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  1. Decoupling for battery based opamp circuits
  2. about schemes H/K citation 24 and Braun Atelier PA 4 (/ 2)
  3. Simple Feed Forward for Power Amp
  4. Emotive mini-X a-100 vs Dayton Audio APA150
  5. Newbie recap project seeks advice..
  6. Adcom GFA-5800 amplifier cooling fans
  7. Hafler 9505 switch needed
  8. Amplificador SUBZERO
  9. Son of Ampzilla rebuilt
  10. upgrading tivoli model one
  11. BIG transistors
  12. Another 80's british amp thread
  13. Yamaha M50 fixing or rebuild
  14. 250-400watt audio amplifier
  15. Parasound A31
  16. Question reg. Sansui Au-D5 mod
  17. Simple Universal Speaker Delay Using A Triac
  18. yamaha emx640 darlington amp repair
  19. The best Circuit of MJ11032,MJ11033 searching!
  20. Pioneer VSX-D557 Overload problem
  21. Soundstandard ES200 schematics anyone ??
  22. Playmaster Series 200 Circuit
  23. DC offset adj in JE990
  24. Korting Transmare A500 - vintage German amp, with issues!
  25. Tekko draws something from his head
  26. Vintage Toshiba 330 power amp problem, possible repair?
  27. Complementary Power MOSFETs
  28. Old class A design with 2SK146 dual JFET
  29. Balanced NoGNFB With Cross-Linked Input Stage
  30. MC2505 problem
  31. Bridging two 300W in 8 ohm amplifier to drive 1200W in 8 ohm
  32. Can a very simple class A amp produce great sound?
  33. you gotta be kidding !
  34. How to find the transfer function of this volume control?
  35. NAD C370 - red light
  36. Marantz SR1040 no output
  37. Mosfet question ( help needed )
  38. Trouble with Denon PMA-520 bias adjustment
  39. What is the importance of IQ in a common emitter stage?
  40. what is the role of the 68pf and 2200pf cap in Hiraga Super class A 30W
  41. Zero FeedBack Amp
  42. Motorola Solid State
  43. Is it worth modding a Marantz PM66SE
  44. Cyrus 3 2nd stage fault.. HELP!
  45. Carver CM-1090 pre/pro help?
  46. Krell KSA 50 clone power supply.
  47. Pioneer receiver mods
  48. Are ground planes in audio pcbs legit?
  49. Radio
  50. Suggestions for output pairs
  51. First amp I ever built - An excellent simple class A amp for beginners
  52. Does anyone know.......
  53. bow technology is still live?
  54. Esoteric Asr schematic
  55. I need help getting started with an Onkyo M-501
  56. High Power, High Fidelity Lateral MOSFET Power Amplifier
  57. Cheaper way to test power supply stability?
  58. Battery Type for Portable Speakers
  59. high rail voltage chip amps?
  60. class A output stage without feedback for a DAC?
  61. Need help hooking up Ashly P70-400
  62. Surprising polycarbonate caps
  63. Cordell OF THE Amplifier
  64. help changing the crossover setting of my class A/B subwoofer plate amp
  65. catfet amplifier
  66. Did one sell Krell amp after building LM4702?
  67. is current in speaker load to be anyway closer to psu current ratings?
