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  1. Pentode spud...?
  2. Type 46 as voltage amplifier
  3. Tube compressor problem!
  4. Using the 83
  5. Organ amp project
  6. Any feedback on these trannies?
  7. 300B PP bias and expected life time
  8. Mono block restoration
  9. Question about cathode bypass capacitor
  10. www.diytube.com Kits
  11. need help!
  12. Need opinion on PS for tube preamp.
  13. Stanley Mullard
  14. 6AK4, Anyone?
  15. interstage transformer
  16. Are matched sets important for this amp?
  17. What to do with ECC88's?
  18. EL38's ?
  19. Cables/tubes for Valve Amp
  20. 8233 / E55L Applications
  21. amplimo budget outputtransformer
  22. Output Transformers for WE-437a WOT Line Preamp
  23. plate resistor, input lead
  24. KT88 PP with Class-A/Class-AB switch
  25. very loud preamp
  26. Pentode current sink
  27. Hammond vs. James?
  28. Tubes for Scott Nixon dac
  29. James SE OPT for 300B & 2A3 on eBay
  30. pre-amp with 6as7??
  31. pre-amp with voltage gain from transformer only
  32. Help! Mystery tube (?) amp (type: HK56)
  33. Regulate the high voltage making better sound? (Preamp)
  34. Power Transformer
  35. Potentiometers UK
  36. AC 120V, neutral, hot, ground
  37. Counterpoint SA-220 Tube section advice needed
  38. 807 Amp
  39. Help me to choose the adequate ferrites
  40. Looking for KT88 circuits.
  41. Building a power amp - help
  42. Sovtek EL34WXT.
  43. Microphonic
  44. preamp gain and output transformer question
  45. Would an s5 K-12M kit suffice?
  46. 6c45 and passive volume control?
  47. Something of Interest to Newbies
  48. Fender Output transformer as an audio amp part
  49. Chinese Tube Amp & DIY .. Pro & Con
  50. Franks Ultimate Preamp....
  51. Interstage Transformer Nomenclature
  52. PP or SE for Horns?
  53. Output transformer in SIMetrix?
  54. seampcad
  55. Looking for an amp project
  56. Unison Research Smart 845 schematics
  57. HELP - From the audiophile Heads - Amp Advice
  58. 8233, 8116 & 6BZ6 valves - what are they good for?
  59. wires of output transformer are too thin!
  60. Reichert Feral Eye
  61. BIG LOUD SCREECH on LEFT channel only
  62. humming from volume
  63. Paia TubeHead and Symmetry Trims
  64. Output trafo for WE-91 L'Audiophile amp?
  65. Transformer voltage too high for 300B amp
  66. More shopping help please - GE Combo 330
  67. Bias filtering
  68. PP pentode screen supply
  69. 6v6 and OPT with 10-12k ohm(primary impedence)
  70. Identity Help - Is it worth working on
  71. Need info about 5G84 tube
  72. RF Noise in Power Supply
  73. My audionote Kit one have problem on 300B cathode terminal
  74. Partial Feedback Amplifiers
  75. filament transformer vs plate transformer
  76. Any subs for 6N1 & 6N2 twin triode valves?
  77. PSU questions
  78. Any designs for 6EJ7 out there?
  79. SRPP headphoneamp with E88CC
  80. newbie to DIY
  81. Just bought a leak stereo 20 (pics!)
  82. Mysterious Output Transformer....
  83. Hum free 5687 AC filament supply, is it possable ?
  84. Will This Preamp Work
  85. help with input pot on el84 PP amp
  86. NOS Philmore Output Transformern or Modern
  87. tube amp
  88. power supply, Help please!!!
  89. Tubes and magnetic fields
  90. Driver tube for 45 interstage 1:1
  91. 89 db is it enough ?
  92. Troubl-shooting heater voltage for filament
  93. arcing in rectifier tube
  94. 1/8" Aluminum for top plate?
  95. Shopping list
  96. 6sn7 valves
  97. Neon flashes with the music
  98. Help in SE 807 amp
  99. naim user defects to valves !
  100. tamura opt need help
  101. Line stage question
  102. Tube question, how to read the difference.
  103. What Tube amp for Biginner?
  104. Leak Stereo 20 rebuild/restore question
  105. Is there any advantage in using preamp tubes in output stages ??
  106. 12b4 as PP output tubes
  107. Valves stripped bare….
  108. Anybody know this TUBE?
  109. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  110. Need help understanding something about UL stages
  111. I'd like to make a simple 50 amplifier
  112. gates tube pre-amp info??
