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  1. 50C5 Triode strapped?
  2. homemade faceplates
  3. Can I build this?
  4. Heptode audio preamp? ECH83
  5. E130L in Triode mode
  6. class AB2 who's using it for hifi?
  7. Obscure radio tube
  8. another mingda
  9. tube hum in Aikido
  10. equivalent input impedance
  11. 6DG6GT "Magic Amp"
  12. Solen Fast Cap vs ASC film/oils in PS
  13. Tektronix transformers
  14. *very* basic plate resistance Q
  15. Yaqin MC-5881A amplifier improvements
  16. Tube design software
  17. More wasted space
  18. Radio tube guitar preamp
  19. PC Mount Novar Socket Suppliers
  20. Planning my first project
  21. Power Transformer leakage
  22. current sensing in series with anode resistors
  23. Please recommend a 9-pin dual triode = 417A
  24. Dynaco Pas 2
  25. Anyone have accurate charts for a KT90?
  26. Calling all Phono Preamp gurus, I'm looking for some plans
  27. Measuring Unknown Transformers
  28. Swinging choke vs std. choke in PS
  29. scope tests on a Heathkit A7E
  30. tube hum in a 6SN7 Aikido - is this weird?
  31. ECC807 preamp
  32. Ode to the 8416
  33. CCS 10M45 in Cathode of CF Driver
  34. Audionics help
  35. what 8-pin tubes would you suggest for an aikido preamp?
  36. KT88 tubes
  37. Any one tried these transformers?
  38. Williamson 6L6 Monoblocks (Finally)
  39. Master Volume preamp.. simple?
  40. ~2 watt SET decision
  41. retube order
  42. MC Riaa preamp help/opinions please
  43. WTB Fairchild 260 transformers
  44. Peter Millet amp
  45. 1946 Gibson BR-4 Amplifier tube question
  46. Power Regulator PCB's and Aikido parts
  47. A heater wiring DOH! moment??
  48. hum in fisher 800c phono section
  49. Aikido warm-up hum, resistor types, etc.
  50. Any of these tubes good for amps?
  51. Mini 98 El84 PP amplifier
  52. 1X6S33S=6X6S19P which one gives less impedance?
  53. schematic for 12.6 VDC heaters
  54. PP transformer for SE?? Help!
  55. 7-pin miniature tubes for audio?
  56. Tube Preamp as a Guitar Effect
  57. 6L6GT vs. EL34/6CA7 and WHY?
  58. Tube rectifier help
  59. Fender push pull amp... using one tube only.. is it dangerous?
  60. KT88 Lifetime estimation
  61. Adjustable distributed load discussion
  62. Thyratron voltage regulation
  63. switch-on, switch-off sequence for preamp/amp
  64. Found Meixing Amp schematic, sorta, would like some feedback
  65. Tube Voltage Regulator Flicker...
  66. Projects...How does one decide ?
  67. Best 6550's for the money....
  68. SMPS and tubes
  69. Looking for Eico 1030 manual/schematic
  70. 6AS7 OTL
  71. Gary Pimm's site down?
  72. 805 + 300b Amplifier Schematic
  73. Music Angel Amplifiers
  74. MM Phono stage (kit?) for tube newbie
  75. Russian tube dealer?
  76. STA1 + amp vs K-12M
  77. cheap ebay KT88 amp
  78. Tubes at low +B...
  79. Converting a yarland amp to drive headphones
  80. Starting a component system
  81. Really elementary question about caps.
  82. Tube newbie with Scott 299B
  83. 12AV7- 5965 Vs 12AY7
  84. PX25 tubes in a 300B Amp?
  85. help with a choke.
  86. 60Hz buzzing
  87. nuvistor bias with 18V ?
  88. ground bus for inputs on preamp - what's best?
  89. Voltage drop of various regulators in dc regulated power supply for preamp
  90. Does anyone recognise this tube amp?
  91. Entry level tube amp
  92. Anyone build/use 6BG6G?
  93. KT-77 Blues
  94. Dynaco Information MArk II Required
  95. tube test numbers - what do they mean?
  96. foolish notion, 12GN7 model?
  97. First-Timer Doubts: K-12 or Gainclone?
  98. Eico ST70 Rebuild / Upgrade
  99. More power in this
  100. Help modifiying schematic
  101. Simple Variable Tube Power Supply
  102. bias voltage vs bias current
  103. All the Bias options
  104. 6N6G looks like a great audio tube. . .
  105. Variable bias
  106. Tube amp on a budget
  107. tung sol
  108. How cool is tube deep cooling?
  109. Modified Fender Deluxe - Constant Current Phase Splitter
  110. 12B4 Equivalents?
  111. KT88 pp triode control grid resistor????
  112. Duncan Amps spice model docs...
  113. Hum in Legend amp
  114. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  115. Mullard high speed tester
  116. Joining two NCT transformers
  117. Stereo Driver PCB for PP Amp (EL34/KT88)?
  118. Tube Integrated Amp Kit Project
  119. 866A transient over-current capability?
  120. 6HS8 tubes for volume control
  121. cathode for plate ccs ?
  122. Broken Tube pin guides
  123. I need a 120v ct transformer... Where to look?
  124. Best production EL34?
  125. 6DJ8 or 12AT7
  126. 6L6 Single Ended Flea Amp?
