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  1. which one?
  2. system matching
  3. a 5ar4 problem
  4. coupling capacitor intermediate values
  5. Quicksilver Mono 60 upgrades
  6. Can anything be done
  7. OTL ECC88 amp
  8. Bridging Mono Blocks
  9. Cathode-coupled Phase Splitter Formula
  10. Drd 45, 300b
  11. SV572-30: Opinions?
  12. Poor man's transformer volume control?
  13. Output current of this CAT SL-1 schematic ?
  14. Fixed Bias Circuit for 300B
  15. want to build SE450TL
  16. Tubes lifetime and sound
  17. Heater supply problem?
  18. Lowering HV secondary on Power Transformer
  19. Van der Veen 70W tube Amp DIY
  20. 5751 for marantz 7 linestage
  21. To be or not to be, UL or quad?
  22. Tube Failure
  23. 12AX7 Compared!
  24. transformer case grounding
  25. pre/amplifier grounding
  26. First Time Amp
  27. 6ck4 pp amp
  28. JJ electros, any good?
  29. fun with amps
  30. Newbie needs clarification
  31. looking for powerful Single Ended diagram.
  32. Power amp output newbie question
  33. SE ultralinear amplifier generate a lot of Odd harmonics ?
  34. Grounding Filament CT?
  35. one more 12B4A preamp
  36. 6V6PP -> 6L6 PP with triode connection.
  37. ? about powering a sub with a Fisher 30a mono amp.
  38. Pin out conversion 6V6-6AQ5A
  39. 211
  40. Nice looking rectifier tubes help
  41. Stepped attenuator inquiry
  42. Designing a Phonostage with the S&B 10K LCR RIAA Module
  43. 211 tube
  44. The T-Rex SET Amplifier DIY project
  45. Strange Wiring in Bogen 6v6 PP
  46. 6AS7 amp schematics
  47. Blue glow confused :(
  48. 6V6 SE and Screen Grid Voltage
  49. 6BQ5 <-> 6V6 without socket job...Any Idea?
  50. Melbourne, Australia valve enthusiasts check in!
  51. HELP! Blown R + HIGH V!
  52. PCB Pad Layout for B9A Noval
  53. DIY tube amps - help??
  54. New home made S.E amps
  55. Amplifier Oscillation
  56. First project, need guidance
  57. Cap max value after 6X5GT/EZ35 rectifier?
  58. Any tube-heads in Scotland?
  59. Care and Feeding of Tube Pins / Sockets
  60. MFA Luminescence--need schematic
  61. Tube technology amplifier
  62. Transformer questions
  63. Siemens C3g headamp problem
  64. rca83 hash?
  65. Skyline SK-10 Amplifier info?
  66. Tube Stereo Consoles from Thrift Stores
  67. Aikido amp theoretical questions
  68. 6V6 Single and 12AT7 SRPP
  69. What 45 SET amp should I build?
  70. Ping. Burnedfingers...
  71. ? problem with www.ampwares.com ?
  72. Pentode spud...?
  73. Type 46 as voltage amplifier
  74. Tube compressor problem!
  75. Using the 83
  76. Organ amp project
  77. Any feedback on these trannies?
  78. 300B PP bias and expected life time
  79. Mono block restoration
  80. Question about cathode bypass capacitor
  81. www.diytube.com Kits
  82. need help!
  83. Need opinion on PS for tube preamp.
  84. Stanley Mullard
  85. 6AK4, Anyone?
  86. interstage transformer
  87. Are matched sets important for this amp?
  88. What to do with ECC88's?
  89. EL38's ?
  90. Cables/tubes for Valve Amp
  91. 8233 / E55L Applications
  92. amplimo budget outputtransformer
  93. Output Transformers for WE-437a WOT Line Preamp
  94. plate resistor, input lead
  95. KT88 PP with Class-A/Class-AB switch
  96. very loud preamp
  97. Pentode current sink
  98. Hammond vs. James?
  99. Tubes for Scott Nixon dac
  100. James SE OPT for 300B & 2A3 on eBay
  101. pre-amp with 6as7??
  102. pre-amp with voltage gain from transformer only
  103. Help! Mystery tube (?) amp (type: HK56)
  104. Regulate the high voltage making better sound? (Preamp)
  105. Power Transformer
  106. Potentiometers UK
  107. AC 120V, neutral, hot, ground
  108. Counterpoint SA-220 Tube section advice needed
  109. 807 Amp
  110. Help me to choose the adequate ferrites
  111. Looking for KT88 circuits.
  112. Building a power amp - help
  113. Sovtek EL34WXT.
  114. Microphonic
  115. preamp gain and output transformer question
  116. Would an s5 K-12M kit suffice?
  117. 6c45 and passive volume control?
  118. Something of Interest to Newbies
  119. Chinese Tube Amp & DIY .. Pro & Con
  120. Franks Ultimate Preamp....
  121. Interstage Transformer Nomenclature
  122. PP or SE for Horns?
  123. Output transformer in SIMetrix?
  124. seampcad
  125. Looking for an amp project
  126. Unison Research Smart 845 schematics
  127. HELP - From the audiophile Heads - Amp Advice
  128. 8233, 8116 &amp; 6BZ6 valves - what are they good for?
