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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. Hammond A0-29 project organ amp
  21. Need help with Phono preamp build with microcontroller relay switching
  22. CCS fixed bias
  23. Gerber file help!!!!!!!
  24. Finally real inductance of a grid resistor...
  25. 12B4 vs. 12B4A
  26. Simple hybrid amplifier
  27. VTL Stereo 50
  28. Distributed volume pot
  29. DHT fixed bias schematic
  30. Wiring a power transformer
  31. What can I do with these tubes?
  32. RCA SP-20 circuit question.
  33. Magnavox Model 1ST525A
  34. LD91 signature power transformer wires Help?
  35. Effect of Regulated DC Filament Supply
  36. D3a-300b amp help!
  37. Need Schematic for this GE Console fast.
  38. Sound experiences 6SN7
  39. EL152 maximum operating settings?
  40. OMG just scored a huge lot of Nos/Nib tube lot for $20
  41. Help with DN2540 CCS design
  42. Strange problem with Caps not blocking DC
  43. Help and suggestions for My Phono and pre amp
  44. PCB and transformer placing and shielding
  45. MC-40 bias current?
  46. Gyrator on ccs-tailed LTP?
  47. capacitor polarity on a VM 20050 amp
  48. Choke? Where to begin?
  49. H11F1 Switching in tube circuits
  50. cooling traditional E-core iron transformers
  51. New vacuum-tube preamp-project!
  52. DIY tube tester
  53. NABU TuneLabSE Buildup
  54. I just inherited a TON of tubes and tube amp components.
  55. Filament Transformer Question ?
  56. Low gain in Heathkit SA-2 phonostage
  57. speakers for leak tl12+
  58. LM3875 + Broskie Cathode Follower. (PICS)
  59. Has anyone built Andrea Ciuffolis Phono End ?
  60. tube substitute
  61. Motorcapacitors in high volt. power supplies?
  62. Troughline, Stereo 20, Technics 1200.Unhappy!
  63. Troughline, Stereo 20, Technics 1200.Unhappy!
  64. Volume potentiometer: the best way to do it...
  65. KT120 "triode" and Hammond 1650N
  66. Tubecad SE Amp Cad
  67. 5702wb
  68. Does anyone know of a company that makes circular risers for tubes?
  69. Negative feedback to differential pair driver
  70. 6L6 UL Power
  71. Bench Power Supply: What to look for ? Which one to get ?
  72. Bevois Valley EL84 PP - distortion in one channel
  73. good by til next winter
  74. PSUD Questions
  75. Power Transformer Wiring Question ?
  76. Fisher 500C C82/C84 ceramic capacitor function
  77. Tubes to first taker
  78. Neutral wired to chassis, how to add a 3-prong cord?
  79. Heater Transformer - too much voltage
  80. Capacitor value
  81. WD KT88
  82. Ultimate spud amp - any ideas ?
  83. Please Critique My Grounding Scheme
  84. negative voltage drop across a diode
  85. 1.5K 200W output transformers? What tubes?
  86. 50 Type Tube
  87. "12SR7 Starving Student" plays extremly quiet
  88. questions about some sim software
  89. Drive
  90. 4xKT88 into Hammond 1650T, what am I missing?
  91. double mono SE
  92. Two electrolytic cap selection questions
  93. Could This Be the Future of Vacuum Tubes?
  94. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  95. Rydel's triode model coefficients
  96. 2E26 Options
  97. Loud Popping Dynaco ST-70
  98. Are these EL34's good?
  99. Amp schematic for Sovtek/Svetlana tubes
  100. KT66 power tube amplifier
  101. 6П3С Plate Voltage
  102. Help choosing which Amplifier to build
  103. need help choosing between two amp schems
  104. 100 W-class Circlotron
  105. How can i match power tubes for Transconductance ?
  106. ef89 ef86
  107. ecc82 5687 preamp! audionote
  108. Hammond transformer questions
  109. IXYS CP20M45 IXC - anyone come across them ?
  110. Good Source for Nice Analog Panel Ammeters for 833C Build?
  111. Restore or build from new?
  112. Bob Danielak 826 Amp?
  113. Newbie Tube Power Supply
  114. What shall I build/do with this lot of tubes?
  115. Gingertubes ecl86 amp build
  116. DC restorer
  117. ECF801 Triode/Pentode any useful application ?
  118. Baking Tubes Procedure - Help...
  119. AVO VCM-163 Tube tester problem
  120. ECC82 normal vs ECC82 long plate
  121. 45 Type Push/Pull Amps
  122. leak tl12+
  123. Triode for 60V
  124. Tube Sound Processor
  125. McIntosh MC-275 buy or build an auto-bias tube amp?
  126. slp-90 clone, decent preamp!
