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  1. Bevois Valley EL84 PP - distortion in one channel
  2. good by til next winter
  3. PSUD Questions
  4. Power Transformer Wiring Question ?
  5. Fisher 500C C82/C84 ceramic capacitor function
  6. Tubes to first taker
  7. Neutral wired to chassis, how to add a 3-prong cord?
  8. Heater Transformer - too much voltage
  9. Capacitor value
  10. WD KT88
  11. Ultimate spud amp - any ideas ?
  12. Please Critique My Grounding Scheme
  13. negative voltage drop across a diode
  14. 1.5K 200W output transformers? What tubes?
  15. 50 Type Tube
  16. "12SR7 Starving Student" plays extremly quiet
  17. questions about some sim software
  18. Drive
  19. 4xKT88 into Hammond 1650T, what am I missing?
  20. double mono SE
  21. Two electrolytic cap selection questions
  22. Could This Be the Future of Vacuum Tubes?
  23. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  24. Rydel's triode model coefficients
  25. 2E26 Options
  26. Loud Popping Dynaco ST-70
  27. Are these EL34's good?
  28. Amp schematic for Sovtek/Svetlana tubes
  29. KT66 power tube amplifier
  30. 6П3С Plate Voltage
  31. Help choosing which Amplifier to build
  32. need help choosing between two amp schems
  33. 100 W-class Circlotron
  34. How can i match power tubes for Transconductance ?
  35. ef89 ef86
  36. ecc82 5687 preamp! audionote
  37. Hammond transformer questions
  38. IXYS CP20M45 IXC - anyone come across them ?
  39. Good Source for Nice Analog Panel Ammeters for 833C Build?
  40. Restore or build from new?
  41. Bob Danielak 826 Amp?
  42. Newbie Tube Power Supply
  43. What shall I build/do with this lot of tubes?
  44. Gingertubes ecl86 amp build
  45. DC restorer
  46. ECF801 Triode/Pentode any useful application ?
  47. Baking Tubes Procedure - Help...
  48. AVO VCM-163 Tube tester problem
  49. ECC82 normal vs ECC82 long plate
  50. 45 Type Push/Pull Amps
  51. leak tl12+
  52. Triode for 60V
  53. Tube Sound Processor
  54. McIntosh MC-275 buy or build an auto-bias tube amp?
  55. slp-90 clone, decent preamp!
  56. Triode St70 with hum
  57. SSR switching HT transformer?
  58. Tube Flash Drive
  59. 6S31B-P Grid current
  60. Tube Op Amp Building Blocks
  61. knight kb-85 restoration/mod
  62. Acceptable Power Supply Noise Limits?
  63. Loadlines and Microsoft Paint
  64. aikido noval all in one caps upgrade
  65. Specific grid stopper question
  66. GU50 Screen Driven, DC Coupled
  67. April fool?
  68. Providing both balanced and unbalanced inputs
  69. Best triode section inside ecc81 tube?
  70. opt for 45 tube
  71. Designing an Interstage Transformer
  72. Tube Amplifier Builder's Competition
  73. testing tubes for shorts
  74. Tube kits
  75. GU29 PP Amplifier
  76. 1625 tube radio?
  77. Measuring volts on an unloaded PSU secondary
  78. Suggest a preamp project for me.
  79. Audio Magazine
  80. Jadis DA88S schematic
  81. clone jadis jp200 preamp
  82. GROMMES LJ5
  83. Altec 1570B Feedback
  84. rebuilding 3tube zenith amp
  85. Effect of lower G2, EL84 PP
  86. Phono connection for pioneer sx34b
  87. Low output from two 6L6's for no apparent reason?
  88. Preamp design ok?
  89. GZ34 base?
  90. Tube Technology Genesis 100w monoblock manual?
  91. 6SN7 & 6V6 Push Pull - increase gain
  92. screen grid resistor value
  93. KT88 design questions
  94. el84/12ax7 se schematic needed!
  95. Broken AMC CVT 2100
  96. 98dB speaker - El Cheapo
  97. consolidated raw tube data
  98. Loadlines for Parallel SE outputs
  99. What is the correct load for an 845 triode?
  100. Rauland W-835A amplifier, choke field coil output?
  101. First use for Trancendent Sound Tube Analyzer
  102. Schematics/vintage
  103. APPJ PA0901A / Miniwatt N3 schematics
  104. APPJ PA0901A() schematics
  105. Help Needed: Lower Gain on a Tube Amp?
  106. Help: Hickok Western Electric KS-15750 Calibration
  107. Mullard ecc82 12au7 code help
  108. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  109. ST-70 Power Transformer
  110. Help Identifying a Tube - Westinghouse 12AX7A
  111. An incredible collection!
  112. Using only half of a stereo PP amp
  113. Alternate Electrolytic Caps for SimpleSE (and others)
  114. Low voltage vs. High Voltage Preamp.
  115. 6J6 Headphone hybrid amplifer?
  116. Hybrid headphone amp.....
  117. Please help with hum problem..
  118. Dead Audio Innovations Series 500
  119. Problems with E88CC / 6922 drawing grid current on power-up
  120. H.J.Leak TL12 "point one"
  121. Tubecad hybrird feedforward feedback shunt regulator
  122. 6v6 SE kit - any good?
  123. DBX 576 complete upgrade. Advices?
  124. help !! 45 tube
  125. 6P45S PP, simulation frustration.
