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  1. Choke induced Hum
  2. Wim's DC EL84 amp
  3. Drivers for a KT88 pair
  4. what do u think of these tubes?
  5. 12BH7 spice 3f4 model
  6. Clone Marantz M7 Line Amp
  7. PIO caps question
  8. New Build Pics (guitar Amp)
  9. 6HF5 sweep tube single ended amp
  10. My first DIY
  11. Winding A Interstage Transformer
  12. help building 12ax7/el84 amp
  13. PSE schematic
  14. Using PSU Designer to calculate DC filament supply
  15. Dynaco stereo 70 driver board
  16. Excellent and cheap DIY INTERSTAGE!
  17. Need Advice with Timer Relay Shut Off
  18. standby switch
  19. Purpose of small cap across PSU rails?
  20. 6SL7 + EL34 SE Audio Amp
  21. guitar tube amp as home stereo
  22. 6C33 fixed/auto bias ?
  23. Long Tail and Local feedback
  24. I look for EAR 859 pictures.
  25. Designing a simple tube opamp?
  26. Difference between Hammond 200 and 300 series
  27. Ultrapath Cap
  28. where to find 600v 18awg wire??
  29. Suggested power supply B+?
  30. Variable Impedence Mic Preamp
  31. Help me stop my preamp from farting!
  32. Just bought some of those Russian paper/oil caps off of ebay
  33. The Valhalla power amplifier project
  34. help! EL84's dying
  35. Could check this pentode-mu stage thingy for me (disclaimer* it is for a gutar amp)
  36. ASC Polypropylene And Oil Capacitors
  37. pots... log or linear?
  38. Cracking sound through speakers.
  39. EL84-PP - Why just 5W?
  40. Brook12a schematics...
  41. LongTailedPair gain -> how to calculate?
  42. Wiring secondaries of two power trafo's in parallel?
  43. RIAA "Tube Simulations"
  44. Has anyone built this 'Svetlana Six Pack' ?
  45. updated pics of tube project
  46. help 12FV7 datasheet
  47. Why does my oversized preamp trafo gets much too hot?!?!?
  48. 6sn7 pre
  49. 12AY7/6SN7 preamp PSU check
  50. CT design trans application
  51. Shindo schematics?
  52. Octal Hagerman Cornet Experiences
  53. My first (guitar) amplifier
  54. Zenith AM/FM C835 tube Radio schematic
  55. Oh man, my telefunken stoops...
  56. 42 single ended
  57. EL34 Feedback circuit
  58. Spice model for EL86/6CW5
  59. Ditching some High Voltage
  60. Newbie want to build simple tube preamp&psu!need help!
  61. Phono Pre-Design Input
  62. HV Direct Drive tube amp.
  63. A question about Cathodyne/split load/concertina PI's
  64. Kofi Annan in: "Hummin' Trafo Blues"
  65. Rattling Tube
  66. Berning output buffer
  67. Tube PSU Question
  68. JoLida Envoy PreAmp or DIY?
  69. Looking for Audio Note P1SE schematics.
  70. Which SE-ECL82 amp to build?
  71. PSU Help
  72. Help for stabilisator Data
  73. How much ripple on B+ is allowed?
  74. Typical 2A3 hum?
  75. PV10 PS transformer
  76. 300B Filament Voltage Range
  77. Mullard EL34-Authenticity Verification
  78. Fading or Frying Fender Clone Issue
  79. Philips V30M amplifier
  80. PWM power supply???
  81. Regulated psu for tube preamp
  82. About to start a new project: PP 6CK4s...
  83. Komuro DC 300B crct w/ 50dht?
  84. Anyone out there try a SEPP OTL guitar amp??
  85. DIY speaker attenuator?
  86. So what are some good 7-pin, hi mu, low noise/microphonic tubes??
  87. Audio meet pics from this past weekend
  88. Audio Note M7 Line Preamp??
  89. PP 7591 amp
  90. Tube op amps
  91. Please tell me how to upgrade Music Angel KT88 amplifier?
  92. Do I want a fan?
  93. 3rd Aikido?
  94. More Questions about A.Wrights PP1C
  95. 7591s flashing on start-up?
  96. first amp build... wiring questions
  97. pentode aikido driver for 300b
  98. Question about single NOS triodes in cascode for fun
  99. oscillating PP EL84 amplifier
  100. 6H30P based cathode-follower schema kindly requested
  101. Cathode follower question
  102. Bunch of old parts, worth anything?
  103. 6922 vs. 6N1P Bass Response
  104. Behringer reaches a new high in tube "transparency"
  105. Input stage tube
  106. Using transformers as choke?
  107. Resistors
  108. melos gk1 preamps anybody?
  109. Looking for a thread...
  110. DG7-32 based oscillograph schematic needed
  111. Try!!! Ef37a + 6c33c
  112. qustion on tube grade wiring
  113. Balanced pre-amp attempt
  114. GRRR.. sanity check on PTx current please
  115. How do you measure ripple on the B+?
  116. Aikido + EL34 Integrated
  117. heater voltage: why ac, and not dc?
  118. Ideas for using one ECL82 in a preamp
  119. Question about 12AU7
  120. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  121. WIMA FKP1 1000V as coupling cap ??
