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  1. really dumb question about SE 6bq5 operating point (triode)
  2. 6n7gt
  3. EE-Zee & Chee-Zee bias and offset adjustment idea
  4. Preamp Selection
  5. High frecuency oscillation when moving volume pot
  6. Choke load - how to plot loadline?
  7. Audio Research LS2
  8. Any Tube DIYers in Bay Area
  9. 6DJ8 preamp voltage?
  10. Diodes in Grid-Cathode Circuit
  11. To regulate or not?
  12. Odd tube behavior
  13. output txfr on cathode?
  14. tube preamp w/ XLR?
  15. ECC88 and PCC88 filament voltages
  16. Best tube choice for 1st SET project?
  17. Croft Vitale
  18. at last, amp finnished
  19. Silver micas as coupling caps?
  20. Valve-Heart Recording Studio
  21. Prototyping ( Breadboard ) Chassis Ideas and Suggestions
  22. old tubes
  23. where to place extra filter cap
  24. Troubleshooting a 6n1p linestage.
  25. 300BSE series
  26. Which triode is the best for preamp?
  27. AV8 and AV15 Vaic tubes
  28. Refridgerator trying to kill my Valve Amp
  29. When is capacitance making AC ripple a non-issue in B+ PS's?
  30. Quicksilver Bias Problem
  31. Looking for good book about phase split
  32. speaker protection fuse in Transcendent T8
  33. Shuguang Tube Factory(pics)
  34. "Pentodes for Dummies" needed.
  35. schematic for audio research classic 120 amps?
  36. Bouncing Ground
  37. Testing response....
  38. Impedance selection
  39. Heater To Cathode Potential
  40. uneven wound 50w OT 2 ideas...?
  41. 6B4G Amplifier Questions
  42. grounding heater/filament center
  43. Do I lose power when parafeeding?
  44. no ground problem
  45. Tube amp project
  46. bi-amping with gainclone + tubeamp
  47. Plitron/Vanderveen/KT88 Tube rectifier recommendation for 230mA?
  48. proposed 833 design
  49. Thyratron Circuit
  50. different phase invertors
  51. Tetrode or Pentode? / Tube info
  52. RECTIFIERLESS, is that possible?
  53. About high voltage regulated power supplies
  54. Stupid question about capacitors
  55. Time advanced error feedback correction
  56. My first tube amp
  57. copland 504
  58. 6D22S Damper Tubes
  59. resuscitating 60+ year old radio
  60. 6C45 in a phono amp? looks like this might be hot.
  61. quality of power supply
  62. Gassy Tube
  63. transformer coupling, magnetic amplifiers, grid leak current
  64. How low 6922/ECC88 can go?
  65. Question about PP EL34 power supply behaviour
  66. Tube amps and electric safety
  67. Transformer for a tube amp question
  68. Need some info on E88CC/6922
  69. strange "thing"
  70. Extra gain stage Marshall plexi 50watt
  71. Help with Hickok 539A tube tester repair..
  72. Micing tube amps
  73. Tube preamp huge DC thump!
  74. New speaker for transcendent T8
  75. choke winding
  76. MC phono preamp
  77. KYW's linestage (split from RIAA for life time)
  78. output transformer spice model
  79. cathode connection in directly heated triodes
  80. 50watt Plexi Again
  81. Anyone use ICs as input phase splitters for tube equipment
  82. Tube Sockets
  83. RIAA and Linestage for life time
  84. 211 Preamp
  85. Building a Marshall Plexi
  86. PL504 circuits.
  87. Tube Recommendation
  88. 6.3v 30A!?
  89. Simplest 6080 or 6AS7 OTL Project?
  90. Is 6N1P = 6N7 = ECC31
  91. EL34 in Pentode Class A?
  92. Wiring a 12au7
  93. BLue hue
  94. Choosing a suitable 50W cathode resistor
  95. 5687
  96. heathkit Schematic
  97. Precision S100 schematics?
  98. my RIAA stage. Any comment
  99. buffer circuits
  100. switchable 2.5k/5k primary ot
  101. Old grundig 3095 radio
  102. DIY Single Ended Triode Designs
  103. dog whistle
  104. Volume pot question
  105. Oil PP Cap
  106. commercial tube preamps
  107. Transformer Cover
  108. Harman-Kardon A-300 Amplifier
  109. Phono preamp- how to modify to get deeper LF?
  110. Thyratron heater supply?
  111. amp conversions
  112. Looking for Scott 200 photofacts or service manual
  113. 6ag7 metal pentodes
  114. EL84 Push-Pull Vieta A-225 opinion
  115. 5998 power amp question
  116. Which rectifier tube?
  117. tube preamp
  118. 6GT5 distortion problem
  119. tube preamps and gain
  120. Cathode Follower? Yay or nay?
  121. what the crap is this!?
