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  1. Is there a 'Gainclone' Of the tube world?
  2. Line Amp Design review
  3. Looking for a very special project
  4. Designing a LC power supply
  5. psu caps
  6. Easiest CAD to learn to layout my chassis?
  7. newbie asks question :cathode biasing
  8. mr. pimm's ccs rev.3?
  9. Audio Research LS22 - Looking for schematics
  10. Beard P100
  11. shunt regulation??
  12. Vitamin Q VS Jensen
  13. Mystery Russian tube logo ?
  14. Counterpoint SA-7 Schematic
  15. Dual rectification off single sencondary transformer question
  16. Which preamp to choose for my ECC88s?
  17. looking for morgan jones phono amp schematic
  18. Amp for a beginner
  19. Question about direct coupling a anode follower into a cathode follower.
  20. On Line Tube Learning for newbies....
  21. EL34 Vs. EL84.......
  22. New DHT heater
  23. A Career in Tube Audio?
  24. Xicon Polypropylene Cap for Valve Amp
  25. ECC99 Heater / Cathode Max Volt
  26. Replacing Tubes
  27. schematics wanted please
  28. MCUTracer -- the missing code
  29. How do you double the voltage on a PSU?
  30. EL34 tubes to Proboi M50 amp
  31. ATH-W1000 headphones need amplifier
  32. g. pimm's rev3. and rev. 4 -6P1P/5687 ???
  33. New EL84 SE schemat.
  34. 32 NOS RCA 1644 (12L6-GT) Twin Pentode tubes
  35. reducing hum
  36. Lafayette LA-224
  37. Comments on RSD Tubes
  38. Tube heatsink
  39. wondering about direction
  40. An Ultra -linear question
  41. 5687 Preamp as I plan to build it.
  42. Hoekstra DC-Coupled 300B ... oooooh!
  43. 5687_6n1p_6p1p_gary pimm
  44. How lucky are we? TJ type 50 triode to be made. Make your preferences known now!
  45. Biasing DC heaters
  46. EL34 SE amp schematics
  47. Negative Voltage with Tube Rectification?
  48. Tube Amp on eBay
  49. Experiences with White CF/CCS CF output stage
  50. Holes in the anode plate?
  51. 5687 pre?
  52. tube design literature
  53. Trace Elliott schematic
  54. tube choice?
  55. Choke identity
  56. spotted this on ebay - 700w triodes anyone?
  57. HELP!!! for tube lovers
  58. How do you properly ground a Tamura OPT?
  59. Akihabara shopping
  60. Might be interested in this distortion thread
  61. PSE Active Loaded 12B4A anyone?
  62. Set 6080/6as7
  63. solid state just isn't doing it for me!!
  64. Where can I use this tubes
  65. Interesting math conundrum.
  66. schematic from this amp 45/717a/5u4..
  67. Strange Tube
  68. power supply help!!!!
  69. se tubeamp with px4
  70. Fixed bias PP questions
  71. Identifying Eico transformers
  72. metal shield
  73. why multi pins ?
  74. 2A3 PSE 'Arcadia' by SJS, or sorta
  75. John Swenson's (In my eyes revolutionary) preamp!
  76. tube opamps
  77. Help please with rare tube cd player
  78. OT impedance problem
  79. Amperex 6DJ8
  80. tiny amp
  81. 6C33 Internal Impedance (rp)?
  82. increasing o/p impedance to match IT??
  83. Grundig TK-60 Reel to Reel Questions
  84. Michaelson and Austin Oddysee
  85. 6gk6 tubes
  86. Anyone know anything about a 6AV5GA?
  87. A safe (?) DC coupled amp
  88. amp in trouble
  89. how to calculate lower operating point?
  90. Anyone on the tube forum ever heard a Bride Of Zen preamp?
  91. Audio Innovations 800 mk1
  92. Field of Dreams (a pair of FRT502 modulators)
  93. cathode follower
  94. ECC808- what is it more like?
  95. Help needed to find these rare values!
  96. New PP amp just completed - a few unusual features (long)
  97. MKP VS Electrolyte
  98. is 5mA too low???
  99. Dynaco FM3 220v-120v
  100. does plate current/voltage effect tube sound????
  101. Any opinions on the ECC81?
  102. #26 line stage help
  103. coupling caps? RTX vs Jupiter wax
  104. MC275 Hum Conundrum
  105. We91a
  106. Is 50 degrees C too hot?
  107. Using LEDs to bias grid voltage?
  108. DIY Hybride amplifiers
  109. wa i popped a tube lol
  110. 6C33C substitute
  111. Resistor popped...need help for replacement in Yaqin amp
  112. Check this eye candy out....
  113. Russian 5U4GB
  114. simple phono preamp circuit needed
  115. Black gate PS capacitors
  116. amp troubles
  117. Instruments Of Amplification - DIY
  118. my EL84 pre-amp with schematic
  119. Hammond AO29 to guitar amp?
  120. Radical (insane) PSU ideas
  121. First Tube Amp Considerations...
  122. hardcore tube night light?
