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  1. Help - CFB in a KT88 SE amp
  2. Any Russian speakers here?
  3. 6av6 Diode use?
  4. Power Supply
  5. Choke rating for choke input duty
  6. drawing a loadline for a power stage EL34 tube.
  7. Experiencing problems to insert tubes
  8. Preamp signal wiring ideas ?
  9. el34PP circuit evaluation!!
  10. "Re-Forming" Caps on Old Tube Amp
  11. Gary Pimm website?
  12. Haltron (UK), Trigon (UK) and Ultron (germany) ECC83 tubes info request.
  13. Audio Research D150 bias setting
  14. Cathodyne phase splitter with CCS?
  15. Has anyone tried 2 x 6550 100W amp?
  16. modelling PSU for Aikido
  17. 27 head phone amp or.??
  18. New Chassis Fabrication Pics and Capacitor Question
  19. Replacing old caps in the SP8 pre-amp
  20. Tube choice for Class A2
  21. hybrid graetz in PSUDII
  22. 6C45P Spud
  23. Philips ECG 12AX7WA or GE 5751 ?? Opinions, please.
  24. Single Ended EL34 Amp
  25. Rp / Rk on Aikido preamp
  26. hum in amp!
  27. Looking for a 83 rectifier model
  28. Advice wanted on ebay SET amps
  29. Resistors for ultralinear-to-triode conversion
  30. Gary Pimm
  31. resistor values for lifting ground AND LED
  32. output transformer impedance choices
  33. Feedback disc recording amp
  34. 6bm8/ECL82 vs EL84
  35. B+ filter caps
  36. (Newbie) CSS Question
  37. 6P15P Tubes: Push Pull Possible?
  38. Tube X-ref list ??
  39. Add gain before or after the phase splitter?
  40. ping SY: Red Light LED question
  41. Greinacher voltage multiplier
  42. Dead channel
  43. Euphonia is back!
  44. What's the best 417A & 437A?
  45. Eico ST70 OPT / Schematic Question
  46. Is this feasible?
  47. Repairing 805 tubes
  48. jadis defy 7 help
  49. 6n1p Screen
  50. Mc275ce
  51. Are these tubes are the same?
  52. "King of tube(s) for line-stages"
  53. Acoustic Plan PhonoMaster
  54. Heathkit AA-81 schematic
  55. has anyone kept a copy of gpimm's latest self-biasing CCS?
  56. How to wire inductor - s and n
  57. Rogers Cadet III schematics Corrections
  58. Rogers Cadet III to SY's Red Light District or Gingertubes's Baby Huey
  59. 24v Aikido for newb.
  60. Powering Up Old Tube Amps/Receivers
  61. preliminary schematic drawing rev.1a
  62. Not a typical MKIII Dynaco.
  63. mosfet buffer for power stage
  64. EI KT-90 news
  65. 304TL based Class A
  66. Purchasing NOS Tubes
  67. tube power supply design resources
  68. High Voltage Regulator Design
  69. max. output for two 5881 tubes?
  70. driving your power stage
  71. Need schematic Cary Audio SLP-70 preamp
  72. Bridge-balanced amplifiers
  73. Tell-tale signs of good feedback usage?
  74. Any mid priced SE transformers around?
  75. Bias resistor
  76. Some sneek peeks
  77. Old radio with 4 pin sockets, info?
  78. need help on pot tapers
  79. A typical KT88 tubes
  80. amplifier for unknown output transformers?
  81. vista audio
  82. CV4014 and 5650 - any audio application of these tubes?
  83. SVP-PRO schematic
  84. Looking for a good source for attenuators
  85. Center-tap to ground?
  86. 6n1p-ev operating points
  87. where to find old pot's with switch built in
  88. Maggie refurb project
  89. Parafeed output
  90. Hirtel junior stereo italian tube amp
  91. power supply help
  92. 7189/7189A Problem
  93. Glow modulation tubes
  94. Transformer Hum leaks to Speakers
  95. EAR Yoshino V20 Amplifier
  96. starting PP - 6p3s
  97. 6BL7 rA in PP
  98. Why such high plate voltage in 2A3 DRD?
  99. to parafeed or not to parafeed that is the question
  100. Lowering voltage output of transformer
  101. Using EL34 in a line stage
  102. peerless transfomer information
  103. Output transformer design for SS amp
  104. CD source fortube amp
  105. What's the SIMPLEST 50W or higher Amp Schematic but best sound you've heard ?
  106. BIG tube amplifier, two qbl5/3500 tubes
  107. EL34 or 6L6 mono help me please!!
  108. Why don't we use output tubes as cathode followers?
  109. 6C33 driver recommendations
  110. Minimum Zener Current with Pass Device
  111. Favorite easy 6V6 push-pull circuit?
  112. Tubecad soft-clipping circuit
  113. broskie voltage regulator
  114. E88CC dissipation in Aikido
  115. Magnavox 6BQ5/EL84 and Mr. Gabe
  116. Aikido hum has me stumped !!!!
  117. 5842 and 5842 WA for 300B
  118. Basic tube combination question.
  119. Resistive ps voltage follower
  120. First time DIY tube
  121. Need help with hum and faint left channel on my S5 Electronics kit
  122. grid impedence of paralleled tubes in push pull
  123. rectification
  124. 6AU6 Varieties
  125. EMI tubes (British made)
  126. valve wear symptoms?
