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  1. use a 45 to drive a 45 ?
  2. Regulated heater reference
  3. Heater Elevation, how high?
  4. 6201 alternative
  5. 4V Tentlabs filament supply
  6. Difference between stereo & 2 monoblocks
  7. Parallel operation of triodes.
  8. input tubes using 6922?
  9. Looking for choices - affordable PP OPTs
  10. HH Scott Transformer #s
  11. Tips for rebuilding this amp?
  12. Need advice - what can I build with this power transformer?
  13. differences between K-12M and K-12G kits?
  14. 12B4 Line Stage with Fixed Bias?
  15. split push-pull output stage
  16. any thoughts/explanation on the power supply for this circuit?
  17. Where to begin on a PP?
  18. ProAc Tablette 50 Speakers
  19. Recognizing wiped out ECC's 81,82,83
  20. So tell me.... how did YOU get into tubes??
  21. 7189 or 7819 el84 tube?
  22. Question about Star Grounding
  23. Employment offered; breadboarding a Tube Monoblock
  24. Need help: Looking for ECF80 preamp schematic
  25. a 5AR4 after a diode bridge? what is the purpose?
  26. 807 & Pe 06/40n
  27. Board layout design
  28. 12AX7, 12AU7 Substitution
  29. 200,000 Tubes for sale in Michigan
  30. Ground scheme
  31. Help on 6L6GC Triode PP..working points..
  32. A neat trick?
  33. Setup & Implementation of G Pimm's Self-Bias CCS
  34. Tube Preamp FM interference
  35. Parafeed 6EM7 with 2k load?
  36. Need Help on HEATHKIT W-5M Power Transformer
  37. Fully isolated oilbath transformer.
  38. small signal DHT or DHP like AVVT20/8?
  39. EL 84 Pentode Config.
  40. Amp Tubes
  41. Can I replace the 1M volume pot with a 100K one in my HK A300?
  42. what's a hum band?
  43. Tube phono pre-amp needed.
  44. U/L or triode mode on music angel amp
  45. Why do some people dislike ultralinear?
  46. Adaptive class A
  47. 6X4 Tube rectifier.
  48. AN Conquest Clone modification
  49. Beautiful tubes.
  50. Selectable EL34/6L6 Amp OT
  51. Simple circlotron amp
  52. 12AX7 how many is enough?
  53. samples of 300B in pse or pp
  54. power supply choke with a connection for AC ground?
  55. musical fidelity x10d schematic
  56. Pot Value
  57. Minor crackling in new valves
  58. Aikido linestage Help Needed
  59. Scott 299A Schematic
  60. Q on PP & current mirrors
  61. Calculating PT headroom in PP class AB
  62. EL34 Failure
  63. Aikido Transformer recommendation
  64. No mains transformer B+ ?
  65. Help with horizontal mounting of 01-A and VR tubes
  66. twisted pair wiring on a tube amp
  67. Calculating SE Output Question
  68. Fixed-Bias Williamson EL34
  69. Bogen CHB-35 Preamp Mod
  70. resistors and sonic effects?
  71. tamura F-683 pole question
  72. EC52--Plate choke--300B/45/2a3/50/EL34 SE
  73. vtl deluxe 300 mb
  74. Is SD a Schottky Diode in this schematic?
  75. Maida regulator
  76. 572B vs 845 vs 211 SE
  77. Yet Another EL84 Amp
  78. Regulator for tube pre
  79. referencing heater supply ground to B+
  80. One Question for Hammond 1620 output transformer
  81. Bias adjustment on Dynaco ST70
  82. To SRPP or not?
  83. 811 vs 811A?
  84. Bogen integrated stereo amp
  85. Audionote Japan (Kondo) Ongaku... Can I Clone to DIY!
  86. Broken 6L6WXT tube
  87. transformer questions
  88. Microphone With A Low Impedance Tube
  89. 6EM7 Push-Pull
  90. polarity of Xicon electrolytics
  91. SE EL84 question
  92. ST-70 Power Transformer Info
  93. My new quad SED EL34 arrived
  94. isolation transformer for 50C5 amp
  95. DSP and vacuum tubes (from Analog Devices)
  96. Asymmetrical P-P OPT Primary
  97. Gated beam discriminator "amplifier"
  98. PCB Mount Loctal Socket?
  99. "Zero bias"/ driving the grid positive
  100. Low Profile Power Transformer Help
  101. Lowering Gain on an Aikido Preamp
  102. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  103. Tube vs. SS CCS...
  104. Another "I need an amp recommendation" thread
  105. i am a new one here
  106. i am new ! can you help me
  107. Pentode CCS: Would somebody check my work?
  108. PSU for 12V DC heaters
  109. 50C5 Triode strapped?
  110. homemade faceplates
  111. Can I build this?
  112. Heptode audio preamp? ECH83
  113. E130L in Triode mode
  114. class AB2 who's using it for hifi?
