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  1. input tubes using 6922?
  2. Looking for choices - affordable PP OPTs
  3. HH Scott Transformer #s
  4. Tips for rebuilding this amp?
  5. Need advice - what can I build with this power transformer?
  6. differences between K-12M and K-12G kits?
  7. 12B4 Line Stage with Fixed Bias?
  8. split push-pull output stage
  9. any thoughts/explanation on the power supply for this circuit?
  10. Where to begin on a PP?
  11. ProAc Tablette 50 Speakers
  12. Recognizing wiped out ECC's 81,82,83
  13. So tell me.... how did YOU get into tubes??
  14. 7189 or 7819 el84 tube?
  15. Question about Star Grounding
  16. Employment offered; breadboarding a Tube Monoblock
  17. Need help: Looking for ECF80 preamp schematic
  18. a 5AR4 after a diode bridge? what is the purpose?
  19. 807 & Pe 06/40n
  20. Board layout design
  21. 12AX7, 12AU7 Substitution
  22. 200,000 Tubes for sale in Michigan
  23. Ground scheme
  24. Help on 6L6GC Triode PP..working points..
  25. A neat trick?
  26. Setup & Implementation of G Pimm's Self-Bias CCS
  27. Tube Preamp FM interference
  28. Parafeed 6EM7 with 2k load?
  29. Need Help on HEATHKIT W-5M Power Transformer
  30. Fully isolated oilbath transformer.
  31. small signal DHT or DHP like AVVT20/8?
  32. EL 84 Pentode Config.
  33. Amp Tubes
  34. Can I replace the 1M volume pot with a 100K one in my HK A300?
  35. what's a hum band?
  36. Tube phono pre-amp needed.
  37. U/L or triode mode on music angel amp
  38. Why do some people dislike ultralinear?
  39. Adaptive class A
  40. 6X4 Tube rectifier.
  41. AN Conquest Clone modification
  42. Beautiful tubes.
  43. Selectable EL34/6L6 Amp OT
  44. Simple circlotron amp
  45. 12AX7 how many is enough?
  46. samples of 300B in pse or pp
  47. power supply choke with a connection for AC ground?
  48. musical fidelity x10d schematic
  49. Pot Value
  50. Eico 666 (satan's choice) tube tester help.
  51. Minor crackling in new valves
  52. Aikido linestage Help Needed
  53. Scott 299A Schematic
  54. Q on PP & current mirrors
  55. Calculating PT headroom in PP class AB
  56. EL34 Failure
  57. Aikido Transformer recommendation
  58. No mains transformer B+ ?
  59. Help with horizontal mounting of 01-A and VR tubes
  60. twisted pair wiring on a tube amp
  61. Calculating SE Output Question
  62. Fixed-Bias Williamson EL34
  63. Bogen CHB-35 Preamp Mod
  64. resistors and sonic effects?
  65. tamura F-683 pole question
  66. EC52--Plate choke--300B/45/2a3/50/EL34 SE
  67. vtl deluxe 300 mb
  68. Is SD a Schottky Diode in this schematic?
  69. Maida regulator
  70. 572B vs 845 vs 211 SE
  71. Yet Another EL84 Amp
  72. Regulator for tube pre
  73. referencing heater supply ground to B+
  74. One Question for Hammond 1620 output transformer
  75. Bias adjustment on Dynaco ST70
  76. To SRPP or not?
  77. 811 vs 811A?
  78. Bogen integrated stereo amp
  79. Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!!
  80. Broken 6L6WXT tube
  81. transformer questions
  82. Microphone With A Low Impedance Tube
  83. 6EM7 Push-Pull
  84. polarity of Xicon electrolytics
  85. SE EL84 question
  86. ST-70 Power Transformer Info
  87. My new quad SED EL34 arrived
  88. isolation transformer for 50C5 amp
  89. DSP and vacuum tubes (from Analog Devices)
  90. Asymmetrical P-P OPT Primary
  91. Gated beam discriminator "amplifier"
  92. PCB Mount Loctal Socket?
  93. "Zero bias"/ driving the grid positive
  94. Low Profile Power Transformer Help
  95. Lowering Gain on an Aikido Preamp
  96. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  97. Tube vs. SS CCS...
  98. Another "I need an amp recommendation" thread
  99. i am a new one here
  100. i am new ! can you help me
  101. Pentode CCS: Would somebody check my work?
  102. PSU for 12V DC heaters
  103. 50C5 Triode strapped?
  104. homemade faceplates
  105. Can I build this?
  106. Heptode audio preamp? ECH83
  107. E130L in Triode mode
  108. class AB2 who's using it for hifi?
  109. Obscure radio tube
  110. another mingda
  111. tube hum in Aikido
  112. equivalent input impedance
  113. 6DG6GT "Magic Amp"
  114. Solen Fast Cap vs ASC film/oils in PS
  115. Tektronix transformers
  116. *very* basic plate resistance Q
  117. Yaqin MC-5881A amplifier improvements
  118. Tube design software
  119. More wasted space
  120. PC Mount Novar Socket Suppliers
  121. Planning my first project
  122. Power Transformer leakage
  123. current sensing in series with anode resistors
  124. Please recommend a 9-pin dual triode = 417A
  125. Dynaco Pas 2
  126. Anyone have accurate charts for a KT90?
  127. Calling all Phono Preamp gurus, I'm looking for some plans
  128. Measuring Unknown Transformers
  129. Swinging choke vs std. choke in PS
  130. scope tests on a Heathkit A7E
  131. tube hum in a 6SN7 Aikido - is this weird?
