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  1. Master Volume preamp.. simple?
  2. ~2 watt SET decision
  3. retube order
  4. MC Riaa preamp help/opinions please
  5. WTB Fairchild 260 transformers
  6. Peter Millet amp
  7. 1946 Gibson BR-4 Amplifier tube question
  8. Power Regulator PCB's and Aikido parts
  9. A heater wiring DOH! moment??
  10. hum in fisher 800c phono section
  11. Aikido warm-up hum, resistor types, etc.
  12. Any of these tubes good for amps?
  13. Mini 98 El84 PP amplifier
  14. 1X6S33S=6X6S19P which one gives less impedance?
  15. schematic for 12.6 VDC heaters
  16. PP transformer for SE?? Help!
  17. 7-pin miniature tubes for audio?
  18. Tube Preamp as a Guitar Effect
  19. 6L6GT vs. EL34/6CA7 and WHY?
  20. Tube rectifier help
  21. Fender push pull amp... using one tube only.. is it dangerous?
  22. KT88 Lifetime estimation
  23. Adjustable distributed load discussion
  24. Thyratron voltage regulation
  25. switch-on, switch-off sequence for preamp/amp
  26. Found Meixing Amp schematic, sorta, would like some feedback
  27. Tube Voltage Regulator Flicker...
  28. Projects...How does one decide ?
  29. Best 6550's for the money....
  30. SMPS and tubes
  31. Looking for Eico 1030 manual/schematic
  32. 6AS7 OTL
  33. Gary Pimm's site down?
  34. 805 + 300b Amplifier Schematic
  35. Music Angel Amplifiers
  36. MM Phono stage (kit?) for tube newbie
  37. Russian tube dealer?
  38. STA1 + amp vs K-12M
  39. cheap ebay KT88 amp
  40. Tubes at low +B...
  41. Converting a yarland amp to drive headphones
  42. Starting a component system
  43. Really elementary question about caps.
  44. Tube newbie with Scott 299B
  45. 12AV7- 5965 Vs 12AY7
  46. PX25 tubes in a 300B Amp?
  47. help with a choke.
  48. 60Hz buzzing
  49. nuvistor bias with 18V ?
  50. ground bus for inputs on preamp - what's best?
  51. Voltage drop of various regulators in dc regulated power supply for preamp
  52. Does anyone recognise this tube amp?
  53. Entry level tube amp
  54. Anyone build/use 6BG6G?
  55. KT-77 Blues
  56. Dynaco Information MArk II Required
  57. tube test numbers - what do they mean?
  58. foolish notion, 12GN7 model?
  59. First-Timer Doubts: K-12 or Gainclone?
  60. Eico ST70 Rebuild / Upgrade
  61. More power in this
  62. Help modifiying schematic
  63. Simple Variable Tube Power Supply
  64. bias voltage vs bias current
  65. All the Bias options
  66. 6N6G looks like a great audio tube. . .
  67. Variable bias
  68. Tube amp on a budget
  69. tung sol
  70. How cool is tube deep cooling?
  71. Modified Fender Deluxe - Constant Current Phase Splitter
  72. 12B4 Equivalents?
  73. KT88 pp triode control grid resistor????
  74. Duncan Amps spice model docs...
  75. Hum in Legend amp
  76. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  77. Mullard high speed tester
  78. Joining two NCT transformers
  79. Stereo Driver PCB for PP Amp (EL34/KT88)?
  80. Tube Integrated Amp Kit Project
  81. 866A transient over-current capability?
  82. 6HS8 tubes for volume control
  83. cathode for plate ccs ?
  84. Broken Tube pin guides
  85. I need a 120v ct transformer... Where to look?
  86. Best production EL34?
  87. 6DJ8 or 12AT7
  88. 6L6 Single Ended Flea Amp?
  89. Se Tranny used on Parafeed!!!
  90. Hammond 270 series power transformer?
  91. 6aq5.......6v6.......
  92. 6N1 substitution with 6922
  93. driving 845 push-pull with a signal from a 300B SE stage
  94. Recommend a schematic for a Moving Coil head amp?
  95. Tube Buffer 6J1 / 5654 (6AK5)
  96. question about 6Av5ga tubes
  97. Toroidal SE transformers
  98. Calling MR. Tubelab! 6W6GT?
  99. Triode Trick
  100. SE 300B or PP KT88 amps?
  101. perhaps an INSANE query...
  102. Possible to estimate transformer specs?
  103. 9 pin replacement sockets
  104. Bench PSU
  105. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  106. Joke of the day
  107. $300 tube amp budget. Which Amp??
  108. Simple Linestage for 27 or 1H5?
  109. Foreplay III pre amp
  110. Fixing this 100TH
  111. I have some 5654
  112. Multisegment capacitor replacement help.
  113. Amplifer calculation
  114. Auto Bias?
  115. Se KT88 with Quad ESL
  116. Parts from Salvage
  117. power supply question.... too many Volts?
  118. Heathkit A7E Conversion to Guitar
  119. Now wouldn’t this make an awesome monoblock.
  120. Please,help me for schematics!!
  121. Kofi Annan in: "Open for Suggestion"
  122. What connector for 300vDC DOMESTIC environment?
  123. looking for help in transformers.
  124. problems with 805 tubes
  125. Audio Research D-90
  126. Replacing a 12AU7 in a cathode-follower.
  127. Original Dynaco 70 circuit mods/upgrades?
  128. is there a power supply unit for prototyping?
