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  1. Old Transistors
  2. board suggestion for given PSU (+/-45v or +/- 90v)
  3. Help Definitive Technology supercube 2
  4. help repair amplifier
  5. Adding DC Protection to a CA P500 Power-Amp
  6. problem with my loudspeaker protection circuit
  7. Class A amp based on STK 3102-III
  8. Selling transistors 2SK1530-2sj201
  9. Which amp ??
  10. Upgrading output devices and prefinals on Dyna PM1
  11. Yamaha CR2020
  12. Bias speader for single ended front end
  13. DIY newb bias question (100w guitar/bass amp)
  14. Mark Levinson JC2 and ML1 modules
  15. A different buffer
  16. Active filter - Loudness
  17. High quality audio amplifier to 100W
  18. Project: Upgrading Mitsubishi DA-A10 to DA-A15
  19. Please help... Yamaha AV Receiver RX-V550 not turning
  20. sansui a700 service manual wanted
  21. Dyson 'ring' fans; how do they work?
  22. Adding Gain Control to a Power-Amp
  23. Picking replacement output devices for Yamaha M-45
  24. Erm, what is mine?
  25. A little help please
  26. Nad 3130 Toast
  27. Degeneration resistors in long tailed pair
  28. Adcom 535 popping
  29. Amp distortion
  30. IRFP450 for output stage
  31. Fun Day
  32. Help needed for constant current source design.
  33. looking for a bridging adapter for power amplifier
  34. LF Ebay Speaker Protection Circuit
  35. Transistor audio ckt & service manual
  36. What Else Can Be Upgraded?
  37. Why bd139 Vbe multiplier?
  38. Aesthetix Atlas - Stereo Power Amplifier - who have heard ?
  39. Direct-coupled amplifier circuit
  40. Popping Crate GX-130C
  41. CPU Coolers on Ebay: junk or not?
  42. DIY STK-0050 module.
  43. Technics SU-Z25
  44. Sumo andromeda series 3 with bad channel
  45. DIY AMP For Auratone
  46. QED Vintage Amp ...
  47. BEST HIGH END POWER SUPPLY OF 35VDC
  48. Plate amp mod
  49. Impedance
  50. Which filter topology do you prefer?
  51. Transistor help for Sony STR-6120
  52. PREAMPLIFIER USHER P307 A
  53. burning hot amp!
  54. TO FUSE OR NOT TO FUSE?
  55. Advice on cheap amplifier repair
  56. My LME49600/49610 PCB design
  57. Low volume issue with Power Amp
  58. Ebay L150W FET Power Amplifier Board IRFP240*6
  59. Best 680uf / 250V capacitor
  60. Can anyone identify this IC package?
  61. Kenwood KA-907
  62. Looking for thread with the attached image
  63. help with warm up noise?
  64. Onkyo TX-SR607 repair
  65. PerfectA Mosfet Power Amp
  66. Fitting Big Capacitors in a QUAD 405
  67. Scrap amp
  68. Onkyo A-RV401
  69. Datasheets for Technics amplifier modules?
  70. Replacing old tube preamp on 1962 Magnavox
  71. High performance feedback for "Lowtech" amplifiers
  72. layout question
  73. HCA 1206
  74. Active highpass filter
  75. Martin Logan Dynamo 700 Plate Amp Issues
  76. Insane Hybrid Headphone Amp (IHHA)
  77. LME49830 PCB...
  78. Cambridge A500 help needed
  79. puzzled
  80. can I use a y-cable
  81. Help needed- slight noise after mod.
  82. BF871 and bf872 equivalent?
  83. Amplifier Issues....
  84. Schematic for Heathkit AR 1214
  85. Sansui G5700 Heat Problem
  86. audiolab 8000A ?
  87. i need service manual for soundcraft sa-1000
  88. Telos 390 clone PCB
  89. Yamaha A-720 amp and the loudness control
  90. Leak Delta 30 amp HELP!!
  91. 637 Amplifiers
  92. reducing thd
  93. Can anyone help with an old ETI magazine article ??
  94. One channel silent - until you increase the volume slightly - on two different amps!
  95. Single BJT amplifier ?
  96. A and T labs K6 amplifier
  97. EP4000 fan mod part number
  98. First Amp, where to start?
  99. adding ground wire to reduce periodic huming noise?
  100. Headphones as an ultimate reference
  101. Sony ta-fb940r humming after transformer replacement 5 connections on sec output ??
  102. help
  103. a complete amplifier
  104. Hartke 3500 Mosfet TA
  105. attenuator dB to reistance calculation
  106. Conn Organ Post Amp to Power Amp Question
  107. Maplin 1kw mosfet amp build thread
  108. Upgrade of a Technics A-800C MK2
  109. Questions about 400W mono amplfier
  110. this circuit will work?
  111. Current mirror using N-MOS 75N75
  112. DIY Project - Nytech CPA602 today ...
  113. Who has listened to the B&K 200.2 amp?
  114. Bryston 3BST operating conditions
  115. old amp need some help
  116. P3A problem - DC at output
  117. parasound hca 1000 blows fuses
  118. carver m1.5t ground hum
  119. High Power Zenquito PCB group buy?
  120. Online shop
  121. NJM4558 and clones - what is minimum supply voltage ?
  122. QUAD 405 main board fuse blow
  123. adjusting VBe
  124. Vertical MOSFETs for a PA amplifier OP
  125. Jvc RX709V Clicking
  126. Dx Super A - a module to be coupled to Dx amplifiers
  127. NAD C370 distorted sound on both channels
  128. Hafler 9505- Bias adjustment
  129. Lets talk about transconductance amplifiers
  130. Class A amp with fully symmetric design using only NPN output transistor
  131. JVC A-K100 Schematic
  132. Another Adcom Amp Question
  133. help with EV 7600 power amp
  134. Do you like listening to distortion?
  135. cyrus 2 repaint colour idea ??