  132. ECC807 preamp
  133. Ode to the 8416
  134. CCS 10M45 in Cathode of CF Driver
  135. Audionics help
  136. what 8-pin tubes would you suggest for an aikido preamp?
  137. KT88 tubes
  138. Any one tried these transformers?
  139. Williamson 6L6 Monoblocks (Finally)
  140. ~2 watt SET decision
  141. retube order
  142. MC Riaa preamp help/opinions please
  143. WTB Fairchild 260 transformers
  144. Peter Millet amp
  145. Power Regulator PCB's and Aikido parts
  146. A heater wiring DOH! moment??
  147. hum in fisher 800c phono section
  148. Aikido warm-up hum, resistor types, etc.
  149. Any of these tubes good for amps?
  150. Mini 98 El84 PP amplifier
  151. 1X6S33S=6X6S19P which one gives less impedance?
  152. schematic for 12.6 VDC heaters
  153. PP transformer for SE?? Help!
  154. 7-pin miniature tubes for audio?
  155. 6L6GT vs. EL34/6CA7 and WHY?
  156. Tube rectifier help
  157. KT88 Lifetime estimation
  158. Adjustable distributed load discussion
  159. Thyratron voltage regulation
  160. switch-on, switch-off sequence for preamp/amp
  161. Found Meixing Amp schematic, sorta, would like some feedback
  162. Tube Voltage Regulator Flicker...
  163. Projects...How does one decide ?
  164. Best 6550's for the money....
  165. SMPS and tubes
  166. Looking for Eico 1030 manual/schematic
  167. 6AS7 OTL
  168. Gary Pimm's site down?
  169. 805 + 300b Amplifier Schematic
  170. Music Angel Amplifiers
  171. MM Phono stage (kit?) for tube newbie
  172. Russian tube dealer?
  173. STA1 + amp vs K-12M
  174. cheap ebay KT88 amp
  175. Tubes at low +B...
  176. Converting a yarland amp to drive headphones
  177. Starting a component system
  178. Tube newbie with Scott 299B
  179. 12AV7- 5965 Vs 12AY7
  180. PX25 tubes in a 300B Amp?
  181. help with a choke.
  182. 60Hz buzzing
  183. nuvistor bias with 18V ?
  184. ground bus for inputs on preamp - what's best?
  185. Voltage drop of various regulators in dc regulated power supply for preamp
  186. Does anyone recognise this tube amp?
  187. Entry level tube amp
  188. Anyone build/use 6BG6G?
  189. KT-77 Blues
  190. Dynaco Information MArk II Required
  191. tube test numbers - what do they mean?
  192. foolish notion, 12GN7 model?
  193. First-Timer Doubts: K-12 or Gainclone?
  194. Eico ST70 Rebuild / Upgrade
  195. More power in this
  196. Help modifiying schematic
  197. Simple Variable Tube Power Supply
  198. bias voltage vs bias current
  199. All the Bias options
  200. 6N6G looks like a great audio tube. . .
  201. Variable bias
  202. Tube amp on a budget
  203. tung sol
  204. How cool is tube deep cooling?
  205. 12B4 Equivalents?
  206. KT88 pp triode control grid resistor????
  207. Duncan Amps spice model docs...
  208. Hum in Legend amp
  209. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  210. Mullard high speed tester
  211. Joining two NCT transformers
  212. Stereo Driver PCB for PP Amp (EL34/KT88)?
  213. Tube Integrated Amp Kit Project
  214. 866A transient over-current capability?
  215. 6HS8 tubes for volume control
  216. cathode for plate ccs ?
  217. Broken Tube pin guides
  218. I need a 120v ct transformer... Where to look?
  219. Best production EL34?
  220. 6DJ8 or 12AT7
  221. 6L6 Single Ended Flea Amp?
  222. Se Tranny used on Parafeed!!!
  223. Hammond 270 series power transformer?
  224. 6aq5.......6v6.......
  225. 6N1 substitution with 6922
  226. driving 845 push-pull with a signal from a 300B SE stage
  227. Recommend a schematic for a Moving Coil head amp?
  228. Tube Buffer 6J1 / 5654 (6AK5)
  229. question about 6Av5ga tubes
  230. Toroidal SE transformers
  231. Calling MR. Tubelab! 6W6GT?
  232. Triode Trick
  233. SE 300B or PP KT88 amps?
  234. perhaps an INSANE query...
  235. Possible to estimate transformer specs?
  236. 9 pin replacement sockets
  237. Bench PSU
  238. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  239. Joke of the day
  240. $300 tube amp budget. Which Amp??
  241. Simple Linestage for 27 or 1H5?
  242. Foreplay III pre amp
  243. Fixing this 100TH
  244. I have some 5654
  245. Amplifer calculation
  246. Auto Bias?
  247. Se KT88 with Quad ESL
  248. Parts from Salvage
  249. power supply question.... too many Volts?
  250. Now wouldn’t this make an awesome monoblock.

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