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  1. One Question for Hammond 1620 output transformer
  2. Bias adjustment on Dynaco ST70
  3. To SRPP or not?
  4. Ampeg SVT-VR or SVT-CL Schematics
  5. 811 vs 811A?
  6. Bogen integrated stereo amp
  7. Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!!
  8. Broken 6L6WXT tube
  9. transformer questions
  10. Microphone With A Low Impedance Tube
  11. 6EM7 Push-Pull
  12. polarity of Xicon electrolytics
  13. SE EL84 question
  14. Slightly Different guitar amp question
  15. ST-70 Power Transformer Info
  16. My new quad SED EL34 arrived
  17. isolation transformer for 50C5 amp
  18. DSP and vacuum tubes (from Analog Devices)
  19. Asymmetrical P-P OPT Primary
  20. Gated beam discriminator "amplifier"
  21. PCB Mount Loctal Socket?
  22. "Zero bias"/ driving the grid positive
  23. Low Profile Power Transformer Help
  24. Lowering Gain on an Aikido Preamp
  25. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  26. Tube vs. SS CCS...
  27. Another "I need an amp recommendation" thread
  28. i am a new one here
  29. i am new ! can you help me
  30. Pentode CCS: Would somebody check my work?
  31. PSU for 12V DC heaters
  32. 50C5 Triode strapped?
  33. homemade faceplates
  34. Can I build this?
  35. Heptode audio preamp? ECH83
  36. E130L in Triode mode
  37. class AB2 who's using it for hifi?
  38. Obscure radio tube
  39. another mingda
  40. tube hum in Aikido
  41. equivalent input impedance
  42. 6DG6GT "Magic Amp"
  43. Solen Fast Cap vs ASC film/oils in PS
  44. Tektronix transformers
  45. *very* basic plate resistance Q
  46. Yaqin MC-5881A amplifier improvements
  47. Tube design software
  48. More wasted space
  49. Radio tube guitar preamp
  50. PC Mount Novar Socket Suppliers
  51. Planning my first project
  52. Power Transformer leakage
  53. current sensing in series with anode resistors
  54. Please recommend a 9-pin dual triode = 417A
  55. Dynaco Pas 2
  56. Anyone have accurate charts for a KT90?
  57. Calling all Phono Preamp gurus, I'm looking for some plans
  58. Measuring Unknown Transformers
  59. Swinging choke vs std. choke in PS
  60. scope tests on a Heathkit A7E
  61. tube hum in a 6SN7 Aikido - is this weird?
  62. ECC807 preamp
  63. Ode to the 8416
  64. CCS 10M45 in Cathode of CF Driver
  65. Audionics help
  66. what 8-pin tubes would you suggest for an aikido preamp?
  67. KT88 tubes
  68. Any one tried these transformers?
  69. Williamson 6L6 Monoblocks (Finally)
  70. Master Volume preamp.. simple?
  71. ~2 watt SET decision
  72. retube order
  73. MC Riaa preamp help/opinions please
  74. WTB Fairchild 260 transformers
  75. Peter Millet amp
  76. 1946 Gibson BR-4 Amplifier tube question
  77. Power Regulator PCB's and Aikido parts
  78. A heater wiring DOH! moment??
  79. hum in fisher 800c phono section
  80. Aikido warm-up hum, resistor types, etc.
  81. Any of these tubes good for amps?
  82. Mini 98 El84 PP amplifier
  83. 1X6S33S=6X6S19P which one gives less impedance?
  84. schematic for 12.6 VDC heaters
  85. PP transformer for SE?? Help!
  86. 7-pin miniature tubes for audio?
  87. Tube Preamp as a Guitar Effect
  88. 6L6GT vs. EL34/6CA7 and WHY?
  89. Tube rectifier help
  90. Fender push pull amp... using one tube only.. is it dangerous?
  91. KT88 Lifetime estimation
  92. Adjustable distributed load discussion
  93. Thyratron voltage regulation
  94. switch-on, switch-off sequence for preamp/amp
  95. Found Meixing Amp schematic, sorta, would like some feedback
  96. Tube Voltage Regulator Flicker...
  97. Projects...How does one decide ?
  98. Best 6550's for the money....
  99. SMPS and tubes
  100. Looking for Eico 1030 manual/schematic
  101. 6AS7 OTL
  102. Gary Pimm's site down?
  103. 805 + 300b Amplifier Schematic
  104. Music Angel Amplifiers
  105. MM Phono stage (kit?) for tube newbie
  106. Russian tube dealer?
  107. STA1 + amp vs K-12M
  108. cheap ebay KT88 amp
  109. Tubes at low +B...
  110. Converting a yarland amp to drive headphones
  111. Starting a component system
  112. Really elementary question about caps.
  113. Tube newbie with Scott 299B
  114. 12AV7- 5965 Vs 12AY7
  115. PX25 tubes in a 300B Amp?
  116. help with a choke.
  117. 60Hz buzzing
  118. nuvistor bias with 18V ?
  119. ground bus for inputs on preamp - what's best?
  120. Voltage drop of various regulators in dc regulated power supply for preamp
  121. Does anyone recognise this tube amp?
  122. Entry level tube amp
  123. Anyone build/use 6BG6G?
  124. KT-77 Blues
  125. Dynaco Information MArk II Required
  126. tube test numbers - what do they mean?
