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  1. PV10 PS transformer
  2. 300B Filament Voltage Range
  3. Mullard EL34-Authenticity Verification
  4. Fading or Frying Fender Clone Issue
  5. Philips V30M amplifier
  6. PWM power supply???
  7. Regulated psu for tube preamp
  8. About to start a new project: PP 6CK4s...
  9. Komuro DC 300B crct w/ 50dht?
  10. Anyone out there try a SEPP OTL guitar amp??
  11. DIY speaker attenuator?
  12. So what are some good 7-pin, hi mu, low noise/microphonic tubes??
  13. Audio meet pics from this past weekend
  14. Audio Note M7 Line Preamp??
  15. PP 7591 amp
  16. Tube op amps
  17. Please tell me how to upgrade Music Angel KT88 amplifier?
  18. Do I want a fan?
  19. 3rd Aikido?
  20. More Questions about A.Wrights PP1C
  21. 7591s flashing on start-up?
  22. first amp build... wiring questions
  23. pentode aikido driver for 300b
  24. Question about single NOS triodes in cascode for fun
  25. oscillating PP EL84 amplifier
  26. 6H30P based cathode-follower schema kindly requested
  27. Cathode follower question
  28. Bunch of old parts, worth anything?
  29. 6922 vs. 6N1P Bass Response
  30. Behringer reaches a new high in tube "transparency"
  31. Input stage tube
  32. Using transformers as choke?
  33. Resistors
  34. melos gk1 preamps anybody?
  35. Looking for a thread...
  36. DG7-32 based oscillograph schematic needed
  37. Try!!! Ef37a + 6c33c
  38. qustion on tube grade wiring
  39. Balanced pre-amp attempt
  40. GRRR.. sanity check on PTx current please
  41. How do you measure ripple on the B+?
  42. Aikido + EL34 Integrated
  43. heater voltage: why ac, and not dc?
  44. Ideas for using one ECL82 in a preamp
  45. Question about 12AU7
  46. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  47. WIMA FKP1 1000V as coupling cap ??
  48. Ping amperex re: Hammond organs
  49. schematic needen variable power supply
  50. Distributed Load/Balanced Bridge Connection
  51. CCS, feedback and grid leak questions.
  52. Vdd
  53. Help with 6GW8/ECL86 tubes??
  54. Best amplifier (recomendations) for Fostex FE108ez?
  55. Quick valve construction question
  56. Poindexter's 6v6 PP amp
  57. need some help with Ohm's law-fast!
  58. hybrid rectifier question
  59. I really, really wish I hadn't done that...
  60. Quicksilver 8417 conversion
  61. Supratek
  62. remote OPT, stupid idea ?
  63. Autoformer output stage
  64. Remote Power Supply: A Stupid Idea?
  65. Rjm simple tube phono pre
  66. Voltage controlled filter with tubes ??
  67. Does this look right to you?
  68. PWM amplifier hooked onto a tube preamp
  69. Zenith Console Opt Question, Odd Secondary
  70. Marchand LN108 Tube Phono Preamp
  71. Anyone care to express an opinion on this output Transformer
  72. 6L6 Triode strapped amp suggestions
  73. 6F1 and 6P2 Equivalents
  74. in memoriam Fred N. AKA 807
  75. Perplexed by 5AR4 Tube Socket? Picture Included
  76. Push pull 300B and more than a few questions...
  77. First tube project.
  78. DHT learning
  79. how do i add adjustable bias on amp?
  80. Tube tester: Accurate Instruments Model 157
  81. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  82. Design Questions
  83. SRPP + Gainclone
  84. dht p-p filament question
  85. Report - 2005 London HiFi Show
  86. Want to build hi - power amp
  87. Gibson Skylark Grouding Questions
  88. Can I mod this circuit to use 6922 tubes?
  89. tube preamp kit question (again?)
  90. 3f4 spice models needed
  91. Back to Back transformers to get +B of 200V ??
  92. New amp project-some ideas of my own and looking for input from others...
  93. Emphasising the transients, but making the mediocre listenable
  94. Looking For a PP 6Y6GA Design
  95. Industrial vs Commercial amps and OPT's
  96. ECC99 operating points?
  97. Preamp suggestions for a tube newbie
  98. very odd thing happening in my amp... help
  99. 47 Penthode in triode mode.
  100. Capacitor value
  101. PSE bias how?
  102. GM70 Power supply
  103. interstage convert to phase splitter
  104. EL84 SE advice'n'schematics needed
  105. world's heaviest 2A3 amp?
  106. How To Tell What Tubes To Keep
  107. PX4 Trauma
  108. An amplifier project I'm looking for...
  109. Your 100volt plus moment
  110. Dynaco rectifier replacement?
  111. SET on a budget
  112. PSU Design Learning Links
  113. Expensive Commercial Amps
  114. Tube modified CD player with TDA1543
  115. Types of polypropylene capacitor....
  116. Fluorescent lamp choke - use in tube amp?
  117. Tube Overdrive
  118. Mains Transformer for EL34PP
  119. Please review schematic
  120. Wire size for projects?
  121. super simple tube amp needed...
