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  1. Does a cathode bypass capacitor reduce hum?
  2. a tube convert tries a mosfet
  3. Motorboating in leak 20
  4. New MC preamp is comming alive
  5. HV tubes
  6. power supply pspice simulation problem
  7. Can a tube rectifier handle a C dual LC?
  8. Valve schematic & PC board design
  9. Just acqired some strange tubes.........
  10. Sovtek 6L6WXT
  11. RCA tubes, need info
  12. Stromberg Carlson 245M
  13. mounting tubes upside-down
  14. 6922 acting strange........or is it ?
  15. Fender Champ: What Transformers?
  16. Naive CCS quesion
  17. DIY scrap tubebuffer with ECC88
  18. choke current rating
  19. Velleman K8010
  20. film vs. electrolytic
  21. Tube mic preamp for speaker measurements
  22. 833a plate resistance ?
  23. second harmonic distortion
  24. Speakers not connected on tube amp, good or bad?
  25. different psu filter topologies ?
  26. Does anyone know this english amp ?
  27. kt88 power amplifier
  28. physical layout of 6B4G PP amp?
  29. Tube Life
  30. PSUD2 designer accuracy?
  31. Need advice on old 6bq5 amp...........
  32. rca83 rectifier precautions
  33. Multi chassis grounding scheme.
  34. 717a Datasheet
  35. 12B4 Battery Bias from (Preamp: Foreplay or 5687 or 12B4 )
  36. Need Six-pac amp schematic
  37. Any clue of how to use this part as a current sink for a CF?
  38. Tweeks on tubes - bring out the demagnetiserss
  39. Absolute. Best. Chassis. Ever.
  40. Zout adapted for 2 EL34 80W Va=560V
  41. load line - truth or fiction
  42. Best place to place bleeder resistor in a power supply?
  43. Pretty Tubes
  44. Preamp: Foreplay or 5687 or 12B4
  45. want to make otl with 6 tung-sol 6336a
  46. 6L6'S vs EL34's
  47. What can you tell me about Halldorson transformers
  48. CROFT OTL (APPARITION MODEL) Schematics
  49. Is there a 'Gainclone' Of the tube world?
  50. Line Amp Design review
  51. Looking for a very special project
  52. Designing a LC power supply
  53. psu caps
  54. Easiest CAD to learn to layout my chassis?
  55. newbie asks question :cathode biasing
  56. mr. pimm's ccs rev.3?
  57. Audio Research LS22 - Looking for schematics
  58. Beard P100
  59. shunt regulation??
  60. Vitamin Q VS Jensen
  61. Mystery Russian tube logo ?
  62. Counterpoint SA-7 Schematic
  63. Dual rectification off single sencondary transformer question
  64. Which preamp to choose for my ECC88s?
  65. looking for morgan jones phono amp schematic
  66. Amp for a beginner
  67. Question about direct coupling a anode follower into a cathode follower.
  68. On Line Tube Learning for newbies....
  69. EL34 Vs. EL84.......
  70. New DHT heater
  71. A Career in Tube Audio?
  72. Xicon Polypropylene Cap for Valve Amp
  73. ECC99 Heater / Cathode Max Volt
  74. Replacing Tubes
  75. schematics wanted please
  76. MCUTracer -- the missing code
  77. How do you double the voltage on a PSU?
  78. EL34 tubes to Proboi M50 amp
  79. ATH-W1000 headphones need amplifier
  80. g. pimm's rev3. and rev. 4 -6P1P/5687 ???
  81. New EL84 SE schemat.
  82. 32 NOS RCA 1644 (12L6-GT) Twin Pentode tubes
  83. reducing hum
  84. Lafayette LA-224
  85. Comments on RSD Tubes
  86. Tube heatsink
  87. wondering about direction
  88. An Ultra -linear question
  89. 5687 Preamp as I plan to build it.
  90. Hoekstra DC-Coupled 300B ... oooooh!
  91. 5687_6n1p_6p1p_gary pimm
  92. How lucky are we? TJ type 50 triode to be made. Make your preferences known now!
  93. Biasing DC heaters
  94. EL34 SE amp schematics
  95. Negative Voltage with Tube Rectification?
  96. Tube Amp on eBay
  97. Experiences with White CF/CCS CF output stage
  98. Holes in the anode plate?
  99. 5687 pre?
  100. tube design literature
  101. Trace Elliott schematic
  102. tube choice?
  103. Choke identity
  104. spotted this on ebay - 700w triodes anyone?
  105. HELP!!! for tube lovers
  106. How do you properly ground a Tamura OPT?
  107. Akihabara shopping
  108. Might be interested in this distortion thread
  109. PSE Active Loaded 12B4A anyone?
  110. Set 6080/6as7
  111. solid state just isn't doing it for me!!
  112. Where can I use this tubes
  113. Interesting math conundrum.
  114. schematic from this amp 45/717a/5u4..
  115. Strange Tube
  116. power supply help!!!!
  117. se tubeamp with px4
  118. Fixed bias PP questions
  119. Identifying Eico transformers
  120. metal shield
  121. why multi pins ?
