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  1. OPtimizing the VBE MUltiplier
  2. cure for motorboating sound
  3. Loudness contro-circuit or project
  4. Yamaha DSP-AX750se........Dead, No Power
  5. Channel Distortion
  6. Carver PM350
  7. Apogee Acoustics® Power Amp for RIBBON "Current Source 160c" who have heard?
  8. Chassis design for SS amp.
  9. Newbie with a problem. Amp cuts out with more power (not volume)
  10. Yamaha R-2000 volume control
  11. Goldmund clone on the bay
  12. Quad 303 - Repair/Upgrade
  13. Building "The Wire AMP" Class A/AB Power Amplifier"
  14. Noise measurement conversion
  15. Question about preamp input impedance
  16. Tight-wad amplifier suggestions
  17. Squeal on turning off Rotel.
  18. Old Transistors
  19. board suggestion for given PSU (+/-45v or +/- 90v)
  20. Help Definitive Technology supercube 2
  21. help repair amplifier
  22. Adding DC Protection to a CA P500 Power-Amp
  23. problem with my loudspeaker protection circuit
  24. Class A amp based on STK 3102-III
  25. Selling transistors 2SK1530-2sj201
  26. Which amp ??
  27. Upgrading output devices and prefinals on Dyna PM1
  28. Yamaha CR2020
  29. Bias speader for single ended front end
  30. Mark Levinson JC2 and ML1 modules
  31. A different buffer
  32. Active filter - Loudness
  33. High quality audio amplifier to 100W
  34. Project: Upgrading Mitsubishi DA-A10 to DA-A15
  35. Please help... Yamaha AV Receiver RX-V550 not turning
  36. sansui a700 service manual wanted
  37. Dyson 'ring' fans; how do they work?
  38. Adding Gain Control to a Power-Amp
  39. Picking replacement output devices for Yamaha M-45
  40. Erm, what is mine?
  41. A little help please
  42. Nad 3130 Toast
  43. Degeneration resistors in long tailed pair
  44. Adcom 535 popping
  45. Amp distortion
  46. IRFP450 for output stage
  47. Fun Day
  48. Help needed for constant current source design.
  49. looking for a bridging adapter for power amplifier
  50. LF Ebay Speaker Protection Circuit
  51. Transistor audio ckt & service manual
  52. What Else Can Be Upgraded?
  53. Why bd139 Vbe multiplier?
  54. Aesthetix Atlas - Stereo Power Amplifier - who have heard ?
  55. Direct-coupled amplifier circuit
  56. Popping Crate GX-130C
  57. CPU Coolers on Ebay: junk or not?
  58. DIY STK-0050 module.
  59. Technics SU-Z25
  60. Sumo andromeda series 3 with bad channel
  61. DIY AMP For Auratone
  62. QED Vintage Amp ...
  63. BEST HIGH END POWER SUPPLY OF 35VDC
  64. Plate amp mod
  65. Impedance
  66. Which filter topology do you prefer?
  67. Transistor help for Sony STR-6120
  68. PREAMPLIFIER USHER P307 A
  69. burning hot amp!
  70. TO FUSE OR NOT TO FUSE?
  71. Advice on cheap amplifier repair
  72. My LME49600/49610 PCB design
  73. Low volume issue with Power Amp
  74. Ebay L150W FET Power Amplifier Board IRFP240*6
  75. Best 680uf / 250V capacitor
  76. Can anyone identify this IC package?
  77. Kenwood KA-907
  78. Looking for thread with the attached image
  79. help with warm up noise?
  80. Onkyo TX-SR607 repair
  81. PerfectA Mosfet Power Amp
  82. Fitting Big Capacitors in a QUAD 405
  83. Scrap amp
  84. Onkyo A-RV401
  85. Datasheets for Technics amplifier modules?
  86. Replacing old tube preamp on 1962 Magnavox
  87. High performance feedback for "Lowtech" amplifiers
  88. layout question
  89. HCA 1206
  90. Active highpass filter
  91. Martin Logan Dynamo 700 Plate Amp Issues
  92. Insane Hybrid Headphone Amp (IHHA)
  93. LME49830 PCB...
  94. Cambridge A500 help needed
  95. puzzled
  96. can I use a y-cable
  97. Help needed- slight noise after mod.
  98. BF871 and bf872 equivalent?
  99. Amplifier Issues....
  100. Schematic for Heathkit AR 1214
  101. Sansui G5700 Heat Problem
  102. audiolab 8000A ?
  103. i need service manual for soundcraft sa-1000
  104. Telos 390 clone PCB
  105. Yamaha A-720 amp and the loudness control
  106. Leak Delta 30 amp HELP!!
  107. 637 Amplifiers
  108. reducing thd
  109. Can anyone help with an old ETI magazine article ??
  110. One channel silent - until you increase the volume slightly - on two different amps!
  111. Single BJT amplifier ?
  112. A and T labs K6 amplifier
  113. EP4000 fan mod part number
  114. First Amp, where to start?
  115. adding ground wire to reduce periodic huming noise?
  116. Headphones as an ultimate reference
  117. Sony ta-fb940r humming after transformer replacement 5 connections on sec output ??
  118. help
  119. a complete amplifier
  120. Hartke 3500 Mosfet TA
  121. attenuator dB to reistance calculation
  122. Conn Organ Post Amp to Power Amp Question
  123. Maplin 1kw mosfet amp build thread
  124. Upgrade of a Technics A-800C MK2
  125. Questions about 400W mono amplfier
  126. this circuit will work?