  68. Krell KRC-2 service-manual?
  69. Sound project Module
  70. Rega Brio-R design
  71. Scratchy sound coming from speaker
  72. Dx Zim (Zimmer) SMPS will be developed to release
  73. Grounding scheme and loop breaker, need advice..
  74. Sony TA-FE230 Left Channel Weak
  75. I need pcb for this scheme
  76. How to repair and diagnose amp problem?
  77. WAV File Reproduction Sound Project
  78. the Inverting stage
  79. What about car amps?
  80. Audiolab 8000p stopped working.
  81. Ampeg svt 3 pro Power Amp
  82. McIntosh amp smoking
  83. 2 x 15W rms Audio Amp for small speakers
  84. Mickey Mouse PA Amplifiers and Mixers (two brands MM + PAiCE) - Schematics wanted
  85. channel sound loss scott 350R
  86. Need information for MM AP360 Amplifier
  87. Help me please with NAD S300
  88. Arcam AVR-100
  89. Sansui AU-217 issues
  90. Marantz PM44SE power/relay? issues
  91. Rotel RC-1070 Preamp PSU Repair
  92. home wiring is old knob and tube-no ground plug
  93. Should I let unused amps sit or power them up and use them on occasion.
  94. i need LUXMAN L-570 service manual
  95. Luxman 115 preamped into Concept 16.5?
  96. NAD T752 Repair Advice
  97. Goldmund schematics
  98. The Spanish Trio 5700 story
  99. Newbie trying to learn about my GFA-535 internals
  100. Help: A question regarding PCB to PTP?
  101. Converting single-ended signal to balanced causes background noises
  102. LME49830 question
  103. It helps to select best class power amplifier (AB- 40-50 watts)
  104. Transformer for Nytech CA252 Amplifier
  105. Dynaco st120
  106. How good / bad is this amp made?
  107. Efficient Subwoofer Amplifier
  108. Need Help With BUZ901/906 MOSFET Amplifier
  109. Current conveyor
  110. Question on Transistor amplification
  111. Output subs for 2sa1301 & 2sc3280
  112. Technics SA-R 410
  113. Another "ancient" amp
  114. Burnt out transistors - replace with same or something better? Rotel RB-991
  115. Help with Adcom GFA555-II
  116. Sansui ba-5000 Large Cap Removal Help Needed
  117. help to select and correct 400w TDA2030A OR 200WTDA2030
  118. Cambridge Audio A500 & P500
  119. softstart recommendation for 2kva R-core and 1,00,000uf per rail x 2 caps
  120. Alternative buffer topologies
  121. 400 Watt in 8ohms/ 800 watt in 4 Ohms
  122. Until I can afford a digital unit Old Technics??
  123. Yamaha AX 500u schematic, integrated amp
  124. Power rating for short circuit protection in linear voltage regulator
  125. Leach Amp Tests (weird noise)
  126. Amplifier with a sound. How to build for second harmonic.
  127. TCAAS
  128. Pre amp recommendation
  129. what is cy7c6801a pc 645041 and what does it do?
  130. Raising bias on Marantz SR4200 AV Receiver
  131. Will this schematic work ? (2SK2221/2SJ352 only)
  132. Legacy Whisper vs Klipsh Cornwall loading Mark Levinson ML-2
  133. what happens if transistors are not matched? especially output stage..
  134. SOME CLASS H, AB ,PROTECT POWER AMPS
  135. Please help me understand the voltage regulator with external bypass BJT?
  136. Lead size of TO-3 package and where to get insulated jumper wires?
  137. Cross reference 2SD234
  138. about maintenance of amplifiers
  139. Help with this preamp
  140. Input line 120hz on speaker output in class A?
  141. Need help
  142. How to make LME49810 amp 2 ohm stable?
  143. Make Hifi with 3 Triple Sziklai transistors in Simple Class A
  144. 3000w power amp sadaru
  145. Input capacitor 2.2uf Polystyrene or Mundorf Silver/oil?
  146. Negative side Mosfet heating up with mild hissing
  147. Should a 250VA toriodal be blowing a 1A fuse?
  148. The questions about Hi-fi audio for home use.
  149. Denon Output Transistors.
  150. Sansui 9090 help
  151. Diamonds and Pearls
  152. Seeking DC Enlightenment
  153. FETZILLA - The Builders Place
  154. N-Channel JFET sub
  155. Simple 85W amplifier
  156. NAD T753 receiver: No sound
  157. Power Supply and Other Re-capping
  158. Power Supply and Other Re-capping
  159. 100watt mono amp find???
  160. help! noob recapping an amp... really stuck.