  123. Frankenstein tube amp
  124. Can I use this tube?
  125. help for DHT bias in PP
  126. Multiple projects
  127. recommend operating point for EL84?
  128. First time builder, need advice.
  129. Tube Depot...
  130. schematics
  131. BOGEN MX60A Schematic
  132. Help with 1626 PSE Amp needed
  133. OTL question.
  134. diy tube amp
  135. Load line for CF
  136. DIY Vacuum tube amp
  137. Hammond or James OPT for SE 300B ?
  138. PSE 6550 schematic needed
  139. Schematic for Siemens "Table" Amplifier
  140. power supply for 6922 mu follower
  141. Dead simple tube circuit
  142. Any info on a Musical Fidelity X-Pre?
  143. Autoformer CF amp
  144. 2a3 or otl on an fullrange coral
  145. My New Project Completed
  146. SE el84
  147. Many thanks!
  148. Switching power supply & filament
  149. tube phono amp req'd
  150. Had a strange problem today...
  151. wsw siemens ultralinear 815 410 G !!?!
  152. Bottlehead Gear
  153. Amp, Stange temporary buzz, what is that?
  154. 2a3 schematic
  155. NEWBIE needs help-static in one channel of preamp
  156. Vintage speaker screw outs to 1/4" plug
  157. Flashing EL34
  158. Sovtek 2A3 tolerances / defected tube?
  159. Massive Parallel Operating
  160. filter circuit for 866a
  161. reasonable powered simple amp
  162. 6c19pi ?
  163. S5 Electronics 139 $ tube amp
  164. 12AU7 or 12AT7 instead of 12AX7 ?
  165. Tube Pre-Amp < $200
  166. Modification of 2A3 SE Circuit
  167. beta followers
  168. Q: Stereo Amp / Dual PS Chokes
  169. using Mosfets as diode in PS
  170. Sonic Frontiers Power 2SE
  171. Curcio daniel
  172. Ecc89 / Ecc189
  173. Magnavox
  174. Tube Preamp 'Clone' PCB copys on ebay (Marantz, McIntosh, etc)
  175. tube rectifier life expectancy
  176. Metal VS Glass
  177. does anybody know this transfo?
  178. need help finding tube make
  179. VTL deluxe 300 amps - adjustment question
  180. Building Marshall Plexi
  181. help converting conrad johnson MV-55 into triode!
  182. Does more tubes = more filter capacitors?
  183. 6V6 GT, Do they worth playing with them ??
  184. 12ax7 > 6sn7 > 300b
  185. calculating NFB dB
  186. PCL806 is equivalen to PCL86?
  187. anti digitalizing process
  188. Telefunken?
  189. Bogen MX30A
  190. base for amp
  191. Unbalanced - Balanced Tube Preamplifier wanted
  192. rusty iron- need help :)
  193. A new/old CCS?
  194. Rogers Cadet III - balance control
  195. Anyone tried Van Alstine's OmegaStar Bridge?
  196. Plasma/ion tweeters
  197. PP 6B4G stereo amp filament question
  198. tube tone control?
  199. trio amp up in smoke-ya really up
  200. Ideas for SE amp with this tube
  201. regulated PS - with Zener diode
  202. Filament voltage of PP2A3
  203. Dennis Boyle, Alliance Audio
  204. How do I replace this 40+ year old selenium rectifier?
  205. please advise on operating point of a 5687
  206. Output Transformer Question
  207. Stepped attenuator
  208. PP2A3 amp options
  209. Need advice: Want to learn Vacuum tubes
  210. AVO CT-160 --- Help
  211. Needed schematic....
  212. Az1 mounted on wood!
  213. Dynaco A450 specs
  214. Ecc186= SQ Ecc82
  215. tube amp kit on 230 v???
  216. some tubes
  217. ppp el84 fixed bias schematics
  218. Tube buffered NIGC trafo thoughs?
  219. driver stage
  220. PS cap placement/type
  221. Vintage OPT
  222. simple, single-ended project
  223. 6sn7 - 6bx7 - sv811-3 amp
  224. I look for a correct driver stage
  225. PCB tubes amp?
  226. XLR to 1/4" TRS?
  227. Umbilical Connector Suggestions
  228. Good Inexpensive Starter Amp Kit
  229. tube rectified preamp schematic
  230. oxygen free interconnects
  231. how to calculate feedback resistor
  232. Topaz Isolation Tranny
  233. 4E27A monster se amp??
  234. 6V6 Parafeed?
  235. Old Tranny Potting Material
  236. Brimar ECC81
  237. PCB mounting B7G sockets
  238. Directly heated cathodes, but why?
  239. SET kit for newbie
  240. High Power 805 Triode based amplifier
  241. DigitalSignalProcessing -&gt; future?
  242. 5v Damper Diode?
  243. Tubes in Class D amplifiers
  244. Universal power supply UIP-1 from former USSR schematics
  245. Building a fender twin reverb in the UK
  246. First project for Proac loudspeakers
  247. transformers
  248. cathode battery bias questions
  249. tube amp project
  250. AN DacKit 1.2 Upgrade Ideas

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