  115. Obscure radio tube
  116. another mingda
  117. tube hum in Aikido
  118. equivalent input impedance
  119. 6DG6GT "Magic Amp"
  120. Tektronix transformers
  121. *very* basic plate resistance Q
  122. Yaqin MC-5881A amplifier improvements
  123. Tube design software
  124. More wasted space
  125. PC Mount Novar Socket Suppliers
  126. Planning my first project
  127. Power Transformer leakage
  128. current sensing in series with anode resistors
  129. Please recommend a 9-pin dual triode = 417A
  130. Dynaco Pas 2
  131. Anyone have accurate charts for a KT90?
  132. Calling all Phono Preamp gurus, I'm looking for some plans
  133. Measuring Unknown Transformers
  134. Swinging choke vs std. choke in PS
  135. scope tests on a Heathkit A7E
  136. tube hum in a 6SN7 Aikido - is this weird?
  137. ECC807 preamp
  138. Ode to the 8416
  139. CCS 10M45 in Cathode of CF Driver
  140. Audionics help
  141. what 8-pin tubes would you suggest for an aikido preamp?
  142. KT88 tubes
  143. Any one tried these transformers?
  144. Williamson 6L6 Monoblocks (Finally)
  145. ~2 watt SET decision
  146. retube order
  147. MC Riaa preamp help/opinions please
  148. WTB Fairchild 260 transformers
  149. Peter Millet amp
  150. Power Regulator PCB's and Aikido parts
  151. A heater wiring DOH! moment??
  152. hum in fisher 800c phono section
  153. Aikido warm-up hum, resistor types, etc.
  154. Any of these tubes good for amps?
  155. Mini 98 El84 PP amplifier
  156. 1X6S33S=6X6S19P which one gives less impedance?
  157. schematic for 12.6 VDC heaters
  158. PP transformer for SE?? Help!
  159. 7-pin miniature tubes for audio?
  160. 6L6GT vs. EL34/6CA7 and WHY?
  161. Tube rectifier help
  162. KT88 Lifetime estimation
  163. Adjustable distributed load discussion
  164. Thyratron voltage regulation
  165. switch-on, switch-off sequence for preamp/amp
  166. Found Meixing Amp schematic, sorta, would like some feedback
  167. Tube Voltage Regulator Flicker...
  168. Projects...How does one decide ?
  169. Best 6550's for the money....
  170. SMPS and tubes
  171. Looking for Eico 1030 manual/schematic
  172. 6AS7 OTL
  173. Gary Pimm's site down?
  174. 805 + 300b Amplifier Schematic
  175. Music Angel Amplifiers
  176. MM Phono stage (kit?) for tube newbie
  177. Russian tube dealer?
  178. STA1 + amp vs K-12M
  179. cheap ebay KT88 amp
  180. Tubes at low +B...
  181. Converting a yarland amp to drive headphones
  182. Starting a component system
  183. Tube newbie with Scott 299B
  184. 12AV7- 5965 Vs 12AY7
  185. PX25 tubes in a 300B Amp?
  186. help with a choke.
  187. 60Hz buzzing
  188. nuvistor bias with 18V ?
  189. ground bus for inputs on preamp - what's best?
  190. Voltage drop of various regulators in dc regulated power supply for preamp
  191. Does anyone recognise this tube amp?
  192. Entry level tube amp
  193. Anyone build/use 6BG6G?
  194. KT-77 Blues
  195. Dynaco Information MArk II Required
  196. tube test numbers - what do they mean?
  197. foolish notion, 12GN7 model?
  198. First-Timer Doubts: K-12 or Gainclone?
  199. Eico ST70 Rebuild / Upgrade
  200. More power in this
  201. Help modifiying schematic
  202. Simple Variable Tube Power Supply
  203. bias voltage vs bias current
  204. All the Bias options
  205. 6N6G looks like a great audio tube. . .
  206. Variable bias
  207. Tube amp on a budget
  208. tung sol
  209. How cool is tube deep cooling?
  210. 12B4 Equivalents?
  211. KT88 pp triode control grid resistor????
  212. Duncan Amps spice model docs...
  213. Hum in Legend amp
  214. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  215. Mullard high speed tester
  216. Joining two NCT transformers
  217. Stereo Driver PCB for PP Amp (EL34/KT88)?
  218. Tube Integrated Amp Kit Project
  219. 866A transient over-current capability?
  220. 6HS8 tubes for volume control
  221. cathode for plate ccs ?
  222. Broken Tube pin guides
  223. I need a 120v ct transformer... Where to look?
  224. Best production EL34?
  225. 6DJ8 or 12AT7
  226. 6L6 Single Ended Flea Amp?
  227. Se Tranny used on Parafeed!!!
  228. Hammond 270 series power transformer?
  229. 6aq5.......6v6.......
  230. 6N1 substitution with 6922
  231. driving 845 push-pull with a signal from a 300B SE stage
  232. Recommend a schematic for a Moving Coil head amp?
  233. Tube Buffer 6J1 / 5654 (6AK5)
  234. question about 6Av5ga tubes
  235. Toroidal SE transformers
  236. Triode Trick
  237. SE 300B or PP KT88 amps?
  238. perhaps an INSANE query...
  239. Possible to estimate transformer specs?
  240. 9 pin replacement sockets
  241. Bench PSU
  242. Need help to make a correct 83 (merc.vapor.rect) SS replacement.
  243. Joke of the day
  244. $300 tube amp budget. Which Amp??
  245. Simple Linestage for 27 or 1H5?
  246. Foreplay III pre amp
  247. Fixing this 100TH
  248. I have some 5654
  249. Amplifer calculation
  250. Auto Bias?

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