  122. Modifing A Fender Bassman Scheme
  123. Matlab-based triode modelling software
  124. 12AT7 Pre-amp schematic, where to find?
  125. Test settings for Hickok 539A for 183/483 tube?
  126. choke input ripple level?
  127. 120 Hz Buzz Unplugged
  128. 300B like 845
  129. Guitar amp picks up radio??
  130. DC filament ground and high voltage ground
  131. Roll CALL: How many guitar amp guys are here
  132. DIY Club remote volume help?
  133. Aesthetix Rhea and I/O diagrams?
  134. Electrolytic vs polyprop capacitors
  135. Cathode Bypass Cap questions
  136. rectification and xfmr stress
  137. Audio Research
  138. Anybody got Melos MA-111 Schematic?
  139. Problem locating power supply
  140. Timer Relay
  141. Help With Jukebox Amp
  142. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  143. Help Please Guitar Project Mess
  144. Help - tube driver for spring reverb...
  145. 6W6 as a driver
  146. Choosing the best EL34 pp opt
  147. Your opinion, please
  148. Tube surround sound
  149. Could you guys check this cascode article for me
  150. what would happen if...
  151. A Heretical Unity Gain Line Stage part III
  152. Which ECC83 tube and caps question
  153. Paralle Push Pull Simulclass
  154. organ amp question
  155. Stereo build- Mikael Abdellah's KT88 SE amp
  156. Audio Research AC21 cross over
  157. First DIY amp pics-as promised!
  158. emission-lab info
  159. Simple EL84 PP design needed
  160. 6C33 Circlotron
  161. Valves glow fierce
  162. Kirung's GM70 SE-Amps from Korea
  163. Digital Pots
  164. Troubleshooting First Tube Project
  165. Millett Low mu Preamp help
  166. thoughts about a 'universal' preamp
  167. Morgan Jones's Bevois Valley amp...
  168. Aikido line stage results? share yours
  169. Fender power transformer help
  170. HELP with breadboard layout!!!
  171. balanced line stage schematic needed
  172. Its Alive!! First Diy Amp Works!!
  173. Duncan Munro Psud primer please?
  174. Preamp volume control??
  175. Welborne 300b DRD plate current
  176. Active compensation...
  177. Calculating expected output power.
  178. Hybrid X line amp
  179. any way to fix a end cap on a 807 power tube
  180. power tube question
  181. MJ head-amp- how does it sound?
  182. Quick Aikido question
  183. What kind of amp?
  184. Problem with cathode resistor
  185. 2A3 DRD schematic wanted
  186. reduce before amplifying?
  187. 6AS7-G RCA application considerations
  188. Matisse Fantasy waveform output test
  189. El84/6bq5/ecc83 + Ef86 = Dc Pp
  190. Searching for simple circuit
  191. McIntosh MC60 Screens
  192. Improve this Pilot 240 (EL84/6BQ5)
  193. Eimac 35TG
  194. power supply issues
  195. Which Amperex ECC88 is the best?
  196. laney PA amp questions
  197. Grid battery bias on phono....
  198. EL34 identification
  199. UL vs SE
  200. 6sn7 operating points
  201. HELP! B+ voltage problem/burning power resistor
  202. are these tubes any good ?????
  203. Free Lunch/Monkey/DRD inspired 2A3
  204. E280F Triode mode operating point
  205. EL84 Guitar amp questions (long, sorry)
  206. 2nd Aikido PCB and PSU groupbuy
  207. Newbie question...
  208. Help in getting more gain out of 300B SE
  209. ECC808 what to do
  210. Microphonics When Hot, Raytheon CK5842
  211. MOSCODE hybrid DIY
  212. transformer question
  213. help, my amp humz
  214. Le tube preamp
  215. Ideal operating point of 6sj7
  216. Convert a non-valve amp to a Valve (tube) Amp
  217. Anyone tried the Hammond 1642SE in a BIG SE amp?
  218. MOSFET current source as triode load
  219. C-core transformers
  220. choke and choke
  221. High Voltage Power Supply Caps
  222. suggestions for 300B tubes
  223. Differential input stage
  224. rca conversion
  225. heating
  226. Russian 6N8S/1578
  227. DIY tube amp squeals when turned up
  228. ECL80-Amp from Andreas Kirschner
  229. HSS preamp, anyone care to comment
  230. help me design an input stage for 6b4G PP
  231. Instrument/Microphone Tube Pre-amp
  232. first-time tube DIY project...phono preamp
  233. A question regarding schematics
  234. My first creation
  235. Your opinion on this VCCS heater supply please.
  236. Looking for ORIGINAL GE 6L6GC
  237. Need help - O/T trannies for future project
  238. ECL82 (6BM8) PP Stereo
  239. first DIY amp start up-yowza HELP!
  240. Ronette Info
  241. GE 5687 (5 stars)
  242. vox ac4
  243. Help: Toroid choke for a preamp
  244. Who makes a 1962 Bassman head chassis?
  245. does meter degrade sound ?
  246. Eye Tube (1629) controller help
  247. Scott 99B & 99C Public Auction Find
  248. tube id book
  249. radio , tv station and radar stations still use the best single end class a amplifier
  250. Stupid question?

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