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  1. humming from volume
  2. Paia TubeHead and Symmetry Trims
  3. Output trafo for WE-91 L'Audiophile amp?
  4. Transformer voltage too high for 300B amp
  5. More shopping help please - GE Combo 330
  6. Bias filtering
  7. PP pentode screen supply
  8. 6v6 and OPT with 10-12k ohm(primary impedence)
  9. Identity Help - Is it worth working on
  10. Need info about 5G84 tube
  11. RF Noise in Power Supply
  12. My audionote Kit one have problem on 300B cathode terminal
  13. Partial Feedback Amplifiers
  14. filament transformer vs plate transformer
  15. Any subs for 6N1 & 6N2 twin triode valves?
  16. PSU questions
  17. Any designs for 6EJ7 out there?
  18. SRPP headphoneamp with E88CC
  19. newbie to DIY
  20. Just bought a leak stereo 20 (pics!)
  21. Mysterious Output Transformer....
  22. Hum free 5687 AC filament supply, is it possable ?
  23. Will This Preamp Work
  24. help with input pot on el84 PP amp
  25. NOS Philmore Output Transformern or Modern
  26. tube amp
  27. power supply, Help please!!!
  28. Tubes and magnetic fields
  29. Driver tube for 45 interstage 1:1
  30. 89 db is it enough ?
  31. Troubl-shooting heater voltage for filament
  32. arcing in rectifier tube
  33. 1/8" Aluminum for top plate?
  34. Shopping list
  35. 6sn7 valves
  36. Neon flashes with the music
  37. Help in SE 807 amp
  38. naim user defects to valves !
  39. tamura opt need help
  40. Line stage question
  41. Tube question, how to read the difference.
  42. What Tube amp for Biginner?
  43. Leak Stereo 20 rebuild/restore question
  44. Is there any advantage in using preamp tubes in output stages ??
  45. 12b4 as PP output tubes
  46. Valves stripped bare….
  47. Anybody know this TUBE?
  48. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  49. Need help understanding something about UL stages
  50. I'd like to make a simple 50 amplifier
  51. gates tube pre-amp info??
  52. OT - To those who correspond with me....
  53. Could use info on Grommes + knight.
  54. Single Ended Ultra linear, anyone built one?
  55. Audio Innovations 800 Anniversary problem
  56. Transformer coupled 6SN7 push-pull DAC output stage?
  57. Vkh max voltage
  58. Mosfet differences with valves
  59. Need schematic - Audio Research LS2B MKII
  60. EL84M specs.
  61. What to do with these?
  62. Dyna Mk IV Driver Boards
  63. OTL driving series arrays
  64. Voltage problem
  65. Amp intermittently blowing fuse at power up
  66. Worlds Best Preamp
  67. Heathkit TT-1A Calibration
  68. surplus 12ax7a
  69. Phase Splitter as input stage
  70. DHT DC heater question
  71. Wanted-Assembly manual for Scott LK-150
  72. Happy new year, sophielove.
  73. Need UTC PVM-3 primary ?
  74. power amp for small studio
  75. Preamp
  76. Problems with EICO HF-12 amp.
  77. Technics SU-30A's schema???
  78. Tube PWM driver
  79. Tungsram tube data
  80. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  81. sharp cutoff pentode
  82. JJ E34L failure(s)
  83. Valve effects loop
  84. Bruce Moore "Companion" - Schematic
  85. CT impedence mismatch?
  86. Tube multiplex adapter parts replacement
  87. SY gets jiggy (5692 measurements)
  88. Tube Drag Racing!
  89. OTL, quick `n dirty
  90. 6V6 stereo amp
  91. humming from amplifier
  92. Mesa boogie
  93. Any tube audiophile in New Dephli, India
  94. What are terminal 1 & 4 of 300B tube
  95. Tube Nube - need advice on Scott LK150
  96. Pentode AB1 or AB2?
  97. #56 tube line stage
  98. **** another unusual hum problem !!
  99. Any comments on Eico HF-14 and HF-85
  100. sensitivities of amplifier configurations
  101. Building a Sun Audio sv 300b Mk II clone
  102. wanted information! vellman vaa-70 tube amp
  103. old tubes, what to do?
  104. Knowledge needed. Need answer to basic yet puzzling question.
  105. tubes 5965A and 5814A
  106. 6s4a as driver for 6as7 in SEAmp
  107. Tube Manufactures Cross references
  108. KT88 vs. KT90 bench test
  109. Variable Voltage Technology(uk) iron
  110. Tutorial: building techniques
  111. Anyone tried UL or Triode connecting the $140 kit ?
  112. Using microphone transformers as phase splitters .
  113. Tube Cooling Recommendations
  114. WE 300B Vs &&&&
  115. Line stage board off from overseas. problems
  116. Volume control for tube amplifier ??
  117. Mro Pt8
  118. looking for se 811 schematics
  119. 6ar5??