  161. Powerbass atm-440.2
  162. uPC1237 too slow
  163. What type of capacitors are these?
  164. +/- 36 Volt Voltageamp with TMC error correction
  165. Sound of Op Amps...
  166. THRESHOLD S-300 UPGRADE
  167. Alternative method load for power testing amps?
  168. THRESHOLD S-300 UPGRADE
  169. alternativ symmetric amp
  170. Has anyone ever had experience with MUSE opamps?
  171. Baking a pcb for removing moisture
  172. Nad 3020e lost some of its volume , distortion
  173. Hafler P3000
  174. Krell KSA-150 Power board Reassamble HELP Please
  175. accurate Output Stage
  176. N-Channel JFET
  177. Musical Fidelity A100 resistors
  178. Help me from JFET
  179. Parts for NAK CA5
  180. Help for Rega biasing value
  181. Replacement transistors, NAIM NAP90
  182. DC Detection Question
  183. Leach driven by DRV134
  184. TO-3 Removal
  185. HOW CAN I CREATE 10% THD ??
  186. Another ESP P3A PCB design thread
  187. joule thief (draw more power from a power supply?)
  188. Found: SAE Series Two Power Switch
  189. Restart search for PS Audio Elite schematic.
  190. NAD 114 switch-on.
  191. Cadsoft eagle package LSK389
  192. gallien-krueger MB150s 120v to 230v conversion?
  193. New modern amp or classic second hand?
  194. Capicator Whine? PPI PC2350
  195. How much big a heatsink has to be?
  196. NAD C326BEE upgrades
  197. Cyrus 2 - removing cover
  198. Idling setting for Yamaha MX-2000 ?
  199. Philips 391 Intergrated Amplifier guts?
  200. 500w mosfet power amp sadaru
  201. Adjusting DC offset issues
  202. New Lineup IDEA - Power Follower/Output stage
  203. PS Audio 100c thump
  204. Just scored a Sanyo DC-8500K, Can its preamp board drive a Matsushita EPC-451C?
  205. Krell KSA 250 - The Mother Clone !!!
  206. AV400 Bias adjust and Transistor burning accidents
  207. how to match the Transistors like toshiba 5200 1943
  208. Power amp right channel running hot.
  209. Class G plate amp problem
  210. ARCAM D290 DEAD - PLEASE HELP
  211. I am having fun..the one is saying bad things is a friend
  212. Increasing the output power of a car amplifier.
  213. PCB for TDA7295
  214. VSP Labs TransMOS
  215. CS800X output amp cicuitry
  216. Heatsink gradients and Vbe
  217. Are these ok for usage in a vas / current source ?
  218. help with Luxman l-200
  219. why do old amps sound is liked by many serious audiophiles even though...
  220. Best suited power mosfets for amplifiers
  221. why do old amps has sleeve on the resistors pins...
  222. A872e Replacement
  223. See any issues with this class A current clip detect circuit?
  224. Effects of emitter resistors in a hifi amp?
  225. Sansui 9090 bias
  226. Replacement For MPSU10/60
  227. Attempting to restore a Pioneer 202 spring reverb
  228. Quad 405 clone parts
  229. Parts quality does matter, yes, but..
  230. Sources for TO220 heatsinks?
  231. line level stereo volume control using one pot?
  232. REPLACE TIP36 + 2N3055 IN TDA2030A
  233. Amp is making loud "boom pop" noises every second or so..
  234. R24 incomplete
  235. Krell KSA-250 low frequency oscillation
  236. Newly built ESP P03 (not 3A) - rail to rail oscillation - suggestions?
  237. Musical Fidelity 3A-X preamplifier
  238. Denon DR-M07 Cassette Deck
  239. PCB manufacturer EU - thick copper ...
  240. Liquid discharge from capacitors?
  241. Adcom GFA-565 with very high DC offset
  242. Adcom GFA-2535 Bias Adjustment
  243. Balance control for MF pre-amp
  244. DAC what for ?
  245. An active Current Dump amplifier design idea.
  246. Mechanical Transformer Hum
  247. Va rating reloaded
  248. Threshold s/200 question
  249. thanks for help
  250. dmm hfe

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