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  1. Tubes lifetime and sound
  2. Heater supply problem?
  3. Lowering HV secondary on Power Transformer
  4. Van der Veen 70W tube Amp DIY
  5. 5751 for marantz 7 linestage
  6. To be or not to be, UL or quad?
  7. Tube Failure
  8. 12AX7 Compared!
  9. transformer case grounding
  10. pre/amplifier grounding
  11. First Time Amp
  12. 6ck4 pp amp
  13. JJ electros, any good?
  14. 6AQ5A guitar amp revisited
  15. fun with amps
  16. Newbie needs clarification
  17. looking for powerful Single Ended diagram.
  18. Power amp output newbie question
  19. SE ultralinear amplifier generate a lot of Odd harmonics ?
  20. Grounding Filament CT?
  21. one more 12B4A preamp
  22. 6V6PP -> 6L6 PP with triode connection.
  23. ? about powering a sub with a Fisher 30a mono amp.
  24. Will This Blow Up?
  25. Pin out conversion 6V6-6AQ5A
  26. 211
  27. Nice looking rectifier tubes help
  28. Stepped attenuator inquiry
  29. Designing a Phonostage with the S&B 10K LCR RIAA Module
  30. 211 tube
  31. The T-Rex SET Amplifier DIY project
  32. Strange Wiring in Bogen 6v6 PP
  33. 6AS7 amp schematics
  34. Blue glow confused :(
  35. 6V6 SE and Screen Grid Voltage
  36. 6BQ5 <-> 6V6 without socket job...Any Idea?
  37. Melbourne, Australia valve enthusiasts check in!
  38. HELP! Blown R + HIGH V!
  39. PCB Pad Layout for B9A Noval
  40. DIY tube amps - help??
  41. New home made S.E amps
  42. Amplifier Oscillation
  43. First project, need guidance
  44. Cap max value after 6X5GT/EZ35 rectifier?
  45. Any tube-heads in Scotland?
  46. Care and Feeding of Tube Pins / Sockets
  47. MFA Luminescence--need schematic
  48. Tube technology amplifier
  49. Transformer questions
  50. Siemens C3g headamp problem
  51. rca83 hash?
  52. Skyline SK-10 Amplifier info?
  53. Tube Stereo Consoles from Thrift Stores
  54. Aikido amp theoretical questions
  55. 6V6 Single and 12AT7 SRPP
  56. What 45 SET amp should I build?
  57. Ping. Burnedfingers...
  58. ? problem with www.ampwares.com ?
  59. Pentode spud...?
  60. Type 46 as voltage amplifier
  61. Tube compressor problem!
  62. Using the 83
  63. Organ amp project
  64. Any feedback on these trannies?
  65. 300B PP bias and expected life time
  66. Mono block restoration
  67. Question about cathode bypass capacitor
  68. www.diytube.com Kits
  69. need help!
  70. Need opinion on PS for tube preamp.
  71. Stanley Mullard
  72. 6AK4, Anyone?
  73. interstage transformer
  74. Are matched sets important for this amp?
  75. What to do with ECC88's?
  76. EL38's ?
  77. Cables/tubes for Valve Amp
  78. 8233 / E55L Applications
  79. amplimo budget outputtransformer
  80. Output Transformers for WE-437a WOT Line Preamp
  81. plate resistor, input lead
  82. KT88 PP with Class-A/Class-AB switch
  83. very loud preamp
  84. Pentode current sink
  85. Hammond vs. James?
  86. Tubes for Scott Nixon dac
  87. James SE OPT for 300B & 2A3 on eBay
  88. pre-amp with 6as7??
  89. pre-amp with voltage gain from transformer only
  90. Help! Mystery tube (?) amp (type: HK56)
  91. Regulate the high voltage making better sound? (Preamp)
  92. Power Transformer
  93. Potentiometers UK
  94. AC 120V, neutral, hot, ground
  95. Counterpoint SA-220 Tube section advice needed
  96. 807 Amp
  97. Help me to choose the adequate ferrites
  98. Looking for KT88 circuits.
  99. Building a power amp - help
  100. Sovtek EL34WXT.
  101. Microphonic
  102. preamp gain and output transformer question
  103. Would an s5 K-12M kit suffice?
  104. 6c45 and passive volume control?
  105. Something of Interest to Newbies
  106. Fender Output transformer as an audio amp part
  107. Chinese Tube Amp & DIY .. Pro & Con
  108. Franks Ultimate Preamp....
  109. Interstage Transformer Nomenclature
  110. PP or SE for Horns?
  111. Output transformer in SIMetrix?
  112. seampcad
  113. Looking for an amp project
  114. Unison Research Smart 845 schematics
  115. HELP - From the audiophile Heads - Amp Advice
  116. 8233, 8116 &amp; 6BZ6 valves - what are they good for?
  117. wires of output transformer are too thin!
