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  1. Question about Star Grounding
  2. Employment offered; breadboarding a Tube Monoblock
  3. Need help: Looking for ECF80 preamp schematic
  4. a 5AR4 after a diode bridge? what is the purpose?
  5. 807 & Pe 06/40n
  6. Board layout design
  7. 12AX7, 12AU7 Substitution
  8. 200,000 Tubes for sale in Michigan
  9. Ground scheme
  10. Help on 6L6GC Triode PP..working points..
  11. A neat trick?
  12. Setup & Implementation of G Pimm's Self-Bias CCS
  13. Tube Preamp FM interference
  14. Parafeed 6EM7 with 2k load?
  15. Need Help on HEATHKIT W-5M Power Transformer
  16. Fully isolated oilbath transformer.
  17. small signal DHT or DHP like AVVT20/8?
  18. EL 84 Pentode Config.
  19. Amp Tubes
  20. Can I replace the 1M volume pot with a 100K one in my HK A300?
  21. what's a hum band?
  22. Tube phono pre-amp needed.
  23. U/L or triode mode on music angel amp
  24. Why do some people dislike ultralinear?
  25. Adaptive class A
  26. 6X4 Tube rectifier.
  27. AN Conquest Clone modification
  28. Beautiful tubes.
  29. Selectable EL34/6L6 Amp OT
  30. Simple circlotron amp
  31. 12AX7 how many is enough?
  32. samples of 300B in pse or pp
  33. power supply choke with a connection for AC ground?
  34. Heathkit A7E for guitar - preamp gain
  35. musical fidelity x10d schematic
  36. Pot Value
  37. Eico 666 (satan's choice) tube tester help.
  38. Finally built a subminiature guitar amp... now I need help!
  39. Minor crackling in new valves
  40. Matchless Lightning v Spitfire
  41. Aikido linestage Help Needed
  42. Scott 299A Schematic
  43. Q on PP & current mirrors
  44. Calculating PT headroom in PP class AB
  45. EL34 Failure
  46. Aikido Transformer recommendation
  47. No mains transformer B+ ?
  48. Help with horizontal mounting of 01-A and VR tubes
  49. twisted pair wiring on a tube amp
  50. Calculating SE Output Question
  51. Fixed-Bias Williamson EL34
  52. Bogen CHB-35 Preamp Mod
  53. resistors and sonic effects?
  54. tamura F-683 pole question
  55. EC52--Plate choke--300B/45/2a3/50/EL34 SE
  56. vtl deluxe 300 mb
  57. Is SD a Schottky Diode in this schematic?
  58. Maida regulator
  59. 572B vs 845 vs 211 SE
  60. Yet Another EL84 Amp
  61. Regulator for tube pre
  62. referencing heater supply ground to B+
  63. One Question for Hammond 1620 output transformer
  64. Bias adjustment on Dynaco ST70
  65. To SRPP or not?
  66. Ampeg SVT-VR or SVT-CL Schematics
  67. 811 vs 811A?
  68. Bogen integrated stereo amp
  69. Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!!
  70. Broken 6L6WXT tube
  71. transformer questions
  72. Microphone With A Low Impedance Tube
  73. 6EM7 Push-Pull
  74. polarity of Xicon electrolytics
  75. SE EL84 question
  76. Slightly Different guitar amp question
  77. ST-70 Power Transformer Info
  78. My new quad SED EL34 arrived
  79. isolation transformer for 50C5 amp
  80. DSP and vacuum tubes (from Analog Devices)
  81. Asymmetrical P-P OPT Primary
  82. Gated beam discriminator "amplifier"
  83. PCB Mount Loctal Socket?
  84. "Zero bias"/ driving the grid positive
  85. Low Profile Power Transformer Help
  86. Lowering Gain on an Aikido Preamp
  87. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  88. Tube vs. SS CCS...
  89. Another "I need an amp recommendation" thread
  90. i am a new one here
  91. i am new ! can you help me
  92. Pentode CCS: Would somebody check my work?
  93. PSU for 12V DC heaters
  94. 50C5 Triode strapped?
  95. homemade faceplates
  96. Can I build this?
  97. Heptode audio preamp? ECH83
  98. E130L in Triode mode
  99. class AB2 who's using it for hifi?
  100. Obscure radio tube
  101. another mingda
  102. tube hum in Aikido
  103. equivalent input impedance
  104. 6DG6GT "Magic Amp"
  105. Solen Fast Cap vs ASC film/oils in PS
  106. Tektronix transformers
  107. *very* basic plate resistance Q
  108. Yaqin MC-5881A amplifier improvements
  109. Tube design software
  110. More wasted space
  111. Radio tube guitar preamp
  112. PC Mount Novar Socket Suppliers
  113. Planning my first project
  114. Power Transformer leakage
  115. current sensing in series with anode resistors
  116. Please recommend a 9-pin dual triode = 417A
  117. Dynaco Pas 2
  118. Anyone have accurate charts for a KT90?
  119. Calling all Phono Preamp gurus, I'm looking for some plans
  120. Measuring Unknown Transformers
  121. Swinging choke vs std. choke in PS
  122. scope tests on a Heathkit A7E
  123. tube hum in a 6SN7 Aikido - is this weird?