  127. Current mirror using N-MOS 75N75
  128. DIY Project - Nytech CPA602 today ...
  129. Who has listened to the B&K 200.2 amp?
  130. Bryston 3BST operating conditions
  131. old amp need some help
  132. P3A problem - DC at output
  133. parasound hca 1000 blows fuses
  134. carver m1.5t ground hum
  135. High Power Zenquito PCB group buy?
  136. Online shop
  137. NJM4558 and clones - what is minimum supply voltage ?
  138. QUAD 405 main board fuse blow
  139. adjusting VBe
  140. Vertical MOSFETs for a PA amplifier OP
  141. Jvc RX709V Clicking
  142. Dx Super A - a module to be coupled to Dx amplifiers
  143. NAD C370 distorted sound on both channels
  144. Hafler 9505- Bias adjustment
  145. Lets talk about transconductance amplifiers
  146. Class A amp with fully symmetric design using only NPN output transistor
  147. JVC A-K100 Schematic
  148. Another Adcom Amp Question
  149. help with EV 7600 power amp
  150. Do you like listening to distortion?
  151. cyrus 2 repaint colour idea ??
  152. Denon AVR upgrades
  153. Powering an NCC200 frontend...
  154. Home made Cyrus PSX
  155. QUAD 606 MKI
  156. NJL4302/4281 Discontinued.
  157. Where can one buy the Leach Amplifier PCBs ?
  158. cyrus 3 amplifier cutting out
  159. Dx Turbo, the ultimate amplifier to be released before july 2013
  160. Dac 12v for car
  161. Proceed Amp troubleshooting / refurbish
  162. PTEC VI Power Amplifier
  163. troubleshooting old pionner GM-H100 :confused:
  164. I have a question with this amp
  165. Suggestions for mono block amplifier?
  166. HOW TO MAKE A PROPER AMPLIFIER
  167. PA Amplifier comparision
  168. All P-channel Regulator For TSSA Split Supply?
  169. Sherwood RV-8070R
  170. Power Amplifier
  171. Tekko dreams up another poweramp
  172. Help with a 6 channel board
  173. Recommended Speaker Protect Kits ???
  174. how to remove stains in your AMP
  175. DxXs - I am having ideas, things to play...the brain last neuronium is working hard
  176. QUAD 405 power off noise
  177. BC142/143 transistor replacement
  178. Problem with Biema FW900
  179. Tweeter Class A Amp
  180. DC offset
  181. Is 200W possible with simple topology ?
  182. Bypassing tone switch on Rotel RA-931 and RA-930AX
  183. Blown power filter cap
  184. Nytech ca252 help request!
  185. Monrio Asty Dual Mono Mosfet replacements
  186. Some more Wireless World articles archived
  187. Sanken 2SC2922/2SA1216
  188. LOUDSPEAKER PROTECTION
  189. Hafler P3000 -67V on output
  190. Opinions on a Concept
  191. Crowned
  192. Adcom GFA-555 Cap Question: 50V vs 63V
  193. Mark Levinson 333 output transistors
  194. ESP P27 PCB - Needs checking
  195. bridging amplifier with input transformers
  196. P3A-More upgrades
  197. only four stage AMP
  198. Which transistor is good one
  199. OPA2132P vs OPA2132PA WHAT'S THE DIFFERENCE?
  200. Power Supply ceramic caps burnt
  201. Crate PA head Oscillation at low volume
  202. Leak 2200 maintenance
  203. Biasing Hartke HA 7000
  204. Need help with IC connection
  205. Accidental Death of a DoZ...
  206. Elements between PCB-GND and Mains Earth in SolidState Power Amps - How to Calculate?
  207. power section pops like frying bacon
  208. Any idea at all how the AD8656 OPAMP compares to the AD8620?
  209. Repaired and tested LabGruppen 1000
  210. SONY Is it really true?
  211. Amplifier Simplicity and technology...
  212. Inverting stage not working...help!
  213. Luxman L100 repair
  214. DIY upgrading Meitner MTR-101
  215. should I buy this amp?
  216. 2 ohm with 100W class AB or D amplifier
  217. Ovation e-Amp is Completed
  218. metal film resistors
  219. Using power BJT's beyond their rated (but below their measured) Vceo?
  220. QED A 240 SA Restoration Project
  221. NAD 3240 PE Stereo Amplifier Blows Fuses Immediately
  222. Second attempt at Building my own amp from scratch
  223. Dx Disintegrated Circuit - Dx Dc
  224. Cairn Aria HE
  225. About to Replace Filter Capacitors with Different Type- Help Needed!
  226. What happens with bipolar Rbb as a function of collector current?
  227. would need more data on this amplifier
  228. New to DIY audio, and need some help
  229. Sansui AU-X517R repair and restoration
  230. LSK389 best working points?
  231. Big difference in amps - tag/rotel has me confused
  232. NEW MODEL > LG - ALLIEN
  233. Logitech Amp Reuse
  234. Panasonic FC caps for Class A amp power supply??
  235. DENON POA-6600
  236. Equivalent transistors
  237. NAD 906 silent
  238. Major modification design help needed
  239. HIFI 700W Subwoofer Mono Amplifier Board By 10 Pairs 1943/5200 Amp Board For Subwoofe
  240. Balanced to unbalanced schematic, is this one good?
  241. Altec 9440A how does it sound ?
  242. KSA-50S no sound problem- please help
  243. WSF and DMOSFET´s
  244. DC OFFSET AT ROTEL
  245. acurus amp bias
  246. Denon AVR-5805 firmware needed
  247. Amp not amping? o.O
  248. amplifier biasing help
  249. How to lower the gain of this headphone amp
  250. The EasyWay AMP

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