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  1. 6DJ8 preamp voltage?
  2. Diodes in Grid-Cathode Circuit
  3. To regulate or not?
  4. Odd tube behavior
  5. output txfr on cathode?
  6. tube preamp w/ XLR?
  7. ECC88 and PCC88 filament voltages
  8. Best tube choice for 1st SET project?
  9. Croft Vitale
  10. at last, amp finnished
  11. Silver micas as coupling caps?
  12. Valve-Heart Recording Studio
  13. Prototyping ( Breadboard ) Chassis Ideas and Suggestions
  14. old tubes
  15. where to place extra filter cap
  16. Troubleshooting a 6n1p linestage.
  17. 300BSE series
  18. Which triode is the best for preamp?
  19. AV8 and AV15 Vaic tubes
  20. Refridgerator trying to kill my Valve Amp
  21. When is capacitance making AC ripple a non-issue in B+ PS's?
  22. Quicksilver Bias Problem
  23. Looking for good book about phase split
  24. speaker protection fuse in Transcendent T8
  25. Shuguang Tube Factory(pics)
  26. "Pentodes for Dummies" needed.
  27. schematic for audio research classic 120 amps?
  28. Bouncing Ground
  29. Testing response....
  30. Impedance selection
  31. Heater To Cathode Potential
  32. uneven wound 50w OT 2 ideas...?
  33. 6B4G Amplifier Questions
  34. grounding heater/filament center
  35. Do I lose power when parafeeding?
  36. no ground problem
  37. Tube amp project
  38. bi-amping with gainclone + tubeamp
  39. Plitron/Vanderveen/KT88 Tube rectifier recommendation for 230mA?
  40. proposed 833 design
  41. Thyratron Circuit
  42. different phase invertors
  43. Tetrode or Pentode? / Tube info
  44. RECTIFIERLESS, is that possible?
  45. About high voltage regulated power supplies
  46. Stupid question about capacitors
  47. Time advanced error feedback correction
  48. My first tube amp
  49. copland 504
  50. 6D22S Damper Tubes
  51. resuscitating 60+ year old radio
  52. 6C45 in a phono amp? looks like this might be hot.
  53. quality of power supply
  54. Gassy Tube
  55. transformer coupling, magnetic amplifiers, grid leak current
  56. How low 6922/ECC88 can go?
  57. Question about PP EL34 power supply behaviour
  58. Tube amps and electric safety
  59. Transformer for a tube amp question
  60. Need some info on E88CC/6922
  61. strange "thing"
  62. Extra gain stage Marshall plexi 50watt
  63. Help with Hickok 539A tube tester repair..
  64. Micing tube amps
  65. Tube preamp huge DC thump!
  66. New speaker for transcendent T8
  67. choke winding
  68. MC phono preamp
  69. KYW's linestage (split from RIAA for life time)
  70. output transformer spice model
  71. cathode connection in directly heated triodes
  72. 50watt Plexi Again
  73. Anyone use ICs as input phase splitters for tube equipment
  74. Tube Sockets
  75. RIAA and Linestage for life time
  76. 211 Preamp
  77. Building a Marshall Plexi
  78. PL504 circuits.
  79. Tube Recommendation
  80. 6.3v 30A!?
  81. Simplest 6080 or 6AS7 OTL Project?
  82. Is 6N1P = 6N7 = ECC31
  83. EL34 in Pentode Class A?
  84. Wiring a 12au7
  85. BLue hue
  86. Choosing a suitable 50W cathode resistor
  87. 5687
  88. heathkit Schematic
  89. Precision S100 schematics?
  90. my RIAA stage. Any comment
  91. buffer circuits
  92. switchable 2.5k/5k primary ot
  93. Old grundig 3095 radio
  94. DIY Single Ended Triode Designs
  95. dog whistle
  96. Volume pot question
  97. Oil PP Cap
  98. commercial tube preamps
  99. Transformer Cover
  100. Harman-Kardon A-300 Amplifier
  101. Phono preamp- how to modify to get deeper LF?
  102. Thyratron heater supply?
  103. amp conversions
  104. Looking for Scott 200 photofacts or service manual
  105. 6ag7 metal pentodes
  106. EL84 Push-Pull Vieta A-225 opinion
  107. 5998 power amp question
  108. Which rectifier tube?
  109. tube preamp
  110. 6GT5 distortion problem
  111. tube preamps and gain
  112. Cathode Follower? Yay or nay?
  113. what the crap is this!?
  114. Safety Practices, General and Ultra-High Voltage
  115. Output transformer issues...
  116. Tube sockets with the same pin spacing as the tube
  117. Help needed with preamp.
  118. VSE RTP5 linestage comments
  119. VSE RTP5 linestage comments
  120. Futterman OTL ferrite bead specification
  121. common anode capacitor for both sections
  122. How good are cheap tranny-interstages
  123. Favorite bias measuring and metering methods?
  124. Suitable regulated/filtered 4volt battery-valve power supply suitable for 6+ valves?
  125. Newbie Transformer Secondary Combination Qs--Plitron Example
  126. Zenith Wavemagnet Help Please !!!
  127. Audio research vs55/VT50/VT100
  128. quad 6bm8 per channel
  129. Tubes from St.Petersburg, Russia?
  130. Tube preamplifier
  131. Seeking suggestions on slowing B+ turn on
  132. Help on Brute force
  133. 6SL7 or 12AX7 in Kimmel OTL
  134. What´s wrong with Hammond 1628SE?
  135. Input stages - to decouple B+ or not?
  136. valve info? NEC 30M-P25
  137. Recommended sources for SED EL 34s
  138. Golden Middle output transformers
  139. Help needed on tube rectification.
  140. NWWA DIY Audio Meet 2004
  141. Audio Research V70
  142. PSU choke value
  143. 4 Ohm on 25v Tap?
