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  1. EL34 triode-connected grounding-grid curves?
  2. Pls help me understand AR SP6 circuit
  3. good begginer project (ax84 v.s. boozhound)
  4. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  5. Trouble in a new DIY amp.
  6. Suitable Transformers
  7. PT winding calculations HELP
  8. How to measure frequency response with a PC?
  9. Pspice Tube Generation Software
  10. Tektron tube amplifier Italy made
  11. What to do with 2x Stancor A3830?
  12. REQ: Schematics and tweaking tips
  13. Jadis Da 60 & 80
  14. 6L6 for a beginner, plus ECL86/6GW8
  15. Leak Stereo 20 clone? possibly with 6V6?
  16. Any comment on Vacuum State dpa300b??
  17. Radiotron Designers Handbook
  18. Kofi Annan in: "Buggin' the 'S' Outta Me!"
  19. 12B4 eqivalent : sonics-wise ?
  20. Any Eimac Scematics?
  21. What's a 6SL7 Good For?
  22. Where Can Buy 6c41
  23. would twisted pair from a network cable be suitable as hook-up wires inside an amp?
  24. use a 45 to drive a 45 ?
  25. Regulated heater reference
  26. Heater Elevation, how high?
  27. 6201 alternative
  28. 4V Tentlabs filament supply
  29. Difference between stereo & 2 monoblocks
  30. Parallel operation of triodes.
  31. input tubes using 6922?
  32. Looking for choices - affordable PP OPTs
  33. removing HF damping pF caps for guitar
  34. HH Scott Transformer #s
  35. Tips for rebuilding this amp?
  36. Need advice - what can I build with this power transformer?
  37. Source for high voltage electro caps
  38. differences between K-12M and K-12G kits?
  39. 12B4 Line Stage with Fixed Bias?
  40. split push-pull output stage
  41. any thoughts/explanation on the power supply for this circuit?
  42. Where to begin on a PP?
  43. ProAc Tablette 50 Speakers
  44. Recognizing wiped out ECC's 81,82,83
  45. So tell me.... how did YOU get into tubes??
  46. 7189 or 7819 el84 tube?
  47. Question about Star Grounding
  48. Employment offered; breadboarding a Tube Monoblock
  49. Need help: Looking for ECF80 preamp schematic
  50. a 5AR4 after a diode bridge? what is the purpose?
  51. 807 & Pe 06/40n
  52. Board layout design
  53. 12AX7, 12AU7 Substitution
  54. 200,000 Tubes for sale in Michigan
  55. Ground scheme
  56. Help on 6L6GC Triode PP..working points..
  57. A neat trick?
  58. Setup & Implementation of G Pimm's Self-Bias CCS
  59. Tube Preamp FM interference
  60. Parafeed 6EM7 with 2k load?
  61. Need Help on HEATHKIT W-5M Power Transformer
  62. Fully isolated oilbath transformer.
  63. small signal DHT or DHP like AVVT20/8?
  64. EL 84 Pentode Config.
  65. Amp Tubes
  66. Can I replace the 1M volume pot with a 100K one in my HK A300?
  67. what's a hum band?
  68. Tube phono pre-amp needed.
  69. U/L or triode mode on music angel amp
  70. Why do some people dislike ultralinear?
  71. Adaptive class A
  72. 6X4 Tube rectifier.
  73. AN Conquest Clone modification
  74. Beautiful tubes.
  75. Selectable EL34/6L6 Amp OT
  76. Simple circlotron amp
  77. 12AX7 how many is enough?
  78. samples of 300B in pse or pp
  79. power supply choke with a connection for AC ground?
  80. Heathkit A7E for guitar - preamp gain
  81. musical fidelity x10d schematic
  82. Pot Value
  83. Eico 666 (satan's choice) tube tester help.
  84. Finally built a subminiature guitar amp... now I need help!
  85. Minor crackling in new valves
  86. Matchless Lightning v Spitfire
  87. Aikido linestage Help Needed
  88. Scott 299A Schematic
  89. Q on PP & current mirrors
  90. Calculating PT headroom in PP class AB
  91. EL34 Failure
  92. Aikido Transformer recommendation
  93. No mains transformer B+ ?
  94. Help with horizontal mounting of 01-A and VR tubes
  95. twisted pair wiring on a tube amp
  96. Calculating SE Output Question
  97. Fixed-Bias Williamson EL34
  98. Bogen CHB-35 Preamp Mod
  99. resistors and sonic effects?
  100. tamura F-683 pole question
  101. EC52--Plate choke--300B/45/2a3/50/EL34 SE
  102. vtl deluxe 300 mb
  103. Is SD a Schottky Diode in this schematic?
  104. Maida regulator
  105. 572B vs 845 vs 211 SE
  106. Yet Another EL84 Amp
  107. Regulator for tube pre
  108. referencing heater supply ground to B+
  109. One Question for Hammond 1620 output transformer
  110. Bias adjustment on Dynaco ST70
  111. To SRPP or not?
  112. Ampeg SVT-VR or SVT-CL Schematics
  113. 811 vs 811A?