  120. bias meter
  121. 829B/3E29 datasheet triodemode
  122. A better triode strap?
  123. outputtransformer data needed
  124. info wanted about a output transformer
  125. WE316a/VT191 triode
  126. electrolytic can capacitor
  127. Bogen DS-225
  128. PPP KT66, Jensen P15N, Hammond PowTran 378CX/193L Choke
  129. 6V6GT and 6L6GT
  130. Unknown vaccumtubes
  131. Milleroux OPT
  132. Tube equalents.
  133. Western Electric 300B
  134. AVVT Tubes
  135. PAS phono. (curcio)
  136. Suitable Transformer for Etude 12B4A
  137. SE tube in mono amp
  138. Pentode current sink - how to connect the control grid?
  139. where are audio equipments in Beijing?
  140. Mullard 3-3 Question
  141. Grounded Grid w/ remote volume
  142. Modifying (Reducing) Screen Voltage
  143. coupling caps
  144. Single Stage Inverting or no?
  145. Using KT88 to build a monster champ amp?
  146. bias arrangements for P-P amps.
  147. Beginner's heaphone amp?
  148. Bridging
  149. Valve circuit in I, Robot
  150. ECC33, 34, 35 tubes?
  151. Help!! any good EL3n Push Pull circuits????
  152. What PP circuit to use for 6SN7 and 2a3?
  153. Stage classification and efficiency
  154. 2x8w SET choice.
  155. 10-15 mu DHT?
  156. Possible computer speaker amp
  157. Help me make a preamp decision
  158. Plitron PAT4006 - advice please
  159. Big valve
  160. Need help with PP pentode design
  161. EQ-circuits.
  162. measuring the power choke inductance confusion
  163. Single-end... which tube?
  164. bias voltage for 6BQ5 plate
  165. Fender Twin
  166. small poweramp with 12AH7 and 6AU6WA...
  167. Layout Check
  168. auto component placer with tube PCB prints
  169. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  170. Audio Electronics Supply AE-1 problems
  171. Cunningham CX 301A
  172. Quicksilver zener diode mod
  173. ELC7? I need help to identify this valve
  174. Spice 3f4 "Koren" models
  175. parallel or push-pull
  176. Isolation
  177. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  178. Magic Gu15
  179. Help identifing RCA transformer
  180. Problem with tube overheating. PLEASE HELP
  181. Battery powered phono.
  182. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  183. converting Heathkit AA-191 to a guitar amp
  184. Has anyone used a triode as a shunt regulator?
  185. EL84 SE design recommendations?
  186. need a good low parts phono tube preamp schematic....
  187. Shunt Feedback - effect on input impedance
  188. searching bogen db10a schematic
  189. Swinging choke?
  190. Schematic help. (thread split)
  191. Playing with a Magic Eye.
  192. A music coming from component.
  193. DIY meeting in Belgium ?
  194. EL34 Push Pull weirdness
  195. Balancing DC-coupled differential stages
  196. Jadis JPS 2 schematic
  197. Leak Stereo20 rebuild ?
  198. Vintage amp rebuild advice
  199. simple 6v6 push-pull schematic ?
  200. valve newbie; 6H1H pre-amp.
  201. Polyprops as cathode bypass
  202. Eventual 300B advice welcome!
  203. Thinking about getting into Tubes, any kit recommendations?
  204. Another Mullard 5-20.
  205. Subbing EL86 (6CW5) for EL84
  206. Valve Warmer/Distortion PCB
  207. Having a problem with building this 6C45 PP amp.
  208. Blue glow in tube. Is the tube dead or not?
  209. Repairing VTL TL2.5
  210. Another ECL86 (integrated this time)
  211. CJ MV55 triode mode
  212. Mullard 20W Amp
  213. Pro Model Tubes,for example Avalon
  214. How to find out which is which????
  215. Matching a preamp to high output impedance source
  216. VSE PP1 driver stage
  217. Thordarson Choke type 1-8C42
  218. Ediswan ECL86 datasheet wanted.
  219. Minimal approach with hybrid rectification: Is this possible?
  220. SS vs. Tube Rectification (and chokes)?
  221. Biasing a guitar amp for distortion
  222. Help wanted on SRPP preamp
  223. New Pas Question no photos
  224. amp-schematic questions...
  225. 5902 subminiature audio pentode
  226. TPP versus PSE.
  227. my fun....
  228. Schematic for Siemens F2a tube amp
  229. Snubber
  230. Which preamp ?
  231. Distortion+low volume..
  232. JJ Tesla
  233. Dynaco Pas
  234. feedback resistor
  235. Grid stoppers?
  236. Transcendent T8 with 12 output tubes
  237. Can anyone recommend a good buffer circuit
  238. happy with my MC-25
  239. A building block approach to valve amp design
  240. math quiz- input z triode amp
  241. Need help in circuit analysis
  242. learning how to do this
  243. 5687 and ccs?
  244. Improving damping factor for OTL
  245. Solid State delay on turn on relay.
  246. output transformer 9030/3
  247. Dynaco MKIII: new power cord
  248. 50C5 add-on amp
  249. Finished my stereo amp!!
  250. spl for 300b, kt88

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