  144. The MDF amp chassis discusion reminds me...
  145. Tubed-out guitar affects
  146. SE used as step down OT
  147. Siemens E83f
  148. Enclosures in MDF.
  149. Tube tester and noise test
  150. Sovtek KT88 specifications not found :(
  151. Fisher 800C FM Stereo problem
  152. Soliciting Enthusiastic Recommendations for 50+WPC Kit or Design
  153. EL519/KT90 The old debate
  154. Plasma/ionic
  155. Another Fender on the bench.
  156. How much voltage won't kill me?
  157. Pcl84 / 15dq8
  158. Alliance Audio
  159. Opinions of Menno Vanderveen ( van der Veen ) PP Amps, Esp. Super-Triode
  160. Supertotem
  161. neon bulbs as grid voltage clamps
  162. Large caps in PSU without choke?
  163. Tube rectifier ?s
  164. resistors, capacitors, etc. NEED MORE INFO!
  165. Recitifaction is a pain in the butt? A few lame questions
  166. Hook-up Wire?
  167. Using Telefunken "Tank" transfomers for a single ended el84 amp?
  168. cathode follower with gain
  169. Got sparks in my GZ34!
  170. Duncans PSU designer and tube rectifier.
  171. I want to make a simple UL PP amp
  172. Phase splitter questions
  173. I want dizzy, why can't my speech show?
  174. I come from China, giving the same friends in a fondness for
  175. I come from China, giving the same friends in a fondness for
  176. Choke value?
  177. line voltage level
  178. SRPP & DACs
  179. Tube ageing ?
  180. Changing caps for preamp
  181. 845 PP and Lundahl 1620
  182. schematic for a push pull EL 509
  183. 6N1P preamp too much gain...
  184. Looking for a great DIY-Preamp for MICs (48v)
  185. Miniature 8pin socket
  186. Mesa Boogie Dual Caliber DC-3 schematic?
  187. Please help my MC240
  188. Hammond 125ese cheap in Europe?
  189. Critique for circuit of great value 805 SET?
  190. SE OPT's & Biasing
  191. Compact All-In-One Chassis Design with good ventilation. And low noise, Not a Schemat
  192. Newbie First Amp
  193. Audio Note P-2
  194. 300b?
  195. Power Supply and VR tube help!
  196. Tubes for direct-driving ESL
  197. Question about popping Noise
  198. tube preamp...opinions
  199. Help! I need TRW(UTC) O35 DATA
  200. Is this a good tube DIY kit to get?
  201. Best AC Heater Practices
  202. new hybrid amp turn on circuit
  203. dc phono
  204. screen-plate resistor and grid leak resistor
  205. Kr842vhd
  206. DRD 300b amplifier sound quality?
  207. Pre-amp selection
  208. tube buffer for TDA1543 based dac
  209. Does anybody know if a WE404 (5847) would be able...
  210. Transformer Question
  211. New preamp
  212. Fisher 800c neg bias problem
  213. Seek your comments on 71a tube amp
  214. Single-Ended 6V6 Questions
  215. El509 Plate current question
  216. Building a Pre-Amplifier
  217. cathode bias in OTL??
  218. 10y-IT-10Y SE amp
  219. Any schematics for balanced line driver using 6922?
  220. Would you buy EI EL509/EL519 in an Octal Package?
  221. A Noisey CAT SL1 Reference
  222. Plate color and getter
  223. Learning to interpret the performance curves for KT88
  224. 811A in P.S.E or P/P
  225. Quick help needed! LOTs of noise in BBMCCCS loaded /0A2 regulated preamp!
  226. power output calculations, rated power and required power output
  227. Please help with Stancor A-4416
  228. transformers, read me!!!!
  229. Source for archive cd of Sound Practices Magazine
  230. PSE with 6C41C
  231. cathode follower
  232. Orientation and Horizontal Mounting
  233. Newbie on cathode curves
  234. transformers, regulation, triode-connection...
  235. 1st tube project - newbie tranny question
  236. NOS supply
  237. AN7 prototype- variation?
  238. Help needed with 805 sets
  239. controlling heat in tube amps.
  240. Suround Tube Amp?
  241. PSUD Model Hack
  242. advice about project wanted (newbie)
  243. Newly CCS circuit from Pimm
  244. simple matching philosophy on tubes..
  245. A good source for PIO & HV Resistors??
  246. ARC SP8 schematic
  247. some questions...
  248. 6KD6 For OTL??
  249. Rogers Cadet III PU Adapter
  250. G2-driven 6BM8

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