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

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