  122. Ping amperex re: Hammond organs
  123. schematic needen variable power supply
  124. Distributed Load/Balanced Bridge Connection
  125. CCS, feedback and grid leak questions.
  126. Vdd
  127. Help with 6GW8/ECL86 tubes??
  128. Best amplifier (recomendations) for Fostex FE108ez?
  129. Quick valve construction question
  130. Poindexter's 6v6 PP amp
  131. need some help with Ohm's law-fast!
  132. hybrid rectifier question
  133. I really, really wish I hadn't done that...
  134. Quicksilver 8417 conversion
  135. Supratek
  136. remote OPT, stupid idea ?
  137. Autoformer output stage
  138. Remote Power Supply: A Stupid Idea?
  139. Rjm simple tube phono pre
  140. Voltage controlled filter with tubes ??
  141. Does this look right to you?
  142. PWM amplifier hooked onto a tube preamp
  143. Zenith Console Opt Question, Odd Secondary
  144. Marchand LN108 Tube Phono Preamp
  145. Anyone care to express an opinion on this output Transformer
  146. 6L6 Triode strapped amp suggestions
  147. 6F1 and 6P2 Equivalents
  148. in memoriam Fred N. AKA 807
  149. Perplexed by 5AR4 Tube Socket? Picture Included
  150. Push pull 300B and more than a few questions...
  151. First tube project.
  152. DHT learning
  153. how do i add adjustable bias on amp?
  154. Tube tester: Accurate Instruments Model 157
  155. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  156. Design Questions
  157. SRPP + Gainclone
  158. dht p-p filament question
  159. Report - 2005 London HiFi Show
  160. Want to build hi - power amp
  161. Gibson Skylark Grouding Questions
  162. Can I mod this circuit to use 6922 tubes?
  163. tube preamp kit question (again?)
  164. 3f4 spice models needed
  165. Back to Back transformers to get +B of 200V ??
  166. New amp project-some ideas of my own and looking for input from others...
  167. Emphasising the transients, but making the mediocre listenable
  168. Looking For a PP 6Y6GA Design
  169. Industrial vs Commercial amps and OPT's
  170. ECC99 operating points?
  171. Preamp suggestions for a tube newbie
  172. very odd thing happening in my amp... help
  173. 47 Penthode in triode mode.
  174. Capacitor value
  175. PSE bias how?
  176. GM70 Power supply
  177. interstage convert to phase splitter
  178. EL84 SE advice'n'schematics needed
  179. world's heaviest 2A3 amp?
  180. How To Tell What Tubes To Keep
  181. PX4 Trauma
  182. An amplifier project I'm looking for...
  183. Your 100volt plus moment
  184. Dynaco rectifier replacement?
  185. SET on a budget
  186. PSU Design Learning Links
  187. Expensive Commercial Amps
  188. Tube modified CD player with TDA1543
  189. Types of polypropylene capacitor....
  190. Fluorescent lamp choke - use in tube amp?
  191. Tube Overdrive
  192. Mains Transformer for EL34PP
  193. Please review schematic
  194. Wire size for projects?
  195. super simple tube amp needed...
  196. Modifing A Fender Bassman Scheme
  197. Matlab-based triode modelling software
  198. 12AT7 Pre-amp schematic, where to find?
  199. Test settings for Hickok 539A for 183/483 tube?
  200. choke input ripple level?
  201. 120 Hz Buzz Unplugged
  202. 300B like 845
  203. Guitar amp picks up radio??
  204. DC filament ground and high voltage ground
  205. Roll CALL: How many guitar amp guys are here
  206. DIY Club remote volume help?
  207. Aesthetix Rhea and I/O diagrams?
  208. Electrolytic vs polyprop capacitors
  209. Cathode Bypass Cap questions
  210. rectification and xfmr stress
  211. Audio Research
  212. Anybody got Melos MA-111 Schematic?
  213. Problem locating power supply
  214. Timer Relay
  215. Help With Jukebox Amp
  216. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  217. Help Please Guitar Project Mess
  218. Help - tube driver for spring reverb...
  219. 6W6 as a driver
  220. Choosing the best EL34 pp opt
  221. Your opinion, please
  222. Tube surround sound
  223. Could you guys check this cascode article for me
  224. what would happen if...
  225. A Heretical Unity Gain Line Stage part III
  226. Which ECC83 tube and caps question
  227. Paralle Push Pull Simulclass
  228. organ amp question
  229. Stereo build- Mikael Abdellah's KT88 SE amp
  230. Audio Research AC21 cross over
  231. First DIY amp pics-as promised!
  232. emission-lab info
  233. Simple EL84 PP design needed
  234. 6C33 Circlotron
  235. Valves glow fierce
  236. Kirung's GM70 SE-Amps from Korea
  237. Digital Pots
  238. Troubleshooting First Tube Project
  239. Millett Low mu Preamp help
  240. thoughts about a 'universal' preamp
  241. Morgan Jones's Bevois Valley amp...
  242. Aikido line stage results? share yours
  243. Fender power transformer help
  244. HELP with breadboard layout!!!
  245. balanced line stage schematic needed
  246. Its Alive!! First Diy Amp Works!!
  247. Duncan Munro Psud primer please?
  248. Preamp volume control??
  249. Welborne 300b DRD plate current
  250. Active compensation...

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