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  1. tube substitute
  2. Motorcapacitors in high volt. power supplies?
  3. Troughline, Stereo 20, Technics 1200.Unhappy!
  4. Troughline, Stereo 20, Technics 1200.Unhappy!
  5. Volume potentiometer: the best way to do it...
  6. KT120 "triode" and Hammond 1650N
  7. Tubecad SE Amp Cad
  8. 5702wb
  9. Does anyone know of a company that makes circular risers for tubes?
  10. Negative feedback to differential pair driver
  11. 6L6 UL Power
  12. Bench Power Supply: What to look for ? Which one to get ?
  13. Bevois Valley EL84 PP - distortion in one channel
  14. good by til next winter
  15. PSUD Questions
  16. Power Transformer Wiring Question ?
  17. Fisher 500C C82/C84 ceramic capacitor function
  18. Tubes to first taker
  19. Neutral wired to chassis, how to add a 3-prong cord?
  20. Heater Transformer - too much voltage
  21. Capacitor value
  22. WD KT88
  23. Ultimate spud amp - any ideas ?
  24. Please Critique My Grounding Scheme
  25. negative voltage drop across a diode
  26. 1.5K 200W output transformers? What tubes?
  27. 50 Type Tube
  28. "12SR7 Starving Student" plays extremly quiet
  29. questions about some sim software
  30. Drive
  31. 4xKT88 into Hammond 1650T, what am I missing?
  32. double mono SE
  33. Two electrolytic cap selection questions
  34. Could This Be the Future of Vacuum Tubes?
  35. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  36. Rydel's triode model coefficients
  37. 2E26 Options
  38. Loud Popping Dynaco ST-70
  39. Are these EL34's good?
  40. Amp schematic for Sovtek/Svetlana tubes
  41. KT66 power tube amplifier
  42. 6П3С Plate Voltage
  43. Help choosing which Amplifier to build
  44. need help choosing between two amp schems
  45. 100 W-class Circlotron
  46. How can i match power tubes for Transconductance ?
  47. ef89 ef86
  48. ecc82 5687 preamp! audionote
  49. Hammond transformer questions
  50. IXYS CP20M45 IXC - anyone come across them ?
  51. Good Source for Nice Analog Panel Ammeters for 833C Build?
  52. Restore or build from new?
  53. Bob Danielak 826 Amp?
  54. Newbie Tube Power Supply
  55. What shall I build/do with this lot of tubes?
  56. Gingertubes ecl86 amp build
  57. DC restorer
  58. ECF801 Triode/Pentode any useful application ?
  59. Baking Tubes Procedure - Help...
  60. AVO VCM-163 Tube tester problem
  61. ECC82 normal vs ECC82 long plate
  62. 45 Type Push/Pull Amps
  63. leak tl12+
  64. Triode for 60V
  65. Tube Sound Processor
  66. McIntosh MC-275 buy or build an auto-bias tube amp?
  67. slp-90 clone, decent preamp!
  68. Triode St70 with hum
  69. SSR switching HT transformer?
  70. Tube Flash Drive
  71. 6S31B-P Grid current
  72. Tube Op Amp Building Blocks
  73. knight kb-85 restoration/mod
  74. Acceptable Power Supply Noise Limits?
  75. Loadlines and Microsoft Paint
  76. aikido noval all in one caps upgrade
  77. Specific grid stopper question
  78. GU50 Screen Driven, DC Coupled
  79. April fool?
  80. Providing both balanced and unbalanced inputs
  81. Best triode section inside ecc81 tube?
  82. opt for 45 tube
  83. Designing an Interstage Transformer
  84. Tube Amplifier Builder's Competition
  85. testing tubes for shorts
  86. Tube kits
  87. GU29 PP Amplifier
  88. 1625 tube radio?
  89. Measuring volts on an unloaded PSU secondary
  90. Suggest a preamp project for me.
  91. Audio Magazine
  92. Jadis DA88S schematic
  93. clone jadis jp200 preamp
  94. GROMMES LJ5
  95. Altec 1570B Feedback
  96. rebuilding 3tube zenith amp
  97. Effect of lower G2, EL84 PP
  98. Phono connection for pioneer sx34b
  99. Low output from two 6L6's for no apparent reason?
  100. Preamp design ok?
  101. GZ34 base?
  102. Tube Technology Genesis 100w monoblock manual?
  103. 6SN7 & 6V6 Push Pull - increase gain
  104. screen grid resistor value
  105. KT88 design questions
  106. el84/12ax7 se schematic needed!
  107. Broken AMC CVT 2100
  108. 98dB speaker - El Cheapo
  109. consolidated raw tube data
  110. Loadlines for Parallel SE outputs
  111. What is the correct load for an 845 triode?
  112. Rauland W-835A amplifier, choke field coil output?
  113. First use for Trancendent Sound Tube Analyzer
  114. Schematics/vintage
  115. APPJ PA0901A / Miniwatt N3 schematics
  116. APPJ PA0901A() schematics
  117. Help Needed: Lower Gain on a Tube Amp?
  118. Help: Hickok Western Electric KS-15750 Calibration
  119. Mullard ecc82 12au7 code help
  120. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  121. ST-70 Power Transformer
  122. Help Identifying a Tube - Westinghouse 12AX7A
  123. An incredible collection!
  124. Using only half of a stereo PP amp
  125. Alternate Electrolytic Caps for SimpleSE (and others)
  126. Low voltage vs. High Voltage Preamp.
  127. 6J6 Headphone hybrid amplifer?
