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  1. Help with VTL preamp...
  2. question about 811A and 572B
  3. Dual Stereo Cathode Folower Setup
  4. tube tester
  5. Audio Innovation 1000 SE
  6. 6as7 PP Schematic Help
  7. Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly
  8. 7591EH failure
  9. opt frequency response
  10. Anyone got any opinions on this?
  11. My ForePlay Processor Controlled Preamp
  12. Tube ghetto blaster ?
  13. Help trouble shooting
  14. "The Fisher" tube amp 7189 output tubes
  15. UTC output transformers specs
  16. Regulation options for 807 g2
  17. My Mullard 5/20
  18. Anyone tried Black Beauty caps??
  19. KT88 power amp
  20. High voltage regulator
  21. Filament voltage ?
  22. Unity Gain Unbalanced to Balanced Phase Splitter
  23. Anyone know the g1-g2 capacitance of 6AU6?
  24. Any good Transformer or Tube manufactureres in India ?
  25. McMartin MA-20?
  26. Help with Jolida 302A
  27. need 13fd7 curves
  28. Drd Kt88?
  29. miniature tube amp
  30. 300B pp schematic found, what about it?
  31. Tube Output Stage
  32. se otl
  33. Toroidals as OPTs?
  34. Tube advice
  35. Understanding OPT primary Z and load matching.
  36. help with Optomal placement of output transformers.
  37. 50h B26
  38. Anyone know what this is?? Strange tube/ bulb.
  39. Please ID output transformer
  40. Cheap and Easy Tube Phono Preamp
  41. Carbon film vs metal film resistors in a stepped attenuator?
  42. Alps pots vs. TKD pots? TKD worth the extra$$?
  43. Opamp as tube driver: Protection ideas?
  44. Looking for schematics CROFT OTL APPARITION
  45. ISO (new Tango) info...
  46. Noob Question on Driver Stages
  47. High Voltage Reference
  48. DIY valve amp
  49. JJ multisection caps
  50. Inverted Interstage Transformer
  51. regarding to the design of iron-cored inductors (chokes)
  52. Trying to find an amp
  53. 12v tube output stage for cs43122 based dac?
  54. Wattages & Loudness: ?I'm Lost?
  55. cmrr of common cathode
  56. The Next Step. (and budget tube amplifier kits/designs).
  57. non-diy amplifiers with choke input power supplies
  58. Does a cathode bypass capacitor reduce hum?
  59. a tube convert tries a mosfet
  60. Motorboating in leak 20
  61. New MC preamp is comming alive
  62. HV tubes
  63. power supply pspice simulation problem
  64. Can a tube rectifier handle a C dual LC?
  65. Valve schematic & PC board design
  66. Just acqired some strange tubes.........
  67. Sovtek 6L6WXT
  68. RCA tubes, need info
  69. Stromberg Carlson 245M
  70. mounting tubes upside-down
  71. 6922 acting strange........or is it ?
  72. Fender Champ: What Transformers?
  73. Naive CCS quesion
  74. DIY scrap tubebuffer with ECC88
  75. choke current rating
  76. Velleman K8010
  77. film vs. electrolytic
  78. Tube mic preamp for speaker measurements
  79. 833a plate resistance ?
  80. second harmonic distortion
  81. Speakers not connected on tube amp, good or bad?
  82. different psu filter topologies ?
  83. Does anyone know this english amp ?
  84. kt88 power amplifier
  85. physical layout of 6B4G PP amp?
  86. Tube Life
  87. PSUD2 designer accuracy?
  88. Need advice on old 6bq5 amp...........
  89. rca83 rectifier precautions
  90. Multi chassis grounding scheme.
  91. 717a Datasheet
  92. 12B4 Battery Bias from (Preamp: Foreplay or 5687 or 12B4 )
  93. Need Six-pac amp schematic
  94. Any clue of how to use this part as a current sink for a CF?
  95. Tweeks on tubes - bring out the demagnetiserss
  96. Absolute. Best. Chassis. Ever.
  97. Zout adapted for 2 EL34 80W Va=560V
  98. load line - truth or fiction
  99. Best place to place bleeder resistor in a power supply?
  100. Pretty Tubes
  101. Preamp: Foreplay or 5687 or 12B4
  102. want to make otl with 6 tung-sol 6336a
  103. 6L6'S vs EL34's
  104. What can you tell me about Halldorson transformers
  105. CROFT OTL (APPARITION MODEL) Schematics
  106. Is there a 'Gainclone' Of the tube world?
  107. Line Amp Design review
  108. Looking for a very special project
  109. Designing a LC power supply
  110. psu caps
  111. Easiest CAD to learn to layout my chassis?
  112. newbie asks question :cathode biasing
  113. mr. pimm's ccs rev.3?
  114. Audio Research LS22 - Looking for schematics
  115. Beard P100
  116. shunt regulation??
