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  1. My ForePlay Processor Controlled Preamp
  2. Tube ghetto blaster ?
  3. Help trouble shooting
  4. "The Fisher" tube amp 7189 output tubes
  5. UTC output transformers specs
  6. Regulation options for 807 g2
  7. My Mullard 5/20
  8. Anyone tried Black Beauty caps??
  9. KT88 power amp
  10. High voltage regulator
  11. Filament voltage ?
  12. Unity Gain Unbalanced to Balanced Phase Splitter
  13. Anyone know the g1-g2 capacitance of 6AU6?
  14. Any good Transformer or Tube manufactureres in India ?
  15. McMartin MA-20?
  16. Help with Jolida 302A
  17. need 13fd7 curves
  18. Drd Kt88?
  19. miniature tube amp
  20. 300B pp schematic found, what about it?
  21. Tube Output Stage
  22. se otl
  23. Toroidals as OPTs?
  24. Tube advice
  25. Understanding OPT primary Z and load matching.
  26. help with Optomal placement of output transformers.
  27. 50h B26
  28. Anyone know what this is?? Strange tube/ bulb.
  29. Please ID output transformer
  30. Cheap and Easy Tube Phono Preamp
  31. Carbon film vs metal film resistors in a stepped attenuator?
  32. Alps pots vs. TKD pots? TKD worth the extra$$?
  33. Opamp as tube driver: Protection ideas?
  34. Looking for schematics CROFT OTL APPARITION
  35. ISO (new Tango) info...
  36. Noob Question on Driver Stages
  37. High Voltage Reference
  38. DIY valve amp
  39. JJ multisection caps
  40. Inverted Interstage Transformer
  41. regarding to the design of iron-cored inductors (chokes)
  42. Trying to find an amp
  43. 12v tube output stage for cs43122 based dac?
  44. Wattages & Loudness: ?I'm Lost?
  45. cmrr of common cathode
  46. The Next Step. (and budget tube amplifier kits/designs).
  47. non-diy amplifiers with choke input power supplies
  48. Does a cathode bypass capacitor reduce hum?
  49. a tube convert tries a mosfet
  50. Motorboating in leak 20
  51. New MC preamp is comming alive
  52. HV tubes
  53. power supply pspice simulation problem
  54. Can a tube rectifier handle a C dual LC?
  55. Valve schematic & PC board design
  56. Just acqired some strange tubes.........
  57. Sovtek 6L6WXT
  58. RCA tubes, need info
  59. Stromberg Carlson 245M
  60. mounting tubes upside-down
  61. 6922 acting strange........or is it ?
  62. Fender Champ: What Transformers?
  63. Naive CCS quesion
  64. DIY scrap tubebuffer with ECC88
  65. choke current rating
  66. Velleman K8010
  67. film vs. electrolytic
  68. Tube mic preamp for speaker measurements
  69. 833a plate resistance ?
  70. second harmonic distortion
  71. Speakers not connected on tube amp, good or bad?
  72. different psu filter topologies ?
  73. Does anyone know this english amp ?
  74. kt88 power amplifier
  75. physical layout of 6B4G PP amp?
  76. Tube Life
  77. PSUD2 designer accuracy?
  78. Need advice on old 6bq5 amp...........
  79. rca83 rectifier precautions
  80. Multi chassis grounding scheme.
  81. 717a Datasheet
  82. 12B4 Battery Bias from (Preamp: Foreplay or 5687 or 12B4 )
  83. Need Six-pac amp schematic
  84. Any clue of how to use this part as a current sink for a CF?
  85. Tweeks on tubes - bring out the demagnetiserss
  86. Absolute. Best. Chassis. Ever.
  87. Zout adapted for 2 EL34 80W Va=560V
  88. load line - truth or fiction
  89. Best place to place bleeder resistor in a power supply?
  90. Pretty Tubes
  91. Preamp: Foreplay or 5687 or 12B4
  92. want to make otl with 6 tung-sol 6336a
  93. 6L6'S vs EL34's
  94. What can you tell me about Halldorson transformers
  95. CROFT OTL (APPARITION MODEL) Schematics
  96. Is there a 'Gainclone' Of the tube world?
  97. Line Amp Design review
  98. Looking for a very special project
  99. Designing a LC power supply
  100. psu caps
  101. Easiest CAD to learn to layout my chassis?
  102. newbie asks question :cathode biasing
  103. mr. pimm's ccs rev.3?
  104. Audio Research LS22 - Looking for schematics
  105. Beard P100
  106. shunt regulation??
  107. Vitamin Q VS Jensen
  108. Mystery Russian tube logo ?
  109. Counterpoint SA-7 Schematic
  110. Dual rectification off single sencondary transformer question
  111. Which preamp to choose for my ECC88s?
  112. looking for morgan jones phono amp schematic
  113. Amp for a beginner
  114. Question about direct coupling a anode follower into a cathode follower.
  115. On Line Tube Learning for newbies....
  116. EL34 Vs. EL84.......
  117. New DHT heater
  118. A Career in Tube Audio?
  119. Xicon Polypropylene Cap for Valve Amp
  120. ECC99 Heater / Cathode Max Volt
  121. Replacing Tubes
  122. schematics wanted please
  123. MCUTracer -- the missing code
  124. How do you double the voltage on a PSU?
  125. EL34 tubes to Proboi M50 amp
  126. ATH-W1000 headphones need amplifier
  127. g. pimm's rev3. and rev. 4 -6P1P/5687 ???
