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