  113. OT - To those who correspond with me....
  114. Could use info on Grommes + knight.
  115. Single Ended Ultra linear, anyone built one?
  116. Audio Innovations 800 Anniversary problem
  117. Transformer coupled 6SN7 push-pull DAC output stage?
  118. Vkh max voltage
  119. Mosfet differences with valves
  120. Need schematic - Audio Research LS2B MKII
  121. EL84M specs.
  122. What to do with these?
  123. Dyna Mk IV Driver Boards
  124. OTL driving series arrays
  125. Voltage problem
  126. Amp intermittently blowing fuse at power up
  127. Worlds Best Preamp
  128. Heathkit TT-1A Calibration
  129. surplus 12ax7a
  130. Phase Splitter as input stage
  131. DHT DC heater question
  132. Wanted-Assembly manual for Scott LK-150
  133. Happy new year, sophielove.
  134. Need UTC PVM-3 primary ?
  135. power amp for small studio
  136. Preamp
  137. Problems with EICO HF-12 amp.
  138. Technics SU-30A's schema???
  139. Tube PWM driver
  140. Tungsram tube data
  141. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  142. sharp cutoff pentode
  143. JJ E34L failure(s)
  144. Valve effects loop
  145. Bruce Moore "Companion" - Schematic
  146. CT impedence mismatch?
  147. Tube multiplex adapter parts replacement
  148. SY gets jiggy (5692 measurements)
  149. Tube Drag Racing!
  150. OTL, quick `n dirty
  151. 6V6 stereo amp
  152. humming from amplifier
  153. Mesa boogie
  154. Any tube audiophile in New Dephli, India
  155. What are terminal 1 & 4 of 300B tube
  156. Tube Nube - need advice on Scott LK150
  157. Pentode AB1 or AB2?
  158. #56 tube line stage
  159. **** another unusual hum problem !!
  160. Any comments on Eico HF-14 and HF-85
  161. sensitivities of amplifier configurations
  162. Building a Sun Audio sv 300b Mk II clone
  163. wanted information! vellman vaa-70 tube amp
  164. old tubes, what to do?
  165. Knowledge needed. Need answer to basic yet puzzling question.
  166. tubes 5965A and 5814A
  167. 6s4a as driver for 6as7 in SEAmp
  168. Tube Manufactures Cross references
  169. KT88 vs. KT90 bench test
  170. Variable Voltage Technology(uk) iron
  171. Tutorial: building techniques
  172. Anyone tried UL or Triode connecting the $140 kit ?
  173. Using microphone transformers as phase splitters .
  174. Tube Cooling Recommendations
  175. WE 300B Vs &&&&
  176. Line stage board off from overseas. problems
  177. Volume control for tube amplifier ??
  178. Mro Pt8
  179. looking for se 811 schematics
  180. 6ar5??
  181. bias meter
  182. 829B/3E29 datasheet triodemode
  183. A better triode strap?
  184. outputtransformer data needed
  185. info wanted about a output transformer
  186. WE316a/VT191 triode
  187. electrolytic can capacitor
  188. Bogen DS-225
  189. PPP KT66, Jensen P15N, Hammond PowTran 378CX/193L Choke
  190. 6V6GT and 6L6GT
  191. Unknown vaccumtubes
  192. Milleroux OPT
  193. Tube equalents.
  194. Western Electric 300B
  195. AVVT Tubes
  196. PAS phono. (curcio)
  197. Suitable Transformer for Etude 12B4A
  198. SE tube in mono amp
  199. Pentode current sink - how to connect the control grid?
  200. where are audio equipments in Beijing?
  201. Mullard 3-3 Question
  202. Grounded Grid w/ remote volume
  203. Modifying (Reducing) Screen Voltage
  204. coupling caps
  205. Single Stage Inverting or no?
  206. Using KT88 to build a monster champ amp?
  207. bias arrangements for P-P amps.
  208. Beginner's heaphone amp?
  209. Bridging
  210. Valve circuit in I, Robot
  211. ECC33, 34, 35 tubes?
  212. Help!! any good EL3n Push Pull circuits????
  213. What PP circuit to use for 6SN7 and 2a3?
  214. Stage classification and efficiency
  215. 2x8w SET choice.
  216. 10-15 mu DHT?
  217. Possible computer speaker amp
  218. Help me make a preamp decision
  219. Plitron PAT4006 - advice please
  220. Big valve
  221. Need help with PP pentode design
  222. EQ-circuits.
  223. measuring the power choke inductance confusion
  224. Single-end... which tube?
  225. bias voltage for 6BQ5 plate
  226. Fender Twin
  227. small poweramp with 12AH7 and 6AU6WA...
  228. Layout Check
  229. auto component placer with tube PCB prints
  230. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  231. Audio Electronics Supply AE-1 problems
  232. Cunningham CX 301A
  233. Quicksilver zener diode mod
  234. ELC7? I need help to identify this valve
  235. Spice 3f4 "Koren" models
  236. parallel or push-pull
  237. Isolation
  238. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  239. Magic Gu15
  240. Help identifing RCA transformer
  241. Problem with tube overheating. PLEASE HELP
  242. Battery powered phono.
  243. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  244. converting Heathkit AA-191 to a guitar amp
  245. Has anyone used a triode as a shunt regulator?
  246. EL84 SE design recommendations?
  247. need a good low parts phono tube preamp schematic....
  248. Shunt Feedback - effect on input impedance
  249. searching bogen db10a schematic
  250. Swinging choke?

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