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  1. Regulated heater reference
  2. Heater Elevation, how high?
  3. 6201 alternative
  4. 4V Tentlabs filament supply
  5. Difference between stereo & 2 monoblocks
  6. Parallel operation of triodes.
  7. input tubes using 6922?
  8. Looking for choices - affordable PP OPTs
  9. removing HF damping pF caps for guitar
  10. HH Scott Transformer #s
  11. Tips for rebuilding this amp?
  12. Need advice - what can I build with this power transformer?
  13. Source for high voltage electro caps
  14. differences between K-12M and K-12G kits?
  15. 12B4 Line Stage with Fixed Bias?
  16. split push-pull output stage
  17. any thoughts/explanation on the power supply for this circuit?
  18. Where to begin on a PP?
  19. ProAc Tablette 50 Speakers
  20. Recognizing wiped out ECC's 81,82,83
  21. So tell me.... how did YOU get into tubes??
  22. 7189 or 7819 el84 tube?
  23. Question about Star Grounding
  24. Employment offered; breadboarding a Tube Monoblock
  25. Need help: Looking for ECF80 preamp schematic
  26. a 5AR4 after a diode bridge? what is the purpose?
  27. 807 & Pe 06/40n
  28. Board layout design
  29. 12AX7, 12AU7 Substitution
  30. 200,000 Tubes for sale in Michigan
  31. Ground scheme
  32. Help on 6L6GC Triode PP..working points..
  33. A neat trick?
  34. Setup & Implementation of G Pimm's Self-Bias CCS
  35. Tube Preamp FM interference
  36. Parafeed 6EM7 with 2k load?
  37. Need Help on HEATHKIT W-5M Power Transformer
  38. Fully isolated oilbath transformer.
  39. small signal DHT or DHP like AVVT20/8?
  40. EL 84 Pentode Config.
  41. Amp Tubes
  42. Can I replace the 1M volume pot with a 100K one in my HK A300?
  43. what's a hum band?
  44. Tube phono pre-amp needed.
  45. U/L or triode mode on music angel amp
  46. Why do some people dislike ultralinear?
  47. Adaptive class A
  48. 6X4 Tube rectifier.
  49. AN Conquest Clone modification
  50. Beautiful tubes.
  51. Selectable EL34/6L6 Amp OT
  52. Simple circlotron amp
  53. 12AX7 how many is enough?
  54. samples of 300B in pse or pp
  55. power supply choke with a connection for AC ground?
  56. Heathkit A7E for guitar - preamp gain
  57. musical fidelity x10d schematic
  58. Pot Value
  59. Eico 666 (satan's choice) tube tester help.
  60. Finally built a subminiature guitar amp... now I need help!
  61. Minor crackling in new valves
  62. Matchless Lightning v Spitfire
  63. Aikido linestage Help Needed
  64. Scott 299A Schematic
  65. Q on PP & current mirrors
  66. Calculating PT headroom in PP class AB
  67. EL34 Failure
  68. Aikido Transformer recommendation
  69. No mains transformer B+ ?
  70. Help with horizontal mounting of 01-A and VR tubes
  71. twisted pair wiring on a tube amp
  72. Calculating SE Output Question
  73. Fixed-Bias Williamson EL34
  74. Bogen CHB-35 Preamp Mod
  75. resistors and sonic effects?
  76. tamura F-683 pole question
  77. EC52--Plate choke--300B/45/2a3/50/EL34 SE
  78. vtl deluxe 300 mb
  79. Is SD a Schottky Diode in this schematic?
  80. Maida regulator
  81. 572B vs 845 vs 211 SE
  82. Yet Another EL84 Amp
  83. Regulator for tube pre
  84. referencing heater supply ground to B+
  85. One Question for Hammond 1620 output transformer
  86. Bias adjustment on Dynaco ST70
  87. To SRPP or not?
  88. Ampeg SVT-VR or SVT-CL Schematics
  89. 811 vs 811A?
  90. Bogen integrated stereo amp
  91. Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!!
  92. Broken 6L6WXT tube
  93. transformer questions
  94. Microphone With A Low Impedance Tube
  95. 6EM7 Push-Pull
  96. polarity of Xicon electrolytics
  97. SE EL84 question
  98. Slightly Different guitar amp question
  99. ST-70 Power Transformer Info
  100. My new quad SED EL34 arrived
  101. isolation transformer for 50C5 amp
  102. DSP and vacuum tubes (from Analog Devices)
  103. Asymmetrical P-P OPT Primary
  104. Gated beam discriminator "amplifier"
  105. PCB Mount Loctal Socket?
  106. "Zero bias"/ driving the grid positive
  107. Low Profile Power Transformer Help
  108. Lowering Gain on an Aikido Preamp
  109. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  110. Tube vs. SS CCS...
  111. Another "I need an amp recommendation" thread
  112. i am a new one here
  113. i am new ! can you help me
  114. Pentode CCS: Would somebody check my work?
  115. PSU for 12V DC heaters
  116. 50C5 Triode strapped?
  117. homemade faceplates
  118. Can I build this?
  119. Heptode audio preamp? ECH83
  120. E130L in Triode mode
  121. class AB2 who's using it for hifi?
