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  1. Mr'Liang audio amplifiers
  2. plate ccs
  3. DC Huuuummmmmm
  4. Hey Gingertube - trying to debug Baby Huey
  5. question about nOrh SE 9 amp for FE207E
  6. 6N1P or EF86 for bass guitar preamp?
  7. Arc D150
  8. help identify this "cleartop 6550"
  9. Cheap emergency gold sockets
  10. Is Western Electric for Real? KT88 Scam?
  11. Russian 635P?
  12. Swinging Choke or Smoothing Choke
  13. Amp de-bugging
  14. SMPS for B+ from PC PS
  15. Placement of tone stacks
  16. Rectify AC to DC for heating
  17. KT88 in class B
  18. 6FE5 Ultralinear?
  19. OPT -the good, the bad or the ugly ??
  20. Switching power supply for tube-pre
  21. Using a zener to drop plate+screen voltages
  22. Will this circuit work?
  23. Ei 6CW5, any users?
  24. Simple tube preamp?
  25. push-pull and primary impedance
  26. DIY : SWR Interstellar OverDrive (bass preamp)
  27. sound valves m-40 schematics
  28. series connection of filament in push pull output stage
  29. Has anybody built this amp?
  30. Red Light District Amp Screen Reg
  31. AEG rectifier
  32. Gm emulator for calibration
  33. Greetings and a couple of questions
  34. Tubes in a chip amp power stage??
  35. Yaqin MC-10L Preamp Tubes
  36. Sound of paralleld EL84
  37. Preamp Question
  38. WTH -- UL back to triode connection
  39. $139 tube amp but cant remember where i saw it...
  40. better 6au6 alternative
  41. type 40 triode curves
  42. Cap size for Hg Rectifiers
  43. Anybody have experience building an OTL amp?
  44. measuring hum
  45. Nytone SA2000
  46. Inter stage iron in High End
  47. very peculiar psu problem
  48. 12A6 Healthkit A7 Amp
  49. testing a 13E1
  50. JE Labs / Arnold Cruz 2A3 amp - Q
  51. 5842 grounded grid
  52. Russian RF Double Tetrodes
  53. Opinions or inputs on Altec 1570B amplifiers
  54. Chinese EL34 amp to modify
  55. GE 97F cap polarity ???
  56. 6C8G phase inverter
  57. Shall I disassemble this ampex for parts?
  58. Power Amp Build from Eico ST70 - Negative Feedback Question
  59. ECC83 cathode grounded = awesome overdrive (?!?!?)
  60. Looking for a Balanced Mic Preamp w 12AX7
  61. Does anyone has a T.A.C.-34 or a T.A.C.-88 schematic?
  62. Conrad Johnson PV10L Phono stage DIY
  63. NEW KT66's
  64. Edcor outputs?
  65. Schematic Comment on 'Principles of Power" book ??
  66. what kind of resistor is this?
  67. stereo push pull amp one heater supply for power tubes
  68. Building new GU-50 stereo amp...
  69. Tubes and microphonics
  70. 829 or GU-29 audio amplifier schematics?
  71. Electrolytic types...
  72. Consonance t99 schematic/ minimax pre
  73. Useful Supplier of Transformers, Chokes, Chassis and other stuff
  74. Serious case of brain fry. You out there Thorsten?
  75. Upgrading a Beard P100 tubeamp
  76. Tube Amplifier with OT100
  77. bogen m120 schematic
  78. Question about Thorsten's Tube Phono Pre
  79. PP Output Trafo Measurement
  80. push pull balancing
  81. New issue Mullard Tubes
  82. Help on triode
  83. 5 Volt Damper Diodes?
  84. Please help diagnose preamp problem
  85. 6N1/6N3 substitution
  86. Cathode feedback and input impedance
  87. Optimal ripple voltage on b+ supply
  88. Setup suggestion between DAC-AH and ST-70
  89. Simple Low Voltage Tube Preamp?
  90. Anyone built this 100W GEC amp? How is the sound?
  91. Does anyone have VT150 schematic?
  92. Ignition Coil Toobe Amplifier
  93. Voltage swing of Heffa?
  94. All pentode PP amp?
  95. GZ34 anode load resistor calculation - help?
  96. Capacitor choice for attached schematic
  97. The sound of... tubes !
  98. All quiet on the SN front - recommended choice of tubes
  99. Moscode 600 hum/turn off thump
  100. Tube Tester Resto Basics
  101. Marshall 100v 8100U Guitar Amp Hums
  102. What's the simple killer tube amp? Anyone?
  103. Help - CFB in a KT88 SE amp
  104. Any Russian speakers here?
  105. 6av6 Diode use?
  106. Power Supply
  107. Choke rating for choke input duty
  108. drawing a loadline for a power stage EL34 tube.
  109. Experiencing problems to insert tubes
  110. Preamp signal wiring ideas ?
  111. el34PP circuit evaluation!!
  112. "Re-Forming" Caps on Old Tube Amp
  113. Gary Pimm website?
  114. Haltron (UK), Trigon (UK) and Ultron (germany) ECC83 tubes info request.
  115. Audio Research D150 bias setting
  116. Cathodyne phase splitter with CCS?
  117. Has anyone tried 2 x 6550 100W amp?
  118. modelling PSU for Aikido
  119. 27 head phone amp or.??