  118. Reichert Feral Eye
  119. BIG LOUD SCREECH on LEFT channel only
  120. humming from volume
  121. Paia TubeHead and Symmetry Trims
  122. Output trafo for WE-91 L'Audiophile amp?
  123. Transformer voltage too high for 300B amp
  124. More shopping help please - GE Combo 330
  125. Bias filtering
  126. PP pentode screen supply
  127. 6v6 and OPT with 10-12k ohm(primary impedence)
  128. Identity Help - Is it worth working on
  129. Need info about 5G84 tube
  130. RF Noise in Power Supply
  131. My audionote Kit one have problem on 300B cathode terminal
  132. Partial Feedback Amplifiers
  133. filament transformer vs plate transformer
  134. Any subs for 6N1 & 6N2 twin triode valves?
  135. PSU questions
  136. Any designs for 6EJ7 out there?
  137. SRPP headphoneamp with E88CC
  138. newbie to DIY
  139. Just bought a leak stereo 20 (pics!)
  140. Mysterious Output Transformer....
  141. Hum free 5687 AC filament supply, is it possable ?
  142. Will This Preamp Work
  143. help with input pot on el84 PP amp
  144. NOS Philmore Output Transformern or Modern
  145. tube amp
  146. power supply, Help please!!!
  147. Tubes and magnetic fields
  148. Driver tube for 45 interstage 1:1
  149. 89 db is it enough ?
  150. Troubl-shooting heater voltage for filament
  151. arcing in rectifier tube
  152. 1/8" Aluminum for top plate?
  153. Shopping list
  154. 6sn7 valves
  155. Neon flashes with the music
  156. Help in SE 807 amp
  157. naim user defects to valves !
  158. tamura opt need help
  159. Line stage question
  160. Tube question, how to read the difference.
  161. What Tube amp for Biginner?
  162. Leak Stereo 20 rebuild/restore question
  163. Is there any advantage in using preamp tubes in output stages ??
  164. 12b4 as PP output tubes
  165. Valves stripped bare….
  166. Anybody know this TUBE?
  167. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  168. Need help understanding something about UL stages
  169. I'd like to make a simple 50 amplifier
  170. gates tube pre-amp info??
  171. OT - To those who correspond with me....
  172. Could use info on Grommes + knight.
  173. Single Ended Ultra linear, anyone built one?
  174. Audio Innovations 800 Anniversary problem
  175. Transformer coupled 6SN7 push-pull DAC output stage?
  176. Vkh max voltage
  177. Mosfet differences with valves
  178. Need schematic - Audio Research LS2B MKII
  179. EL84M specs.
  180. What to do with these?
  181. Dyna Mk IV Driver Boards
  182. OTL driving series arrays
  183. Voltage problem
  184. Amp intermittently blowing fuse at power up
  185. Worlds Best Preamp
  186. Heathkit TT-1A Calibration
  187. surplus 12ax7a
  188. Phase Splitter as input stage
  189. DHT DC heater question
  190. Wanted-Assembly manual for Scott LK-150
  191. Happy new year, sophielove.
  192. Need UTC PVM-3 primary ?
  193. power amp for small studio
  194. Preamp
  195. Problems with EICO HF-12 amp.
  196. Technics SU-30A's schema???
  197. Tube PWM driver
  198. Tungsram tube data
  199. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  200. sharp cutoff pentode
  201. JJ E34L failure(s)
  202. Valve effects loop
  203. Bruce Moore "Companion" - Schematic
  204. CT impedence mismatch?
  205. Tube multiplex adapter parts replacement
  206. SY gets jiggy (5692 measurements)
  207. Tube Drag Racing!
  208. OTL, quick `n dirty
  209. 6V6 stereo amp
  210. humming from amplifier
  211. Mesa boogie
  212. Any tube audiophile in New Dephli, India
  213. What are terminal 1 & 4 of 300B tube
  214. Tube Nube - need advice on Scott LK150
  215. Pentode AB1 or AB2?
  216. #56 tube line stage
  217. **** another unusual hum problem !!
  218. Any comments on Eico HF-14 and HF-85
  219. sensitivities of amplifier configurations
  220. Building a Sun Audio sv 300b Mk II clone
  221. wanted information! vellman vaa-70 tube amp
  222. old tubes, what to do?
  223. Knowledge needed. Need answer to basic yet puzzling question.
  224. tubes 5965A and 5814A
  225. 6s4a as driver for 6as7 in SEAmp
  226. Tube Manufactures Cross references
  227. KT88 vs. KT90 bench test
  228. Variable Voltage Technology(uk) iron
  229. Tutorial: building techniques
  230. Anyone tried UL or Triode connecting the $140 kit ?
  231. Using microphone transformers as phase splitters .
  232. Tube Cooling Recommendations
  233. WE 300B Vs &amp;&amp;&amp;&amp;
  234. Line stage board off from overseas. problems
  235. Volume control for tube amplifier ??
  236. Mro Pt8
  237. looking for se 811 schematics
  238. 6ar5??
  239. bias meter
  240. 829B/3E29 datasheet triodemode
  241. A better triode strap?
  242. outputtransformer data needed
  243. info wanted about a output transformer
  244. WE316a/VT191 triode
  245. electrolytic can capacitor
  246. Bogen DS-225
  247. PPP KT66, Jensen P15N, Hammond PowTran 378CX/193L Choke
  248. 6V6GT and 6L6GT
  249. Unknown vaccumtubes
  250. Milleroux OPT