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  1. Plate curves or Op Point for 6KN8?
  2. 12e1 sub for 807 ?
  3. Extremely low power and low loss transformers
  4. looking for power supply diagram SE 813 45 Watt
  5. How to make this 6C33C better??
  6. All octal 6AS7 PP amp – is it possible?
  7. Toroids VS EI Transfomers
  8. Bias secrets for a HH Scott 233?!?
  9. new idea of DHT heater supply
  10. Eastern Audio transformers: any good?
  11. UL40-S2 schematic
  12. Tube monster amplifier
  13. Big pentode help!
  14. which one?
  15. system matching
  16. a 5ar4 problem
  17. coupling capacitor intermediate values
  18. Quicksilver Mono 60 upgrades
  19. Can anything be done
  20. OTL ECC88 amp
  21. Bridging Mono Blocks
  22. Cathode-coupled Phase Splitter Formula
  23. Drd 45, 300b
  24. SV572-30: Opinions?
  25. Poor man's transformer volume control?
  26. Output current of this CAT SL-1 schematic ?
  27. Fixed Bias Circuit for 300B
  28. want to build SE450TL
  29. Tubes lifetime and sound
  30. Heater supply problem?
  31. Lowering HV secondary on Power Transformer
  32. Van der Veen 70W tube Amp DIY
  33. 5751 for marantz 7 linestage
  34. To be or not to be, UL or quad?
  35. Tube Failure
  36. 12AX7 Compared!
  37. transformer case grounding
  38. pre/amplifier grounding
  39. First Time Amp
  40. 6ck4 pp amp
  41. JJ electros, any good?
  42. 6AQ5A guitar amp revisited
  43. fun with amps
  44. Newbie needs clarification
  45. looking for powerful Single Ended diagram.
  46. Power amp output newbie question
  47. SE ultralinear amplifier generate a lot of Odd harmonics ?
  48. Grounding Filament CT?
  49. one more 12B4A preamp
  50. 6V6PP -> 6L6 PP with triode connection.
  51. ? about powering a sub with a Fisher 30a mono amp.
  52. Will This Blow Up?
  53. Pin out conversion 6V6-6AQ5A
  54. 211
  55. Nice looking rectifier tubes help
  56. Stepped attenuator inquiry
  57. Designing a Phonostage with the S&B 10K LCR RIAA Module
  58. 211 tube
  59. The T-Rex SET Amplifier DIY project
  60. Strange Wiring in Bogen 6v6 PP
  61. 6AS7 amp schematics
  62. Blue glow confused :(
  63. 6V6 SE and Screen Grid Voltage
  64. 6BQ5 <-> 6V6 without socket job...Any Idea?
  65. Melbourne, Australia valve enthusiasts check in!
  66. HELP! Blown R + HIGH V!
  67. PCB Pad Layout for B9A Noval
  68. DIY tube amps - help??
  69. New home made S.E amps
  70. Amplifier Oscillation
  71. First project, need guidance
  72. Cap max value after 6X5GT/EZ35 rectifier?
  73. Any tube-heads in Scotland?
  74. Care and Feeding of Tube Pins / Sockets
  75. MFA Luminescence--need schematic
  76. Tube technology amplifier
  77. Transformer questions
  78. Siemens C3g headamp problem
  79. rca83 hash?
  80. Skyline SK-10 Amplifier info?
  81. Tube Stereo Consoles from Thrift Stores
  82. Aikido amp theoretical questions
  83. 6V6 Single and 12AT7 SRPP
  84. What 45 SET amp should I build?
  85. Ping. Burnedfingers...
  86. ? problem with www.ampwares.com ?
  87. Pentode spud...?
  88. Type 46 as voltage amplifier
  89. Tube compressor problem!
  90. Using the 83
  91. Organ amp project
  92. Any feedback on these trannies?
  93. 300B PP bias and expected life time
  94. Mono block restoration
  95. Question about cathode bypass capacitor
  96. www.diytube.com Kits
  97. need help!
  98. Need opinion on PS for tube preamp.
  99. Stanley Mullard
  100. 6AK4, Anyone?
  101. interstage transformer
  102. Are matched sets important for this amp?
  103. What to do with ECC88's?
  104. EL38's ?
  105. Cables/tubes for Valve Amp
  106. 8233 / E55L Applications
  107. amplimo budget outputtransformer
  108. Output Transformers for WE-437a WOT Line Preamp
  109. plate resistor, input lead
  110. KT88 PP with Class-A/Class-AB switch
  111. very loud preamp
  112. Pentode current sink
  113. Hammond vs. James?
  114. Tubes for Scott Nixon dac
  115. James SE OPT for 300B & 2A3 on eBay
  116. pre-amp with 6as7??
  117. pre-amp with voltage gain from transformer only
  118. Help! Mystery tube (?) amp (type: HK56)
  119. Regulate the high voltage making better sound? (Preamp)
  120. Power Transformer
  121. Potentiometers UK
  122. AC 120V, neutral, hot, ground
  123. Counterpoint SA-220 Tube section advice needed
  124. 807 Amp
  125. Help me to choose the adequate ferrites
  126. Looking for KT88 circuits.
  127. Building a power amp - help
  128. Sovtek EL34WXT.
  129. Microphonic
  130. preamp gain and output transformer question
  131. Would an s5 K-12M kit suffice?
  132. 6c45 and passive volume control?
