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  1. Volume potentiometer: the best way to do it...
  2. KT120 "triode" and Hammond 1650N
  3. Tubecad SE Amp Cad
  4. 5702wb
  5. Does anyone know of a company that makes circular risers for tubes?
  6. Negative feedback to differential pair driver
  7. effects send and/or preamp out jack on guitar amps
  8. 6L6 UL Power
  9. Bench Power Supply: What to look for ? Which one to get ?
  10. Bevois Valley EL84 PP - distortion in one channel
  11. good by til next winter
  12. PSUD Questions
  13. Power Transformer Wiring Question ?
  14. Fisher 500C C82/C84 ceramic capacitor function
  15. Tubes to first taker
  16. Neutral wired to chassis, how to add a 3-prong cord?
  17. Heater Transformer - too much voltage
  18. Capacitor value
  19. WD KT88
  20. Ultimate spud amp - any ideas ?
  21. Please Critique My Grounding Scheme
  22. negative voltage drop across a diode
  23. 1.5K 200W output transformers? What tubes?
  24. 50 Type Tube
  25. "12SR7 Starving Student" plays extremly quiet
  26. questions about some sim software
  27. Drive
  28. 4xKT88 into Hammond 1650T, what am I missing?
  29. double mono SE
  30. Two electrolytic cap selection questions
  31. Could This Be the Future of Vacuum Tubes?
  32. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  33. Rydel's triode model coefficients
  34. 2E26 Options
  35. Loud Popping Dynaco ST-70
  36. Are these EL34's good?
  37. Amp schematic for Sovtek/Svetlana tubes
  38. KT66 power tube amplifier
  39. 6П3С Plate Voltage
  40. Help choosing which Amplifier to build
  41. need help choosing between two amp schems
  42. 100 W-class Circlotron
  43. How can i match power tubes for Transconductance ?
  44. ef89 ef86
  45. ecc82 5687 preamp! audionote
  46. Hammond transformer questions
  47. IXYS CP20M45 IXC - anyone come across them ?
  48. Good Source for Nice Analog Panel Ammeters for 833C Build?
  49. Restore or build from new?
  50. Bob Danielak 826 Amp?
  51. Newbie Tube Power Supply
  52. What shall I build/do with this lot of tubes?
  53. Gingertubes ecl86 amp build
  54. DC restorer
  55. ECF801 Triode/Pentode any useful application ?
  56. Baking Tubes Procedure - Help...
  57. AVO VCM-163 Tube tester problem
  58. ECC82 normal vs ECC82 long plate
  59. 45 Type Push/Pull Amps
  60. leak tl12+
  61. Triode for 60V
  62. Tube Sound Processor
  63. McIntosh MC-275 buy or build an auto-bias tube amp?
  64. slp-90 clone, decent preamp!
  65. Triode St70 with hum
  66. SSR switching HT transformer?
  67. Tube Flash Drive
  68. 6S31B-P Grid current
  69. Tube Op Amp Building Blocks
  70. knight kb-85 restoration/mod
  71. Acceptable Power Supply Noise Limits?
  72. Loadlines and Microsoft Paint
  73. aikido noval all in one caps upgrade
  74. Specific grid stopper question
  75. GU50 Screen Driven, DC Coupled
  76. April fool?
  77. Providing both balanced and unbalanced inputs
  78. Best triode section inside ecc81 tube?
  79. opt for 45 tube
  80. Designing an Interstage Transformer
  81. Tube Amplifier Builder's Competition
  82. testing tubes for shorts
  83. Tube kits
  84. GU29 PP Amplifier
  85. 1625 tube radio?
  86. Measuring volts on an unloaded PSU secondary
  87. Suggest a preamp project for me.
  88. Audio Magazine
  89. Jadis DA88S schematic
  90. clone jadis jp200 preamp
  91. GROMMES LJ5
  92. Altec 1570B Feedback
  93. rebuilding 3tube zenith amp
  94. Effect of lower G2, EL84 PP
  95. Phono connection for pioneer sx34b
  96. Low output from two 6L6's for no apparent reason?
  97. Preamp design ok?
  98. GZ34 base?
  99. Tube Technology Genesis 100w monoblock manual?
  100. 6SN7 & 6V6 Push Pull - increase gain
  101. screen grid resistor value
  102. KT88 design questions
  103. el84/12ax7 se schematic needed!
  104. Broken AMC CVT 2100
  105. 98dB speaker - El Cheapo
  106. consolidated raw tube data
  107. Loadlines for Parallel SE outputs
  108. What is the correct load for an 845 triode?
  109. Rauland W-835A amplifier, choke field coil output?
  110. First use for Trancendent Sound Tube Analyzer
  111. Schematics/vintage
  112. APPJ PA0901A / Miniwatt N3 schematics
  113. APPJ PA0901A() schematics
  114. Help Needed: Lower Gain on a Tube Amp?
  115. Help: Hickok Western Electric KS-15750 Calibration
  116. Mullard ecc82 12au7 code help
  117. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  118. ST-70 Power Transformer
  119. Help Identifying a Tube - Westinghouse 12AX7A
  120. An incredible collection!
  121. Using only half of a stereo PP amp
  122. Alternate Electrolytic Caps for SimpleSE (and others)
  123. Low voltage vs. High Voltage Preamp.
  124. 6J6 Headphone hybrid amplifer?
  125. Hybrid headphone amp.....
  126. Please help with hum problem..
  127. Dead Audio Innovations Series 500
  128. Problems with E88CC / 6922 drawing grid current on power-up
  129. H.J.Leak TL12 "point one"
  130. Tubecad hybrird feedforward feedback shunt regulator
  131. 6v6 SE kit - any good?