  129. Power Supply Design and Blocking
  130. OTL questions
  131. PP- which input/splitter topology??
  132. Cathode feedback and DHTs
  133. How should Dick Olsher Blue Velvet measure??
  134. Info on Melos MA-111?
  135. Aikido with dual personality
  136. Making a hole for AC socket in a chassis
  137. Liteaudio LS31 preamp pcb
  138. Thoughts on Quad II output topology
  139. HF-85 Rebuild advice
  140. Cheap Williamson amp kit
  141. Mr'Liang audio amplifiers
  142. plate ccs
  143. DC Huuuummmmmm
  144. Hey Gingertube - trying to debug Baby Huey
  145. question about nOrh SE 9 amp for FE207E
  146. 6N1P or EF86 for bass guitar preamp?
  147. Arc D150
  148. help identify this "cleartop 6550"
  149. Cheap emergency gold sockets
  150. Is Western Electric for Real? KT88 Scam?
  151. Russian 635P?
  152. Swinging Choke or Smoothing Choke
  153. Amp de-bugging
  154. SMPS for B+ from PC PS
  155. Placement of tone stacks
  156. Rectify AC to DC for heating
  157. KT88 in class B
  158. 6FE5 Ultralinear?
  159. OPT -the good, the bad or the ugly ??
  160. Switching power supply for tube-pre
  161. Using a zener to drop plate+screen voltages
  162. Will this circuit work?
  163. Ei 6CW5, any users?
  164. Simple tube preamp?
  165. push-pull and primary impedance
  166. DIY : SWR Interstellar OverDrive (bass preamp)
  167. sound valves m-40 schematics
  168. series connection of filament in push pull output stage
  169. Has anybody built this amp?
  170. Red Light District Amp Screen Reg
  171. AEG rectifier
  172. Gm emulator for calibration
  173. Greetings and a couple of questions
  174. Tubes in a chip amp power stage??
  175. Yaqin MC-10L Preamp Tubes
  176. Sound of paralleld EL84
  177. Preamp Question
  178. WTH -- UL back to triode connection
  179. $139 tube amp but cant remember where i saw it...
  180. better 6au6 alternative
  181. type 40 triode curves
  182. Cap size for Hg Rectifiers
  183. Anybody have experience building an OTL amp?
  184. measuring hum
  185. Nytone SA2000
  186. Inter stage iron in High End
  187. very peculiar psu problem
  188. 12A6 Healthkit A7 Amp
  189. testing a 13E1
  190. JE Labs / Arnold Cruz 2A3 amp - Q
  191. 5842 grounded grid
  192. Russian RF Double Tetrodes
  193. Opinions or inputs on Altec 1570B amplifiers
  194. Chinese EL34 amp to modify
  195. GE 97F cap polarity ???
  196. 6C8G phase inverter
  197. Shall I disassemble this ampex for parts?
  198. Power Amp Build from Eico ST70 - Negative Feedback Question
  199. ECC83 cathode grounded = awesome overdrive (?!?!?)
  200. Looking for a Balanced Mic Preamp w 12AX7
  201. Does anyone has a T.A.C.-34 or a T.A.C.-88 schematic?
  202. Conrad Johnson PV10L Phono stage DIY
  203. NEW KT66's
  204. Edcor outputs?
  205. Schematic Comment on 'Principles of Power" book ??
  206. what kind of resistor is this?
  207. stereo push pull amp one heater supply for power tubes
  208. Building new GU-50 stereo amp...
  209. Tubes and microphonics
  210. 829 or GU-29 audio amplifier schematics?
  211. Electrolytic types...
  212. Consonance t99 schematic/ minimax pre
  213. Useful Supplier of Transformers, Chokes, Chassis and other stuff
  214. Serious case of brain fry. You out there Thorsten?
  215. Upgrading a Beard P100 tubeamp
  216. Tube Amplifier with OT100
  217. bogen m120 schematic
  218. Question about Thorsten's Tube Phono Pre
  219. PP Output Trafo Measurement
  220. push pull balancing
  221. New issue Mullard Tubes
  222. Help on triode
  223. 5 Volt Damper Diodes?
  224. Please help diagnose preamp problem
  225. 6N1/6N3 substitution
  226. Cathode feedback and input impedance
  227. Optimal ripple voltage on b+ supply
  228. Setup suggestion between DAC-AH and ST-70
  229. Simple Low Voltage Tube Preamp?
  230. Anyone built this 100W GEC amp? How is the sound?
  231. Does anyone have VT150 schematic?
  232. Ignition Coil Toobe Amplifier
  233. Voltage swing of Heffa?
  234. All pentode PP amp?
  235. GZ34 anode load resistor calculation - help?
  236. Capacitor choice for attached schematic
  237. The sound of... tubes !
  238. All quiet on the SN front - recommended choice of tubes
  239. Moscode 600 hum/turn off thump
  240. Tube Tester Resto Basics
  241. Marshall 100v 8100U Guitar Amp Hums
  242. What's the simple killer tube amp? Anyone?
  243. Help - CFB in a KT88 SE amp
  244. Any Russian speakers here?
  245. 6av6 Diode use?
  246. Power Supply
  247. Choke rating for choke input duty
  248. drawing a loadline for a power stage EL34 tube.
  249. Experiencing problems to insert tubes
  250. Preamp signal wiring ideas ?

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