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  1. Anyone got any opinions on this?
  2. My ForePlay Processor Controlled Preamp
  3. Tube ghetto blaster ?
  4. Help trouble shooting
  5. "The Fisher" tube amp 7189 output tubes
  6. UTC output transformers specs
  7. Regulation options for 807 g2
  8. My Mullard 5/20
  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. Inverted Interstage Transformer
  40. regarding to the design of iron-cored inductors (chokes)
  41. Trying to find an amp
  42. 12v tube output stage for cs43122 based dac?
  43. Wattages & Loudness: ?I'm Lost?
  44. cmrr of common cathode
  45. The Next Step. (and budget tube amplifier kits/designs).
  46. non-diy amplifiers with choke input power supplies
  47. Does a cathode bypass capacitor reduce hum?
  48. a tube convert tries a mosfet
  49. Motorboating in leak 20
  50. New MC preamp is comming alive
  51. HV tubes
  52. power supply pspice simulation problem
  53. Can a tube rectifier handle a C dual LC?
  54. Valve schematic & PC board design
  55. Just acqired some strange tubes.........
  56. Sovtek 6L6WXT
  57. RCA tubes, need info
  58. Stromberg Carlson 245M
  59. mounting tubes upside-down
  60. 6922 acting strange........or is it ?
  61. Naive CCS quesion
  62. DIY scrap tubebuffer with ECC88
  63. choke current rating
  64. Velleman K8010
  65. Tube mic preamp for speaker measurements
  66. 833a plate resistance ?
  67. second harmonic distortion
  68. Speakers not connected on tube amp, good or bad?
  69. different psu filter topologies ?
  70. Does anyone know this english amp ?
  71. kt88 power amplifier
  72. physical layout of 6B4G PP amp?
  73. Tube Life
  74. PSUD2 designer accuracy?
  75. Need advice on old 6bq5 amp...........
  76. rca83 rectifier precautions
  77. Multi chassis grounding scheme.
  78. 717a Datasheet
  79. 12B4 Battery Bias from (Preamp: Foreplay or 5687 or 12B4 )
  80. Need Six-pac amp schematic
  81. Any clue of how to use this part as a current sink for a CF?
  82. Tweeks on tubes - bring out the demagnetiserss
  83. Absolute. Best. Chassis. Ever.
  84. Zout adapted for 2 EL34 80W Va=560V
  85. load line - truth or fiction
  86. Best place to place bleeder resistor in a power supply?
  87. Pretty Tubes
  88. Preamp: Foreplay or 5687 or 12B4
  89. want to make otl with 6 tung-sol 6336a
  90. 6L6'S vs EL34's
  91. What can you tell me about Halldorson transformers
  92. CROFT OTL (APPARITION MODEL) Schematics
  93. Is there a 'Gainclone' Of the tube world?
  94. Line Amp Design review
  95. Looking for a very special project
  96. Designing a LC power supply
  97. Easiest CAD to learn to layout my chassis?
  98. newbie asks question :cathode biasing
  99. mr. pimm's ccs rev.3?
  100. Audio Research LS22 - Looking for schematics
  101. Beard P100
  102. shunt regulation??
  103. Vitamin Q VS Jensen
  104. Mystery Russian tube logo ?
  105. Counterpoint SA-7 Schematic
  106. Dual rectification off single sencondary transformer question
  107. Which preamp to choose for my ECC88s?
  108. looking for morgan jones phono amp schematic
  109. Amp for a beginner
  110. Question about direct coupling a anode follower into a cathode follower.
  111. On Line Tube Learning for newbies....
  112. EL34 Vs. EL84.......
  113. New DHT heater
  114. A Career in Tube Audio?
  115. Xicon Polypropylene Cap for Valve Amp
  116. ECC99 Heater / Cathode Max Volt
  117. Replacing Tubes
  118. schematics wanted please
  119. MCUTracer -- the missing code
  120. How do you double the voltage on a PSU?
  121. EL34 tubes to Proboi M50 amp
  122. ATH-W1000 headphones need amplifier
  123. g. pimm's rev3. and rev. 4 -6P1P/5687 ???
  124. New EL84 SE schemat.
  125. 32 NOS RCA 1644 (12L6-GT) Twin Pentode tubes
  126. reducing hum
  127. Lafayette LA-224
  128. Comments on RSD Tubes
  129. Tube heatsink
  130. wondering about direction
  131. An Ultra -linear question
  132. 5687 Preamp as I plan to build it.