  128. New EL84 SE schemat.
  129. 32 NOS RCA 1644 (12L6-GT) Twin Pentode tubes
  130. reducing hum
  131. Lafayette LA-224
  132. Comments on RSD Tubes
  133. Tube heatsink
  134. wondering about direction
  135. An Ultra -linear question
  136. 5687 Preamp as I plan to build it.
  137. Hoekstra DC-Coupled 300B ... oooooh!
  138. 5687_6n1p_6p1p_gary pimm
  139. How lucky are we? TJ type 50 triode to be made. Make your preferences known now!
  140. Biasing DC heaters
  141. EL34 SE amp schematics
  142. Negative Voltage with Tube Rectification?
  143. Tube Amp on eBay
  144. Experiences with White CF/CCS CF output stage
  145. Holes in the anode plate?
  146. 5687 pre?
  147. tube design literature
  148. Trace Elliott schematic
  149. tube choice?
  150. Choke identity
  151. spotted this on ebay - 700w triodes anyone?
  152. HELP!!! for tube lovers
  153. How do you properly ground a Tamura OPT?
  154. Akihabara shopping
  155. Might be interested in this distortion thread
  156. PSE Active Loaded 12B4A anyone?
  157. Set 6080/6as7
  158. solid state just isn't doing it for me!!
  159. Where can I use this tubes
  160. Interesting math conundrum.
  161. schematic from this amp 45/717a/5u4..
  162. Strange Tube
  163. power supply help!!!!
  164. se tubeamp with px4
  165. Fixed bias PP questions
  166. Identifying Eico transformers
  167. metal shield
  168. why multi pins ?
  169. 2A3 PSE 'Arcadia' by SJS, or sorta
  170. John Swenson's (In my eyes revolutionary) preamp!
  171. tube opamps
  172. Help please with rare tube cd player
  173. OT impedance problem
  174. Amperex 6DJ8
  175. tiny amp
  176. 6C33 Internal Impedance (rp)?
  177. increasing o/p impedance to match IT??
  178. Grundig TK-60 Reel to Reel Questions
  179. Michaelson and Austin Oddysee
  180. 6gk6 tubes
  181. Anyone know anything about a 6AV5GA?
  182. A safe (?) DC coupled amp
  183. amp in trouble
  184. how to calculate lower operating point?
  185. Anyone on the tube forum ever heard a Bride Of Zen preamp?
  186. Audio Innovations 800 mk1
  187. Field of Dreams (a pair of FRT502 modulators)
  188. cathode follower
  189. ECC808- what is it more like?
  190. Help needed to find these rare values!
  191. New PP amp just completed - a few unusual features (long)
  192. MKP VS Electrolyte
  193. is 5mA too low???
  194. Dynaco FM3 220v-120v
  195. does plate current/voltage effect tube sound????
  196. Any opinions on the ECC81?
  197. #26 line stage help
  198. coupling caps? RTX vs Jupiter wax
  199. MC275 Hum Conundrum
  200. We91a
  201. Is 50 degrees C too hot?
  202. Using LEDs to bias grid voltage?
  203. DIY Hybride amplifiers
  204. wa i popped a tube lol
  205. 6C33C substitute
  206. Resistor popped...need help for replacement in Yaqin amp
  207. Check this eye candy out....
  208. Russian 5U4GB
  209. simple phono preamp circuit needed
  210. Black gate PS capacitors
  211. amp troubles
  212. Instruments Of Amplification - DIY
  213. my EL84 pre-amp with schematic
  214. Hammond AO29 to guitar amp?
  215. Radical (insane) PSU ideas
  216. First Tube Amp Considerations...
  217. hardcore tube night light?
  218. Frankenstein tube amp
  219. Can I use this tube?
  220. help for DHT bias in PP
  221. Multiple projects
  222. recommend operating point for EL84?
  223. First time builder, need advice.
  224. Tube Depot...
  225. schematics
  226. BOGEN MX60A Schematic
  227. Help with 1626 PSE Amp needed
  228. OTL question.
  229. diy tube amp
  230. Load line for CF
  231. DIY Vacuum tube amp
  232. Hammond or James OPT for SE 300B ?
  233. PSE 6550 schematic needed
  234. Schematic for Siemens "Table" Amplifier
  235. power supply for 6922 mu follower
  236. Dead simple tube circuit
  237. Any info on a Musical Fidelity X-Pre?
  238. Autoformer CF amp
  239. 2a3 or otl on an fullrange coral
  240. My New Project Completed
  241. SE el84
  242. Many thanks!
  243. Switching power supply & filament
  244. tube phono amp req'd
  245. Had a strange problem today...
  246. wsw siemens ultralinear 815 410 G !!?!
  247. Bottlehead Gear
  248. Amp, Stange temporary buzz, what is that?
  249. 2a3 schematic
  250. NEWBIE needs help-static in one channel of preamp

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