  127. Triode St70 with hum
  128. SSR switching HT transformer?
  129. Tube Flash Drive
  130. 6S31B-P Grid current
  131. Tube Op Amp Building Blocks
  132. knight kb-85 restoration/mod
  133. Acceptable Power Supply Noise Limits?
  134. Loadlines and Microsoft Paint
  135. aikido noval all in one caps upgrade
  136. Specific grid stopper question
  137. GU50 Screen Driven, DC Coupled
  138. April fool?
  139. Providing both balanced and unbalanced inputs
  140. Best triode section inside ecc81 tube?
  141. opt for 45 tube
  142. Designing an Interstage Transformer
  143. Tube Amplifier Builder's Competition
  144. testing tubes for shorts
  145. Tube kits
  146. GU29 PP Amplifier
  147. 1625 tube radio?
  148. Measuring volts on an unloaded PSU secondary
  149. Suggest a preamp project for me.
  150. Audio Magazine
  151. Jadis DA88S schematic
  152. clone jadis jp200 preamp
  153. GROMMES LJ5
  154. Altec 1570B Feedback
  155. rebuilding 3tube zenith amp
  156. Effect of lower G2, EL84 PP
  157. Phono connection for pioneer sx34b
  158. Low output from two 6L6's for no apparent reason?
  159. Preamp design ok?
  160. GZ34 base?
  161. Tube Technology Genesis 100w monoblock manual?
  162. 6SN7 & 6V6 Push Pull - increase gain
  163. screen grid resistor value
  164. KT88 design questions
  165. el84/12ax7 se schematic needed!
  166. Broken AMC CVT 2100
  167. 98dB speaker - El Cheapo
  168. consolidated raw tube data
  169. Loadlines for Parallel SE outputs
  170. What is the correct load for an 845 triode?
  171. Rauland W-835A amplifier, choke field coil output?
  172. First use for Trancendent Sound Tube Analyzer
  173. Schematics/vintage
  174. APPJ PA0901A / Miniwatt N3 schematics
  175. APPJ PA0901A() schematics
  176. Help Needed: Lower Gain on a Tube Amp?
  177. Help: Hickok Western Electric KS-15750 Calibration
  178. Mullard ecc82 12au7 code help
  179. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  180. ST-70 Power Transformer
  181. Help Identifying a Tube - Westinghouse 12AX7A
  182. An incredible collection!
  183. Using only half of a stereo PP amp
  184. Low voltage vs. High Voltage Preamp.
  185. 6J6 Headphone hybrid amplifer?
  186. Hybrid headphone amp.....
  187. Please help with hum problem..
  188. Dead Audio Innovations Series 500
  189. Problems with E88CC / 6922 drawing grid current on power-up
  190. H.J.Leak TL12 "point one"
  191. Tubecad hybrird feedforward feedback shunt regulator
  192. 6v6 SE kit - any good?
  193. DBX 576 complete upgrade. Advices?
  194. help !! 45 tube
  195. 6P45S PP, simulation frustration.
  196. AMC CVT 3030 one more try - or dumpster
  197. Help for 211 HV PSU with damper diodes
  198. Flexible supply idea
  199. Equalizer on EL84 project
  200. parallel single-ended 12W6
  201. help improving/refurb a Fisher k-10 Tube spring reverb
  202. S.E.X. amp + Impedance switch build problems.
  203. problem with speaker
  204. EC80 as preamp tube.
  205. 6CJ3 Rectifier Connection Question ?
  206. AC Filament Voltage Question ?
  207. My new GU50 SE (all pentode)
  208. Ming Da MC-3R Schematics
  209. 12B4 PSE build thread
  210. Looking for options for 4 volt heater
  211. Help me,Art Audio Concerto
  212. heathkit t3 12sh7 tube
  213. PSU dimensioning for pre-amp
  214. Williamson preamp identification help wanted
  215. Adequate switch for UL-triode-pentode
  216. pl500 based integrated OTL amplifier
  217. Capacitor dielectric - high impedance headphones
  218. REQUEST FOR OPINIONS
  219. Mysterious LCR phono preamp
  220. Eimac 100TL Output Transformers and Bias Point ?
  221. Tube deterioration
  222. Heathkit XO-1 power cords
  223. EF86 Push-Pull "power"-amp
  224. Transformers!?
  225. Weird ground loop problem
  226. Re-caping Cayin A70-T
  227. A3 attenuator help for an Aikido line amp
  228. Driver Tube Power Supply Question ?
  229. Line Stage vs. Phase Inverter - 12A*7
  230. Intermittent Buzz Decware Zen SE84Bged
  231. Tamura F2011/el34 x 4
  232. E88CC/6922 battery supply
  233. Aikido 9-pin all-in-1 headphone amp problem
  234. Filament Transformer Question ?
  235. Load Resistance, etc., chart for Class A push pull 6L6s?
  236. Question about preamp, boost and line-stage
  237. help please
  238. Practical phase inverter article
  239. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  240. Rio W-41 no sound
  241. Help: TDA1541A DAC Output To Tube Gainstage
  242. Pieter's take on an all DHT headphone amplifier.
  243. toroidal chokes
  244. Truly Silly Transformer Question
  245. Elementary resistance question
  246. Russian 310A + 300B
  247. 1959 RCA tube amplifier needs help
  248. What's going on?
  249. Aikido 9-pin All-in-one Testing question
  250. Gyrator in Tail of LTP

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