  120. New Chassis Fabrication Pics and Capacitor Question
  121. Replacing old caps in the SP8 pre-amp
  122. Tube choice for Class A2
  123. hybrid graetz in PSUDII
  124. 6C45P Spud
  125. Philips ECG 12AX7WA or GE 5751 ?? Opinions, please.
  126. Single Ended EL34 Amp
  127. Rp / Rk on Aikido preamp
  128. hum in amp!
  129. Looking for a 83 rectifier model
  130. Advice wanted on ebay SET amps
  131. Resistors for ultralinear-to-triode conversion
  132. Gary Pimm
  133. resistor values for lifting ground AND LED
  134. output transformer impedance choices
  135. Feedback disc recording amp
  136. 6bm8/ECL82 vs EL84
  137. B+ filter caps
  138. (Newbie) CSS Question
  139. 6P15P Tubes: Push Pull Possible?
  140. Tube X-ref list ??
  141. AVO tube tester spares
  142. Add gain before or after the phase splitter?
  143. ping SY: Red Light LED question
  144. Greinacher voltage multiplier
  145. Dead channel
  146. Euphonia is back!
  147. What's the best 417A & 437A?
  148. Eico ST70 OPT / Schematic Question
  149. Is this feasible?
  150. Repairing 805 tubes
  151. jadis defy 7 help
  152. 6n1p Screen
  153. Mc275ce
  154. Are these tubes are the same?
  155. "King of tube(s) for line-stages"
  156. Acoustic Plan PhonoMaster
  157. Heathkit AA-81 schematic
  158. has anyone kept a copy of gpimm's latest self-biasing CCS?
  159. How to wire inductor - s and n
  160. Rogers Cadet III schematics Corrections
  161. Hickok TV-7/U restoration advice needed.
  162. Rogers Cadet III to SY's Red Light District or Gingertubes's Baby Huey
  163. 24v Aikido for newb.
  164. Powering Up Old Tube Amps/Receivers
  165. preliminary schematic drawing rev.1a
  166. Not a typical MKIII Dynaco.
  167. mosfet buffer for power stage
  168. 304TL based Class A
  169. EI KT-90 news
  170. Purchasing NOS Tubes
  171. tube power supply design resources
  172. High Voltage Regulator Design
  173. max. output for two 5881 tubes?
  174. Excessive current draw in Fender Deville
  175. driving your power stage
  176. Need schematic Cary Audio SLP-70 preamp
  177. Bridge-balanced amplifiers
  178. Tell-tale signs of good feedback usage?
  179. Any mid priced SE transformers around?
  180. Bias resistor
  181. Some sneek peeks
  182. Old radio with 4 pin sockets, info?
  183. need help on pot tapers
  184. A typical KT88 tubes
  185. amplifier for unknown output transformers?
  186. vista audio
  187. CV4014 and 5650 - any audio application of these tubes?
  188. SVP-PRO schematic
  189. Looking for a good source for attenuators
  190. Center-tap to ground?
  191. 6n1p-ev operating points
  192. where to find old pot's with switch built in
  193. Maggie refurb project
  194. Parafeed output
  195. Hirtel junior stereo italian tube amp
  196. power supply help
  197. 7189/7189A Problem
  198. Glow modulation tubes
  199. Transformer Hum leaks to Speakers
  200. EAR Yoshino V20 Amplifier
  201. Repair a tube tester?
  202. starting PP - 6p3s
  203. 6BL7 rA in PP
  204. Why such high plate voltage in 2A3 DRD?
  205. to parafeed or not to parafeed that is the question
  206. Lowering voltage output of transformer
  207. Using EL34 in a line stage
  208. peerless transfomer information
  209. Output transformer design for SS amp
  210. CD source fortube amp
  211. What's the SIMPLEST 50W or higher Amp Schematic but best sound you've heard ?
  212. BIG tube amplifier, two qbl5/3500 tubes
  213. EL34 or 6L6 mono help me please!!
  214. Why don't we use output tubes as cathode followers?
  215. 6C33 driver recommendations
  216. 100watt power, fixed gain far cleaner than Marshall amp any sugestion
  217. Minimum Zener Current with Pass Device
  218. Favorite easy 6V6 push-pull circuit?
  219. Tubecad soft-clipping circuit
  220. broskie voltage regulator
  221. E88CC dissipation in Aikido
  222. Magnavox 6BQ5/EL84 and Mr. Gabe
  223. Aikido hum has me stumped !!!!
  224. 5842 and 5842 WA for 300B
  225. Basic tube combination question.
  226. Resistive ps voltage follower
  227. First time DIY tube
  228. Need help with hum and faint left channel on my S5 Electronics kit
  229. grid impedence of paralleled tubes in push pull
  230. Fender Bassman PT Rewind
  231. rectification
  232. 6AU6 Varieties
  233. EMI tubes (British made)
  234. valve wear symptoms?
  235. Standby switch, snap, crackle, pop?
  236. Aikido PSU questions (Bas Boards)
  237. one tube amps
  238. Intermittant Clicking
  239. How to solve noise/storing/on car Tube Amp ? any Schematic ?
  240. Series MOSFET regulator better with just voltage ref on gate or with error amp?
  241. Tube spice models
  242. Audible Illusions Modulus faulty?
  243. Ei Tubes..
  244. more output transformer questions
  245. 6C33 design comments?
  246. Current production EL34
  247. Impedance matching
  248. question about multiple input transformer in same tube mic pre.
  249. One tube preamp
  250. Help 6G-E12A pinout??

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