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  1. Heater Transformer - too much voltage
  2. Capacitor value
  3. WD KT88
  4. Ultimate spud amp - any ideas ?
  5. Please Critique My Grounding Scheme
  6. negative voltage drop across a diode
  7. 1.5K 200W output transformers? What tubes?
  8. 50 Type Tube
  9. "12SR7 Starving Student" plays extremly quiet
  10. questions about some sim software
  11. Drive
  12. 4xKT88 into Hammond 1650T, what am I missing?
  13. double mono SE
  14. Two electrolytic cap selection questions
  15. Could This Be the Future of Vacuum Tubes?
  16. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  17. Rydel's triode model coefficients
  18. 2E26 Options
  19. Loud Popping Dynaco ST-70
  20. Are these EL34's good?
  21. Amp schematic for Sovtek/Svetlana tubes
  22. KT66 power tube amplifier
  23. 6П3С Plate Voltage
  24. Help choosing which Amplifier to build
  25. need help choosing between two amp schems
  26. 100 W-class Circlotron
  27. How can i match power tubes for Transconductance ?
  28. ef89 ef86
  29. ecc82 5687 preamp! audionote
  30. Hammond transformer questions
  31. IXYS CP20M45 IXC - anyone come across them ?
  32. Good Source for Nice Analog Panel Ammeters for 833C Build?
  33. Restore or build from new?
  34. Bob Danielak 826 Amp?
  35. Newbie Tube Power Supply
  36. What shall I build/do with this lot of tubes?
  37. Gingertubes ecl86 amp build
  38. DC restorer
  39. ECF801 Triode/Pentode any useful application ?
  40. Baking Tubes Procedure - Help...
  41. AVO VCM-163 Tube tester problem
  42. ECC82 normal vs ECC82 long plate
  43. 45 Type Push/Pull Amps
  44. leak tl12+
  45. Triode for 60V
  46. Tube Sound Processor
  47. McIntosh MC-275 buy or build an auto-bias tube amp?
  48. slp-90 clone, decent preamp!
  49. Triode St70 with hum
  50. SSR switching HT transformer?
  51. Tube Flash Drive
  52. 6S31B-P Grid current
  53. Tube Op Amp Building Blocks
  54. knight kb-85 restoration/mod
  55. Acceptable Power Supply Noise Limits?
  56. Loadlines and Microsoft Paint
  57. aikido noval all in one caps upgrade
  58. Specific grid stopper question
  59. GU50 Screen Driven, DC Coupled
  60. April fool?
  61. Providing both balanced and unbalanced inputs
  62. Best triode section inside ecc81 tube?
  63. opt for 45 tube
  64. Designing an Interstage Transformer
  65. Tube Amplifier Builder's Competition
  66. testing tubes for shorts
  67. Tube kits
  68. GU29 PP Amplifier
  69. 1625 tube radio?
  70. Measuring volts on an unloaded PSU secondary
  71. Suggest a preamp project for me.
  72. Audio Magazine
  73. Jadis DA88S schematic
  74. clone jadis jp200 preamp
  75. GROMMES LJ5
  76. Altec 1570B Feedback
  77. rebuilding 3tube zenith amp
  78. Effect of lower G2, EL84 PP
  79. Phono connection for pioneer sx34b
  80. Low output from two 6L6's for no apparent reason?
  81. Preamp design ok?
  82. GZ34 base?
  83. Tube Technology Genesis 100w monoblock manual?
  84. 6SN7 & 6V6 Push Pull - increase gain
  85. screen grid resistor value
  86. KT88 design questions
  87. el84/12ax7 se schematic needed!
  88. Broken AMC CVT 2100
  89. 98dB speaker - El Cheapo
  90. consolidated raw tube data
  91. Loadlines for Parallel SE outputs
  92. What is the correct load for an 845 triode?
  93. Rauland W-835A amplifier, choke field coil output?
  94. First use for Trancendent Sound Tube Analyzer
  95. Schematics/vintage
  96. APPJ PA0901A / Miniwatt N3 schematics
  97. APPJ PA0901A() schematics
  98. Help Needed: Lower Gain on a Tube Amp?
  99. Help: Hickok Western Electric KS-15750 Calibration
  100. Mullard ecc82 12au7 code help
  101. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  102. ST-70 Power Transformer
  103. Help Identifying a Tube - Westinghouse 12AX7A
  104. An incredible collection!
  105. Using only half of a stereo PP amp
  106. Alternate Electrolytic Caps for SimpleSE (and others)
  107. Low voltage vs. High Voltage Preamp.
  108. 6J6 Headphone hybrid amplifer?
  109. Hybrid headphone amp.....
  110. Please help with hum problem..
  111. Dead Audio Innovations Series 500
  112. Problems with E88CC / 6922 drawing grid current on power-up
  113. H.J.Leak TL12 "point one"
  114. Tubecad hybrird feedforward feedback shunt regulator
  115. 6v6 SE kit - any good?
  116. DBX 576 complete upgrade. Advices?
  117. help !! 45 tube
  118. 6P45S PP, simulation frustration.
  119. AMC CVT 3030 one more try - or dumpster
  120. Help for 211 HV PSU with damper diodes
  121. Flexible supply idea
  122. what range speaker used 2x 18watt or 2x 10 watt on 18 watts amp
  123. Equalizer on EL84 project
  124. parallel single-ended 12W6
  125. help improving/refurb a Fisher k-10 Tube spring reverb
  126. S.E.X. amp + Impedance switch build problems.
  127. problem with speaker
  128. EC80 as preamp tube.
  129. 6CJ3 Rectifier Connection Question ?