  117. Vitamin Q VS Jensen
  118. Mystery Russian tube logo ?
  119. Counterpoint SA-7 Schematic
  120. Dual rectification off single sencondary transformer question
  121. Which preamp to choose for my ECC88s?
  122. looking for morgan jones phono amp schematic
  123. Amp for a beginner
  124. Question about direct coupling a anode follower into a cathode follower.
  125. On Line Tube Learning for newbies....
  126. EL34 Vs. EL84.......
  127. New DHT heater
  128. A Career in Tube Audio?
  129. Xicon Polypropylene Cap for Valve Amp
  130. ECC99 Heater / Cathode Max Volt
  131. Replacing Tubes
  132. schematics wanted please
  133. MCUTracer -- the missing code
  134. How do you double the voltage on a PSU?
  135. EL34 tubes to Proboi M50 amp
  136. ATH-W1000 headphones need amplifier
  137. g. pimm's rev3. and rev. 4 -6P1P/5687 ???
  138. New EL84 SE schemat.
  139. 32 NOS RCA 1644 (12L6-GT) Twin Pentode tubes
  140. reducing hum
  141. Lafayette LA-224
  142. Comments on RSD Tubes
  143. Tube heatsink
  144. wondering about direction
  145. An Ultra -linear question
  146. 5687 Preamp as I plan to build it.
  147. Hoekstra DC-Coupled 300B ... oooooh!
  148. 5687_6n1p_6p1p_gary pimm
  149. How lucky are we? TJ type 50 triode to be made. Make your preferences known now!
  150. Biasing DC heaters
  151. EL34 SE amp schematics
  152. Negative Voltage with Tube Rectification?
  153. Tube Amp on eBay
  154. Experiences with White CF/CCS CF output stage
  155. Holes in the anode plate?
  156. 5687 pre?
  157. tube design literature
  158. Trace Elliott schematic
  159. tube choice?
  160. Choke identity
  161. spotted this on ebay - 700w triodes anyone?
  162. HELP!!! for tube lovers
  163. How do you properly ground a Tamura OPT?
  164. Akihabara shopping
  165. Might be interested in this distortion thread
  166. PSE Active Loaded 12B4A anyone?
  167. Set 6080/6as7
  168. solid state just isn't doing it for me!!
  169. Where can I use this tubes
  170. Interesting math conundrum.
  171. schematic from this amp 45/717a/5u4..
  172. Strange Tube
  173. power supply help!!!!
  174. se tubeamp with px4
  175. Fixed bias PP questions
  176. Identifying Eico transformers
  177. metal shield
  178. why multi pins ?
  179. 2A3 PSE 'Arcadia' by SJS, or sorta
  180. John Swenson's (In my eyes revolutionary) preamp!
  181. tube opamps
  182. Help please with rare tube cd player
  183. OT impedance problem
  184. Amperex 6DJ8
  185. tiny amp
  186. 6C33 Internal Impedance (rp)?
  187. increasing o/p impedance to match IT??
  188. Grundig TK-60 Reel to Reel Questions
  189. Michaelson and Austin Oddysee
  190. 6gk6 tubes
  191. Anyone know anything about a 6AV5GA?
  192. A safe (?) DC coupled amp
  193. amp in trouble
  194. how to calculate lower operating point?
  195. Anyone on the tube forum ever heard a Bride Of Zen preamp?
  196. Audio Innovations 800 mk1
  197. Field of Dreams (a pair of FRT502 modulators)
  198. cathode follower
  199. ECC808- what is it more like?
  200. Help needed to find these rare values!
  201. New PP amp just completed - a few unusual features (long)
  202. MKP VS Electrolyte
  203. is 5mA too low???
  204. Dynaco FM3 220v-120v
  205. does plate current/voltage effect tube sound????
  206. Any opinions on the ECC81?
  207. #26 line stage help
  208. coupling caps? RTX vs Jupiter wax
  209. MC275 Hum Conundrum
  210. We91a
  211. Is 50 degrees C too hot?
  212. Using LEDs to bias grid voltage?
  213. DIY Hybride amplifiers
  214. wa i popped a tube lol
  215. 6C33C substitute
  216. Resistor popped...need help for replacement in Yaqin amp
  217. Check this eye candy out....
  218. Russian 5U4GB
  219. simple phono preamp circuit needed
  220. Black gate PS capacitors
  221. amp troubles
  222. Instruments Of Amplification - DIY
  223. my EL84 pre-amp with schematic
  224. Hammond AO29 to guitar amp?
  225. Radical (insane) PSU ideas
  226. First Tube Amp Considerations...
  227. hardcore tube night light?
  228. Frankenstein tube amp
  229. Can I use this tube?
  230. help for DHT bias in PP
  231. Multiple projects
  232. recommend operating point for EL84?
  233. First time builder, need advice.
  234. Tube Depot...
  235. schematics
  236. BOGEN MX60A Schematic
  237. Help with 1626 PSE Amp needed
  238. OTL question.
  239. diy tube amp
  240. Load line for CF
  241. DIY Vacuum tube amp
  242. Hammond or James OPT for SE 300B ?
  243. PSE 6550 schematic needed
  244. Schematic for Siemens "Table" Amplifier
  245. power supply for 6922 mu follower
  246. Dead simple tube circuit
  247. Any info on a Musical Fidelity X-Pre?
  248. Autoformer CF amp
  249. 2a3 or otl on an fullrange coral
  250. My New Project Completed

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