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  1. HV tubes
  2. power supply pspice simulation problem
  3. Can a tube rectifier handle a C dual LC?
  4. Valve schematic & PC board design
  5. Just acqired some strange tubes.........
  6. Sovtek 6L6WXT
  7. RCA tubes, need info
  8. Stromberg Carlson 245M
  9. mounting tubes upside-down
  10. 6922 acting strange........or is it ?
  11. Naive CCS quesion
  12. DIY scrap tubebuffer with ECC88
  13. choke current rating
  14. Velleman K8010
  15. Tube mic preamp for speaker measurements
  16. 833a plate resistance ?
  17. second harmonic distortion
  18. Speakers not connected on tube amp, good or bad?
  19. different psu filter topologies ?
  20. Does anyone know this english amp ?
  21. kt88 power amplifier
  22. physical layout of 6B4G PP amp?
  23. Tube Life
  24. PSUD2 designer accuracy?
  25. Need advice on old 6bq5 amp...........
  26. rca83 rectifier precautions
  27. Multi chassis grounding scheme.
  28. 717a Datasheet
  29. 12B4 Battery Bias from (Preamp: Foreplay or 5687 or 12B4 )
  30. Need Six-pac amp schematic
  31. Any clue of how to use this part as a current sink for a CF?
  32. Tweeks on tubes - bring out the demagnetiserss
  33. Absolute. Best. Chassis. Ever.
  34. Zout adapted for 2 EL34 80W Va=560V
  35. load line - truth or fiction
  36. Best place to place bleeder resistor in a power supply?
  37. Pretty Tubes
  38. Preamp: Foreplay or 5687 or 12B4
  39. want to make otl with 6 tung-sol 6336a
  40. 6L6'S vs EL34's
  41. What can you tell me about Halldorson transformers
  42. CROFT OTL (APPARITION MODEL) Schematics
  43. Is there a 'Gainclone' Of the tube world?
  44. Line Amp Design review
  45. Looking for a very special project
  46. Designing a LC power supply
  47. Easiest CAD to learn to layout my chassis?
  48. newbie asks question :cathode biasing
  49. mr. pimm's ccs rev.3?
  50. Audio Research LS22 - Looking for schematics
  51. Beard P100
  52. shunt regulation??
  53. Vitamin Q VS Jensen
  54. Mystery Russian tube logo ?
  55. Counterpoint SA-7 Schematic
  56. Dual rectification off single sencondary transformer question
  57. Which preamp to choose for my ECC88s?
  58. looking for morgan jones phono amp schematic
  59. Amp for a beginner
  60. Question about direct coupling a anode follower into a cathode follower.
  61. On Line Tube Learning for newbies....
  62. EL34 Vs. EL84.......
  63. New DHT heater
  64. A Career in Tube Audio?
  65. Xicon Polypropylene Cap for Valve Amp
  66. ECC99 Heater / Cathode Max Volt
  67. Replacing Tubes
  68. schematics wanted please
  69. MCUTracer -- the missing code
  70. How do you double the voltage on a PSU?
  71. EL34 tubes to Proboi M50 amp
  72. ATH-W1000 headphones need amplifier
  73. g. pimm's rev3. and rev. 4 -6P1P/5687 ???
  74. New EL84 SE schemat.
  75. 32 NOS RCA 1644 (12L6-GT) Twin Pentode tubes
  76. reducing hum
  77. Lafayette LA-224
  78. Comments on RSD Tubes
  79. Tube heatsink
  80. wondering about direction
  81. An Ultra -linear question
  82. 5687 Preamp as I plan to build it.
  83. Hoekstra DC-Coupled 300B ... oooooh!
  84. 5687_6n1p_6p1p_gary pimm
  85. How lucky are we? TJ type 50 triode to be made. Make your preferences known now!
  86. Biasing DC heaters
  87. EL34 SE amp schematics
  88. Negative Voltage with Tube Rectification?
  89. Tube Amp on eBay
  90. Experiences with White CF/CCS CF output stage
  91. Holes in the anode plate?
  92. 5687 pre?
  93. tube design literature
  94. Trace Elliott schematic
  95. tube choice?
  96. Choke identity
  97. spotted this on ebay - 700w triodes anyone?
  98. HELP!!! for tube lovers
  99. How do you properly ground a Tamura OPT?
  100. Akihabara shopping
  101. Might be interested in this distortion thread
  102. PSE Active Loaded 12B4A anyone?
  103. Set 6080/6as7
  104. solid state just isn't doing it for me!!
  105. Where can I use this tubes
  106. Interesting math conundrum.
  107. schematic from this amp 45/717a/5u4..
  108. Strange Tube
  109. power supply help!!!!
  110. se tubeamp with px4
  111. Fixed bias PP questions
  112. Identifying Eico transformers
  113. metal shield
  114. why multi pins ?
  115. 2A3 PSE 'Arcadia' by SJS, or sorta
  116. John Swenson's (In my eyes revolutionary) preamp!
  117. tube opamps
  118. Help please with rare tube cd player
  119. OT impedance problem
  120. Amperex 6DJ8
  121. tiny amp
  122. 6C33 Internal Impedance (rp)?