  126. AMC CVT 3030 one more try - or dumpster
  127. Help for 211 HV PSU with damper diodes
  128. Flexible supply idea
  129. what range speaker used 2x 18watt or 2x 10 watt on 18 watts amp
  130. Equalizer on EL84 project
  131. parallel single-ended 12W6
  132. help improving/refurb a Fisher k-10 Tube spring reverb
  133. S.E.X. amp + Impedance switch build problems.
  134. problem with speaker
  135. EC80 as preamp tube.
  136. 6CJ3 Rectifier Connection Question ?
  137. AC Filament Voltage Question ?
  138. My new GU50 SE (all pentode)
  139. Ming Da MC-3R Schematics
  140. 12B4 PSE build thread
  141. Looking for options for 4 volt heater
  142. Help me,Art Audio Concerto
  143. heathkit t3 12sh7 tube
  144. PSU dimensioning for pre-amp
  145. Old ceramic dogbone capacitor color codes
  146. Williamson preamp identification help wanted
  147. Adequate switch for UL-triode-pentode
  148. pl500 based integrated OTL amplifier
  149. Capacitor dielectric - high impedance headphones
  150. REQUEST FOR OPINIONS
  151. Mysterious LCR phono preamp
  152. Eimac 100TL Output Transformers and Bias Point ?
  153. Tube deterioration
  154. Heathkit XO-1 power cords
  155. EF86 Push-Pull "power"-amp
  156. Transformers!?
  157. Weird ground loop problem
  158. Re-caping Cayin A70-T
  159. A3 attenuator help for an Aikido line amp
  160. Driver Tube Power Supply Question ?
  161. Line Stage vs. Phase Inverter - 12A*7
  162. Intermittent Buzz Decware Zen SE84Bged
  163. Tamura F2011/el34 x 4
  164. E88CC/6922 battery supply
  165. Aikido 9-pin all-in-1 headphone amp problem
  166. Filament Transformer Question ?
  167. Load Resistance, etc., chart for Class A push pull 6L6s?
  168. Question about preamp, boost and line-stage
  169. help please
  170. Practical phase inverter article
  171. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  172. Rio W-41 no sound
  173. Help: TDA1541A DAC Output To Tube Gainstage
  174. Pieter's take on an all DHT headphone amplifier.
  175. toroidal chokes
  176. Truly Silly Transformer Question
  177. Elementary resistance question
  178. Russian 310A + 300B
  179. 1959 RCA tube amplifier needs help
  180. What's going on?
  181. Aikido 9-pin All-in-one Testing question
  182. Gyrator in Tail of LTP
  183. tubemaster EL84
  184. Silly transformer question
  185. Marant 8b bias meter
  186. ElectroTone OrganMate spring reverb - mod suggestions?
  187. Opera Consonance resitor question ?
  188. ADI's Double Dyna
  189. DuMont Stereo Tube Console late 50's - What to do?
  190. No Sound from Magnavox EL 1484-1 amp/phono
  191. Elevated Heater Question
  192. 6P45S/EL509 input capacitance in triode mode
  193. 6E6p-e Little Tiny Wire
  194. another aikido ?
  195. NOS 6P3S-e or cheap new 5881? Identify this tube..
  196. Contan Audio from Melbourne Aus, any info?
  197. Loctal Base Post
  198. Timber amp with solid copper plate as earth and ground plane
  199. Dynaco ST70 - Which tubes do you like?
  200. 6SL7 in parallel driving 6550
  201. Will this work as a heater for 300b?
  202. Tube grid resistance for 6P45S, fine?
  203. Akido help pls
  204. BEARD P101 information
  205. Got some 6n3c-e (6p3s-e)with blank bulb?
  206. Graaf GM-20
  207. medium power OTL circlotron amplifier
  208. Help me identity this amp
  209. Hajdinjak preamp + 2x mono tube amp -What to do?
  210. Moscode 600 Noisy Fan
  211. component reduction in signal chain
  212. Aikido with Stax
  213. 'High power' shunt regulator
  214. Help need on Xindak XA3200MII hybrid pre-amplifier
  215. ideas for tube burn in / bias match station
  216. KT120 triode operation single stage amp
  217. Question regarding 7199 Tube wiring
  218. Why do modern PP OPTs have 16 Ohm taps?
  219. 10M45 current source
  220. 12bh7 in place of ecc82
  221. High voltage winding no center tap?
  222. Marantz 8b recap
  223. Pair Quad II in all original condition... restore or sell
  224. Where to find tube designers for hire?
  225. 10M45S problem
  226. 300B Load Line and Bias?
  227. Looking for little help with Glassware Janus shunt reg
  228. Quick question about grounding
  229. Source for 6jg5 or equivalent in Europe
  230. Need your help: Change from el34 to 6550 ends in a desaster
  231. conn el 6026 tube amp schematic for hifi stereo
  232. GE 211 "flash" question
  233. Learned something (the hard way) about mica capacitors
  234. Aikido octal floating output
  235. Screened cable for rewiring valve amp
  236. Fault developed, producing static noise
  237. Tubelab SE buzz and crackle
  238. EL34+Ecc83 amp hum
  239. Gold plated Dynaco ST-70 for $3k
  240. Preamp noise level ?
  241. KOSS A1220 - Vintage Tube Headphone Amp - Diagnose and Mod questions...
  242. Rectifier tube cathode and heater
  243. testing voltage on tube filament, without the tube
  244. New semi-custom metal chassis manufacturer
  245. 55 WPC 1625 Mono Block Amps
  246. Masco C-10 Mic/Phono Amp
  247. New driver stage for dynaco mk3
  248. Power Transformer Issue
  249. Marantz 8B
  250. Safety questions

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