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  1. JoLida Envoy PreAmp or DIY?
  2. Looking for Audio Note P1SE schematics.
  3. Which SE-ECL82 amp to build?
  4. PSU Help
  5. Help for stabilisator Data
  6. How much ripple on B+ is allowed?
  7. Typical 2A3 hum?
  8. PV10 PS transformer
  9. 300B Filament Voltage Range
  10. Mullard EL34-Authenticity Verification
  11. Philips V30M amplifier
  12. PWM power supply???
  13. Regulated psu for tube preamp
  14. About to start a new project: PP 6CK4s...
  15. Komuro DC 300B crct w/ 50dht?
  16. DIY speaker attenuator?
  17. So what are some good 7-pin, hi mu, low noise/microphonic tubes??
  18. Audio meet pics from this past weekend
  19. Audio Note M7 Line Preamp??
  20. PP 7591 amp
  21. Tube op amps
  22. Please tell me how to upgrade Music Angel KT88 amplifier?
  23. Do I want a fan?
  24. 3rd Aikido?
  25. More Questions about A.Wrights PP1C
  26. 7591s flashing on start-up?
  27. first amp build... wiring questions
  28. pentode aikido driver for 300b
  29. Question about single NOS triodes in cascode for fun
  30. oscillating PP EL84 amplifier
  31. 6H30P based cathode-follower schema kindly requested
  32. Cathode follower question
  33. Bunch of old parts, worth anything?
  34. 6922 vs. 6N1P Bass Response
  35. Behringer reaches a new high in tube "transparency"
  36. Input stage tube
  37. Using transformers as choke?
  38. Resistors
  39. melos gk1 preamps anybody?
  40. Looking for a thread...
  41. DG7-32 based oscillograph schematic needed
  42. Try!!! Ef37a + 6c33c
  43. qustion on tube grade wiring
  44. Balanced pre-amp attempt
  45. GRRR.. sanity check on PTx current please
  46. How do you measure ripple on the B+?
  47. Aikido + EL34 Integrated
  48. heater voltage: why ac, and not dc?
  49. Ideas for using one ECL82 in a preamp
  50. Question about 12AU7
  51. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  52. WIMA FKP1 1000V as coupling cap ??
  53. Ping amperex re: Hammond organs
  54. schematic needen variable power supply
  55. Distributed Load/Balanced Bridge Connection
  56. CCS, feedback and grid leak questions.
  57. Vdd
  58. Help with 6GW8/ECL86 tubes??
  59. Best amplifier (recomendations) for Fostex FE108ez?
  60. Quick valve construction question
  61. Poindexter's 6v6 PP amp
  62. need some help with Ohm's law-fast!
  63. hybrid rectifier question
  64. I really, really wish I hadn't done that...
  65. Quicksilver 8417 conversion
  66. Supratek
  67. remote OPT, stupid idea ?
  68. Autoformer output stage
  69. Remote Power Supply: A Stupid Idea?
  70. Rjm simple tube phono pre
  71. Voltage controlled filter with tubes ??
  72. Does this look right to you?
  73. PWM amplifier hooked onto a tube preamp
  74. Zenith Console Opt Question, Odd Secondary
  75. Marchand LN108 Tube Phono Preamp
  76. Anyone care to express an opinion on this output Transformer
  77. 6L6 Triode strapped amp suggestions
  78. 6F1 and 6P2 Equivalents
  79. in memoriam Fred N. AKA 807
  80. Perplexed by 5AR4 Tube Socket? Picture Included
  81. Push pull 300B and more than a few questions...
  82. First tube project.
  83. DHT learning
  84. how do i add adjustable bias on amp?
  85. Tube tester: Accurate Instruments Model 157
  86. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  87. Design Questions
  88. SRPP + Gainclone
  89. dht p-p filament question
  90. Report - 2005 London HiFi Show
  91. Want to build hi - power amp
  92. Can I mod this circuit to use 6922 tubes?
  93. tube preamp kit question (again?)
  94. 3f4 spice models needed
  95. Back to Back transformers to get +B of 200V ??
  96. New amp project-some ideas of my own and looking for input from others...
  97. Emphasising the transients, but making the mediocre listenable
  98. Looking For a PP 6Y6GA Design
  99. Industrial vs Commercial amps and OPT's
  100. ECC99 operating points?
  101. Preamp suggestions for a tube newbie
  102. very odd thing happening in my amp... help
  103. 47 Penthode in triode mode.
  104. Capacitor value
  105. PSE bias how?
  106. GM70 Power supply
  107. interstage convert to phase splitter
  108. EL84 SE advice'n'schematics needed
  109. world's heaviest 2A3 amp?
  110. How To Tell What Tubes To Keep
  111. PX4 Trauma
  112. An amplifier project I'm looking for...
  113. Your 100volt plus moment
  114. Dynaco rectifier replacement?
  115. SET on a budget
  116. PSU Design Learning Links
  117. Expensive Commercial Amps
  118. Tube modified CD player with TDA1543
  119. Fluorescent lamp choke - use in tube amp?
  120. Tube Overdrive
  121. Mains Transformer for EL34PP
  122. Please review schematic
  123. Wire size for projects?
  124. super simple tube amp needed...