  133. Something of Interest to Newbies
  134. Fender Output transformer as an audio amp part
  135. Chinese Tube Amp & DIY .. Pro & Con
  136. Franks Ultimate Preamp....
  137. Interstage Transformer Nomenclature
  138. PP or SE for Horns?
  139. Output transformer in SIMetrix?
  140. seampcad
  141. Looking for an amp project
  142. Unison Research Smart 845 schematics
  143. HELP - From the audiophile Heads - Amp Advice
  144. 8233, 8116 &amp; 6BZ6 valves - what are they good for?
  145. wires of output transformer are too thin!
  146. Reichert Feral Eye
  147. BIG LOUD SCREECH on LEFT channel only
  148. humming from volume
  149. Paia TubeHead and Symmetry Trims
  150. Output trafo for WE-91 L'Audiophile amp?
  151. Transformer voltage too high for 300B amp
  152. More shopping help please - GE Combo 330
  153. Bias filtering
  154. PP pentode screen supply
  155. 6v6 and OPT with 10-12k ohm(primary impedence)
  156. Identity Help - Is it worth working on
  157. Need info about 5G84 tube
  158. RF Noise in Power Supply
  159. My audionote Kit one have problem on 300B cathode terminal
  160. Partial Feedback Amplifiers
  161. filament transformer vs plate transformer
  162. Any subs for 6N1 & 6N2 twin triode valves?
  163. PSU questions
  164. Any designs for 6EJ7 out there?
  165. SRPP headphoneamp with E88CC
  166. newbie to DIY
  167. Just bought a leak stereo 20 (pics!)
  168. Mysterious Output Transformer....
  169. Hum free 5687 AC filament supply, is it possable ?
  170. Will This Preamp Work
  171. help with input pot on el84 PP amp
  172. NOS Philmore Output Transformern or Modern
  173. tube amp
  174. power supply, Help please!!!
  175. Tubes and magnetic fields
  176. Driver tube for 45 interstage 1:1
  177. 89 db is it enough ?
  178. Troubl-shooting heater voltage for filament
  179. arcing in rectifier tube
  180. 1/8" Aluminum for top plate?
  181. Shopping list
  182. 6sn7 valves
  183. Neon flashes with the music
  184. Help in SE 807 amp
  185. naim user defects to valves !
  186. tamura opt need help
  187. Line stage question
  188. Tube question, how to read the difference.
  189. What Tube amp for Biginner?
  190. Leak Stereo 20 rebuild/restore question
  191. Is there any advantage in using preamp tubes in output stages ??
  192. 12b4 as PP output tubes
  193. Valves stripped bare….
  194. Anybody know this TUBE?
  195. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  196. Need help understanding something about UL stages
  197. I'd like to make a simple 50 amplifier
  198. gates tube pre-amp info??
  199. OT - To those who correspond with me....
  200. Could use info on Grommes + knight.
  201. Single Ended Ultra linear, anyone built one?
  202. Audio Innovations 800 Anniversary problem
  203. Transformer coupled 6SN7 push-pull DAC output stage?
  204. Vkh max voltage
  205. Mosfet differences with valves
  206. Need schematic - Audio Research LS2B MKII
  207. EL84M specs.
  208. What to do with these?
  209. Dyna Mk IV Driver Boards
  210. OTL driving series arrays
  211. Voltage problem
  212. Amp intermittently blowing fuse at power up
  213. Worlds Best Preamp
  214. Heathkit TT-1A Calibration
  215. surplus 12ax7a
  216. Phase Splitter as input stage
  217. DHT DC heater question
  218. Wanted-Assembly manual for Scott LK-150
  219. Happy new year, sophielove.
  220. Need UTC PVM-3 primary ?
  221. power amp for small studio
  222. Preamp
  223. Problems with EICO HF-12 amp.
  224. Technics SU-30A's schema???
  225. Tube PWM driver
  226. Tungsram tube data
  227. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  228. sharp cutoff pentode
  229. JJ E34L failure(s)
  230. Valve effects loop
  231. Bruce Moore "Companion" - Schematic
  232. CT impedence mismatch?
  233. Tube multiplex adapter parts replacement
  234. SY gets jiggy (5692 measurements)
  235. Tube Drag Racing!
  236. OTL, quick `n dirty
  237. 6V6 stereo amp
  238. humming from amplifier
  239. Mesa boogie
  240. Any tube audiophile in New Dephli, India
  241. What are terminal 1 & 4 of 300B tube
  242. Tube Nube - need advice on Scott LK150
  243. Pentode AB1 or AB2?
  244. #56 tube line stage
  245. **** another unusual hum problem !!
  246. Any comments on Eico HF-14 and HF-85
  247. sensitivities of amplifier configurations
  248. Building a Sun Audio sv 300b Mk II clone
  249. wanted information! vellman vaa-70 tube amp
  250. old tubes, what to do?

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