  122. 2A3 PSE 'Arcadia' by SJS, or sorta
  123. John Swenson's (In my eyes revolutionary) preamp!
  124. tube opamps
  125. Help please with rare tube cd player
  126. OT impedance problem
  127. Amperex 6DJ8
  128. tiny amp
  129. 6C33 Internal Impedance (rp)?
  130. increasing o/p impedance to match IT??
  131. Grundig TK-60 Reel to Reel Questions
  132. Michaelson and Austin Oddysee
  133. 6gk6 tubes
  134. Anyone know anything about a 6AV5GA?
  135. A safe (?) DC coupled amp
  136. amp in trouble
  137. how to calculate lower operating point?
  138. Anyone on the tube forum ever heard a Bride Of Zen preamp?
  139. Audio Innovations 800 mk1
  140. Field of Dreams (a pair of FRT502 modulators)
  141. cathode follower
  142. ECC808- what is it more like?
  143. Help needed to find these rare values!
  144. New PP amp just completed - a few unusual features (long)
  145. MKP VS Electrolyte
  146. is 5mA too low???
  147. Dynaco FM3 220v-120v
  148. does plate current/voltage effect tube sound????
  149. Any opinions on the ECC81?
  150. #26 line stage help
  151. coupling caps? RTX vs Jupiter wax
  152. MC275 Hum Conundrum
  153. We91a
  154. Is 50 degrees C too hot?
  155. Using LEDs to bias grid voltage?
  156. DIY Hybride amplifiers
  157. wa i popped a tube lol
  158. 6C33C substitute
  159. Resistor popped...need help for replacement in Yaqin amp
  160. Check this eye candy out....
  161. Russian 5U4GB
  162. simple phono preamp circuit needed
  163. Black gate PS capacitors
  164. amp troubles
  165. Instruments Of Amplification - DIY
  166. my EL84 pre-amp with schematic
  167. Hammond AO29 to guitar amp?
  168. Radical (insane) PSU ideas
  169. First Tube Amp Considerations...
  170. hardcore tube night light?
  171. Frankenstein tube amp
  172. Can I use this tube?
  173. help for DHT bias in PP
  174. Multiple projects
  175. recommend operating point for EL84?
  176. First time builder, need advice.
  177. Tube Depot...
  178. schematics
  179. BOGEN MX60A Schematic
  180. Help with 1626 PSE Amp needed
  181. OTL question.
  182. diy tube amp
  183. Load line for CF
  184. DIY Vacuum tube amp
  185. Hammond or James OPT for SE 300B ?
  186. PSE 6550 schematic needed
  187. Schematic for Siemens "Table" Amplifier
  188. power supply for 6922 mu follower
  189. Dead simple tube circuit
  190. Any info on a Musical Fidelity X-Pre?
  191. Autoformer CF amp
  192. 2a3 or otl on an fullrange coral
  193. My New Project Completed
  194. SE el84
  195. Many thanks!
  196. Switching power supply & filament
  197. tube phono amp req'd
  198. Had a strange problem today...
  199. wsw siemens ultralinear 815 410 G !!?!
  200. Bottlehead Gear
  201. Amp, Stange temporary buzz, what is that?
  202. 2a3 schematic
  203. NEWBIE needs help-static in one channel of preamp
  204. Vintage speaker screw outs to 1/4" plug
  205. Flashing EL34
  206. Sovtek 2A3 tolerances / defected tube?
  207. Massive Parallel Operating
  208. filter circuit for 866a
  209. reasonable powered simple amp
  210. 6c19pi ?
  211. S5 Electronics 139 $ tube amp
  212. 12AU7 or 12AT7 instead of 12AX7 ?
  213. Tube Pre-Amp < $200
  214. Modification of 2A3 SE Circuit
  215. beta followers
  216. Q: Stereo Amp / Dual PS Chokes
  217. using Mosfets as diode in PS
  218. Sonic Frontiers Power 2SE
  219. Curcio daniel
  220. Ecc89 / Ecc189
  221. Magnavox
  222. Tube Preamp 'Clone' PCB copys on ebay (Marantz, McIntosh, etc)
  223. tube rectifier life expectancy
  224. Metal VS Glass
  225. does anybody know this transfo?
  226. need help finding tube make
  227. VTL deluxe 300 amps - adjustment question
  228. Building Marshall Plexi
  229. help converting conrad johnson MV-55 into triode!
  230. Does more tubes = more filter capacitors?
  231. 6V6 GT, Do they worth playing with them ??
  232. 12ax7 > 6sn7 > 300b
  233. calculating NFB dB
  234. PCL806 is equivalen to PCL86?
  235. anti digitalizing process
  236. Telefunken?
  237. Bogen MX30A
  238. base for amp
  239. Unbalanced - Balanced Tube Preamplifier wanted
  240. rusty iron- need help :)
  241. A new/old CCS?
  242. Rogers Cadet III - balance control
  243. Anyone tried Van Alstine's OmegaStar Bridge?
  244. Plasma/ion tweeters
  245. PP 6B4G stereo amp filament question
  246. tube tone control?
  247. trio amp up in smoke-ya really up
  248. Ideas for SE amp with this tube
  249. regulated PS - with Zener diode
  250. Filament voltage of PP2A3

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