  122. Safety Practices, General and Ultra-High Voltage
  123. Output transformer issues...
  124. Tube sockets with the same pin spacing as the tube
  125. Help needed with preamp.
  126. VSE RTP5 linestage comments
  127. VSE RTP5 linestage comments
  128. Futterman OTL ferrite bead specification
  129. common anode capacitor for both sections
  130. How good are cheap tranny-interstages
  131. Favorite bias measuring and metering methods?
  132. Suitable regulated/filtered 4volt battery-valve power supply suitable for 6+ valves?
  133. Newbie Transformer Secondary Combination Qs--Plitron Example
  134. Zenith Wavemagnet Help Please !!!
  135. Audio research vs55/VT50/VT100
  136. quad 6bm8 per channel
  137. Tubes from St.Petersburg, Russia?
  138. Tube preamplifier
  139. Seeking suggestions on slowing B+ turn on
  140. Help on Brute force
  141. 6SL7 or 12AX7 in Kimmel OTL
  142. What´s wrong with Hammond 1628SE?
  143. Input stages - to decouple B+ or not?
  144. valve info? NEC 30M-P25
  145. Recommended sources for SED EL 34s
  146. Golden Middle output transformers
  147. Help needed on tube rectification.
  148. NWWA DIY Audio Meet 2004
  149. Audio Research V70
  150. PSU choke value
  151. 4 Ohm on 25v Tap?
  152. The MDF amp chassis discusion reminds me...
  153. Tubed-out guitar affects
  154. SE used as step down OT
  155. Siemens E83f
  156. Enclosures in MDF.
  157. Tube tester and noise test
  158. Sovtek KT88 specifications not found :(
  159. Fisher 800C FM Stereo problem
  160. Soliciting Enthusiastic Recommendations for 50+WPC Kit or Design
  161. EL519/KT90 The old debate
  162. Plasma/ionic
  163. Another Fender on the bench.
  164. How much voltage won't kill me?
  165. Pcl84 / 15dq8
  166. Alliance Audio
  167. Opinions of Menno Vanderveen ( van der Veen ) PP Amps, Esp. Super-Triode
  168. Supertotem
  169. neon bulbs as grid voltage clamps
  170. Large caps in PSU without choke?
  171. Tube rectifier ?s
  172. resistors, capacitors, etc. NEED MORE INFO!
  173. Recitifaction is a pain in the butt? A few lame questions
  174. Hook-up Wire?
  175. Using Telefunken "Tank" transfomers for a single ended el84 amp?
  176. cathode follower with gain
  177. Got sparks in my GZ34!
  178. Duncans PSU designer and tube rectifier.
  179. I want to make a simple UL PP amp
  180. Phase splitter questions
  181. I want dizzy, why can't my speech show?
  182. I come from China, giving the same friends in a fondness for
  183. I come from China, giving the same friends in a fondness for
  184. Choke value?
  185. line voltage level
  186. SRPP & DACs
  187. Tube ageing ?
  188. Changing caps for preamp
  189. 845 PP and Lundahl 1620
  190. schematic for a push pull EL 509
  191. 6N1P preamp too much gain...
  192. Looking for a great DIY-Preamp for MICs (48v)
  193. Miniature 8pin socket
  194. Mesa Boogie Dual Caliber DC-3 schematic?
  195. Please help my MC240
  196. Hammond 125ese cheap in Europe?
  197. Critique for circuit of great value 805 SET?
  198. SE OPT's & Biasing
  199. Compact All-In-One Chassis Design with good ventilation. And low noise, Not a Schemat
  200. Newbie First Amp
  201. Audio Note P-2
  202. 300b?
  203. Power Supply and VR tube help!
  204. Tubes for direct-driving ESL
  205. Question about popping Noise
  206. tube preamp...opinions
  207. Help! I need TRW(UTC) O35 DATA
  208. Is this a good tube DIY kit to get?
  209. Best AC Heater Practices
  210. new hybrid amp turn on circuit
  211. dc phono
  212. screen-plate resistor and grid leak resistor
  213. Kr842vhd
  214. DRD 300b amplifier sound quality?
  215. Pre-amp selection
  216. tube buffer for TDA1543 based dac
  217. Does anybody know if a WE404 (5847) would be able...
  218. Transformer Question
  219. New preamp
  220. Fisher 800c neg bias problem
  221. Seek your comments on 71a tube amp
  222. Single-Ended 6V6 Questions
  223. El509 Plate current question
  224. Building a Pre-Amplifier
  225. cathode bias in OTL??
  226. 10y-IT-10Y SE amp
  227. Any schematics for balanced line driver using 6922?
  228. Would you buy EI EL509/EL519 in an Octal Package?
  229. A Noisey CAT SL1 Reference
  230. Plate color and getter
  231. Learning to interpret the performance curves for KT88
  232. 811A in P.S.E or P/P
  233. Quick help needed! LOTs of noise in BBMCCCS loaded /0A2 regulated preamp!
  234. power output calculations, rated power and required power output
  235. Please help with Stancor A-4416
  236. transformers, read me!!!!
  237. Source for archive cd of Sound Practices Magazine
  238. PSE with 6C41C
  239. cathode follower
  240. Orientation and Horizontal Mounting
  241. Newbie on cathode curves
  242. transformers, regulation, triode-connection...
  243. 1st tube project - newbie tranny question
  244. NOS supply
  245. AN7 prototype- variation?
  246. Help needed with 805 sets
  247. controlling heat in tube amps.
  248. Suround Tube Amp?
  249. PSUD Model Hack
  250. advice about project wanted (newbie)

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