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  1. Help needed for constant current source design.
  2. looking for a bridging adapter for power amplifier
  3. LF Ebay Speaker Protection Circuit
  4. Transistor audio ckt & service manual
  5. What Else Can Be Upgraded?
  6. Why bd139 Vbe multiplier?
  7. Aesthetix Atlas - Stereo Power Amplifier - who have heard ?
  8. Direct-coupled amplifier circuit
  9. Popping Crate GX-130C
  10. CPU Coolers on Ebay: junk or not?
  11. DIY STK-0050 module.
  12. Technics SU-Z25
  13. Sumo andromeda series 3 with bad channel
  14. DIY AMP For Auratone
  15. QED Vintage Amp ...
  16. BEST HIGH END POWER SUPPLY OF 35VDC
  17. Plate amp mod
  18. Impedance
  19. Which filter topology do you prefer?
  20. Transistor help for Sony STR-6120
  21. PREAMPLIFIER USHER P307 A
  22. burning hot amp!
  23. TO FUSE OR NOT TO FUSE?
  24. Advice on cheap amplifier repair
  25. My LME49600/49610 PCB design
  26. Low volume issue with Power Amp
  27. Ebay L150W FET Power Amplifier Board IRFP240*6
  28. Best 680uf / 250V capacitor
  29. Can anyone identify this IC package?
  30. Kenwood KA-907
  31. Looking for thread with the attached image
  32. help with warm up noise?
  33. Onkyo TX-SR607 repair
  34. PerfectA Mosfet Power Amp
  35. Fitting Big Capacitors in a QUAD 405
  36. Scrap amp
  37. Onkyo A-RV401
  38. Datasheets for Technics amplifier modules?
  39. Replacing old tube preamp on 1962 Magnavox
  40. High performance feedback for "Lowtech" amplifiers
  41. layout question
  42. HCA 1206
  43. Active highpass filter
  44. Martin Logan Dynamo 700 Plate Amp Issues
  45. Insane Hybrid Headphone Amp (IHHA)
  46. LME49830 PCB...
  47. Cambridge A500 help needed
  48. puzzled
  49. can I use a y-cable
  50. Help needed- slight noise after mod.
  51. BF871 and bf872 equivalent?
  52. Amplifier Issues....
  53. Schematic for Heathkit AR 1214
  54. Sansui G5700 Heat Problem
  55. audiolab 8000A ?
  56. i need service manual for soundcraft sa-1000
  57. Telos 390 clone PCB
  58. Yamaha A-720 amp and the loudness control
  59. Leak Delta 30 amp HELP!!
  60. 637 Amplifiers
  61. reducing thd
  62. Can anyone help with an old ETI magazine article ??
  63. One channel silent - until you increase the volume slightly - on two different amps!
  64. Single BJT amplifier ?
  65. A and T labs K6 amplifier
  66. EP4000 fan mod part number
  67. First Amp, where to start?
  68. adding ground wire to reduce periodic huming noise?
  69. Headphones as an ultimate reference
  70. Sony ta-fb940r humming after transformer replacement 5 connections on sec output ??
  71. help
  72. a complete amplifier
  73. Hartke 3500 Mosfet TA
  74. attenuator dB to reistance calculation
  75. Conn Organ Post Amp to Power Amp Question
  76. Maplin 1kw mosfet amp build thread
  77. Upgrade of a Technics A-800C MK2
  78. Questions about 400W mono amplfier
  79. this circuit will work?
  80. Current mirror using N-MOS 75N75
  81. DIY Project - Nytech CPA602 today ...
  82. Who has listened to the B&K 200.2 amp?
  83. Bryston 3BST operating conditions
  84. old amp need some help
  85. P3A problem - DC at output
  86. parasound hca 1000 blows fuses
  87. carver m1.5t ground hum
  88. High Power Zenquito PCB group buy?
  89. Online shop
  90. NJM4558 and clones - what is minimum supply voltage ?
  91. QUAD 405 main board fuse blow
  92. adjusting VBe
  93. Vertical MOSFETs for a PA amplifier OP
  94. Jvc RX709V Clicking
  95. Dx Super A - a module to be coupled to Dx amplifiers
  96. NAD C370 distorted sound on both channels
  97. Hafler 9505- Bias adjustment
  98. Lets talk about transconductance amplifiers
  99. Class A amp with fully symmetric design using only NPN output transistor
  100. JVC A-K100 Schematic
  101. Another Adcom Amp Question
  102. help with EV 7600 power amp
  103. Do you like listening to distortion?
  104. cyrus 2 repaint colour idea ??
  105. Denon AVR upgrades
  106. Powering an NCC200 frontend...
  107. Home made Cyrus PSX
  108. QUAD 606 MKI
  109. NJL4302/4281 Discontinued.
  110. Where can one buy the Leach Amplifier PCBs ?
  111. cyrus 3 amplifier cutting out
  112. Dx Turbo, the ultimate amplifier to be released before july 2013
  113. Dac 12v for car
  114. Proceed Amp troubleshooting / refurbish
  115. PTEC VI Power Amplifier
  116. troubleshooting old pionner GM-H100 :confused:
