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  1. Good radio tube:6AQ5/6005
  2. Replaced pulled tubes with a resistor?
  3. Choke input PSU, drawbacks?
  4. Heater PS alternative / Redux
  5. Gold or silver dress-up rings for tube amps.
  6. 50C5 conversion
  7. Sa-5.1 blow fuse
  8. Hum problem of preamp
  9. Chassis ground blows fuse
  10. 7193 (2c22) preamp buzz/hum
  11. Se Opt
  12. Does anhone use those switching power supply for the heaters?
  13. Tube Minidoc, featuring New York Noise
  14. Help Choosing A Sowter Trans For My DAC?
  15. fisher 800c clipping at ultra low volume
  16. "audiodigit" tubalizer & tubepre original schematic
  17. Dht Guitar Amps
  18. rating of series caps
  19. F704
  20. tube socket PCB library or dimensions
  21. motorboating
  22. 6AN8 Triode connection + EL 84 PP
  23. Please help amend 6AS7PP circuit
  24. El84 Pp
  25. 6V6 Ultralinear
  26. Dear Moderators
  27. 845 se
  28. Bell 2122-B integrated amp - tube suggestions
  29. Wirewound pot for Rk
  30. KT88/90 F2011 Schematic
  31. United Electric 967
  32. Scott 222c mods...?
  33. Switching supply for 300B filaments
  34. ECF80/6BL8
  35. 24v tube buffer & line stage schematic
  36. Vintage gear hunting
  37. Seperate PSU Transformers? Filament Supplys?
  38. 828 is better
  39. Hum on a choke loaded stage
  40. SE Transformer question
  41. Design question - How to make amp porn visible?
  42. Leak Stereo 20 - Johan's Square Wave Theory
  43. K-12G First Time Build
  44. Vishay vt52-55 resistors in a tube amp
  45. EL84 Push-Pull ccs bias
  46. Eight 807's in Push Pull?
  47. Working with Current O/P DAC Chips
  48. Unison research Preludio schematic
  49. Rewinding Power transformer
  50. Information needed on RCA SPECIAL RED TUBES
  51. Score?
  52. Herron phono
  53. tube preamp + SS power amp.
  54. Puzzler
  55. HI-Fi 6p13p
  56. Resistor values
  57. To chassies SE amp,PSU question
  58. Grounding & board Layout questions
  59. Look for a beefy driver tube.
  60. ECC81
  61. 5687 v.s. 6922 preamp/xover
  62. amorphous iron core good or not
  63. Pre-Amp
  64. submini tube preamp is a success
  65. Roll off frequency.
  66. Materials Technology for Electron Tubes by Walter H. Kohl
  67. Grundig TK 46 manual
  68. I'm anti-expensive audio parts but man, a good capacitor can make a difference
  69. How to determine a tube is shorted?
  70. Power supply problem
  71. SS power trans for tube experiments
  72. how to set output current on G Pimm's CCS circuit?
  73. Tube testing questions
  74. Push Pull Output Transformer wiring problem
  75. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  76. Stepped attenuators vs. Carbon pots
  77. hum/buzz with pot all the way up
  78. Cap and resistor types in guitar tube amp
  79. VacuTrace ... In Chicago?
  80. Lifesaver question on earthing
  81. Affordable, but good attenuators?
  82. Gu50 Set ?
  83. mounting an EL34 upside-down
  84. Direct coupled PP 2a3 amp - maths needed!!
  85. My 1st scratch build complete......
  86. Very Basic EL84 or EL34 DIY Amp
  87. Curcio Daniel Preamp Mods?
  88. Tube designs: 45 driving 45/2a3/300b?
  89. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  90. Marantz 8 B : Output Transformer
  91. has anyone used a fan on their project?
  92. Audio Research SP12 heater arrangement
  93. tv damper diodes
  94. volume pot quite close to a tube - is this okay?
  95. UTC s42 special series
  96. 6H30P preamp schematics
  97. Digital potentiometer corrupt tube amps
  98. Alternative filament supply for 01A line stage
  99. Lamination Size
  100. Yaqin MC10L and KT88
  101. Help me read tube data sheets
  102. Quick Question (Driving 6L6GC's)
  103. Cause for concern -- scorch mark in tube
  104. why not 10k pot
  105. Dynaco Stereo 70 Output Transformer
  106. 6CJ3 rectifier or 6D22S rectifier
  107. Back-to-Back trannies
  108. Spring Reverb transformer
  109. Hamfest in Toronto area next weekend
  110. st70 bass response
  111. Triode "Champ" transformer v Edcor
  112. Low vs High aka Series vs Parallel Filaments
  113. Bogen monster MO200A schematic
  114. The Great Tempe Audio Shootout
  115. opinions on this p-p kt88
  116. Any XLR Tube Buffer Plans?
  117. Mystery transformers
  118. I need help with my next project
  119. A thought on Cathode feedback
  120. EL34 SE, direct coupled
  121. Ccs
  122. Hybrid amp: ECH83 + TDA2030A
  123. Leaving tube preamp always powered on.
  124. Variable 6922 heater to cathode voltage limit...?
  125. Is this risky?
  126. What to do with some WE tubes and others
  127. 6B4G SRPP
  128. pentode in triode mode SE vs a DHT SE like 2a3/300b
  129. dynakit decware bottlehead ... which to pick
  130. 6JC6 triode strapped?
