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  1. Are ground planes in audio pcbs legit?
  2. Radio
  3. Suggestions for output pairs
  4. First amp I ever built - An excellent simple class A amp for beginners
  5. Does anyone know.......
  6. bow technology is still live?
  7. Esoteric Asr schematic
  8. I need help getting started with an Onkyo M-501
  9. High Power, High Fidelity Lateral MOSFET Power Amplifier
  10. Cheaper way to test power supply stability?
  11. Battery Type for Portable Speakers
  12. high rail voltage chip amps?
  13. class A output stage without feedback for a DAC?
  14. Need help hooking up Ashly P70-400
  15. Surprising polycarbonate caps
  16. Cordell OF THE Amplifier
  17. help changing the crossover setting of my class A/B subwoofer plate amp
  18. catfet amplifier
  19. Did one sell Krell amp after building LM4702?
  20. is current in speaker load to be anyway closer to psu current ratings?
  21. Krell KRC-2 service-manual?
  22. Sound project Module
  23. Rega Brio-R design
  24. Scratchy sound coming from speaker
  25. Dx Zim (Zimmer) SMPS will be developed to release
  26. Grounding scheme and loop breaker, need advice..
  27. Sony TA-FE230 Left Channel Weak
  28. I need pcb for this scheme
  29. How to repair and diagnose amp problem?
  30. WAV File Reproduction Sound Project
  31. the Inverting stage
  32. What about car amps?
  33. Audiolab 8000p stopped working.
  34. Ampeg svt 3 pro Power Amp
  35. McIntosh amp smoking
  36. 2 x 15W rms Audio Amp for small speakers
  37. Mickey Mouse PA Amplifiers and Mixers (two brands MM + PAiCE) - Schematics wanted
  38. channel sound loss scott 350R
  39. Need information for MM AP360 Amplifier
  40. Help me please with NAD S300
  41. Arcam AVR-100
  42. Sansui AU-217 issues
  43. Marantz PM44SE power/relay? issues
  44. Rotel RC-1070 Preamp PSU Repair
  45. home wiring is old knob and tube-no ground plug
  46. Should I let unused amps sit or power them up and use them on occasion.
  47. i need LUXMAN L-570 service manual
  48. Luxman 115 preamped into Concept 16.5?
  49. NAD T752 Repair Advice
  50. Goldmund schematics
  51. The Spanish Trio 5700 story
  52. Newbie trying to learn about my GFA-535 internals
  53. Help: A question regarding PCB to PTP?
  54. Converting single-ended signal to balanced causes background noises
  55. LME49830 question
  56. It helps to select best class power amplifier (AB- 40-50 watts)
  57. Transformer for Nytech CA252 Amplifier
  58. Dynaco st120
  59. How good / bad is this amp made?
  60. Efficient Subwoofer Amplifier
  61. Need Help With BUZ901/906 MOSFET Amplifier
  62. Current conveyor
  63. Question on Transistor amplification
  64. Output subs for 2sa1301 & 2sc3280
  65. Technics SA-R 410
  66. Another "ancient" amp
  67. Burnt out transistors - replace with same or something better? Rotel RB-991
  68. Help with Adcom GFA555-II
  69. Sansui ba-5000 Large Cap Removal Help Needed
  70. help to select and correct 400w TDA2030A OR 200WTDA2030
  71. Cambridge Audio A500 & P500
  72. softstart recommendation for 2kva R-core and 1,00,000uf per rail x 2 caps
  73. Alternative buffer topologies
  74. 400 Watt in 8ohms/ 800 watt in 4 Ohms
  75. Until I can afford a digital unit Old Technics??
  76. Yamaha AX 500u schematic, integrated amp
  77. Power rating for short circuit protection in linear voltage regulator
  78. Leach Amp Tests (weird noise)
  79. Amplifier with a sound. How to build for second harmonic.
  80. TCAAS
  81. Pre amp recommendation
  82. what is cy7c6801a pc 645041 and what does it do?
