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

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