  129. wires of output transformer are too thin!
  130. Reichert Feral Eye
  131. BIG LOUD SCREECH on LEFT channel only
  132. humming from volume
  133. Paia TubeHead and Symmetry Trims
  134. Output trafo for WE-91 L'Audiophile amp?
  135. Transformer voltage too high for 300B amp
  136. More shopping help please - GE Combo 330
  137. Bias filtering
  138. PP pentode screen supply
  139. 6v6 and OPT with 10-12k ohm(primary impedence)
  140. Identity Help - Is it worth working on
  141. Need info about 5G84 tube
  142. RF Noise in Power Supply
  143. My audionote Kit one have problem on 300B cathode terminal
  144. Partial Feedback Amplifiers
  145. filament transformer vs plate transformer
  146. Any subs for 6N1 & 6N2 twin triode valves?
  147. PSU questions
  148. Any designs for 6EJ7 out there?
  149. SRPP headphoneamp with E88CC
  150. newbie to DIY
  151. Just bought a leak stereo 20 (pics!)
  152. Mysterious Output Transformer....
  153. Hum free 5687 AC filament supply, is it possable ?
  154. Will This Preamp Work
  155. help with input pot on el84 PP amp
  156. NOS Philmore Output Transformern or Modern
  157. tube amp
  158. power supply, Help please!!!
  159. Tubes and magnetic fields
  160. Driver tube for 45 interstage 1:1
  161. 89 db is it enough ?
  162. Troubl-shooting heater voltage for filament
  163. arcing in rectifier tube
  164. 1/8" Aluminum for top plate?
  165. Shopping list
  166. 6sn7 valves
  167. Neon flashes with the music
  168. Help in SE 807 amp
  169. naim user defects to valves !
  170. tamura opt need help
  171. Line stage question
  172. Tube question, how to read the difference.
  173. What Tube amp for Biginner?
  174. Leak Stereo 20 rebuild/restore question
  175. Is there any advantage in using preamp tubes in output stages ??
  176. 12b4 as PP output tubes
  177. Valves stripped bare….
  178. Anybody know this TUBE?
  179. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  180. Need help understanding something about UL stages
  181. I'd like to make a simple 50 amplifier
  182. gates tube pre-amp info??
  183. OT - To those who correspond with me....
  184. Could use info on Grommes + knight.
  185. Single Ended Ultra linear, anyone built one?
  186. Audio Innovations 800 Anniversary problem
  187. Transformer coupled 6SN7 push-pull DAC output stage?
  188. Vkh max voltage
  189. Mosfet differences with valves
  190. Need schematic - Audio Research LS2B MKII
  191. EL84M specs.
  192. What to do with these?
  193. Dyna Mk IV Driver Boards
  194. OTL driving series arrays
  195. Voltage problem
  196. Amp intermittently blowing fuse at power up
  197. Worlds Best Preamp
  198. Heathkit TT-1A Calibration
  199. surplus 12ax7a
  200. Phase Splitter as input stage
  201. DHT DC heater question
  202. Wanted-Assembly manual for Scott LK-150
  203. Happy new year, sophielove.
  204. Need UTC PVM-3 primary ?
  205. power amp for small studio
  206. Preamp
  207. Problems with EICO HF-12 amp.
  208. Technics SU-30A's schema???
  209. Tube PWM driver
  210. Tungsram tube data
  211. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  212. sharp cutoff pentode
  213. JJ E34L failure(s)
  214. Valve effects loop
  215. Bruce Moore "Companion" - Schematic
  216. CT impedence mismatch?
  217. Tube multiplex adapter parts replacement
  218. SY gets jiggy (5692 measurements)
  219. Tube Drag Racing!
  220. OTL, quick `n dirty
  221. 6V6 stereo amp
  222. humming from amplifier
  223. Any tube audiophile in New Dephli, India
  224. What are terminal 1 & 4 of 300B tube
  225. Tube Nube - need advice on Scott LK150
  226. Pentode AB1 or AB2?
  227. #56 tube line stage
  228. **** another unusual hum problem !!
  229. Any comments on Eico HF-14 and HF-85
  230. sensitivities of amplifier configurations
  231. Building a Sun Audio sv 300b Mk II clone
  232. wanted information! vellman vaa-70 tube amp
  233. old tubes, what to do?
  234. Knowledge needed. Need answer to basic yet puzzling question.
  235. tubes 5965A and 5814A
  236. 6s4a as driver for 6as7 in SEAmp
  237. Tube Manufactures Cross references
  238. KT88 vs. KT90 bench test
  239. Variable Voltage Technology(uk) iron
  240. Tutorial: building techniques
  241. Anyone tried UL or Triode connecting the $140 kit ?
  242. Using microphone transformers as phase splitters .
  243. Tube Cooling Recommendations
  244. WE 300B Vs &amp;&amp;&amp;&amp;
  245. Line stage board off from overseas. problems
  246. Volume control for tube amplifier ??
  247. Mro Pt8
  248. looking for se 811 schematics
  249. 6ar5??
  250. bias meter

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