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  1. perhaps an INSANE query...
  2. Possible to estimate transformer specs?
  3. 9 pin replacement sockets
  4. Bench PSU
  5. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  6. Joke of the day
  7. $300 tube amp budget. Which Amp??
  8. Simple Linestage for 27 or 1H5?
  9. Foreplay III pre amp
  10. Fixing this 100TH
  11. I have some 5654
  12. Multisegment capacitor replacement help.
  13. Amplifer calculation
  14. Auto Bias?
  15. Se KT88 with Quad ESL
  16. Parts from Salvage
  17. power supply question.... too many Volts?
  18. Now wouldn’t this make an awesome monoblock.
  19. Please,help me for schematics!!
  20. Kofi Annan in: "Open for Suggestion"
  21. What connector for 300vDC DOMESTIC environment?
  22. looking for help in transformers.
  23. problems with 805 tubes
  24. Audio Research D-90
  25. Replacing a 12AU7 in a cathode-follower.
  26. Original Dynaco 70 circuit mods/upgrades?
  27. is there a power supply unit for prototyping?
  28. Power Supply Design and Blocking
  29. OTL questions
  30. PP- which input/splitter topology??
  31. Cathode feedback and DHTs
  32. How should Dick Olsher Blue Velvet measure??
  33. Info on Melos MA-111?
  34. Aikido with dual personality
  35. Making a hole for AC socket in a chassis
  36. Liteaudio LS31 preamp pcb
  37. Thoughts on Quad II output topology
  38. HF-85 Rebuild advice
  39. Cheap Williamson amp kit
  40. Mr. Liang audio amplifiers
  41. plate ccs
  42. DC Huuuummmmmm
  43. Hey Gingertube - trying to debug Baby Huey
  44. question about nOrh SE 9 amp for FE207E
  45. Arc D150
  46. help identify this "cleartop 6550"
  47. Cheap emergency gold sockets
  48. Is Western Electric for Real? KT88 Scam?
  49. Russian 635P?
  50. Swinging Choke or Smoothing Choke
  51. Amp de-bugging
  52. SMPS for B+ from PC PS
  53. Placement of tone stacks
  54. Rectify AC to DC for heating
  55. KT88 in class B
  56. 6FE5 Ultralinear?
  57. OPT -the good, the bad or the ugly ??
  58. Switching power supply for tube-pre
  59. Using a zener to drop plate+screen voltages
  60. Will this circuit work?
  61. Ei 6CW5, any users?
  62. Simple tube preamp?
  63. push-pull and primary impedance
  64. DIY : SWR Interstellar OverDrive (bass preamp)
  65. sound valves m-40 schematics
  66. series connection of filament in push pull output stage
  67. Has anybody built this amp?
  68. Red Light District Amp Screen Reg
  69. AEG rectifier
  70. Gm emulator for calibration
  71. Greetings and a couple of questions
  72. Tubes in a chip amp power stage??
  73. Yaqin MC-10L Preamp Tubes
  74. Sound of paralleld EL84
  75. Preamp Question
  76. WTH -- UL back to triode connection
  77. $139 tube amp but cant remember where i saw it...
  78. better 6au6 alternative
  79. type 40 triode curves
  80. Cap size for Hg Rectifiers
  81. Anybody have experience building an OTL amp?
  82. measuring hum
  83. Nytone SA2000
  84. Inter stage iron in High End
  85. very peculiar psu problem
  86. 12A6 Healthkit A7 Amp
  87. testing a 13E1
  88. JE Labs / Arnold Cruz 2A3 amp - Q
  89. 5842 grounded grid
  90. Russian RF Double Tetrodes
  91. Opinions or inputs on Altec 1570B amplifiers
  92. Chinese EL34 amp to modify
  93. GE 97F cap polarity ???
  94. 6C8G phase inverter
  95. Shall I disassemble this ampex for parts?
  96. Power Amp Build from Eico ST70 - Negative Feedback Question
  97. ECC83 cathode grounded = awesome overdrive (?!?!?)
  98. Looking for a Balanced Mic Preamp w 12AX7
  99. Does anyone has a T.A.C.-34 or a T.A.C.-88 schematic?
  100. Conrad Johnson PV10L Phono stage DIY
  101. NEW KT66's
  102. Edcor outputs?
  103. Schematic Comment on 'Principles of Power" book ??
  104. what kind of resistor is this?
  105. stereo push pull amp one heater supply for power tubes
  106. Building new GU-50 stereo amp...
  107. Tubes and microphonics
  108. 829 or GU-29 audio amplifier schematics?
  109. Electrolytic types...
  110. Consonance t99 schematic/ minimax pre
  111. Useful Supplier of Transformers, Chokes, Chassis and other stuff
  112. Serious case of brain fry. You out there Thorsten?
  113. Upgrading a Beard P100 tubeamp
  114. Tube Amplifier with OT100
  115. bogen m120 schematic
  116. Question about Thorsten's Tube Phono Pre
  117. PP Output Trafo Measurement
  118. push pull balancing
  119. New issue Mullard Tubes
  120. Help on triode
  121. 5 Volt Damper Diodes?