  130. AC Filament Voltage Question ?
  131. My new GU50 SE (all pentode)
  132. Ming Da MC-3R Schematics
  133. 12B4 PSE build thread
  134. Looking for options for 4 volt heater
  135. Help me,Art Audio Concerto
  136. heathkit t3 12sh7 tube
  137. PSU dimensioning for pre-amp
  138. Old ceramic dogbone capacitor color codes
  139. Williamson preamp identification help wanted
  140. Adequate switch for UL-triode-pentode
  141. pl500 based integrated OTL amplifier
  142. Capacitor dielectric - high impedance headphones
  143. REQUEST FOR OPINIONS
  144. Mysterious LCR phono preamp
  145. Eimac 100TL Output Transformers and Bias Point ?
  146. Tube deterioration
  147. Heathkit XO-1 power cords
  148. EF86 Push-Pull "power"-amp
  149. Transformers!?
  150. Weird ground loop problem
  151. Re-caping Cayin A70-T
  152. A3 attenuator help for an Aikido line amp
  153. Driver Tube Power Supply Question ?
  154. Line Stage vs. Phase Inverter - 12A*7
  155. Intermittent Buzz Decware Zen SE84Bged
  156. Tamura F2011/el34 x 4
  157. E88CC/6922 battery supply
  158. Aikido 9-pin all-in-1 headphone amp problem
  159. Filament Transformer Question ?
  160. Load Resistance, etc., chart for Class A push pull 6L6s?
  161. Question about preamp, boost and line-stage
  162. help please
  163. Practical phase inverter article
  164. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  165. Rio W-41 no sound
  166. Help: TDA1541A DAC Output To Tube Gainstage
  167. Pieter's take on an all DHT headphone amplifier.
  168. toroidal chokes
  169. Truly Silly Transformer Question
  170. Elementary resistance question
  171. Russian 310A + 300B
  172. 1959 RCA tube amplifier needs help
  173. What's going on?
  174. Aikido 9-pin All-in-one Testing question
  175. Gyrator in Tail of LTP
  176. tubemaster EL84
  177. Silly transformer question
  178. Marant 8b bias meter
  179. ElectroTone OrganMate spring reverb - mod suggestions?
  180. Opera Consonance resitor question ?
  181. ADI's Double Dyna
  182. DuMont Stereo Tube Console late 50's - What to do?
  183. No Sound from Magnavox EL 1484-1 amp/phono
  184. Elevated Heater Question
  185. 6P45S/EL509 input capacitance in triode mode
  186. 6E6p-e Little Tiny Wire
  187. another aikido ?
  188. NOS 6P3S-e or cheap new 5881? Identify this tube..
  189. Contan Audio from Melbourne Aus, any info?
  190. Loctal Base Post
  191. Timber amp with solid copper plate as earth and ground plane
  192. Dynaco ST70 - Which tubes do you like?
  193. 6SL7 in parallel driving 6550
  194. Will this work as a heater for 300b?
  195. Tube grid resistance for 6P45S, fine?
  196. Akido help pls
  197. BEARD P101 information
  198. Got some 6n3c-e (6p3s-e)with blank bulb?
  199. Graaf GM-20
  200. medium power OTL circlotron amplifier
  201. Help me identity this amp
  202. Hajdinjak preamp + 2x mono tube amp -What to do?
  203. Moscode 600 Noisy Fan
  204. component reduction in signal chain
  205. Aikido with Stax
  206. 'High power' shunt regulator
  207. Help need on Xindak XA3200MII hybrid pre-amplifier
  208. ideas for tube burn in / bias match station
  209. KT120 triode operation single stage amp
  210. Question regarding 7199 Tube wiring
  211. Why do modern PP OPTs have 16 Ohm taps?
  212. 10M45 current source
  213. 12bh7 in place of ecc82
  214. High voltage winding no center tap?
  215. Marantz 8b recap
  216. Pair Quad II in all original condition... restore or sell
  217. Where to find tube designers for hire?
  218. 10M45S problem
  219. 300B Load Line and Bias?
  220. Looking for little help with Glassware Janus shunt reg
  221. Quick question about grounding
  222. Source for 6jg5 or equivalent in Europe
  223. Need your help: Change from el34 to 6550 ends in a desaster
  224. conn el 6026 tube amp schematic for hifi stereo
  225. GE 211 "flash" question
  226. Learned something (the hard way) about mica capacitors
  227. Aikido octal floating output
  228. Screened cable for rewiring valve amp
  229. Fault developed, producing static noise
  230. Tubelab SE buzz and crackle
  231. EL34+Ecc83 amp hum
  232. Gold plated Dynaco ST-70 for $3k
  233. Preamp noise level ?
  234. KOSS A1220 - Vintage Tube Headphone Amp - Diagnose and Mod questions...
  235. Rectifier tube cathode and heater
  236. testing voltage on tube filament, without the tube
  237. New semi-custom metal chassis manufacturer
  238. 55 WPC 1625 Mono Block Amps
  239. Masco C-10 Mic/Phono Amp
  240. New driver stage for dynaco mk3
  241. Power Transformer Issue
  242. Marantz 8B
  243. Safety questions
  244. Step Attenuator
  245. amplifier output impedance measurement
  246. Regulated Vs Non-regulated linear Power Supply
  247. Single RIAA passive eq design for differential DC coupled tube circuit
  248. Amp to Drive Lowther DX3's in Rear Loaded Horn
  249. Anyone know what's going on with Antek?
  250. Sources of 120hz hum?

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