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  1. Plitron/Vanderveen/KT88 Tube rectifier recommendation for 230mA?
  2. proposed 833 design
  3. Thyratron Circuit
  4. different phase invertors
  5. Tetrode or Pentode? / Tube info
  6. RECTIFIERLESS, is that possible?
  7. About high voltage regulated power supplies
  8. Stupid question about capacitors
  9. Time advanced error feedback correction
  10. My first tube amp
  11. copland 504
  12. 6D22S Damper Tubes
  13. resuscitating 60+ year old radio
  14. 6C45 in a phono amp? looks like this might be hot.
  15. quality of power supply
  16. Gassy Tube
  17. transformer coupling, magnetic amplifiers, grid leak current
  18. How low 6922/ECC88 can go?
  19. Question about PP EL34 power supply behaviour
  20. Tube amps and electric safety
  21. Transformer for a tube amp question
  22. Need some info on E88CC/6922
  23. strange "thing"
  24. Extra gain stage Marshall plexi 50watt
  25. Help with Hickok 539A tube tester repair..
  26. Micing tube amps
  27. Tube preamp huge DC thump!
  28. New speaker for transcendent T8
  29. choke winding
  30. MC phono preamp
  31. KYW's linestage (split from RIAA for life time)
  32. output transformer spice model
  33. cathode connection in directly heated triodes
  34. 50watt Plexi Again
  35. Anyone use ICs as input phase splitters for tube equipment
  36. Tube Sockets
  37. RIAA and Linestage for life time
  38. 211 Preamp
  39. Building a Marshall Plexi
  40. PL504 circuits.
  41. Tube Recommendation
  42. 6.3v 30A!?
  43. Simplest 6080 or 6AS7 OTL Project?
  44. Is 6N1P = 6N7 = ECC31
  45. EL34 in Pentode Class A?
  46. Wiring a 12au7
  47. BLue hue
  48. Choosing a suitable 50W cathode resistor
  49. 5687
  50. heathkit Schematic
  51. Precision S100 schematics?
  52. my RIAA stage. Any comment
  53. buffer circuits
  54. switchable 2.5k/5k primary ot
  55. Old grundig 3095 radio
  56. DIY Single Ended Triode Designs
  57. dog whistle
  58. Volume pot question
  59. Oil PP Cap
  60. commercial tube preamps
  61. Transformer Cover
  62. Harman-Kardon A-300 Amplifier
  63. Phono preamp- how to modify to get deeper LF?
  64. Thyratron heater supply?
  65. amp conversions
  66. Looking for Scott 200 photofacts or service manual
  67. 6ag7 metal pentodes
  68. EL84 Push-Pull Vieta A-225 opinion
  69. 5998 power amp question
  70. Which rectifier tube?
  71. tube preamp
  72. 6GT5 distortion problem
  73. tube preamps and gain
  74. Cathode Follower? Yay or nay?
  75. what the crap is this!?
  76. Safety Practices, General and Ultra-High Voltage
  77. Output transformer issues...
  78. Tube sockets with the same pin spacing as the tube
  79. Help needed with preamp.
  80. VSE RTP5 linestage comments
  81. VSE RTP5 linestage comments
  82. Futterman OTL ferrite bead specification
  83. common anode capacitor for both sections
  84. How good are cheap tranny-interstages
  85. Favorite bias measuring and metering methods?
  86. Suitable regulated/filtered 4volt battery-valve power supply suitable for 6+ valves?
  87. Newbie Transformer Secondary Combination Qs--Plitron Example
  88. Zenith Wavemagnet Help Please !!!
  89. Audio research vs55/VT50/VT100
  90. quad 6bm8 per channel
  91. Tubes from St.Petersburg, Russia?
  92. Tube preamplifier
  93. Seeking suggestions on slowing B+ turn on
  94. Help on Brute force
  95. 6SL7 or 12AX7 in Kimmel OTL
  96. What´s wrong with Hammond 1628SE?
  97. Input stages - to decouple B+ or not?
  98. valve info? NEC 30M-P25
  99. Recommended sources for SED EL 34s
  100. Golden Middle output transformers
  101. Help needed on tube rectification.
  102. NWWA DIY Audio Meet 2004
  103. Audio Research V70
  104. PSU choke value
  105. 4 Ohm on 25v Tap?
  106. The MDF amp chassis discusion reminds me...
  107. Tubed-out guitar affects
  108. SE used as step down OT
  109. Siemens E83f
  110. Enclosures in MDF.
  111. Tube tester and noise test
  112. Sovtek KT88 specifications not found :(
  113. Fisher 800C FM Stereo problem
  114. Soliciting Enthusiastic Recommendations for 50+WPC Kit or Design
  115. EL519/KT90 The old debate
  116. Plasma/ionic
  117. Another Fender on the bench.
  118. How much voltage won't kill me?
  119. Pcl84 / 15dq8
  120. Alliance Audio
  121. Opinions of Menno Vanderveen ( van der Veen ) PP Amps, Esp. Super-Triode
  122. Supertotem
  123. neon bulbs as grid voltage clamps
  124. Large caps in PSU without choke?
  125. Tube rectifier ?s
  126. resistors, capacitors, etc. NEED MORE INFO!