  132. DBX 576 complete upgrade. Advices?
  133. help !! 45 tube
  134. 6P45S PP, simulation frustration.
  135. AMC CVT 3030 one more try - or dumpster
  136. Help for 211 HV PSU with damper diodes
  137. Flexible supply idea
  138. what range speaker used 2x 18watt or 2x 10 watt on 18 watts amp
  139. Equalizer on EL84 project
  140. parallel single-ended 12W6
  141. help improving/refurb a Fisher k-10 Tube spring reverb
  142. S.E.X. amp + Impedance switch build problems.
  143. problem with speaker
  144. EC80 as preamp tube.
  145. 6CJ3 Rectifier Connection Question ?
  146. AC Filament Voltage Question ?
  147. My new GU50 SE (all pentode)
  148. Ming Da MC-3R Schematics
  149. 12B4 PSE build thread
  150. Looking for options for 4 volt heater
  151. Help me,Art Audio Concerto
  152. heathkit t3 12sh7 tube
  153. PSU dimensioning for pre-amp
  154. Old ceramic dogbone capacitor color codes
  155. Williamson preamp identification help wanted
  156. Adequate switch for UL-triode-pentode
  157. pl500 based integrated OTL amplifier
  158. Capacitor dielectric - high impedance headphones
  159. REQUEST FOR OPINIONS
  160. Mysterious LCR phono preamp
  161. Eimac 100TL Output Transformers and Bias Point ?
  162. Tube deterioration
  163. Heathkit XO-1 power cords
  164. EF86 Push-Pull "power"-amp
  165. Transformers!?
  166. Weird ground loop problem
  167. Re-caping Cayin A70-T
  168. A3 attenuator help for an Aikido line amp
  169. Driver Tube Power Supply Question ?
  170. Line Stage vs. Phase Inverter - 12A*7
  171. Intermittent Buzz Decware Zen SE84Bged
  172. Tamura F2011/el34 x 4
  173. E88CC/6922 battery supply
  174. Aikido 9-pin all-in-1 headphone amp problem
  175. Filament Transformer Question ?
  176. Load Resistance, etc., chart for Class A push pull 6L6s?
  177. Question about preamp, boost and line-stage
  178. help please
  179. Practical phase inverter article
  180. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  181. Rio W-41 no sound
  182. Help: TDA1541A DAC Output To Tube Gainstage
  183. Pieter's take on an all DHT headphone amplifier.
  184. toroidal chokes
  185. Truly Silly Transformer Question
  186. Elementary resistance question
  187. Russian 310A + 300B
  188. 1959 RCA tube amplifier needs help
  189. What's going on?
  190. Aikido 9-pin All-in-one Testing question
  191. Gyrator in Tail of LTP
  192. tubemaster EL84
  193. Silly transformer question
  194. Marant 8b bias meter
  195. ElectroTone OrganMate spring reverb - mod suggestions?
  196. Opera Consonance resitor question ?
  197. ADI's Double Dyna
  198. DuMont Stereo Tube Console late 50's - What to do?
  199. No Sound from Magnavox EL 1484-1 amp/phono
  200. Elevated Heater Question
  201. 6P45S/EL509 input capacitance in triode mode
  202. 6E6p-e Little Tiny Wire
  203. another aikido ?
  204. NOS 6P3S-e or cheap new 5881? Identify this tube..
  205. Contan Audio from Melbourne Aus, any info?
  206. Loctal Base Post
  207. Timber amp with solid copper plate as earth and ground plane
  208. Dynaco ST70 - Which tubes do you like?
  209. 6SL7 in parallel driving 6550
  210. Will this work as a heater for 300b?
  211. Tube grid resistance for 6P45S, fine?
  212. Akido help pls
  213. BEARD P101 information
  214. Got some 6n3c-e (6p3s-e)with blank bulb?
  215. Graaf GM-20
  216. medium power OTL circlotron amplifier
  217. Help me identity this amp
  218. Hajdinjak preamp + 2x mono tube amp -What to do?
  219. Moscode 600 Noisy Fan
  220. component reduction in signal chain
  221. Aikido with Stax
  222. 'High power' shunt regulator
  223. Help need on Xindak XA3200MII hybrid pre-amplifier
  224. ideas for tube burn in / bias match station
  225. KT120 triode operation single stage amp
  226. Question regarding 7199 Tube wiring
  227. Why do modern PP OPTs have 16 Ohm taps?
  228. 10M45 current source
  229. 12bh7 in place of ecc82
  230. High voltage winding no center tap?
  231. Marantz 8b recap
  232. Pair Quad II in all original condition... restore or sell
  233. Where to find tube designers for hire?
  234. 10M45S problem
  235. 300B Load Line and Bias?
  236. Looking for little help with Glassware Janus shunt reg
  237. Quick question about grounding
  238. Source for 6jg5 or equivalent in Europe
  239. Need your help: Change from el34 to 6550 ends in a desaster
  240. conn el 6026 tube amp schematic for hifi stereo
  241. GE 211 "flash" question
  242. Learned something (the hard way) about mica capacitors
  243. Aikido octal floating output
  244. Screened cable for rewiring valve amp
  245. Fault developed, producing static noise
  246. Tubelab SE buzz and crackle
  247. EL34+Ecc83 amp hum
  248. Gold plated Dynaco ST-70 for $3k
  249. Preamp noise level ?
  250. KOSS A1220 - Vintage Tube Headphone Amp - Diagnose and Mod questions...

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