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  1. To SRPP or not?
  2. 811 vs 811A?
  3. Bogen integrated stereo amp
  4. Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!!
  5. Broken 6L6WXT tube
  6. transformer questions
  7. Microphone With A Low Impedance Tube
  8. 6EM7 Push-Pull
  9. polarity of Xicon electrolytics
  10. SE EL84 question
  11. ST-70 Power Transformer Info
  12. My new quad SED EL34 arrived
  13. isolation transformer for 50C5 amp
  14. DSP and vacuum tubes (from Analog Devices)
  15. Asymmetrical P-P OPT Primary
  16. Gated beam discriminator "amplifier"
  17. PCB Mount Loctal Socket?
  18. "Zero bias"/ driving the grid positive
  19. Low Profile Power Transformer Help
  20. Lowering Gain on an Aikido Preamp
  21. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  22. Tube vs. SS CCS...
  23. Another "I need an amp recommendation" thread
  24. i am a new one here
  25. i am new ! can you help me
  26. Pentode CCS: Would somebody check my work?
  27. PSU for 12V DC heaters
  28. 50C5 Triode strapped?
  29. homemade faceplates
  30. Can I build this?
  31. Heptode audio preamp? ECH83
  32. E130L in Triode mode
  33. class AB2 who's using it for hifi?
  34. Obscure radio tube
  35. another mingda
  36. tube hum in Aikido
  37. equivalent input impedance
  38. 6DG6GT "Magic Amp"
  39. Solen Fast Cap vs ASC film/oils in PS
  40. Tektronix transformers
  41. *very* basic plate resistance Q
  42. Yaqin MC-5881A amplifier improvements
  43. Tube design software
  44. More wasted space
  45. PC Mount Novar Socket Suppliers
  46. Planning my first project
  47. Power Transformer leakage
  48. current sensing in series with anode resistors
  49. Please recommend a 9-pin dual triode = 417A
  50. Dynaco Pas 2
  51. Anyone have accurate charts for a KT90?
  52. Calling all Phono Preamp gurus, I'm looking for some plans
  53. Measuring Unknown Transformers
  54. Swinging choke vs std. choke in PS
  55. scope tests on a Heathkit A7E
  56. tube hum in a 6SN7 Aikido - is this weird?
  57. ECC807 preamp
  58. Ode to the 8416
  59. CCS 10M45 in Cathode of CF Driver
  60. Audionics help
  61. what 8-pin tubes would you suggest for an aikido preamp?
  62. KT88 tubes
  63. Any one tried these transformers?
  64. Williamson 6L6 Monoblocks (Finally)
  65. Master Volume preamp.. simple?
  66. ~2 watt SET decision
  67. retube order
  68. MC Riaa preamp help/opinions please
  69. WTB Fairchild 260 transformers
  70. Peter Millet amp
  71. Power Regulator PCB's and Aikido parts
  72. A heater wiring DOH! moment??
  73. hum in fisher 800c phono section
  74. Aikido warm-up hum, resistor types, etc.
  75. Any of these tubes good for amps?
  76. Mini 98 El84 PP amplifier
  77. 1X6S33S=6X6S19P which one gives less impedance?
  78. schematic for 12.6 VDC heaters
  79. PP transformer for SE?? Help!
  80. 7-pin miniature tubes for audio?
  81. 6L6GT vs. EL34/6CA7 and WHY?
  82. Tube rectifier help
  83. KT88 Lifetime estimation
  84. Adjustable distributed load discussion
  85. Thyratron voltage regulation
  86. switch-on, switch-off sequence for preamp/amp
  87. Found Meixing Amp schematic, sorta, would like some feedback
  88. Tube Voltage Regulator Flicker...
  89. Projects...How does one decide ?
  90. Best 6550's for the money....
  91. SMPS and tubes
  92. Looking for Eico 1030 manual/schematic
  93. 6AS7 OTL
  94. Gary Pimm's site down?
  95. 805 + 300b Amplifier Schematic
  96. Music Angel Amplifiers
  97. MM Phono stage (kit?) for tube newbie
  98. Russian tube dealer?
  99. STA1 + amp vs K-12M
  100. cheap ebay KT88 amp
  101. Tubes at low +B...
  102. Converting a yarland amp to drive headphones
  103. Starting a component system
  104. Tube newbie with Scott 299B
  105. 12AV7- 5965 Vs 12AY7
  106. PX25 tubes in a 300B Amp?
  107. help with a choke.
  108. 60Hz buzzing
  109. nuvistor bias with 18V ?
  110. ground bus for inputs on preamp - what's best?
  111. Voltage drop of various regulators in dc regulated power supply for preamp
  112. Does anyone recognise this tube amp?
  113. Entry level tube amp
  114. Anyone build/use 6BG6G?
  115. KT-77 Blues
  116. Dynaco Information MArk II Required
  117. tube test numbers - what do they mean?
  118. foolish notion, 12GN7 model?
  119. First-Timer Doubts: K-12 or Gainclone?
  120. Eico ST70 Rebuild / Upgrade
  121. More power in this
  122. Help modifiying schematic
  123. Simple Variable Tube Power Supply
  124. bias voltage vs bias current
  125. All the Bias options
  126. 6N6G looks like a great audio tube. . .