  122. Please help diagnose preamp problem
  123. 6N1/6N3 substitution
  124. Cathode feedback and input impedance
  125. Optimal ripple voltage on b+ supply
  126. Setup suggestion between DAC-AH and ST-70
  127. Simple Low Voltage Tube Preamp?
  128. Anyone built this 100W GEC amp? How is the sound?
  129. Does anyone have VT150 schematic?
  130. Ignition Coil Toobe Amplifier
  131. Voltage swing of Heffa?
  132. All pentode PP amp?
  133. GZ34 anode load resistor calculation - help?
  134. Capacitor choice for attached schematic
  135. The sound of... tubes !
  136. All quiet on the SN front - recommended choice of tubes
  137. Moscode 600 hum/turn off thump
  138. Tube Tester Resto Basics
  139. What's the simple killer tube amp? Anyone?
  140. Help - CFB in a KT88 SE amp
  141. Any Russian speakers here?
  142. 6av6 Diode use?
  143. Power Supply
  144. Choke rating for choke input duty
  145. drawing a loadline for a power stage EL34 tube.
  146. Experiencing problems to insert tubes
  147. Preamp signal wiring ideas ?
  148. el34PP circuit evaluation!!
  149. "Re-Forming" Caps on Old Tube Amp
  150. Gary Pimm website?
  151. Haltron (UK), Trigon (UK) and Ultron (germany) ECC83 tubes info request.
  152. Audio Research D150 bias setting
  153. Cathodyne phase splitter with CCS?
  154. Has anyone tried 2 x 6550 100W amp?
  155. modelling PSU for Aikido
  156. 27 head phone amp or.??
  157. New Chassis Fabrication Pics and Capacitor Question
  158. Replacing old caps in the SP8 pre-amp
  159. Tube choice for Class A2
  160. hybrid graetz in PSUDII
  161. 6C45P Spud
  162. Philips ECG 12AX7WA or GE 5751 ?? Opinions, please.
  163. Single Ended EL34 Amp
  164. Rp / Rk on Aikido preamp
  165. hum in amp!
  166. Looking for a 83 rectifier model
  167. Advice wanted on ebay SET amps
  168. Resistors for ultralinear-to-triode conversion
  169. Gary Pimm
  170. resistor values for lifting ground AND LED
  171. output transformer impedance choices
  172. Feedback disc recording amp
  173. 6bm8/ECL82 vs EL84
  174. B+ filter caps
  175. (Newbie) CSS Question
  176. 6P15P Tubes: Push Pull Possible?
  177. Tube X-ref list ??
  178. AVO tube tester spares
  179. Add gain before or after the phase splitter?
  180. ping SY: Red Light LED question
  181. Greinacher voltage multiplier
  182. Dead channel
  183. Euphonia is back!
  184. What's the best 417A & 437A?
  185. Eico ST70 OPT / Schematic Question
  186. Is this feasible?
  187. Repairing 805 tubes
  188. jadis defy 7 help
  189. 6n1p Screen
  190. Mc275ce
  191. Are these tubes are the same?
  192. "King of tube(s) for line-stages"
  193. Acoustic Plan PhonoMaster
  194. Heathkit AA-81 schematic
  195. has anyone kept a copy of gpimm's latest self-biasing CCS?
  196. How to wire inductor - s and n
  197. Rogers Cadet III schematics Corrections
  198. Hickok TV-7/U restoration advice needed.
  199. Rogers Cadet III to SY's Red Light District or Gingertubes's Baby Huey
  200. 24v Aikido for newb.
  201. Powering Up Old Tube Amps/Receivers
  202. preliminary schematic drawing rev.1a
  203. Not a typical MKIII Dynaco.
  204. mosfet buffer for power stage
  205. EI KT-90 news
  206. 304TL based Class A
  207. Purchasing NOS Tubes
  208. tube power supply design resources
  209. High Voltage Regulator Design
  210. max. output for two 5881 tubes?
  211. driving your power stage
  212. Need schematic Cary Audio SLP-70 preamp
  213. Bridge-balanced amplifiers
  214. Tell-tale signs of good feedback usage?
  215. Any mid priced SE transformers around?
  216. Bias resistor
  217. Some sneek peeks
  218. Old radio with 4 pin sockets, info?
  219. need help on pot tapers
  220. A typical KT88 tubes
  221. amplifier for unknown output transformers?
  222. vista audio
  223. CV4014 and 5650 - any audio application of these tubes?
  224. SVP-PRO schematic
  225. Looking for a good source for attenuators
  226. Center-tap to ground?
  227. 6n1p-ev operating points
  228. where to find old pot's with switch built in
  229. Maggie refurb project
  230. Parafeed output
  231. Hirtel junior stereo italian tube amp
  232. power supply help
  233. 7189/7189A Problem
  234. Glow modulation tubes
  235. Transformer Hum leaks to Speakers
  236. EAR Yoshino V20 Amplifier
  237. Repair a tube tester?
  238. starting PP - 6p3s
  239. 6BL7 rA in PP
  240. Why such high plate voltage in 2A3 DRD?
  241. to parafeed or not to parafeed that is the question
  242. Lowering voltage output of transformer
  243. Using EL34 in a line stage
  244. peerless transfomer information
  245. Output transformer design for SS amp
  246. CD source fortube amp
  247. What's the SIMPLEST 50W or higher Amp Schematic but best sound you've heard ?
  248. BIG tube amplifier, two qbl5/3500 tubes
  249. EL34 or 6L6 mono help me please!!
  250. Why don't we use output tubes as cathode followers?

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