  133. Hoekstra DC-Coupled 300B ... oooooh!
  134. 5687_6n1p_6p1p_gary pimm
  135. How lucky are we? TJ type 50 triode to be made. Make your preferences known now!
  136. Biasing DC heaters
  137. EL34 SE amp schematics
  138. Negative Voltage with Tube Rectification?
  139. Tube Amp on eBay
  140. Experiences with White CF/CCS CF output stage
  141. Holes in the anode plate?
  142. 5687 pre?
  143. tube design literature
  144. Trace Elliott schematic
  145. tube choice?
  146. Choke identity
  147. spotted this on ebay - 700w triodes anyone?
  148. HELP!!! for tube lovers
  149. How do you properly ground a Tamura OPT?
  150. Akihabara shopping
  151. Might be interested in this distortion thread
  152. PSE Active Loaded 12B4A anyone?
  153. Set 6080/6as7
  154. solid state just isn't doing it for me!!
  155. Where can I use this tubes
  156. Interesting math conundrum.
  157. schematic from this amp 45/717a/5u4..
  158. Strange Tube
  159. power supply help!!!!
  160. se tubeamp with px4
  161. Fixed bias PP questions
  162. Identifying Eico transformers
  163. metal shield
  164. why multi pins ?
  165. 2A3 PSE 'Arcadia' by SJS, or sorta
  166. John Swenson's (In my eyes revolutionary) preamp!
  167. tube opamps
  168. Help please with rare tube cd player
  169. OT impedance problem
  170. Amperex 6DJ8
  171. tiny amp
  172. 6C33 Internal Impedance (rp)?
  173. increasing o/p impedance to match IT??
  174. Grundig TK-60 Reel to Reel Questions
  175. Michaelson and Austin Oddysee
  176. 6gk6 tubes
  177. Anyone know anything about a 6AV5GA?
  178. A safe (?) DC coupled amp
  179. amp in trouble
  180. how to calculate lower operating point?
  181. Anyone on the tube forum ever heard a Bride Of Zen preamp?
  182. Audio Innovations 800 mk1
  183. Field of Dreams (a pair of FRT502 modulators)
  184. cathode follower
  185. ECC808- what is it more like?
  186. Help needed to find these rare values!
  187. New PP amp just completed - a few unusual features (long)
  188. MKP VS Electrolyte
  189. is 5mA too low???
  190. Dynaco FM3 220v-120v
  191. does plate current/voltage effect tube sound????
  192. Any opinions on the ECC81?
  193. #26 line stage help
  194. coupling caps? RTX vs Jupiter wax
  195. MC275 Hum Conundrum
  196. We91a
  197. Is 50 degrees C too hot?
  198. Using LEDs to bias grid voltage?
  199. DIY Hybride amplifiers
  200. wa i popped a tube lol
  201. 6C33C substitute
  202. Resistor popped...need help for replacement in Yaqin amp
  203. Check this eye candy out....
  204. Russian 5U4GB
  205. simple phono preamp circuit needed
  206. Black gate PS capacitors
  207. amp troubles
  208. Instruments Of Amplification - DIY
  209. my EL84 pre-amp with schematic
  210. Radical (insane) PSU ideas
  211. First Tube Amp Considerations...
  212. hardcore tube night light?
  213. Frankenstein tube amp
  214. Can I use this tube?
  215. help for DHT bias in PP
  216. Multiple projects
  217. recommend operating point for EL84?
  218. First time builder, need advice.
  219. Tube Depot...
  220. schematics
  221. BOGEN MX60A Schematic
  222. Help with 1626 PSE Amp needed
  223. OTL question.
  224. diy tube amp
  225. Load line for CF
  226. DIY Vacuum tube amp
  227. Hammond or James OPT for SE 300B ?
  228. PSE 6550 schematic needed
  229. Schematic for Siemens "Table" Amplifier
  230. power supply for 6922 mu follower
  231. Dead simple tube circuit
  232. Any info on a Musical Fidelity X-Pre?
  233. Autoformer CF amp
  234. 2a3 or otl on an fullrange coral
  235. My New Project Completed
  236. SE el84
  237. Many thanks!
  238. Switching power supply & filament
  239. tube phono amp req'd
  240. Had a strange problem today...
  241. wsw siemens ultralinear 815 410 G !!?!
  242. Bottlehead Gear
  243. Amp, Stange temporary buzz, what is that?
  244. 2a3 schematic
  245. NEWBIE needs help-static in one channel of preamp
  246. Vintage speaker screw outs to 1/4" plug
  247. Flashing EL34
  248. Sovtek 2A3 tolerances / defected tube?
  249. Massive Parallel Operating
  250. filter circuit for 866a

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