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  1. Setup suggestion between DAC-AH and ST-70
  2. Simple Low Voltage Tube Preamp?
  3. Anyone built this 100W GEC amp? How is the sound?
  4. Does anyone have VT150 schematic?
  5. Ignition Coil Toobe Amplifier
  6. Voltage swing of Heffa?
  7. All pentode PP amp?
  8. GZ34 anode load resistor calculation - help?
  9. Capacitor choice for attached schematic
  10. The sound of... tubes !
  11. All quiet on the SN front - recommended choice of tubes
  12. Moscode 600 hum/turn off thump
  13. What's the simple killer tube amp? Anyone?
  14. Help - CFB in a KT88 SE amp
  15. Any Russian speakers here?
  16. 6av6 Diode use?
  17. Power Supply
  18. Choke rating for choke input duty
  19. drawing a loadline for a power stage EL34 tube.
  20. Experiencing problems to insert tubes
  21. Preamp signal wiring ideas ?
  22. el34PP circuit evaluation!!
  23. "Re-Forming" Caps on Old Tube Amp
  24. Gary Pimm website?
  25. Haltron (UK), Trigon (UK) and Ultron (germany) ECC83 tubes info request.
  26. Audio Research D150 bias setting
  27. Cathodyne phase splitter with CCS?
  28. Has anyone tried 2 x 6550 100W amp?
  29. modelling PSU for Aikido
  30. 27 head phone amp or.??
  31. New Chassis Fabrication Pics and Capacitor Question
  32. Replacing old caps in the SP8 pre-amp
  33. Tube choice for Class A2
  34. hybrid graetz in PSUDII
  35. 6C45P Spud
  36. Philips ECG 12AX7WA or GE 5751 ?? Opinions, please.
  37. Single Ended EL34 Amp
  38. Rp / Rk on Aikido preamp
  39. hum in amp!
  40. Looking for a 83 rectifier model
  41. Advice wanted on ebay SET amps
  42. Resistors for ultralinear-to-triode conversion
  43. Gary Pimm
  44. resistor values for lifting ground AND LED
  45. output transformer impedance choices
  46. Feedback disc recording amp
  47. 6bm8/ECL82 vs EL84
  48. B+ filter caps
  49. (Newbie) CSS Question
  50. 6P15P Tubes: Push Pull Possible?
  51. Tube X-ref list ??
  52. Add gain before or after the phase splitter?
  53. ping SY: Red Light LED question
  54. Greinacher voltage multiplier
  55. Dead channel
  56. Euphonia is back!
  57. What's the best 417A & 437A?
  58. Eico ST70 OPT / Schematic Question
  59. Is this feasible?
  60. Repairing 805 tubes
  61. jadis defy 7 help
  62. 6n1p Screen
  63. Mc275ce
  64. Are these tubes are the same?
  65. "King of tube(s) for line-stages"
  66. Acoustic Plan PhonoMaster
  67. Heathkit AA-81 schematic
  68. has anyone kept a copy of gpimm's latest self-biasing CCS?
  69. How to wire inductor - s and n
  70. Rogers Cadet III schematics Corrections
  71. Rogers Cadet III to SY's Red Light District or Gingertubes's Baby Huey
  72. 24v Aikido for newb.
  73. Powering Up Old Tube Amps/Receivers
  74. preliminary schematic drawing rev.1a
  75. Not a typical MKIII Dynaco.
  76. mosfet buffer for power stage
  77. EI KT-90 news
  78. 304TL based Class A
  79. Purchasing NOS Tubes
  80. tube power supply design resources
  81. High Voltage Regulator Design
  82. max. output for two 5881 tubes?
  83. driving your power stage
  84. Need schematic Cary Audio SLP-70 preamp
  85. Bridge-balanced amplifiers
  86. Tell-tale signs of good feedback usage?
  87. Any mid priced SE transformers around?
  88. Bias resistor
  89. Some sneek peeks
  90. Old radio with 4 pin sockets, info?
  91. need help on pot tapers
  92. A typical KT88 tubes
  93. amplifier for unknown output transformers?
  94. vista audio
  95. CV4014 and 5650 - any audio application of these tubes?
  96. SVP-PRO schematic
  97. Looking for a good source for attenuators
  98. Center-tap to ground?
  99. 6n1p-ev operating points
  100. where to find old pot's with switch built in
  101. Maggie refurb project
  102. Parafeed output
  103. Hirtel junior stereo italian tube amp
  104. power supply help
  105. 7189/7189A Problem
  106. Glow modulation tubes
  107. Transformer Hum leaks to Speakers
  108. EAR Yoshino V20 Amplifier
  109. starting PP - 6p3s
  110. 6BL7 rA in PP
  111. Why such high plate voltage in 2A3 DRD?
  112. to parafeed or not to parafeed that is the question
  113. Lowering voltage output of transformer
  114. Using EL34 in a line stage
  115. peerless transfomer information
  116. Output transformer design for SS amp
  117. CD source fortube amp
  118. What's the SIMPLEST 50W or higher Amp Schematic but best sound you've heard ?
  119. BIG tube amplifier, two qbl5/3500 tubes
  120. EL34 or 6L6 mono help me please!!
  121. Why don't we use output tubes as cathode followers?
  122. 6C33 driver recommendations
  123. Minimum Zener Current with Pass Device
  124. Favorite easy 6V6 push-pull circuit?
  125. Tubecad soft-clipping circuit
  126. broskie voltage regulator
  127. E88CC dissipation in Aikido
  128. Magnavox 6BQ5/EL84 and Mr. Gabe
  129. Aikido hum has me stumped !!!!
  130. 5842 and 5842 WA for 300B
  131. Basic tube combination question.
  132. Resistive ps voltage follower
  133. First time DIY tube
  134. Need help with hum and faint left channel on my S5 Electronics kit
  135. grid impedence of paralleled tubes in push pull
  136. rectification
  137. 6AU6 Varieties
  138. EMI tubes (British made)
  139. valve wear symptoms?
