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  1. protecting a VR tube
  2. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  3. help me i need schematic of Music angel PP el34
  4. How long to pre-heat filaments on 6SN7s?
  5. Amplifier Layout - Help & advice needed
  6. Any good places to shop for diy in beijing?
  7. White CF with 6SN7
  8. Cheapo Guitar Amp
  9. Power Amp
  10. is there any sound in a 30A5 / HL94 ?
  11. the hybrid one
  12. 4-1000a se subwoofer amp
  13. ear 834p output resistance
  14. Output transformer push pull
  15. Cheap Lunch?
  16. Source for Alps RK18 pot's..?
  17. Triode strapped tetrode
  18. ok, help me out here......
  19. Homebrew Toroid O/P Tranny
  20. GIBSON GA-79RVT Stereo Cab plans or dims
  21. strange noises from ECL86 amp
  22. Retouching knicks and scratches on chassis
  23. MingDa MC-7R noise and gain
  24. start-up sequence of Aikido preamp / SS power amp
  25. Driving a 6B4G with a single 5687/7044/E182CC?
  26. phono stage with different replay equalization?
  27. Lprimary variation in pair old opts
  28. 8417 triode connected tube data
  29. 5763 = El84?
  30. 5687 to 6L6 SE ?
  31. TubeCad Feedforward Shunt Regulator
  32. "12EA6" Pentode !
  33. Marshall EL34-100/100
  34. short-circuit rectifier EZ80 !
  35. Good radio tube:6AQ5/6005
  36. Replaced pulled tubes with a resistor?
  37. Choke input PSU, drawbacks?
  38. Heater PS alternative / Redux
  39. Gold or silver dress-up rings for tube amps.
  40. 50C5 conversion
  41. Sa-5.1 blow fuse
  42. Hum problem of preamp
  43. Chassis ground blows fuse
  44. 7193 (2c22) preamp buzz/hum
  45. Se Opt
  46. Does anhone use those switching power supply for the heaters?
  47. Tube Minidoc, featuring New York Noise
  48. Help Choosing A Sowter Trans For My DAC?
  49. fisher 800c clipping at ultra low volume
  50. "audiodigit" tubalizer & tubepre original schematic
  51. Dht Guitar Amps
  52. rating of series caps
  53. F704
  54. tube socket PCB library or dimensions
  55. motorboating
  56. 6AN8 Triode connection + EL 84 PP
  57. Please help amend 6AS7PP circuit
  58. El84 Pp
  59. 6V6 Ultralinear
  60. Dear Moderators
  61. 845 se
  62. Bell 2122-B integrated amp - tube suggestions
  63. Wirewound pot for Rk
  64. KT88/90 F2011 Schematic
  65. United Electric 967
  66. Scott 222c mods...?
  67. Switching supply for 300B filaments
  68. ECF80/6BL8
  69. 24v tube buffer & line stage schematic
  70. Vintage gear hunting
  71. Seperate PSU Transformers? Filament Supplys?
  72. 828 is better
  73. Hum on a choke loaded stage
  74. SE Transformer question
  75. Design question - How to make amp porn visible?
  76. Leak Stereo 20 - Johan's Square Wave Theory
  77. K-12G First Time Build
  78. Vishay vt52-55 resistors in a tube amp
  79. EL84 Push-Pull ccs bias
  80. Eight 807's in Push Pull?
  81. Working with Current O/P DAC Chips
  82. Unison research Preludio schematic
  83. Rewinding Power transformer
  84. Information needed on RCA SPECIAL RED TUBES
  85. Score?
  86. Herron phono
  87. tube preamp + SS power amp.
  88. Puzzler
  89. HI-Fi 6p13p
  90. Resistor values
  91. To chassies SE amp,PSU question
  92. Grounding & board Layout questions
  93. Look for a beefy driver tube.
  94. ECC81
  95. 5687 v.s. 6922 preamp/xover
  96. amorphous iron core good or not
  97. Pre-Amp
  98. submini tube preamp is a success
  99. Roll off frequency.
  100. Materials Technology for Electron Tubes by Walter H. Kohl
  101. Grundig TK 46 manual
  102. I'm anti-expensive audio parts but man, a good capacitor can make a difference
  103. How to determine a tube is shorted?
  104. Power supply problem
  105. SS power trans for tube experiments
  106. how to set output current on G Pimm's CCS circuit?
  107. Tube testing questions
  108. Push Pull Output Transformer wiring problem
  109. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  110. Stepped attenuators vs. Carbon pots
  111. hum/buzz with pot all the way up
  112. Cap and resistor types in guitar tube amp
  113. VacuTrace ... In Chicago?
  114. Lifesaver question on earthing
  115. Affordable, but good attenuators?
  116. Gu50 Set ?
  117. mounting an EL34 upside-down
  118. Direct coupled PP 2a3 amp - maths needed!!
  119. My 1st scratch build complete......
  120. Very Basic EL84 or EL34 DIY Amp
  121. Curcio Daniel Preamp Mods?
  122. Tube designs: 45 driving 45/2a3/300b?
  123. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  124. Marantz 8 B : Output Transformer
  125. has anyone used a fan on their project?