  131. Searching for Raw Turrets
  132. Help.. EZ81 power supply diagram
  133. Ear 8l6
  134. Bogen H-30 guitar mod
  135. Voltage measurements from a blown 5AR4 vs. good 5Y3
  136. Sanity check on a 2A3 ultrapath with Pentode driver
  137. Star ground with dissimilar metals: concern?
  138. 5AR4 marked as 5V4GA?
  139. Calculating cathode bypass cap.
  140. Please need help! TUBE BIAS PROBE
  141. Aikido Phono Stage
  142. Using an El84 as a driver
  143. Transfromer value of this 300B circuit
  144. Chassis Layout & PS questions
  145. help needed for 1st DIY tube amp - Sakuma 845 SE
  146. Ideas for 4v filament triodes/pentodes
  147. Comments on Power Amp Viability
  148. Balanced active crossover advice
  149. The Tube Center
  150. Help1 with a 3 channel 2a3 amplifier
  151. volume control hum/noise
  152. PS choke magnetic induction
  153. Circlotron power supply question
  154. Autoformer as choke?
  155. E182CC
  156. Fender Hotrod Deville 212
  157. Grundig Fine Arts OTL Amplifier
  158. Damper diodes, 6ax4 and or 6w4?
  159. Knight 333 / Pioneer SX 34B info needed.
  160. Gargantuan Linestage Output Capacitors
  161. Quad II Restoration
  162. Help identifying a tube.
  163. Tube filaments in series?
  164. Design of Resonant Input Choke PSU
  165. Dissimilar triode
  166. How important is the quality of a triode used as a cathode follower
  167. EL34B tubes
  168. Why not so common to split dual triodes between channels?
  169. In search of power supply schematic for phono preamp
  170. General Electric vs Toshiba 6L6's
  171. Audio Research Dual 75 Capacitor Source?
  172. Choosing A Cathode bypass capacitor
  173. 12AU7 SRPP buffer suggestions
  174. Pentode/triode switch question
  175. Lundahll 1669A Secondary voltage???
  176. Substituting tube rectifiers by silicon
  177. newbie question: is the connection to the output xformer somewhat odd?
  178. All quiet on the SN front - about darned time!
  179. Estimating power output
  180. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  181. Comments on passive pre and cables
  182. curvecaptor
  183. 6b4g pushpull build!newbie
  184. Need help; I have "dog leg" shaped waveform on my amp
  185. Output Transformer Question?
  186. Urgent OT HELP needed ASAP please
  187. Questions on Triode Strapping
  188. Morgan Jones BALANCED?
  189. What are your RFI precautions?
  190. Pentodes without cathodes?
  191. help me
  192. Good quality 6600 CT OT
  193. Local Hamfest score!!!
  194. Unknown Transformer
  195. S5 11g help
  196. 6SN7 pre-amp
  197. These tube can be use for amplifier
  198. Any pitfalls to choke derived CT?
  199. Audio Research D76A bias adjustment
  200. I meet Mr. Morgan Jones
  201. st70 electrolytic caps
  202. Thank you SY
  203. el84 1 channel stopped working help
  204. Help! Weak Bass!
  205. never say never - 300B amps...
  206. 6aq5 Screen resistor?
  207. L. Tatro farm radios from 1930's.
  208. Published/DIY ultra-low THD designs?
  209. EL84 SE auto bias
  210. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  211. Subwoofer connections
  212. 6/30L2 - What to do with them ?
  213. PIONEER SA-810 Tube Amp Schematics
  214. EF86 Gm
  215. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  216. Aria 6P14 makeover.
  217. switch for paralelled tube
  218. Curvecaptor with pentodes??
  219. Ground point for HF decoupling cap?
  220. Cancelling Harmonics
  221. Quiet Tube
  222. LM385 Adjustable voltage ref. diode as LED bias?
  223. Tubed Expression Pedal
  224. Any spice models around for AA5-esque battery tubes?
  225. Where to connect shielding
  226. Bogen K15 convert to guitar amp
  227. Help 805 As that the friend makes to straighten even gallbladder machine
  228. studiogear of the beatles
  229. 6AK5 Triode Curves
  230. twisted pair signal, source selector and ground buss???
  231. Tiny Amplifiers
  232. A newly aquired Hum
  233. many jan tubes
  234. is this the correct way of adding a volume control?
  235. Basic DIY Valve Phono Stage
  236. 5879 Experience?
  237. personal jobs
  238. Wanted Triode strapped curves for pentode of ECL82.
  239. source selector / volume hum in Aikido
  240. DHTs and Cathode Bias
  241. Best SET driver stage with lots of B+?
  242. Tube Library Pspice error
  243. referencing DC heater to B+
  244. Double floating Circlotron
  245. Supply Capacitors ?
  246. Sakuma style Tango project
  247. MC10L is good or not
  248. Eico HF-20 & Claus Byrith PS voltage & power draw
  249. Voltage Regulator Tubes
  250. EL34 triode-connected grounding-grid curves?

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