  140. Standby switch, snap, crackle, pop?
  141. Aikido PSU questions (Bas Boards)
  142. one tube amps
  143. Intermittant Clicking
  144. How to solve noise/storing/on car Tube Amp ? any Schematic ?
  145. Series MOSFET regulator better with just voltage ref on gate or with error amp?
  146. Tube spice models
  147. Audible Illusions Modulus faulty?
  148. Ei Tubes..
  149. more output transformer questions
  150. 6C33 design comments?
  151. Current production EL34
  152. Impedance matching
  153. question about multiple input transformer in same tube mic pre.
  154. One tube preamp
  155. Help 6G-E12A pinout??
  156. DIY Jadis JA 30 power amp PCB
  157. output tube options
  158. Developing a "universal" tube power supply PCB
  159. Looking for a Cover....
  160. EL34 Sound
  161. Pinout ECC83 to ECC808
  162. How to convert S5 K-12g kit to dual mono?
  163. EL84 + EF86
  164. Tube amps, power and speaker impedance
  165. How to figure output Z of SRPP?
  166. Rose RV23 preamp
  167. Wanted RIAA stage with 6SN7
  168. Help with PSU Design
  169. Tetrode output stage
  170. New amplifier project -my layout
  171. jadis ja 30
  172. Aikido Attenuator kit question
  173. Weird crackling sound without B+ applied
  174. More Aikido questions...........
  175. 6C41C in OTL?
  176. Looking for Voss-Ellis article
  177. 807 E-Linear
  178. ECC86 model
  179. Tube ID & Code Help Needed
  180. PS Decoupling question
  181. Need help in trouble-shooting my AES Sixpacs amp
  182. Space between power tubes
  183. Schematic please? SRPP with current source cathode follower
  184. Series connecting output Transformers.
  185. 6C45-Pi battery RIAA/Pre sugestions?
  186. Good News For EI Tube Fans
  187. My 300B project...
  188. building Single Ended amps
  189. Higher power amps using 807's or 1625's
  190. Project using Eico ST 70 Iron?
  191. M-1 amplifier kit - full documentation in public domain now
  192. Sus tubes ?
  193. Adjusting BIAS
  194. "Shrine" SE Amp using 6AH6 and 1625
  195. MFA Lumi - possible to "un-darken" the sound signature?
  196. Output transformers resistance
  197. Aikido heaters
  198. Return to Aikido Hum issues
  199. Looking for Schematic 6550 tube amp triode mode more than 35Watt ?
  200. Compare the sound of 6550 amp to a 6L6 amp
  201. Biasing a valve amp
  202. Scoundrel days
  203. Counterpoint SA100 one channel doesn´t work
  204. Hepl me circuit 6h30
  205. 6LR8 Amp Preliminary Questions
  206. Another 6L6 schematic
  207. 6S19P Amplifier
  208. An idea for a PL84 amp with toroidal interstage.
  209. 417A-300B Plate Choke or Interstage Coupled?
  210. Identifying an unknown tube
  211. Looking for EL34 PP Schematic Amp ? at least 35Watt
  212. Help diagnosing noise
  213. st70 blowout
  214. Gu81-m
  215. 6c4 pre-amp circuit
  216. 6SN7 6.3 V heater supply
  217. 2C26 &E1148's
  218. First ECL82 amp probs.
  219. JE Labs ST2A3DX
  220. Punchy 813 Poweramp
  221. Hum in AE K502 or K12m
  222. SE 6SN7 amp....
  223. Audio Innovations 800C schematic or even better service manual?
  224. Music angel amps
  225. Low gain 9-pin tubes for Aikido?
  226. JADIS ORCHESTRA IN PCB (original is hardwire)
  227. Blown Valve in ARC VT50 - help
  228. LAMM ML3 *Signature*
  229. Diode for DC heater
  230. Calculating shunt reg source impedance
  231. Marant 7c preamp diyzone project
  232. PSU Caps for an EL34 SET
  233. high gain 12ax7 preamp from scratch?
  234. IXYS 10M45 chip CCS
  235. Octal Aikido? What tubes?
  236. Tube power supply questions
  237. 6J5 input swing
  238. Checking spice model plate curve accuracy
  239. How many Ohm for triode strapping?
  240. Power supply for Heathkit WA-P2 pre-amplifier
  241. Bogen MX-60a tune-up
  242. dynaco st35 clone problem
  243. Edcor OPT's
  244. ECC40 cascode
  245. Air Vane RIAA Tuning Question
  246. Tube Noob! need help with tubes lots of tubes
  247. bias adjust installation, bogen mo-100a mo 100a quicksilver
  248. 6EM7 Amp
  249. 40mu tube preamp suggestions?
  250. Safe installation of interstage

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