  114. Bogen integrated stereo amp
  115. Audionote japan ( Kondo) Ongaku..Can I ......... Clone to DIY!!!!!!!
  116. Broken 6L6WXT tube
  117. transformer questions
  118. Microphone With A Low Impedance Tube
  119. 6EM7 Push-Pull
  120. polarity of Xicon electrolytics
  121. SE EL84 question
  122. Slightly Different guitar amp question
  123. ST-70 Power Transformer Info
  124. My new quad SED EL34 arrived
  125. isolation transformer for 50C5 amp
  126. DSP and vacuum tubes (from Analog Devices)
  127. Asymmetrical P-P OPT Primary
  128. Gated beam discriminator "amplifier"
  129. PCB Mount Loctal Socket?
  130. "Zero bias"/ driving the grid positive
  131. Low Profile Power Transformer Help
  132. Lowering Gain on an Aikido Preamp
  133. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  134. Tube vs. SS CCS...
  135. Another "I need an amp recommendation" thread
  136. i am a new one here
  137. i am new ! can you help me
  138. Pentode CCS: Would somebody check my work?
  139. PSU for 12V DC heaters
  140. 50C5 Triode strapped?
  141. homemade faceplates
  142. Can I build this?
  143. Heptode audio preamp? ECH83
  144. E130L in Triode mode
  145. class AB2 who's using it for hifi?
  146. Obscure radio tube
  147. another mingda
  148. tube hum in Aikido
  149. equivalent input impedance
  150. 6DG6GT "Magic Amp"
  151. Solen Fast Cap vs ASC film/oils in PS
  152. Tektronix transformers
  153. *very* basic plate resistance Q
  154. Yaqin MC-5881A amplifier improvements
  155. Tube design software
  156. More wasted space
  157. Radio tube guitar preamp
  158. PC Mount Novar Socket Suppliers
  159. Planning my first project
  160. Power Transformer leakage
  161. current sensing in series with anode resistors
  162. Please recommend a 9-pin dual triode = 417A
  163. Dynaco Pas 2
  164. Anyone have accurate charts for a KT90?
  165. Calling all Phono Preamp gurus, I'm looking for some plans
  166. Measuring Unknown Transformers
  167. Swinging choke vs std. choke in PS
  168. scope tests on a Heathkit A7E
  169. tube hum in a 6SN7 Aikido - is this weird?
  170. ECC807 preamp
  171. Ode to the 8416
  172. CCS 10M45 in Cathode of CF Driver
  173. Audionics help
  174. what 8-pin tubes would you suggest for an aikido preamp?
  175. KT88 tubes
  176. Any one tried these transformers?
  177. Williamson 6L6 Monoblocks (Finally)
  178. Master Volume preamp.. simple?
  179. ~2 watt SET decision
  180. retube order
  181. MC Riaa preamp help/opinions please
  182. WTB Fairchild 260 transformers
  183. Peter Millet amp
  184. 1946 Gibson BR-4 Amplifier tube question
  185. Power Regulator PCB's and Aikido parts
  186. A heater wiring DOH! moment??
  187. hum in fisher 800c phono section
  188. Aikido warm-up hum, resistor types, etc.
  189. Any of these tubes good for amps?
  190. Mini 98 El84 PP amplifier
  191. 1X6S33S=6X6S19P which one gives less impedance?
  192. schematic for 12.6 VDC heaters
  193. PP transformer for SE?? Help!
  194. 7-pin miniature tubes for audio?
  195. Tube Preamp as a Guitar Effect
  196. 6L6GT vs. EL34/6CA7 and WHY?
  197. Tube rectifier help
  198. Fender push pull amp... using one tube only.. is it dangerous?
  199. KT88 Lifetime estimation
  200. Adjustable distributed load discussion
  201. Thyratron voltage regulation
  202. switch-on, switch-off sequence for preamp/amp
  203. Found Meixing Amp schematic, sorta, would like some feedback
  204. Tube Voltage Regulator Flicker...
  205. Projects...How does one decide ?
  206. Best 6550's for the money....
  207. SMPS and tubes
  208. Looking for Eico 1030 manual/schematic
  209. 6AS7 OTL
  210. Gary Pimm's site down?
  211. 805 + 300b Amplifier Schematic
  212. Music Angel Amplifiers
  213. MM Phono stage (kit?) for tube newbie
  214. Russian tube dealer?
  215. STA1 + amp vs K-12M
  216. cheap ebay KT88 amp
  217. Tubes at low +B...
  218. Converting a yarland amp to drive headphones
  219. Starting a component system
  220. Really elementary question about caps.
  221. Tube newbie with Scott 299B
  222. 12AV7- 5965 Vs 12AY7
  223. PX25 tubes in a 300B Amp?
  224. help with a choke.
  225. 60Hz buzzing
  226. nuvistor bias with 18V ?
  227. ground bus for inputs on preamp - what's best?
  228. Voltage drop of various regulators in dc regulated power supply for preamp
  229. Does anyone recognise this tube amp?
  230. Entry level tube amp
  231. Anyone build/use 6BG6G?
  232. KT-77 Blues
  233. Dynaco Information MArk II Required
  234. tube test numbers - what do they mean?
  235. foolish notion, 12GN7 model?
  236. First-Timer Doubts: K-12 or Gainclone?
  237. Eico ST70 Rebuild / Upgrade
  238. More power in this
  239. Help modifiying schematic
  240. Simple Variable Tube Power Supply
  241. bias voltage vs bias current
  242. All the Bias options
  243. 6N6G looks like a great audio tube. . .
  244. Variable bias
  245. Tube amp on a budget
  246. tung sol
  247. How cool is tube deep cooling?
  248. Modified Fender Deluxe - Constant Current Phase Splitter
  249. 12B4 Equivalents?
  250. KT88 pp triode control grid resistor????

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