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  1. Mystery Telefunken T9 amp
  2. Improving preamp's bass response.
  3. EZ150
  4. Need help identifying baldwin tube amp
  5. 45 amp with 6N7
  6. Selecting 5881's question
  7. Schematic with ECC88
  8. PP Output Transformers
  9. Gas Tube Question (CK1006 Rectifier)
  10. Art Audio Quintet MK1 EL34 PP resistor value
  11. The Midlife Crisis - My 833C Amp Build
  12. Tube amp Building Compitition Interest check
  13. Found myself a Magnavox 9302-00
  14. DIY Stereo Amp 15-50wpc
  15. Gray Research AM-50
  16. Preamp Grounding and Hum
  17. What to do with AA-100 output iron
  18. Flat screen t.v. and tube amps?
  19. 12AX7 Plate Current vs. HT Voltage
  20. Need help with Phono preamp build with microcontroller relay switching
  21. CCS fixed bias
  22. Gerber file help!!!!!!!
  23. Finally real inductance of a grid resistor...
  24. 12B4 vs. 12B4A
  25. Simple hybrid amplifier
  26. VTL Stereo 50
  27. Distributed volume pot
  28. DHT fixed bias schematic
  29. Wiring a power transformer
  30. What can I do with these tubes?
  31. RCA SP-20 circuit question.
  32. Magnavox Model 1ST525A
  33. LD91 signature power transformer wires Help?
  34. Effect of Regulated DC Filament Supply
  35. D3a-300b amp help!
  36. Need Schematic for this GE Console fast.
  37. Sound experiences 6SN7
  38. EL152 maximum operating settings?
  39. OMG just scored a huge lot of Nos/Nib tube lot for $20
  40. Help with DN2540 CCS design
  41. Strange problem with Caps not blocking DC
  42. Help and suggestions for My Phono and pre amp
  43. PCB and transformer placing and shielding
  44. MC-40 bias current?
  45. Gyrator on ccs-tailed LTP?
  46. capacitor polarity on a VM 20050 amp
  47. Choke? Where to begin?
  48. H11F1 Switching in tube circuits
  49. cooling traditional E-core iron transformers
  50. New vacuum-tube preamp-project!
  51. NABU TuneLabSE Buildup
  52. I just inherited a TON of tubes and tube amp components.
  53. Filament Transformer Question ?
  54. Low gain in Heathkit SA-2 phonostage
  55. speakers for leak tl12+
  56. LM3875 + Broskie Cathode Follower. (PICS)
  57. Has anyone built Andrea Ciuffolis Phono End ?
  58. tube substitute
  59. Motorcapacitors in high volt. power supplies?
  60. Troughline, Stereo 20, Technics 1200.Unhappy!
  61. Troughline, Stereo 20, Technics 1200.Unhappy!
  62. Volume potentiometer: the best way to do it...
  63. KT120 "triode" and Hammond 1650N
  64. Tubecad SE Amp Cad
  65. 5702wb
  66. Does anyone know of a company that makes circular risers for tubes?
  67. Negative feedback to differential pair driver
  68. 6L6 UL Power
  69. Bench Power Supply: What to look for ? Which one to get ?
  70. Bevois Valley EL84 PP - distortion in one channel
  71. good by til next winter
  72. PSUD Questions
  73. Power Transformer Wiring Question ?
  74. Fisher 500C C82/C84 ceramic capacitor function
  75. Tubes to first taker
  76. Neutral wired to chassis, how to add a 3-prong cord?
  77. Heater Transformer - too much voltage
  78. Capacitor value
  79. WD KT88
  80. Ultimate spud amp - any ideas ?
  81. Please Critique My Grounding Scheme
  82. negative voltage drop across a diode
  83. 1.5K 200W output transformers? What tubes?
  84. 50 Type Tube
  85. "12SR7 Starving Student" plays extremly quiet
  86. questions about some sim software
  87. Drive
  88. 4xKT88 into Hammond 1650T, what am I missing?
  89. double mono SE
  90. Two electrolytic cap selection questions
  91. Could This Be the Future of Vacuum Tubes?
  92. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  93. Rydel's triode model coefficients
  94. 2E26 Options
  95. Loud Popping Dynaco ST-70
  96. Are these EL34's good?
  97. Amp schematic for Sovtek/Svetlana tubes
  98. KT66 power tube amplifier
  99. 6П3С Plate Voltage
  100. Help choosing which Amplifier to build
  101. need help choosing between two amp schems
  102. 100 W-class Circlotron
  103. How can i match power tubes for Transconductance ?
  104. ef89 ef86
  105. ecc82 5687 preamp! audionote
  106. Hammond transformer questions
  107. IXYS CP20M45 IXC - anyone come across them ?
  108. Good Source for Nice Analog Panel Ammeters for 833C Build?
  109. Restore or build from new?
  110. Bob Danielak 826 Amp?
  111. Newbie Tube Power Supply
  112. What shall I build/do with this lot of tubes?
  113. Gingertubes ecl86 amp build
  114. DC restorer
  115. ECF801 Triode/Pentode any useful application ?
  116. Baking Tubes Procedure - Help...
  117. ECC82 normal vs ECC82 long plate
  118. 45 Type Push/Pull Amps
  119. leak tl12+
  120. Triode for 60V
  121. Tube Sound Processor
  122. McIntosh MC-275 buy or build an auto-bias tube amp?
  123. slp-90 clone, decent preamp!