  127. Se Tranny used on Parafeed!!!
  128. Hammond 270 series power transformer?
  129. 6aq5.......6v6.......
  130. 6N1 substitution with 6922
  131. driving 845 push-pull with a signal from a 300B SE stage
  132. Recommend a schematic for a Moving Coil head amp?
  133. Tube Buffer 6J1 / 5654 (6AK5)
  134. question about 6Av5ga tubes
  135. Toroidal SE transformers
  136. Calling MR. Tubelab! 6W6GT?
  137. Triode Trick
  138. SE 300B or PP KT88 amps?
  139. perhaps an INSANE query...
  140. Possible to estimate transformer specs?
  141. 9 pin replacement sockets
  142. Bench PSU
  143. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  144. Joke of the day
  145. $300 tube amp budget. Which Amp??
  146. Simple Linestage for 27 or 1H5?
  147. Foreplay III pre amp
  148. Fixing this 100TH
  149. I have some 5654
  150. Multisegment capacitor replacement help.
  151. Amplifer calculation
  152. Auto Bias?
  153. Se KT88 with Quad ESL
  154. Parts from Salvage
  155. power supply question.... too many Volts?
  156. Heathkit A7E Conversion to Guitar
  157. Now wouldn’t this make an awesome monoblock.
  158. Please,help me for schematics!!
  159. Kofi Annan in: "Open for Suggestion"
  160. What connector for 300vDC DOMESTIC environment?
  161. looking for help in transformers.
  162. problems with 805 tubes
  163. Audio Research D-90
  164. Replacing a 12AU7 in a cathode-follower.
  165. Original Dynaco 70 circuit mods/upgrades?
  166. is there a power supply unit for prototyping?
  167. Power Supply Design and Blocking
  168. OTL questions
  169. PP- which input/splitter topology??
  170. Cathode feedback and DHTs
  171. How should Dick Olsher Blue Velvet measure??
  172. Info on Melos MA-111?
  173. Aikido with dual personality
  174. Making a hole for AC socket in a chassis
  175. Liteaudio LS31 preamp pcb
  176. Thoughts on Quad II output topology
  177. HF-85 Rebuild advice
  178. Cheap Williamson amp kit
  179. Mr'Liang audio amplifiers
  180. plate ccs
  181. DC Huuuummmmmm
  182. Hey Gingertube - trying to debug Baby Huey
  183. question about nOrh SE 9 amp for FE207E
  184. 6N1P or EF86 for bass guitar preamp?
  185. Arc D150
  186. help identify this "cleartop 6550"
  187. Cheap emergency gold sockets
  188. Is Western Electric for Real? KT88 Scam?
  189. Russian 635P?
  190. Swinging Choke or Smoothing Choke
  191. Amp de-bugging
  192. SMPS for B+ from PC PS
  193. Placement of tone stacks
  194. Rectify AC to DC for heating
  195. KT88 in class B
  196. 6FE5 Ultralinear?
  197. OPT -the good, the bad or the ugly ??
  198. Switching power supply for tube-pre
  199. Using a zener to drop plate+screen voltages
  200. Will this circuit work?
  201. Ei 6CW5, any users?
  202. Simple tube preamp?
  203. push-pull and primary impedance
  204. DIY : SWR Interstellar OverDrive (bass preamp)
  205. sound valves m-40 schematics
  206. series connection of filament in push pull output stage
  207. Has anybody built this amp?
  208. Red Light District Amp Screen Reg
  209. AEG rectifier
  210. Gm emulator for calibration
  211. Greetings and a couple of questions
  212. Tubes in a chip amp power stage??
  213. Yaqin MC-10L Preamp Tubes
  214. Sound of paralleld EL84
  215. Preamp Question
  216. WTH -- UL back to triode connection
  217. $139 tube amp but cant remember where i saw it...
  218. better 6au6 alternative
  219. type 40 triode curves
  220. Cap size for Hg Rectifiers
  221. Anybody have experience building an OTL amp?
  222. measuring hum
  223. Nytone SA2000
  224. Inter stage iron in High End
  225. very peculiar psu problem
  226. 12A6 Healthkit A7 Amp
  227. testing a 13E1
  228. JE Labs / Arnold Cruz 2A3 amp - Q
  229. 5842 grounded grid
  230. Russian RF Double Tetrodes
  231. Opinions or inputs on Altec 1570B amplifiers
  232. Chinese EL34 amp to modify
  233. GE 97F cap polarity ???
  234. 6C8G phase inverter
  235. Shall I disassemble this ampex for parts?
  236. Power Amp Build from Eico ST70 - Negative Feedback Question
  237. ECC83 cathode grounded = awesome overdrive (?!?!?)
  238. Looking for a Balanced Mic Preamp w 12AX7
  239. Does anyone has a T.A.C.-34 or a T.A.C.-88 schematic?
  240. Conrad Johnson PV10L Phono stage DIY
  241. NEW KT66's
  242. Edcor outputs?
  243. Schematic Comment on 'Principles of Power" book ??
  244. what kind of resistor is this?
  245. stereo push pull amp one heater supply for power tubes
  246. Building new GU-50 stereo amp...
  247. Tubes and microphonics
  248. 829 or GU-29 audio amplifier schematics?
  249. Electrolytic types...
  250. Consonance t99 schematic/ minimax pre

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