  127. foolish notion, 12GN7 model?
  128. First-Timer Doubts: K-12 or Gainclone?
  129. Eico ST70 Rebuild / Upgrade
  130. More power in this
  131. Help modifiying schematic
  132. Simple Variable Tube Power Supply
  133. bias voltage vs bias current
  134. All the Bias options
  135. 6N6G looks like a great audio tube. . .
  136. Variable bias
  137. Tube amp on a budget
  138. tung sol
  139. How cool is tube deep cooling?
  140. Modified Fender Deluxe - Constant Current Phase Splitter
  141. 12B4 Equivalents?
  142. KT88 pp triode control grid resistor????
  143. Duncan Amps spice model docs...
  144. Hum in Legend amp
  145. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  146. Mullard high speed tester
  147. Joining two NCT transformers
  148. Stereo Driver PCB for PP Amp (EL34/KT88)?
  149. Tube Integrated Amp Kit Project
  150. 866A transient over-current capability?
  151. 6HS8 tubes for volume control
  152. cathode for plate ccs ?
  153. Broken Tube pin guides
  154. I need a 120v ct transformer... Where to look?
  155. Best production EL34?
  156. 6DJ8 or 12AT7
  157. 6L6 Single Ended Flea Amp?
  158. Se Tranny used on Parafeed!!!
  159. Hammond 270 series power transformer?
  160. 6aq5.......6v6.......
  161. 6N1 substitution with 6922
  162. driving 845 push-pull with a signal from a 300B SE stage
  163. Recommend a schematic for a Moving Coil head amp?
  164. Tube Buffer 6J1 / 5654 (6AK5)
  165. question about 6Av5ga tubes
  166. Toroidal SE transformers
  167. Calling MR. Tubelab! 6W6GT?
  168. Triode Trick
  169. SE 300B or PP KT88 amps?
  170. perhaps an INSANE query...
  171. Possible to estimate transformer specs?
  172. 9 pin replacement sockets
  173. Bench PSU
  174. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  175. Joke of the day
  176. $300 tube amp budget. Which Amp??
  177. Simple Linestage for 27 or 1H5?
  178. Foreplay III pre amp
  179. Fixing this 100TH
  180. I have some 5654
  181. Multisegment capacitor replacement help.
  182. Amplifer calculation
  183. Auto Bias?
  184. Se KT88 with Quad ESL
  185. Parts from Salvage
  186. power supply question.... too many Volts?
  187. Heathkit A7E Conversion to Guitar
  188. Now wouldn’t this make an awesome monoblock.
  189. Please,help me for schematics!!
  190. Kofi Annan in: "Open for Suggestion"
  191. What connector for 300vDC DOMESTIC environment?
  192. looking for help in transformers.
  193. problems with 805 tubes
  194. Audio Research D-90
  195. Replacing a 12AU7 in a cathode-follower.
  196. Original Dynaco 70 circuit mods/upgrades?
  197. is there a power supply unit for prototyping?
  198. Power Supply Design and Blocking
  199. OTL questions
  200. PP- which input/splitter topology??
  201. Cathode feedback and DHTs
  202. How should Dick Olsher Blue Velvet measure??
  203. Info on Melos MA-111?
  204. Aikido with dual personality
  205. Making a hole for AC socket in a chassis
  206. Liteaudio LS31 preamp pcb
  207. Thoughts on Quad II output topology
  208. HF-85 Rebuild advice
  209. Cheap Williamson amp kit
  210. Mr'Liang audio amplifiers
  211. plate ccs
  212. DC Huuuummmmmm
  213. Hey Gingertube - trying to debug Baby Huey
  214. question about nOrh SE 9 amp for FE207E
  215. 6N1P or EF86 for bass guitar preamp?
  216. Arc D150
  217. help identify this "cleartop 6550"
  218. Cheap emergency gold sockets
  219. Is Western Electric for Real? KT88 Scam?
  220. Russian 635P?
  221. Swinging Choke or Smoothing Choke
  222. Amp de-bugging
  223. SMPS for B+ from PC PS
  224. Placement of tone stacks
  225. Rectify AC to DC for heating
  226. KT88 in class B
  227. 6FE5 Ultralinear?
  228. OPT -the good, the bad or the ugly ??
  229. Switching power supply for tube-pre
  230. Using a zener to drop plate+screen voltages
  231. Will this circuit work?
  232. Ei 6CW5, any users?
  233. Simple tube preamp?
  234. push-pull and primary impedance
  235. DIY : SWR Interstellar OverDrive (bass preamp)
  236. sound valves m-40 schematics
  237. series connection of filament in push pull output stage
  238. Has anybody built this amp?
  239. Red Light District Amp Screen Reg
  240. AEG rectifier
  241. Gm emulator for calibration
  242. Greetings and a couple of questions
  243. Tubes in a chip amp power stage??
  244. Yaqin MC-10L Preamp Tubes
  245. Sound of paralleld EL84
  246. Preamp Question
  247. WTH -- UL back to triode connection
  248. $139 tube amp but cant remember where i saw it...
  249. better 6au6 alternative
  250. type 40 triode curves

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