  123. increasing o/p impedance to match IT??
  124. Grundig TK-60 Reel to Reel Questions
  125. Michaelson and Austin Oddysee
  126. 6gk6 tubes
  127. Anyone know anything about a 6AV5GA?
  128. A safe (?) DC coupled amp
  129. amp in trouble
  130. how to calculate lower operating point?
  131. Anyone on the tube forum ever heard a Bride Of Zen preamp?
  132. Audio Innovations 800 mk1
  133. Field of Dreams (a pair of FRT502 modulators)
  134. cathode follower
  135. ECC808- what is it more like?
  136. Help needed to find these rare values!
  137. New PP amp just completed - a few unusual features (long)
  138. MKP VS Electrolyte
  139. is 5mA too low???
  140. Dynaco FM3 220v-120v
  141. does plate current/voltage effect tube sound????
  142. Any opinions on the ECC81?
  143. #26 line stage help
  144. MC275 Hum Conundrum
  145. We91a
  146. Is 50 degrees C too hot?
  147. Using LEDs to bias grid voltage?
  148. DIY Hybride amplifiers
  149. wa i popped a tube lol
  150. 6C33C substitute
  151. Resistor popped...need help for replacement in Yaqin amp
  152. Check this eye candy out....
  153. Russian 5U4GB
  154. simple phono preamp circuit needed
  155. Black gate PS capacitors
  156. amp troubles
  157. Instruments Of Amplification - DIY
  158. my EL84 pre-amp with schematic
  159. Radical (insane) PSU ideas
  160. First Tube Amp Considerations...
  161. hardcore tube night light?
  162. Frankenstein tube amp
  163. Can I use this tube?
  164. help for DHT bias in PP
  165. Multiple projects
  166. recommend operating point for EL84?
  167. First time builder, need advice.
  168. Tube Depot...
  169. schematics
  170. BOGEN MX60A Schematic
  171. Help with 1626 PSE Amp needed
  172. OTL question.
  173. diy tube amp
  174. Load line for CF
  175. DIY Vacuum tube amp
  176. Hammond or James OPT for SE 300B ?
  177. PSE 6550 schematic needed
  178. Schematic for Siemens "Table" Amplifier
  179. power supply for 6922 mu follower
  180. Dead simple tube circuit
  181. Any info on a Musical Fidelity X-Pre?
  182. Autoformer CF amp
  183. 2a3 or otl on an fullrange coral
  184. My New Project Completed
  185. SE el84
  186. Many thanks!
  187. Switching power supply & filament
  188. tube phono amp req'd
  189. Had a strange problem today...
  190. wsw siemens ultralinear 815 410 G !!?!
  191. Bottlehead Gear
  192. Amp, Stange temporary buzz, what is that?
  193. 2a3 schematic
  194. NEWBIE needs help-static in one channel of preamp
  195. Vintage speaker screw outs to 1/4" plug
  196. Flashing EL34
  197. Sovtek 2A3 tolerances / defected tube?
  198. Massive Parallel Operating
  199. filter circuit for 866a
  200. reasonable powered simple amp
  201. 6c19pi ?
  202. S5 Electronics 139 $ tube amp
  203. 12AU7 or 12AT7 instead of 12AX7 ?
  204. Tube Pre-Amp < $200
  205. Modification of 2A3 SE Circuit
  206. beta followers
  207. Q: Stereo Amp / Dual PS Chokes
  208. using Mosfets as diode in PS
  209. Sonic Frontiers Power 2SE
  210. Curcio daniel
  211. Ecc89 / Ecc189
  212. Magnavox
  213. Tube Preamp 'Clone' PCB copys on ebay (Marantz, McIntosh, etc)
  214. tube rectifier life expectancy
  215. Metal VS Glass
  216. does anybody know this transfo?
  217. need help finding tube make
  218. VTL deluxe 300 amps - adjustment question
  219. help converting conrad johnson MV-55 into triode!
  220. Does more tubes = more filter capacitors?
  221. 6V6 GT, Do they worth playing with them ??
  222. 12ax7 > 6sn7 > 300b
  223. calculating NFB dB
  224. PCL806 is equivalen to PCL86?
  225. anti digitalizing process
  226. Telefunken?
  227. Bogen MX30A
  228. base for amp
  229. Unbalanced - Balanced Tube Preamplifier wanted
  230. rusty iron- need help :)
  231. A new/old CCS?
  232. Rogers Cadet III - balance control
  233. Anyone tried Van Alstine's OmegaStar Bridge?
  234. Plasma/ion tweeters
  235. PP 6B4G stereo amp filament question
  236. tube tone control?
  237. trio amp up in smoke-ya really up
  238. Ideas for SE amp with this tube
  239. regulated PS - with Zener diode
  240. Filament voltage of PP2A3
  241. Dennis Boyle, Alliance Audio
  242. How do I replace this 40+ year old selenium rectifier?
  243. please advise on operating point of a 5687
  244. Output Transformer Question
  245. Stepped attenuator
  246. PP2A3 amp options
  247. Need advice: Want to learn Vacuum tubes
  248. AVO CT-160 --- Help
  249. Needed schematic....
  250. Az1 mounted on wood!

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