  136. Denon AVR upgrades
  137. Powering an NCC200 frontend...
  138. Home made Cyrus PSX
  139. QUAD 606 MKI
  140. NJL4302/4281 Discontinued.
  141. Where can one buy the Leach Amplifier PCBs ?
  142. cyrus 3 amplifier cutting out
  143. Dx Turbo, the ultimate amplifier to be released before july 2013
  144. Dac 12v for car
  145. Proceed Amp troubleshooting / refurbish
  146. PTEC VI Power Amplifier
  147. troubleshooting old pionner GM-H100 :confused:
  148. I have a question with this amp
  149. Suggestions for mono block amplifier?
  150. HOW TO MAKE A PROPER AMPLIFIER
  151. PA Amplifier comparision
  152. All P-channel Regulator For TSSA Split Supply?
  153. Sherwood RV-8070R
  154. Power Amplifier
  155. Tekko dreams up another poweramp
  156. Help with a 6 channel board
  157. Recommended Speaker Protect Kits ???
  158. how to remove stains in your AMP
  159. DxXs - I am having ideas, things to play...the brain last neuronium is working hard
  160. QUAD 405 power off noise
  161. BC142/143 transistor replacement
  162. Problem with Biema FW900
  163. Tweeter Class A Amp
  164. DC offset
  165. Is 200W possible with simple topology ?
  166. Bypassing tone switch on Rotel RA-931 and RA-930AX
  167. Blown power filter cap
  168. Nytech ca252 help request!
  169. Monrio Asty Dual Mono Mosfet replacements
  170. Some more Wireless World articles archived
  171. Sanken 2SC2922/2SA1216
  172. LOUDSPEAKER PROTECTION
  173. Hafler P3000 -67V on output
  174. Opinions on a Concept
  175. Crowned
  176. Adcom GFA-555 Cap Question: 50V vs 63V
  177. Mark Levinson 333 output transistors
  178. ESP P27 PCB - Needs checking
  179. bridging amplifier with input transformers
  180. P3A-MORE UPGRADES
  181. only four stage AMP
  182. Which transistor is good one
  183. OPA2132P vs OPA2132PA WHAT'S THE DIFFERENCE?
  184. Power Supply ceramic caps burnt
  185. Crate PA head Oscillation at low volume
  186. Leak 2200 maintenance
  187. Biasing Hartke HA 7000
  188. Need help with IC connection
  189. Accidental Death of a DoZ...
  190. Elements between PCB-GND and Mains Earth in SolidState Power Amps - How to Calculate?
  191. power section pops like frying bacon
  192. Any idea at all how the AD8656 OPAMP compares to the AD8620?
  193. Repaired and tested LabGruppen 1000
  194. SONY Is it really true?
  195. Amplifier Simplicity and technology...
  196. Inverting stage not working...help!
  197. Luxman L100 repair
  198. DIY upgrading Meitner MTR-101
  199. should I buy this amp?
  200. 2 ohm with 100W class AB or D amplifier
  201. Ovation e-Amp is Completed
  202. metal film resistors
  203. Using power BJT's beyond their rated (but below their measured) Vceo?
  204. QED A 240 SA Restoration Project
  205. NAD 3240 PE Stereo Amplifier Blows Fuses Immediately
  206. Second attempt at Building my own amp from scratch
  207. Dx Disintegrated Circuit - Dx Dc
  208. Cairn Aria HE
  209. About to Replace Filter Capacitors with Different Type- Help Needed!
  210. What happens with bipolar Rbb as a function of collector current?
  211. would need more data on this amplifier
  212. New to DIY audio, and need some help
  213. Sansui AU-X517R repair and restoration
  214. LSK389 best working points?
  215. Big difference in amps - tag/rotel has me confused
  216. NEW MODEL > LG - ALLIEN
  217. Logitech Amp Reuse
  218. Panasonic FC caps for Class A amp power supply??
  219. DENON POA-6600
  220. Equivalent transistors
  221. NAD 906 silent
  222. Major modification design help needed
  223. HIFI 700W Subwoofer Mono Amplifier Board By 10 Pairs 1943/5200 Amp Board For Subwoofe
  224. Balanced to unbalanced schematic, is this one good?
  225. Altec 9440A how does it sound ?
  226. KSA-50S no sound problem- please help
  227. WSF and DMOSFET´s
  228. DC OFFSET AT ROTEL
  229. acurus amp bias
  230. Denon AVR-5805 firmware needed
  231. Amp not amping? o.O
  232. amplifier biasing help
  233. How to lower the gain of this headphone amp
  234. The EasyWay AMP
  235. Kenwood A-5S stereo amplidier
  236. can you hear the ringing?
  237. Phase Linear 4000 Series I Transistors
  238. Needed: Amplifier schematic, 4.5V to 9V supply
  239. Carver M-1.0t Repairs
  240. How much VAS current
  241. Cambridge Audio A1 MK3 SE repair (TDA1514 chips burned)
  242. Biasing EF output class B amps...
  243. Design for SS amplifier with OPT
  244. bridgin 2 channel amplifier with output transformer:Mcintosh style
  245. Technics SU-7100
  246. replacing TIP36C transistor with 2SC5200
  247. Transistor matching Questions; Again
  248. question about amplifier push|pull
  249. How Do You Perceive THD at HF?
  250. amplifier Kenwood A-5S

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