  127. Standby switch, snap, crackle, pop?
  128. Aikido PSU questions (Bas Boards)
  129. one tube amps
  130. Intermittant Clicking
  131. How to solve noise/storing/on car Tube Amp ? any Schematic ?
  132. Series MOSFET regulator better with just voltage ref on gate or with error amp?
  133. Tube spice models
  134. Audible Illusions Modulus faulty?
  135. Ei Tubes..
  136. more output transformer questions
  137. 6C33 design comments?
  138. Current production EL34
  139. Impedance matching
  140. question about multiple input transformer in same tube mic pre.
  141. One tube preamp
  142. Help 6G-E12A pinout??
  143. DIY Jadis JA 30 power amp PCB
  144. output tube options
  145. Developing a "universal" tube power supply PCB
  146. Looking for a Cover....
  147. EL34 Sound
  148. Pinout ECC83 to ECC808
  149. How to convert S5 K-12g kit to dual mono?
  150. EL84 + EF86
  151. Tube amps, power and speaker impedance
  152. How to figure output Z of SRPP?
  153. Rose RV23 preamp
  154. Wanted RIAA stage with 6SN7
  155. Help with PSU Design
  156. Tetrode output stage
  157. New amplifier project -my layout
  158. jadis ja 30
  159. Aikido Attenuator kit question
  160. Weird crackling sound without B+ applied
  161. More Aikido questions...........
  162. 6C41C in OTL?
  163. Looking for Voss-Ellis article
  164. 807 E-Linear
  165. ECC86 model
  166. Tube ID & Code Help Needed
  167. PS Decoupling question
  168. Need help in trouble-shooting my AES Sixpacs amp
  169. Space between power tubes
  170. Schematic please? SRPP with current source cathode follower
  171. Series connecting output Transformers.
  172. 6C45-Pi battery RIAA/Pre sugestions?
  173. Good News For EI Tube Fans
  174. My 300B project...
  175. building Single Ended amps
  176. Higher power amps using 807's or 1625's
  177. Project using Eico ST 70 Iron?
  178. M-1 amplifier kit - full documentation in public domain now
  179. Sus tubes ?
  180. Adjusting BIAS
  181. "Shrine" SE Amp using 6AH6 and 1625
  182. MFA Lumi - possible to "un-darken" the sound signature?
  183. Output transformers resistance
  184. Aikido heaters
  185. Return to Aikido Hum issues
  186. Looking for Schematic 6550 tube amp triode mode more than 35Watt ?
  187. Compare the sound of 6550 amp to a 6L6 amp
  188. Biasing a valve amp
  189. Scoundrel days
  190. Counterpoint SA100 one channel doesn´t work
  191. Hepl me circuit 6h30
  192. 6LR8 Amp Preliminary Questions
  193. Another 6L6 schematic
  194. 6S19P Amplifier
  195. An idea for a PL84 amp with toroidal interstage.
  196. 417A-300B Plate Choke or Interstage Coupled?
  197. Identifying an unknown tube
  198. Looking for EL34 PP Schematic Amp ? at least 35Watt
  199. Help diagnosing noise
  200. st70 blowout
  201. Gu81-m
  202. 6c4 pre-amp circuit
  203. 6SN7 6.3 V heater supply
  204. 2C26 &E1148's
  205. First ECL82 amp probs.
  206. JE Labs ST2A3DX
  207. Punchy 813 Poweramp
  208. Hum in AE K502 or K12m
  209. SE 6SN7 amp....
  210. Audio Innovations 800C schematic or even better service manual?
  211. Music angel amps
  212. Low gain 9-pin tubes for Aikido?
  213. JADIS ORCHESTRA IN PCB (original is hardwire)
  214. Blown Valve in ARC VT50 - help
  215. LAMM ML3 *Signature*
  216. Diode for DC heater
  217. Calculating shunt reg source impedance
  218. Marant 7c preamp diyzone project
  219. PSU Caps for an EL34 SET
  220. high gain 12ax7 preamp from scratch?
  221. IXYS 10M45 chip CCS
  222. Octal Aikido? What tubes?
  223. Tube power supply questions
  224. 6J5 input swing
  225. Checking spice model plate curve accuracy
  226. How many Ohm for triode strapping?
  227. Power supply for Heathkit WA-P2 pre-amplifier
  228. Bogen MX-60a tune-up
  229. dynaco st35 clone problem
  230. Edcor OPT's
  231. ECC40 cascode
  232. Air Vane RIAA Tuning Question
  233. Tube Noob! need help with tubes lots of tubes
  234. bias adjust installation, bogen mo-100a mo 100a quicksilver
  235. 6EM7 Amp
  236. 40mu tube preamp suggestions?
  237. Safe installation of interstage
  238. I've built some amps, need suggestions for a DIY preamp or line stage
  239. CRD diode CCS any good <1mA?
  240. Help fixing a Border Patrol Power Amp
  241. TAD-60 schematics / mods
  242. Selling tube amps
  243. Drd 300b Pse
  244. Hammond Transformer Winding Resistance -- 369GX
  245. The meaning of VA in a TX
  246. Ucl85
  247. Best way to measure cathode follower current
  248. OT: Season's greetings to all
  249. Anyone have experience with a 6AN4...?
  250. L-pad instead of H-pad??

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