  124. Triode St70 with hum
  125. SSR switching HT transformer?
  126. Tube Flash Drive
  127. 6S31B-P Grid current
  128. Tube Op Amp Building Blocks
  129. knight kb-85 restoration/mod
  130. Acceptable Power Supply Noise Limits?
  131. Loadlines and Microsoft Paint
  132. aikido noval all in one caps upgrade
  133. Specific grid stopper question
  134. GU50 Screen Driven, DC Coupled
  135. April fool?
  136. Providing both balanced and unbalanced inputs
  137. Best triode section inside ecc81 tube?
  138. opt for 45 tube
  139. Designing an Interstage Transformer
  140. Tube Amplifier Builder's Competition
  141. testing tubes for shorts
  142. Tube kits
  143. GU29 PP Amplifier
  144. 1625 tube radio?
  145. Measuring volts on an unloaded PSU secondary
  146. Suggest a preamp project for me.
  147. Audio Magazine
  148. Jadis DA88S schematic
  149. clone jadis jp200 preamp
  150. GROMMES LJ5
  151. Altec 1570B Feedback
  152. rebuilding 3tube zenith amp
  153. Effect of lower G2, EL84 PP
  154. Phono connection for pioneer sx34b
  155. Low output from two 6L6's for no apparent reason?
  156. Preamp design ok?
  157. GZ34 base?
  158. Tube Technology Genesis 100w monoblock manual?
  159. 6SN7 & 6V6 Push Pull - increase gain
  160. screen grid resistor value
  161. KT88 design questions
  162. el84/12ax7 se schematic needed!
  163. Broken AMC CVT 2100
  164. 98dB speaker - El Cheapo
  165. consolidated raw tube data
  166. Loadlines for Parallel SE outputs
  167. What is the correct load for an 845 triode?
  168. Rauland W-835A amplifier, choke field coil output?
  169. First use for Trancendent Sound Tube Analyzer
  170. Schematics/vintage
  171. APPJ PA0901A / Miniwatt N3 schematics
  172. APPJ PA0901A() schematics
  173. Help Needed: Lower Gain on a Tube Amp?
  174. Mullard ecc82 12au7 code help
  175. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  176. ST-70 Power Transformer
  177. Help Identifying a Tube - Westinghouse 12AX7A
  178. An incredible collection!
  179. Using only half of a stereo PP amp
  180. Low voltage vs. High Voltage Preamp.
  181. 6J6 Headphone hybrid amplifer?
  182. Hybrid headphone amp.....
  183. Please help with hum problem..
  184. Dead Audio Innovations Series 500
  185. Problems with E88CC / 6922 drawing grid current on power-up
  186. H.J.Leak TL12 "point one"
  187. Tubecad hybrird feedforward feedback shunt regulator
  188. 6v6 SE kit - any good?
  189. DBX 576 complete upgrade. Advices?
  190. help !! 45 tube
  191. 6P45S PP, simulation frustration.
  192. AMC CVT 3030 one more try - or dumpster
  193. Help for 211 HV PSU with damper diodes
  194. Flexible supply idea
  195. Equalizer on EL84 project
  196. parallel single-ended 12W6
  197. help improving/refurb a Fisher k-10 Tube spring reverb
  198. S.E.X. amp + Impedance switch build problems.
  199. problem with speaker
  200. EC80 as preamp tube.
  201. 6CJ3 Rectifier Connection Question ?
  202. AC Filament Voltage Question ?
  203. My new GU50 SE (all pentode)
  204. Ming Da MC-3R Schematics
  205. 12B4 PSE build thread
  206. Looking for options for 4 volt heater
  207. Help me,Art Audio Concerto
  208. heathkit t3 12sh7 tube
  209. PSU dimensioning for pre-amp
  210. Williamson preamp identification help wanted
  211. Adequate switch for UL-triode-pentode
  212. pl500 based integrated OTL amplifier
  213. Capacitor dielectric - high impedance headphones
  214. REQUEST FOR OPINIONS
  215. Mysterious LCR phono preamp
  216. Eimac 100TL Output Transformers and Bias Point ?
  217. Tube deterioration
  218. Heathkit XO-1 power cords
  219. EF86 Push-Pull "power"-amp
  220. Transformers!?
  221. Weird ground loop problem
  222. Re-caping Cayin A70-T
  223. A3 attenuator help for an Aikido line amp
  224. Driver Tube Power Supply Question ?
  225. Line Stage vs. Phase Inverter - 12A*7
  226. Intermittent Buzz Decware Zen SE84Bged
  227. Tamura F2011/el34 x 4
  228. E88CC/6922 battery supply
  229. Aikido 9-pin all-in-1 headphone amp problem
  230. Filament Transformer Question ?
  231. Load Resistance, etc., chart for Class A push pull 6L6s?
  232. Question about preamp, boost and line-stage
  233. help please
  234. Practical phase inverter article
  235. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  236. Rio W-41 no sound
  237. Help: TDA1541A DAC Output To Tube Gainstage
  238. Pieter's take on an all DHT headphone amplifier.
  239. toroidal chokes
  240. Truly Silly Transformer Question
  241. Elementary resistance question
  242. Russian 310A + 300B
  243. 1959 RCA tube amplifier needs help
  244. What's going on?
  245. Aikido 9-pin All-in-one Testing question
  246. Gyrator in Tail of LTP
  247. tubemaster EL84
  248. Silly transformer question
  249. Marant 8b bias meter
  250. Opera Consonance resitor question ?

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