  127. Variable bias
  128. Tube amp on a budget
  129. tung sol
  130. How cool is tube deep cooling?
  131. 12B4 Equivalents?
  132. KT88 pp triode control grid resistor????
  133. Duncan Amps spice model docs...
  134. Hum in Legend amp
  135. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  136. Mullard high speed tester
  137. Joining two NCT transformers
  138. Stereo Driver PCB for PP Amp (EL34/KT88)?
  139. Tube Integrated Amp Kit Project
  140. 866A transient over-current capability?
  141. 6HS8 tubes for volume control
  142. cathode for plate ccs ?
  143. Broken Tube pin guides
  144. I need a 120v ct transformer... Where to look?
  145. Best production EL34?
  146. 6DJ8 or 12AT7
  147. 6L6 Single Ended Flea Amp?
  148. Se Tranny used on Parafeed!!!
  149. Hammond 270 series power transformer?
  150. 6aq5.......6v6.......
  151. 6N1 substitution with 6922
  152. driving 845 push-pull with a signal from a 300B SE stage
  153. Recommend a schematic for a Moving Coil head amp?
  154. Tube Buffer 6J1 / 5654 (6AK5)
  155. question about 6Av5ga tubes
  156. Toroidal SE transformers
  157. Calling MR. Tubelab! 6W6GT?
  158. Triode Trick
  159. SE 300B or PP KT88 amps?
  160. perhaps an INSANE query...
  161. Possible to estimate transformer specs?
  162. 9 pin replacement sockets
  163. Bench PSU
  164. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  165. Joke of the day
  166. $300 tube amp budget. Which Amp??
  167. Simple Linestage for 27 or 1H5?
  168. Foreplay III pre amp
  169. Fixing this 100TH
  170. I have some 5654
  171. Amplifer calculation
  172. Auto Bias?
  173. Se KT88 with Quad ESL
  174. Parts from Salvage
  175. power supply question.... too many Volts?
  176. Now wouldn’t this make an awesome monoblock.
  177. Please,help me for schematics!!
  178. Kofi Annan in: "Open for Suggestion"
  179. What connector for 300vDC DOMESTIC environment?
  180. looking for help in transformers.
  181. problems with 805 tubes
  182. Audio Research D-90
  183. Replacing a 12AU7 in a cathode-follower.
  184. Original Dynaco 70 circuit mods/upgrades?
  185. is there a power supply unit for prototyping?
  186. Power Supply Design and Blocking
  187. OTL questions
  188. PP- which input/splitter topology??
  189. Cathode feedback and DHTs
  190. How should Dick Olsher Blue Velvet measure??
  191. Info on Melos MA-111?
  192. Aikido with dual personality
  193. Making a hole for AC socket in a chassis
  194. Liteaudio LS31 preamp pcb
  195. Thoughts on Quad II output topology
  196. HF-85 Rebuild advice
  197. Cheap Williamson amp kit
  198. Mr. Liang audio amplifiers
  199. plate ccs
  200. DC Huuuummmmmm
  201. Hey Gingertube - trying to debug Baby Huey
  202. question about nOrh SE 9 amp for FE207E
  203. Arc D150
  204. help identify this "cleartop 6550"
  205. Cheap emergency gold sockets
  206. Is Western Electric for Real? KT88 Scam?
  207. Russian 635P?
  208. Swinging Choke or Smoothing Choke
  209. Amp de-bugging
  210. SMPS for B+ from PC PS
  211. Placement of tone stacks
  212. Rectify AC to DC for heating
  213. KT88 in class B
  214. 6FE5 Ultralinear?
  215. OPT -the good, the bad or the ugly ??
  216. Switching power supply for tube-pre
  217. Using a zener to drop plate+screen voltages
  218. Will this circuit work?
  219. Ei 6CW5, any users?
  220. Simple tube preamp?
  221. push-pull and primary impedance
  222. DIY : SWR Interstellar OverDrive (bass preamp)
  223. sound valves m-40 schematics
  224. series connection of filament in push pull output stage
  225. Has anybody built this amp?
  226. Red Light District Amp Screen Reg
  227. AEG rectifier
  228. Gm emulator for calibration
  229. Greetings and a couple of questions
  230. Tubes in a chip amp power stage??
  231. Yaqin MC-10L Preamp Tubes
  232. Sound of paralleld EL84
  233. Preamp Question
  234. WTH -- UL back to triode connection
  235. $139 tube amp but cant remember where i saw it...
  236. better 6au6 alternative
  237. type 40 triode curves
  238. Cap size for Hg Rectifiers
  239. Anybody have experience building an OTL amp?
  240. measuring hum
  241. Nytone SA2000
  242. Inter stage iron in High End
  243. very peculiar psu problem
  244. 12A6 Healthkit A7 Amp
  245. testing a 13E1
  246. JE Labs / Arnold Cruz 2A3 amp - Q
  247. 5842 grounded grid
  248. Russian RF Double Tetrodes
  249. Opinions or inputs on Altec 1570B amplifiers
  250. Chinese EL34 amp to modify

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