  117. I have a question with this amp
  118. Suggestions for mono block amplifier?
  119. HOW TO MAKE A PROPER AMPLIFIER
  120. PA Amplifier comparision
  121. All P-channel Regulator For TSSA Split Supply?
  122. Sherwood RV-8070R
  123. Power Amplifier
  124. Tekko dreams up another poweramp
  125. Help with a 6 channel board
  126. Recommended Speaker Protect Kits ???
  127. how to remove stains in your AMP
  128. DxXs - I am having ideas, things to play...the brain last neuronium is working hard
  129. QUAD 405 power off noise
  130. BC142/143 transistor replacement
  131. Problem with Biema FW900
  132. Tweeter Class A Amp
  133. DC offset
  134. Is 200W possible with simple topology ?
  135. Bypassing tone switch on Rotel RA-931 and RA-930AX
  136. Blown power filter cap
  137. Nytech ca252 help request!
  138. Monrio Asty Dual Mono Mosfet replacements
  139. Some more Wireless World articles archived
  140. Sanken 2SC2922/2SA1216
  141. LOUDSPEAKER PROTECTION
  142. Hafler P3000 -67V on output
  143. Opinions on a Concept
  144. Crowned
  145. Adcom GFA-555 Cap Question: 50V vs 63V
  146. Mark Levinson 333 output transistors
  147. ESP P27 PCB - Needs checking
  148. bridging amplifier with input transformers
  149. P3A-MORE UPGRADES
  150. only four stage AMP
  151. Which transistor is good one
  152. OPA2132P vs OPA2132PA WHAT'S THE DIFFERENCE?
  153. Power Supply ceramic caps burnt
  154. Crate PA head Oscillation at low volume
  155. Leak 2200 maintenance
  156. Biasing Hartke HA 7000
  157. Need help with IC connection
  158. Accidental Death of a DoZ...
  159. Elements between PCB-GND and Mains Earth in SolidState Power Amps - How to Calculate?
  160. power section pops like frying bacon
  161. Any idea at all how the AD8656 OPAMP compares to the AD8620?
  162. Repaired and tested LabGruppen 1000
  163. SONY Is it really true?
  164. Amplifier Simplicity and technology...
  165. Inverting stage not working...help!
  166. Luxman L100 repair
  167. DIY upgrading Meitner MTR-101
  168. should I buy this amp?
  169. 2 ohm with 100W class AB or D amplifier
  170. Ovation e-Amp is Completed
  171. metal film resistors
  172. Using power BJT's beyond their rated (but below their measured) Vceo?
  173. QED A 240 SA Restoration Project
  174. NAD 3240 PE Stereo Amplifier Blows Fuses Immediately
  175. Second attempt at Building my own amp from scratch
  176. Dx Disintegrated Circuit - Dx Dc
  177. Cairn Aria HE
  178. About to Replace Filter Capacitors with Different Type- Help Needed!
  179. What happens with bipolar Rbb as a function of collector current?
  180. would need more data on this amplifier
  181. New to DIY audio, and need some help
  182. Sansui AU-X517R repair and restoration
  183. LSK389 best working points?
  184. Big difference in amps - tag/rotel has me confused
  185. NEW MODEL > LG - ALLIEN
  186. Logitech Amp Reuse
  187. Panasonic FC caps for Class A amp power supply??
  188. DENON POA-6600
  189. Equivalent transistors
  190. NAD 906 silent
  191. Major modification design help needed
  192. HIFI 700W Subwoofer Mono Amplifier Board By 10 Pairs 1943/5200 Amp Board For Subwoofe
  193. Balanced to unbalanced schematic, is this one good?
  194. Altec 9440A how does it sound ?
  195. KSA-50S no sound problem- please help
  196. WSF and DMOSFET´s
  197. DC OFFSET AT ROTEL
  198. acurus amp bias
  199. Denon AVR-5805 firmware needed
  200. Amp not amping? o.O
  201. amplifier biasing help
  202. How to lower the gain of this headphone amp
  203. The EasyWay AMP
  204. Kenwood A-5S stereo amplidier
  205. can you hear the ringing?
  206. Phase Linear 4000 Series I Transistors
  207. Needed: Amplifier schematic, 4.5V to 9V supply
  208. Carver M-1.0t Repairs
  209. How much VAS current
  210. Cambridge Audio A1 MK3 SE repair (TDA1514 chips burned)
  211. Biasing EF output class B amps...
  212. Design for SS amplifier with OPT
  213. bridgin 2 channel amplifier with output transformer:Mcintosh style
  214. Technics SU-7100
  215. replacing TIP36C transistor with 2SC5200
  216. Transistor matching Questions; Again
  217. question about amplifier push|pull
  218. How Do You Perceive THD at HF?
  219. amplifier Kenwood A-5S
  220. power amp kit , L6 VS L7 VS QUAD 45
  221. Rate these Caps
  222. Aragon 24K sp PreAmp by Mondial Designs, possiblity for component/wiring upgrades?
  223. New guy with questions about Adcom 545 recap
  224. Help(tri-amping): Too much gain in my ATC power amp
  225. N-mos Power Amp , my project need some help , Thanks .
  226. Bridging a SS amp with a tuber inverter section
  227. Static in fender stage 1600
  228. STRANGE CAPACITOR
  229. sub woofer
  230. mixer and crosstalk
  231. clipping indicator
  232. The Top Three DIY Amplifiers
  233. The Keantoken Amplifier
  234. Simple Killer Amp, Aspen Amps, Aussie Amps
  235. quad 33 comments please
  236. Krell KSA-100S left channel getting hot
  237. bridging B5 yamaha amplifier
  238. Amp for Pod 2.0 & Zoom 9003 with TA8252H
  239. Faulty Yamaha DSP-A2070
  240. Mod: move if needed: amp without SS or tubes?
  241. Got a Yamaha AX-500U for $25.00
  242. 250W Simple Power Amp Project ??
  243. old school amplifier Pioneer GM4200 SQ
  244. Carver PM1.5 problem
  245. Simple amp circuit obsevations
  246. Some questions about Yamaha R-S700 receiver
  247. New home brew amp module
  248. ezDAC Site Back Up
  249. Use a Pioneer A400 as a Power Amplifier
  250. JLH Class A headphone amp from eBay...setting bias/output help needed

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