  124. ECC807 preamp
  125. Ode to the 8416
  126. CCS 10M45 in Cathode of CF Driver
  127. Audionics help
  128. what 8-pin tubes would you suggest for an aikido preamp?
  129. KT88 tubes
  130. Any one tried these transformers?
  131. Williamson 6L6 Monoblocks (Finally)
  132. Master Volume preamp.. simple?
  133. ~2 watt SET decision
  134. retube order
  135. MC Riaa preamp help/opinions please
  136. WTB Fairchild 260 transformers
  137. Peter Millet amp
  138. 1946 Gibson BR-4 Amplifier tube question
  139. Power Regulator PCB's and Aikido parts
  140. A heater wiring DOH! moment??
  141. hum in fisher 800c phono section
  142. Aikido warm-up hum, resistor types, etc.
  143. Any of these tubes good for amps?
  144. Mini 98 El84 PP amplifier
  145. 1X6S33S=6X6S19P which one gives less impedance?
  146. schematic for 12.6 VDC heaters
  147. PP transformer for SE?? Help!
  148. 7-pin miniature tubes for audio?
  149. Tube Preamp as a Guitar Effect
  150. 6L6GT vs. EL34/6CA7 and WHY?
  151. Tube rectifier help
  152. Fender push pull amp... using one tube only.. is it dangerous?
  153. KT88 Lifetime estimation
  154. Adjustable distributed load discussion
  155. Thyratron voltage regulation
  156. switch-on, switch-off sequence for preamp/amp
  157. Found Meixing Amp schematic, sorta, would like some feedback
  158. Tube Voltage Regulator Flicker...
  159. Projects...How does one decide ?
  160. Best 6550's for the money....
  161. SMPS and tubes
  162. Looking for Eico 1030 manual/schematic
  163. 6AS7 OTL
  164. Gary Pimm's site down?
  165. 805 + 300b Amplifier Schematic
  166. Music Angel Amplifiers
  167. MM Phono stage (kit?) for tube newbie
  168. Russian tube dealer?
  169. STA1 + amp vs K-12M
  170. cheap ebay KT88 amp
  171. Tubes at low +B...
  172. Converting a yarland amp to drive headphones
  173. Starting a component system
  174. Really elementary question about caps.
  175. Tube newbie with Scott 299B
  176. 12AV7- 5965 Vs 12AY7
  177. PX25 tubes in a 300B Amp?
  178. help with a choke.
  179. 60Hz buzzing
  180. nuvistor bias with 18V ?
  181. ground bus for inputs on preamp - what's best?
  182. Voltage drop of various regulators in dc regulated power supply for preamp
  183. Does anyone recognise this tube amp?
  184. Entry level tube amp
  185. Anyone build/use 6BG6G?
  186. KT-77 Blues
  187. Dynaco Information MArk II Required
  188. tube test numbers - what do they mean?
  189. foolish notion, 12GN7 model?
  190. First-Timer Doubts: K-12 or Gainclone?
  191. Eico ST70 Rebuild / Upgrade
  192. More power in this
  193. Help modifiying schematic
  194. Simple Variable Tube Power Supply
  195. bias voltage vs bias current
  196. All the Bias options
  197. 6N6G looks like a great audio tube. . .
  198. Variable bias
  199. Tube amp on a budget
  200. tung sol
  201. How cool is tube deep cooling?
  202. Modified Fender Deluxe - Constant Current Phase Splitter
  203. 12B4 Equivalents?
  204. KT88 pp triode control grid resistor????
  205. Duncan Amps spice model docs...
  206. Hum in Legend amp
  207. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  208. Mullard high speed tester
  209. Joining two NCT transformers
  210. Stereo Driver PCB for PP Amp (EL34/KT88)?
  211. Tube Integrated Amp Kit Project
  212. 866A transient over-current capability?
  213. 6HS8 tubes for volume control
  214. cathode for plate ccs ?
  215. Broken Tube pin guides
  216. I need a 120v ct transformer... Where to look?
  217. Best production EL34?
  218. 6DJ8 or 12AT7
  219. 6L6 Single Ended Flea Amp?
  220. Se Tranny used on Parafeed!!!
  221. Hammond 270 series power transformer?
  222. 6aq5.......6v6.......
  223. 6N1 substitution with 6922
  224. driving 845 push-pull with a signal from a 300B SE stage
  225. Recommend a schematic for a Moving Coil head amp?
  226. Tube Buffer 6J1 / 5654 (6AK5)
  227. question about 6Av5ga tubes
  228. Toroidal SE transformers
  229. Calling MR. Tubelab! 6W6GT?
  230. Triode Trick
  231. SE 300B or PP KT88 amps?
  232. perhaps an INSANE query...
  233. Possible to estimate transformer specs?
  234. 9 pin replacement sockets
  235. Bench PSU
  236. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  237. Joke of the day
  238. $300 tube amp budget. Which Amp??
  239. Simple Linestage for 27 or 1H5?
  240. Foreplay III pre amp
  241. Fixing this 100TH
  242. I have some 5654
  243. Multisegment capacitor replacement help.
  244. Amplifer calculation
  245. Auto Bias?
  246. Se KT88 with Quad ESL
  247. Parts from Salvage
  248. power supply question.... too many Volts?
  249. Heathkit A7E Conversion to Guitar
  250. Now wouldn’t this make an awesome monoblock.

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