  83. Raising bias on Marantz SR4200 AV Receiver
  84. Will this schematic work ? (2SK2221/2SJ352 only)
  85. Legacy Whisper vs Klipsh Cornwall loading Mark Levinson ML-2
  86. what happens if transistors are not matched? especially output stage..
  87. SOME CLASS H, AB ,PROTECT POWER AMPS
  88. Please help me understand the voltage regulator with external bypass BJT?
  89. Lead size of TO-3 package and where to get insulated jumper wires?
  90. Cross reference 2SD234
  91. about maintenance of amplifiers
  92. Help with this preamp
  93. Input line 120hz on speaker output in class A?
  94. Need help
  95. How to make LME49810 amp 2 ohm stable?
  96. Make Hifi with 3 Triple Sziklai transistors in Simple Class A
  97. 3000w power amp sadaru
  98. Input capacitor 2.2uf Polystyrene or Mundorf Silver/oil?
  99. Negative side Mosfet heating up with mild hissing
  100. Should a 250VA toriodal be blowing a 1A fuse?
  101. The questions about Hi-fi audio for home use.
  102. Denon Output Transistors.
  103. Sansui 9090 help
  104. Diamonds and Pearls
  105. Seeking DC Enlightenment
  106. FETZILLA - The Builders Place
  107. N-Channel JFET sub
  108. Simple 85W amplifier
  109. NAD T753 receiver: No sound
  110. Power Supply and Other Re-capping
  111. 100watt mono amp find???
  112. help! noob recapping an amp... really stuck.
  113. Powerbass atm-440.2
  114. uPC1237 too slow
  115. What type of capacitors are these?
  116. +/- 36 Volt Voltageamp with TMC error correction
  117. Sound of Op Amps...
  118. THRESHOLD S-300 UPGRADE
  119. Alternative method load for power testing amps?
  120. THRESHOLD S-300 UPGRADE
  121. alternativ symmetric amp
  122. Has anyone ever had experience with MUSE opamps?
  123. Baking a pcb for removing moisture
  124. Nad 3020e lost some of its volume , distortion
  125. Hafler P3000
  126. Krell KSA-150 Power board Reassamble HELP Please
  127. accurate Output Stage
  128. N-Channel JFET
  129. Musical Fidelity A100 resistors
  130. Help me from JFET
  131. Parts for NAK CA5
  132. Help for Rega biasing value
  133. Replacement transistors, NAIM NAP90
  134. DC Detection Question
  135. Leach driven by DRV134
  136. TO-3 Removal
  137. HOW CAN I CREATE 10% THD ??
  138. Another ESP P3A PCB design thread
  139. joule thief (draw more power from a power supply?)
  140. Found: SAE Series Two Power Switch
  141. Restart search for PS Audio Elite schematic.
  142. NAD 114 switch-on.
  143. Cadsoft eagle package LSK389
  144. New modern amp or classic second hand?
  145. Capicator Whine? PPI PC2350
  146. How much big a heatsink has to be?
  147. NAD C326BEE upgrades
  148. Cyrus 2 - removing cover
  149. Idling setting for Yamaha MX-2000 ?
  150. Philips 391 Intergrated Amplifier guts?
  151. 500w mosfet power amp sadaru
  152. Adjusting DC offset issues
  153. New Lineup IDEA - Power Follower/Output stage
  154. PS Audio 100c thump
  155. Just scored a Sanyo DC-8500K, Can its preamp board drive a Matsushita EPC-451C?
  156. Krell KSA 250 - The Mother Clone !!!
  157. AV400 Bias adjust and Transistor burning accidents
  158. how to match the Transistors like toshiba 5200 1943
  159. Power amp right channel running hot.
  160. Class G plate amp problem
  161. ARCAM D290 DEAD - PLEASE HELP
  162. I am having fun..the one is saying bad things is a friend
  163. Increasing the output power of a car amplifier.
  164. PCB for TDA7295
  165. VSP Labs TransMOS
  166. CS800X output amp cicuitry
  167. Heatsink gradients and Vbe
  168. Are these ok for usage in a vas / current source ?
  169. help with Luxman l-200
  170. why do old amps sound is liked by many serious audiophiles even though...