  122. Obscure radio tube
  123. another mingda
  124. tube hum in Aikido
  125. equivalent input impedance
  126. 6DG6GT "Magic Amp"
  127. Solen Fast Cap vs ASC film/oils in PS
  128. Tektronix transformers
  129. *very* basic plate resistance Q
  130. Yaqin MC-5881A amplifier improvements
  131. Tube design software
  132. More wasted space
  133. Radio tube guitar preamp
  134. PC Mount Novar Socket Suppliers
  135. Planning my first project
  136. Power Transformer leakage
  137. current sensing in series with anode resistors
  138. Please recommend a 9-pin dual triode = 417A
  139. Dynaco Pas 2
  140. Anyone have accurate charts for a KT90?
  141. Calling all Phono Preamp gurus, I'm looking for some plans
  142. Measuring Unknown Transformers
  143. Swinging choke vs std. choke in PS
  144. scope tests on a Heathkit A7E
  145. tube hum in a 6SN7 Aikido - is this weird?
  146. ECC807 preamp
  147. Ode to the 8416
  148. CCS 10M45 in Cathode of CF Driver
  149. Audionics help
  150. what 8-pin tubes would you suggest for an aikido preamp?
  151. KT88 tubes
  152. Any one tried these transformers?
  153. Williamson 6L6 Monoblocks (Finally)
  154. Master Volume preamp.. simple?
  155. ~2 watt SET decision
  156. retube order
  157. MC Riaa preamp help/opinions please
  158. WTB Fairchild 260 transformers
  159. Peter Millet amp
  160. 1946 Gibson BR-4 Amplifier tube question
  161. Power Regulator PCB's and Aikido parts
  162. A heater wiring DOH! moment??
  163. hum in fisher 800c phono section
  164. Aikido warm-up hum, resistor types, etc.
  165. Any of these tubes good for amps?
  166. Mini 98 El84 PP amplifier
  167. 1X6S33S=6X6S19P which one gives less impedance?
  168. schematic for 12.6 VDC heaters
  169. PP transformer for SE?? Help!
  170. 7-pin miniature tubes for audio?
  171. Tube Preamp as a Guitar Effect
  172. 6L6GT vs. EL34/6CA7 and WHY?
  173. Tube rectifier help
  174. Fender push pull amp... using one tube only.. is it dangerous?
  175. KT88 Lifetime estimation
  176. Adjustable distributed load discussion
  177. Thyratron voltage regulation
  178. switch-on, switch-off sequence for preamp/amp
  179. Found Meixing Amp schematic, sorta, would like some feedback
  180. Tube Voltage Regulator Flicker...
  181. Projects...How does one decide ?
  182. Best 6550's for the money....
  183. SMPS and tubes
  184. Looking for Eico 1030 manual/schematic
  185. 6AS7 OTL
  186. Gary Pimm's site down?
  187. 805 + 300b Amplifier Schematic
  188. Music Angel Amplifiers
  189. MM Phono stage (kit?) for tube newbie
  190. Russian tube dealer?
  191. STA1 + amp vs K-12M
  192. cheap ebay KT88 amp
  193. Tubes at low +B...
  194. Converting a yarland amp to drive headphones
  195. Starting a component system
  196. Really elementary question about caps.
  197. Tube newbie with Scott 299B
  198. 12AV7- 5965 Vs 12AY7
  199. PX25 tubes in a 300B Amp?
  200. help with a choke.
  201. 60Hz buzzing
  202. nuvistor bias with 18V ?
  203. ground bus for inputs on preamp - what's best?
  204. Voltage drop of various regulators in dc regulated power supply for preamp
  205. Does anyone recognise this tube amp?
  206. Entry level tube amp
  207. Anyone build/use 6BG6G?
  208. KT-77 Blues
  209. Dynaco Information MArk II Required
  210. tube test numbers - what do they mean?
  211. foolish notion, 12GN7 model?
  212. First-Timer Doubts: K-12 or Gainclone?
  213. Eico ST70 Rebuild / Upgrade
  214. More power in this
  215. Help modifiying schematic
  216. Simple Variable Tube Power Supply
  217. bias voltage vs bias current
  218. All the Bias options
  219. 6N6G looks like a great audio tube. . .
  220. Variable bias
  221. Tube amp on a budget
  222. tung sol
  223. How cool is tube deep cooling?
  224. Modified Fender Deluxe - Constant Current Phase Splitter
  225. 12B4 Equivalents?
  226. KT88 pp triode control grid resistor????
  227. Duncan Amps spice model docs...
  228. Hum in Legend amp
  229. Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
  230. Mullard high speed tester
  231. Joining two NCT transformers
  232. Stereo Driver PCB for PP Amp (EL34/KT88)?
  233. Tube Integrated Amp Kit Project
  234. 866A transient over-current capability?
  235. 6HS8 tubes for volume control
  236. cathode for plate ccs ?
  237. Broken Tube pin guides
  238. I need a 120v ct transformer... Where to look?
  239. Best production EL34?
  240. 6DJ8 or 12AT7
  241. 6L6 Single Ended Flea Amp?
  242. Se Tranny used on Parafeed!!!
  243. Hammond 270 series power transformer?
  244. 6aq5.......6v6.......
  245. 6N1 substitution with 6922
  246. driving 845 push-pull with a signal from a 300B SE stage
  247. Recommend a schematic for a Moving Coil head amp?
  248. Tube Buffer 6J1 / 5654 (6AK5)
  249. question about 6Av5ga tubes
  250. Toroidal SE transformers

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