  126. Audio Research SP12 heater arrangement
  127. tv damper diodes
  128. volume pot quite close to a tube - is this okay?
  129. UTC s42 special series
  130. 6H30P preamp schematics
  131. Digital potentiometer corrupt tube amps
  132. Alternative filament supply for 01A line stage
  133. Lamination Size
  134. Yaqin MC10L and KT88
  135. Help me read tube data sheets
  136. Quick Question (Driving 6L6GC's)
  137. Cause for concern -- scorch mark in tube
  138. why not 10k pot
  139. Dynaco Stereo 70 Output Transformer
  140. 6CJ3 rectifier or 6D22S rectifier
  141. Back-to-Back trannies
  142. Spring Reverb transformer
  143. Hamfest in Toronto area next weekend
  144. st70 bass response
  145. Triode "Champ" transformer v Edcor
  146. Low vs High aka Series vs Parallel Filaments
  147. Bogen monster MO200A schematic
  148. The Great Tempe Audio Shootout
  149. opinions on this p-p kt88
  150. Any XLR Tube Buffer Plans?
  151. Mystery transformers
  152. I need help with my next project
  153. A thought on Cathode feedback
  154. EL34 SE, direct coupled
  155. Ccs
  156. Hybrid amp: ECH83 + TDA2030A
  157. Leaving tube preamp always powered on.
  158. Variable 6922 heater to cathode voltage limit...?
  159. Is this risky?
  160. What to do with some WE tubes and others
  161. 6B4G SRPP
  162. pentode in triode mode SE vs a DHT SE like 2a3/300b
  163. dynakit decware bottlehead ... which to pick
  164. 6JC6 triode strapped?
  165. Searching for Raw Turrets
  166. Help.. EZ81 power supply diagram
  167. Ear 8l6
  168. Bogen H-30 guitar mod
  169. Voltage measurements from a blown 5AR4 vs. good 5Y3
  170. Sanity check on a 2A3 ultrapath with Pentode driver
  171. Star ground with dissimilar metals: concern?
  172. 5AR4 marked as 5V4GA?
  173. Calculating cathode bypass cap.
  174. Please need help! TUBE BIAS PROBE
  175. Aikido Phono Stage
  176. Using an El84 as a driver
  177. Transfromer value of this 300B circuit
  178. Chassis Layout & PS questions
  179. help needed for 1st DIY tube amp - Sakuma 845 SE
  180. Ideas for 4v filament triodes/pentodes
  181. Comments on Power Amp Viability
  182. Balanced active crossover advice
  183. The Tube Center
  184. Help1 with a 3 channel 2a3 amplifier
  185. volume control hum/noise
  186. PS choke magnetic induction
  187. Circlotron power supply question
  188. Autoformer as choke?
  189. E182CC
  190. Fender Hotrod Deville 212
  191. Grundig Fine Arts OTL Amplifier
  192. Damper diodes, 6ax4 and or 6w4?
  193. Knight 333 / Pioneer SX 34B info needed.
  194. Gargantuan Linestage Output Capacitors
  195. Quad II Restoration
  196. Help identifying a tube.
  197. Tube filaments in series?
  198. Design of Resonant Input Choke PSU
  199. Dissimilar triode
  200. How important is the quality of a triode used as a cathode follower
  201. EL34B tubes
  202. Why not so common to split dual triodes between channels?
  203. In search of power supply schematic for phono preamp
  204. General Electric vs Toshiba 6L6's
  205. Audio Research Dual 75 Capacitor Source?
  206. Choosing A Cathode bypass capacitor
  207. 12AU7 SRPP buffer suggestions
  208. Pentode/triode switch question
  209. Lundahll 1669A Secondary voltage???
  210. Substituting tube rectifiers by silicon
  211. newbie question: is the connection to the output xformer somewhat odd?
  212. All quiet on the SN front - about darned time!
  213. Estimating power output
  214. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  215. Comments on passive pre and cables
  216. curvecaptor
  217. 6b4g pushpull build!newbie
  218. Need help; I have "dog leg" shaped waveform on my amp
  219. Output Transformer Question?
  220. Urgent OT HELP needed ASAP please
  221. Questions on Triode Strapping
  222. Morgan Jones BALANCED?
  223. What are your RFI precautions?
  224. Pentodes without cathodes?
  225. help me
  226. Good quality 6600 CT OT
  227. Local Hamfest score!!!
  228. Unknown Transformer
  229. S5 11g help
  230. 6SN7 pre-amp
  231. These tube can be use for amplifier
  232. Any pitfalls to choke derived CT?
  233. Audio Research D76A bias adjustment
  234. I meet Mr. Morgan Jones
  235. st70 electrolytic caps
  236. Thank you SY
  237. el84 1 channel stopped working help
  238. Help! Weak Bass!
  239. never say never - 300B amps...
  240. 6aq5 Screen resistor?
  241. L. Tatro farm radios from 1930's.
  242. Published/DIY ultra-low THD designs?
  243. EL84 SE auto bias
  244. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  245. Subwoofer connections
  246. 6/30L2 - What to do with them ?
  247. PIONEER SA-810 Tube Amp Schematics
  248. EF86 Gm
  249. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  250. Aria 6P14 makeover.

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