  171. Best suited power mosfets for amplifiers
  172. why do old amps has sleeve on the resistors pins...
  173. A872e Replacement
  174. See any issues with this class A current clip detect circuit?
  175. Effects of emitter resistors in a hifi amp?
  176. Sansui 9090 bias
  177. Replacement For MPSU10/60
  178. Attempting to restore a Pioneer 202 spring reverb
  179. Quad 405 clone parts
  180. Parts quality does matter, yes, but..
  181. Sources for TO220 heatsinks?
  182. line level stereo volume control using one pot?
  183. REPLACE TIP36 + 2N3055 IN TDA2030A
  184. Amp is making loud "boom pop" noises every second or so..
  185. R24 incomplete
  186. Krell KSA-250 low frequency oscillation
  187. Newly built ESP P03 (not 3A) - rail to rail oscillation - suggestions?
  188. Musical Fidelity 3A-X preamplifier
  189. Denon DR-M07 Cassette Deck
  190. PCB manufacturer EU - thick copper ...
  191. Liquid discharge from capacitors?
  192. Adcom GFA-565 with very high DC offset
  193. Adcom GFA-2535 Bias Adjustment
  194. Balance control for MF pre-amp
  195. DAC what for ?
  196. An active Current Dump amplifier design idea.
  197. Mechanical Transformer Hum
  198. Va rating reloaded
  199. Threshold s/200 question
  200. thanks for help
  201. dmm hfe
  202. Parasound HCA-800 II - How to Bias?
  203. Rega channel selection broken!!
  204. Amp project to use 2 XFOS I have lying around
  205. Any hifi but simple line level stereo to mono converter?
  206. quad 303 burnt component
  207. Any Stockholm Members
  208. TA-N7B new circuit operation brochure
  209. Best location for amplifier's output inductor?
  210. NAD 3120 parts
  211. Maximum output power/current from a transformer?
  212. Sansui 9090 IC equivalent circuit
  213. Samson Servo 260
  214. Conn Organ Amp Question
  215. doubt about amplifiers and active crossover
  216. PV 1.3K won't drive 2 ohms with DDT on
  217. combining amplifiers help!
  218. High Brightness LED Zener Like Curve
  219. brand capacitors need for recap
  220. Dual CV-441 RC darlingtons modifications
  221. help with adcom 555 amp left channel death
  222. Class i
  223. Schematic or Parasound Zamp ver 1
  224. Emitter resistors, single piece?
  225. Crown Amplifier
  226. Apex HV23
  227. Input coupling capacitor sizing
  228. MTE AUDIO AMP
  229. Another NAD 3020e repair thread
  230. Schematic for sound craft spirit mate 350
  231. audiolab 8000a transformer blown!
  232. TEAC Distinction Series AI-2000 Integrated
  233. Sony amp - loud static on Rch
  234. Audiolab 8000A Class A?
  235. Pioneer SA 9500 mk 1
  236. Clip Light
  237. Prototype power amplifier
  238. Please help me choose my next amplifier build!
  239. Adcom GFA555-II help needed...
  240. Help on restoring amplifier
  241. Good Article on Vintage vs New Hi Fi Equipment
  242. how do I make a push-pull amplifier?
  243. Voltage regulator oscillation at 850khz at high current
  244. Kind of embarasing but how do I use this toroidal transformer?
  245. Little GEM
  246. (Creating) TDA7375 based amp
  247. TDA7375 based amplifier (creation)
  248. Kenwood KM X-1000 service manual
  249. Krell KSA 100 mk2 recap- advice required
  250. Proven class AB designs for ~100 watts of output

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