  125. Matlab-based triode modelling software
  126. 12AT7 Pre-amp schematic, where to find?
  127. Test settings for Hickok 539A for 183/483 tube?
  128. choke input ripple level?
  129. 120 Hz Buzz Unplugged
  130. 300B like 845
  131. DC filament ground and high voltage ground
  132. DIY Club remote volume help?
  133. Aesthetix Rhea and I/O diagrams?
  134. Cathode Bypass Cap questions
  135. rectification and xfmr stress
  136. Audio Research
  137. Anybody got Melos MA-111 Schematic?
  138. Problem locating power supply
  139. Timer Relay
  140. Help With Jukebox Amp
  141. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  142. 6W6 as a driver
  143. Choosing the best EL34 pp opt
  144. Your opinion, please
  145. Tube surround sound
  146. Could you guys check this cascode article for me
  147. what would happen if...
  148. A Heretical Unity Gain Line Stage part III
  149. Which ECC83 tube and caps question
  150. Paralle Push Pull Simulclass
  151. organ amp question
  152. Stereo build- Mikael Abdellah's KT88 SE amp
  153. Audio Research AC21 cross over
  154. First DIY amp pics-as promised!
  155. emission-lab info
  156. Simple EL84 PP design needed
  157. 6C33 Circlotron
  158. Valves glow fierce
  159. Kirung's GM70 SE-Amps from Korea
  160. Digital Pots
  161. Troubleshooting First Tube Project
  162. Millett Low mu Preamp help
  163. thoughts about a 'universal' preamp
  164. Morgan Jones's Bevois Valley amp...
  165. Aikido line stage results? share yours
  166. HELP with breadboard layout!!!
  167. balanced line stage schematic needed
  168. Its Alive!! First Diy Amp Works!!
  169. Duncan Munro Psud primer please?
  170. Preamp volume control??
  171. Welborne 300b DRD plate current
  172. Active compensation...
  173. Calculating expected output power.
  174. Hybrid X line amp
  175. any way to fix a end cap on a 807 power tube
  176. power tube question
  177. MJ head-amp- how does it sound?
  178. Quick Aikido question
  179. What kind of amp?
  180. Problem with cathode resistor
  181. 2A3 DRD schematic wanted
  182. reduce before amplifying?
  183. 6AS7-G RCA application considerations
  184. Matisse Fantasy waveform output test
  185. El84/6bq5/ecc83 + Ef86 = Dc Pp
  186. Searching for simple circuit
  187. McIntosh MC60 Screens
  188. Improve this Pilot 240 (EL84/6BQ5)
  189. Eimac 35TG
  190. power supply issues
  191. Which Amperex ECC88 is the best?
  192. Grid battery bias on phono....
  193. EL34 identification
  194. UL vs SE
  195. 6sn7 operating points
  196. HELP! B+ voltage problem/burning power resistor
  197. are these tubes any good ?????
  198. Free Lunch/Monkey/DRD inspired 2A3
  199. E280F Triode mode operating point
  200. 2nd Aikido PCB and PSU groupbuy
  201. Newbie question...
  202. Help in getting more gain out of 300B SE
  203. ECC808 what to do
  204. Microphonics When Hot, Raytheon CK5842
  205. MOSCODE hybrid DIY
  206. transformer question
  207. help, my amp humz
  208. Le tube preamp
  209. Ideal operating point of 6sj7
  210. Anyone tried the Hammond 1642SE in a BIG SE amp?
  211. MOSFET current source as triode load
  212. C-core transformers
  213. choke and choke
  214. suggestions for 300B tubes
  215. Differential input stage
  216. rca conversion
  217. heating
  218. Russian 6N8S/1578
  219. DIY tube amp squeals when turned up
  220. ECL80-Amp from Andreas Kirschner
  221. HSS preamp, anyone care to comment
  222. help me design an input stage for 6b4G PP
  223. Instrument/Microphone Tube Pre-amp
  224. first-time tube DIY project...phono preamp
  225. A question regarding schematics
  226. My first creation
  227. Your opinion on this VCCS heater supply please.
  228. Looking for ORIGINAL GE 6L6GC
  229. Need help - O/T trannies for future project
  230. ECL82 (6BM8) PP Stereo
  231. first DIY amp start up-yowza HELP!
  232. Ronette Info
  233. GE 5687 (5 stars)
  234. Help: Toroid choke for a preamp
  235. does meter degrade sound ?
  236. Eye Tube (1629) controller help
  237. Scott 99B & 99C Public Auction Find
  238. tube id book
  239. radio , tv station and radar stations still use the best single end class a amplifier
  240. Stupid question?
  241. looking for ideas on a small tube amp stand?
  242. Cascode gain stage info?????
  243. hi gain preamp
  244. Tube flashing
  245. Bogen tube amp with variable Damping Factor
  246. Question re Allen Wright PP-1cs
  247. What is a good Tube tester to get?
  248. High Gain Preamp
  249. SACThailand
  250. You know you're a tube junky when...

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