-150 Power board Reassamble HELP Please
  154. accurate Output Stage
  155. N-Channel JFET
  156. Musical Fidelity A100 resistors
  157. Help me from JFET
  158. Parts for NAK CA5
  159. Help for Rega biasing value
  160. Replacement transistors, NAIM NAP90
  161. DC Detection Question
  162. Leach driven by DRV134
  163. TO-3 Removal
  164. HOW CAN I CREATE 10% THD ??
  165. Another ESP P3A PCB design thread
  166. joule thief (draw more power from a power supply?)
  167. Found: SAE Series Two Power Switch
  168. Restart search for PS Audio Elite schematic.
  169. NAD 114 switch-on.
  170. Cadsoft eagle package LSK389
  171. New modern amp or classic second hand?
  172. Capicator Whine? PPI PC2350
  173. How much big a heatsink has to be?
  174. NAD C326BEE upgrades
  175. Cyrus 2 - removing cover
  176. Idling setting for Yamaha MX-2000 ?
  177. Philips 391 Intergrated Amplifier guts?
  178. 500w mosfet power amp sadaru
  179. Adjusting DC offset issues
  180. New Lineup IDEA - Power Follower/Output stage
  181. PS Audio 100c thump
  182. Just scored a Sanyo DC-8500K, Can its preamp board drive a Matsushita EPC-451C?
  183. Krell KSA 250 - The Mother Clone !!!
  184. AV400 Bias adjust and Transistor burning accidents
  185. how to match the Transistors like toshiba 5200 1943
  186. Power amp right channel running hot.
  187. Class G plate amp problem
  188. ARCAM D290 DEAD - PLEASE HELP
  189. I am having fun..the one is saying bad things is a friend
  190. Increasing the output power of a car amplifier.
  191. PCB for TDA7295
  192. VSP Labs TransMOS
  193. CS800X output amp cicuitry
  194. Heatsink gradients and Vbe
  195. Are these ok for usage in a vas / current source ?
  196. help with Luxman l-200
  197. why do old amps sound is liked by many serious audiophiles even though...
  198. Best suited power mosfets for amplifiers
  199. why do old amps has sleeve on the resistors pins...
  200. A872e Replacement
  201. See any issues with this class A current clip detect circuit?
  202. Effects of emitter resistors in a hifi amp?
  203. Sansui 9090 bias
  204. Replacement For MPSU10/60
  205. Attempting to restore a Pioneer 202 spring reverb
  206. Quad 405 clone parts
  207. Parts quality does matter, yes, but..
  208. Sources for TO220 heatsinks?
  209. line level stereo volume control using one pot?
  210. REPLACE TIP36 + 2N3055 IN TDA2030A
  211. Amp is making loud "boom pop" noises every second or so..
  212. R24 incomplete
  213. Krell KSA-250 low frequency oscillation
  214. Newly built ESP P03 (not 3A) - rail to rail oscillation - suggestions?
  215. Musical Fidelity 3A-X preamplifier
  216. Denon DR-M07 Cassette Deck
  217. PCB manufacturer EU - thick copper ...
  218. Liquid discharge from capacitors?
  219. Adcom GFA-565 with very high DC offset
  220. Adcom GFA-2535 Bias Adjustment
  221. Balance control for MF pre-amp
  222. DAC what for ?
  223. An active Current Dump amplifier design idea.
  224. Mechanical Transformer Hum
  225. Va rating reloaded
  226. Threshold s/200 question
  227. thanks for help
  228. dmm hfe
  229. Parasound HCA-800 II - How to Bias?
  230. Rega channel selection broken!!
  231. Amp project to use 2 XFOS I have lying around
  232. Any hifi but simple line level stereo to mono converter?
  233. quad 303 burnt component
  234. Any Stockholm Members
  235. TA-N7B new circuit operation brochure
  236. Best location for amplifier's output inductor?
  237. NAD 3120 parts
  238. Maximum output power/current from a transformer?
  239. Sansui 9090 IC equivalent circuit
  240. Samson Servo 260
  241. Conn Organ Amp Question
  242. doubt about amplifiers and active crossover
  243. PV 1.3K won't drive 2 ohms with DDT on
  244. combining amplifiers help!
  245. High Brightness LED Zener Like Curve
  246. brand capacitors need for recap
  247. Dual CV-441 RC darlingtons modifications
  248. help with adcom 555 amp left channel death
  249. Class i
  250. Schematic or Parasound Zamp ver 1

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