  127. Recitifaction is a pain in the butt? A few lame questions
  128. Hook-up Wire?
  129. Using Telefunken "Tank" transfomers for a single ended el84 amp?
  130. cathode follower with gain
  131. Got sparks in my GZ34!
  132. Duncans PSU designer and tube rectifier.
  133. I want to make a simple UL PP amp
  134. Phase splitter questions
  135. I want dizzy, why can't my speech show?
  136. I come from China, giving the same friends in a fondness for
  137. I come from China, giving the same friends in a fondness for
  138. Choke value?
  139. line voltage level
  140. SRPP & DACs
  141. Tube ageing ?
  142. Changing caps for preamp
  143. 845 PP and Lundahl 1620
  144. schematic for a push pull EL 509
  145. 6N1P preamp too much gain...
  146. Looking for a great DIY-Preamp for MICs (48v)
  147. Miniature 8pin socket
  148. Mesa Boogie Dual Caliber DC-3 schematic?
  149. Please help my MC240
  150. Hammond 125ese cheap in Europe?
  151. Critique for circuit of great value 805 SET?
  152. SE OPT's & Biasing
  153. Compact All-In-One Chassis Design with good ventilation. And low noise, Not a Schemat
  154. Newbie First Amp
  155. Audio Note P-2
  156. 300b?
  157. Power Supply and VR tube help!
  158. Tubes for direct-driving ESL
  159. Question about popping Noise
  160. tube preamp...opinions
  161. Help! I need TRW(UTC) O35 DATA
  162. Is this a good tube DIY kit to get?
  163. Best AC Heater Practices
  164. new hybrid amp turn on circuit
  165. dc phono
  166. screen-plate resistor and grid leak resistor
  167. Kr842vhd
  168. DRD 300b amplifier sound quality?
  169. Pre-amp selection
  170. tube buffer for TDA1543 based dac
  171. Does anybody know if a WE404 (5847) would be able...
  172. Transformer Question
  173. New preamp
  174. Fisher 800c neg bias problem
  175. Seek your comments on 71a tube amp
  176. Single-Ended 6V6 Questions
  177. El509 Plate current question
  178. Building a Pre-Amplifier
  179. cathode bias in OTL??
  180. 10y-IT-10Y SE amp
  181. Any schematics for balanced line driver using 6922?
  182. Would you buy EI EL509/EL519 in an Octal Package?
  183. A Noisey CAT SL1 Reference
  184. Plate color and getter
  185. Learning to interpret the performance curves for KT88
  186. 811A in P.S.E or P/P
  187. Quick help needed! LOTs of noise in BBMCCCS loaded /0A2 regulated preamp!
  188. power output calculations, rated power and required power output
  189. Please help with Stancor A-4416
  190. transformers, read me!!!!
  191. Source for archive cd of Sound Practices Magazine
  192. PSE with 6C41C
  193. cathode follower
  194. Orientation and Horizontal Mounting
  195. Newbie on cathode curves
  196. transformers, regulation, triode-connection...
  197. 1st tube project - newbie tranny question
  198. NOS supply
  199. AN7 prototype- variation?
  200. Help needed with 805 sets
  201. controlling heat in tube amps.
  202. Suround Tube Amp?
  203. PSUD Model Hack
  204. advice about project wanted (newbie)
  205. Newly CCS circuit from Pimm
  206. simple matching philosophy on tubes..
  207. A good source for PIO & HV Resistors??
  208. ARC SP8 schematic
  209. some questions...
  210. 6KD6 For OTL??
  211. Rogers Cadet III PU Adapter
  212. G2-driven 6BM8
  213. Appropiate cabling quality & Regulators
  214. Tubes.Ru
  215. Buy 6C33 in Canada, where?
  216. A simple OTL??
  217. Allan Kimmel OTL
  218. sansui au111 output transformer
  219. JJ capacitors
  220. How many rectifiers?
  221. Can I use LT1083 as a CCS load?
  222. What front end for PP - triode, pentode, mu-stage or differential triodes?
  223. Electro-Harmonix 6SN7EH
  224. hehe
  225. Any DHT PX25 DIY user here???
  226. 6216 beam pentode question
  227. comments on this design..
  228. Parallel single ended or push-pull?
  229. amp measurements
  230. Extremely low power first amp problem
  231. Are these Caps any good?
  232. ...in SE mode !
  233. Simple 6BM8 at Evolve Power Amps?
  234. Newbie needs help. Basic PSU design and choke question.
  235. Audio Innovations 800 (series 2)
  236. 12B4A PP schematic
  237. Breakdown between solder tags?
  238. Caps topology
  239. questions about tubeamp building
  240. Antonio Tucci
  241. Choke Load or WOT
  242. Amp identification wanted
  243. tubes or not..!
  244. Vitreous Enamel vs Wirewound Resistor
  245. Will Simple 5687 or Etude 12b4A drive headphones?
  246. For Info: We91 Fans
  247. Just finished my new 300B amp
  248. tape alignment hell
  249. caps for RIAA network
  250. tube based CCS

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