  128. Hybrid headphone amp.....
  129. Please help with hum problem..
  130. Dead Audio Innovations Series 500
  131. Problems with E88CC / 6922 drawing grid current on power-up
  132. H.J.Leak TL12 "point one"
  133. Tubecad hybrird feedforward feedback shunt regulator
  134. 6v6 SE kit - any good?
  135. DBX 576 complete upgrade. Advices?
  136. help !! 45 tube
  137. 6P45S PP, simulation frustration.
  138. AMC CVT 3030 one more try - or dumpster
  139. Help for 211 HV PSU with damper diodes
  140. Flexible supply idea
  141. what range speaker used 2x 18watt or 2x 10 watt on 18 watts amp
  142. Equalizer on EL84 project
  143. parallel single-ended 12W6
  144. help improving/refurb a Fisher k-10 Tube spring reverb
  145. S.E.X. amp + Impedance switch build problems.
  146. problem with speaker
  147. EC80 as preamp tube.
  148. 6CJ3 Rectifier Connection Question ?
  149. AC Filament Voltage Question ?
  150. My new GU50 SE (all pentode)
  151. Ming Da MC-3R Schematics
  152. 12B4 PSE build thread
  153. Looking for options for 4 volt heater
  154. Help me,Art Audio Concerto
  155. heathkit t3 12sh7 tube
  156. PSU dimensioning for pre-amp
  157. Old ceramic dogbone capacitor color codes
  158. Williamson preamp identification help wanted
  159. Adequate switch for UL-triode-pentode
  160. pl500 based integrated OTL amplifier
  161. Capacitor dielectric - high impedance headphones
  162. REQUEST FOR OPINIONS
  163. Mysterious LCR phono preamp
  164. Eimac 100TL Output Transformers and Bias Point ?
  165. Tube deterioration
  166. Heathkit XO-1 power cords
  167. EF86 Push-Pull "power"-amp
  168. Transformers!?
  169. Weird ground loop problem
  170. Re-caping Cayin A70-T
  171. A3 attenuator help for an Aikido line amp
  172. Driver Tube Power Supply Question ?
  173. Line Stage vs. Phase Inverter - 12A*7
  174. Intermittent Buzz Decware Zen SE84Bged
  175. Tamura F2011/el34 x 4
  176. E88CC/6922 battery supply
  177. Aikido 9-pin all-in-1 headphone amp problem
  178. Filament Transformer Question ?
  179. Load Resistance, etc., chart for Class A push pull 6L6s?
  180. Question about preamp, boost and line-stage
  181. help please
  182. Practical phase inverter article
  183. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  184. Rio W-41 no sound
  185. Help: TDA1541A DAC Output To Tube Gainstage
  186. Pieter's take on an all DHT headphone amplifier.
  187. toroidal chokes
  188. Truly Silly Transformer Question
  189. Elementary resistance question
  190. Russian 310A + 300B
  191. 1959 RCA tube amplifier needs help
  192. What's going on?
  193. Aikido 9-pin All-in-one Testing question
  194. Gyrator in Tail of LTP
  195. tubemaster EL84
  196. Silly transformer question
  197. Marant 8b bias meter
  198. Opera Consonance resitor question ?
  199. ADI's Double Dyna
  200. DuMont Stereo Tube Console late 50's - What to do?
  201. No Sound from Magnavox EL 1484-1 amp/phono
  202. Elevated Heater Question
  203. 6P45S/EL509 input capacitance in triode mode
  204. 6E6p-e Little Tiny Wire
  205. another aikido ?
  206. NOS 6P3S-e or cheap new 5881? Identify this tube..
  207. Contan Audio from Melbourne Aus, any info?
  208. Loctal Base Post
  209. Timber amp with solid copper plate as earth and ground plane
  210. Dynaco ST70 - Which tubes do you like?
  211. 6SL7 in parallel driving 6550
  212. Will this work as a heater for 300b?
  213. Tube grid resistance for 6P45S, fine?
  214. Akido help pls
  215. BEARD P101 information
  216. Got some 6n3c-e (6p3s-e)with blank bulb?
  217. Graaf GM-20
  218. medium power OTL circlotron amplifier
  219. Help me identity this amp
  220. Hajdinjak preamp + 2x mono tube amp -What to do?
  221. Moscode 600 Noisy Fan
  222. component reduction in signal chain
  223. Aikido with Stax
  224. 'High power' shunt regulator
  225. Help need on Xindak XA3200MII hybrid pre-amplifier
  226. ideas for tube burn in / bias match station
  227. KT120 triode operation single stage amp
  228. Question regarding 7199 Tube wiring
  229. Why do modern PP OPTs have 16 Ohm taps?
  230. 10M45 current source
  231. 12bh7 in place of ecc82
  232. High voltage winding no center tap?
  233. Marantz 8b recap
  234. Pair Quad II in all original condition... restore or sell
  235. Where to find tube designers for hire?
  236. 10M45S problem
  237. 300B Load Line and Bias?
  238. Looking for little help with Glassware Janus shunt reg
  239. Quick question about grounding
  240. Source for 6jg5 or equivalent in Europe
  241. Need your help: Change from el34 to 6550 ends in a desaster
  242. conn el 6026 tube amp schematic for hifi stereo
  243. GE 211 "flash" question
  244. Learned something (the hard way) about mica capacitors
  245. Aikido octal floating output
  246. Screened cable for rewiring valve amp
  247. Fault developed, producing static noise
  248. Tubelab SE buzz and crackle
  249. EL34+Ecc83 amp hum
  250. Gold plated Dynaco ST-70 for $3k

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