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  1. paralelled tube
  2. ECC88 at 12 volts
  3. azarus preamplifier schematics
  4. Which valve amp do I keep?
  5. Favorite Driver for 845
  6. Somebody has that magazine?
  7. modify parallel push-pull EL84 to single push-pull
  8. How long it will last?
  9. Hurricane Wilma
  10. Suddenly, no output from Copland CTA-501
  11. 807 Audio Amp Progress Report
  12. Choke induced Hum
  13. Wim's DC EL84 amp
  14. Drivers for a KT88 pair
  15. what do u think of these tubes?
  16. 12BH7 spice 3f4 model
  17. Clone Marantz M7 Line Amp
  18. PIO caps question
  19. 6HF5 sweep tube single ended amp
  20. My first DIY
  21. Winding A Interstage Transformer
  22. help building 12ax7/el84 amp
  23. PSE schematic
  24. Using PSU Designer to calculate DC filament supply
  25. Dynaco stereo 70 driver board
  26. Excellent and cheap DIY INTERSTAGE!
  27. Need Advice with Timer Relay Shut Off
  28. standby switch
  29. Purpose of small cap across PSU rails?
  30. 6SL7 + EL34 SE Audio Amp
  31. 6C33 fixed/auto bias ?
  32. Long Tail and Local feedback
  33. I look for EAR 859 pictures.
  34. Designing a simple tube opamp?
  35. Difference between Hammond 200 and 300 series
  36. Ultrapath Cap
  37. where to find 600v 18awg wire??
  38. Suggested power supply B+?
  39. Variable Impedence Mic Preamp
  40. Help me stop my preamp from farting!
  41. Just bought some of those Russian paper/oil caps off of ebay
  42. The Valhalla power amplifier project
  43. help! EL84's dying
  44. Could check this pentode-mu stage thingy for me (disclaimer* it is for a gutar amp)
  45. ASC Polypropylene And Oil Capacitors
  46. pots... log or linear?
  47. Cracking sound through speakers.
  48. EL84-PP - Why just 5W?
  49. Brook12a schematics...
  50. LongTailedPair gain -> how to calculate?
  51. Wiring secondaries of two power trafo's in parallel?
  52. RIAA "Tube Simulations"
  53. Has anyone built this 'Svetlana Six Pack' ?
  54. updated pics of tube project
  55. help 12FV7 datasheet
  56. Why does my oversized preamp trafo gets much too hot?!?!?
  57. 6sn7 pre
  58. 12AY7/6SN7 preamp PSU check
  59. CT design trans application
  60. Shindo schematics?
  61. Octal Hagerman Cornet Experiences
  62. Zenith AM/FM C835 tube Radio schematic
  63. Oh man, my telefunken stoops...
  64. 42 single ended
  65. EL34 Feedback circuit
  66. Spice model for EL86/6CW5
  67. Ditching some High Voltage
  68. Newbie want to build simple tube preamp&psu!need help!
  69. Phono Pre-Design Input
  70. HV Direct Drive tube amp.
  71. A question about Cathodyne/split load/concertina PI's
  72. Kofi Annan in: "Hummin' Trafo Blues"
  73. Rattling Tube
  74. Berning output buffer
  75. Tube PSU Question
  76. JoLida Envoy PreAmp or DIY?
  77. Looking for Audio Note P1SE schematics.
  78. Which SE-ECL82 amp to build?
  79. PSU Help
  80. Help for stabilisator Data
  81. How much ripple on B+ is allowed?
  82. Typical 2A3 hum?
  83. PV10 PS transformer
  84. 300B Filament Voltage Range
  85. Mullard EL34-Authenticity Verification
  86. Philips V30M amplifier
  87. PWM power supply???
  88. Regulated psu for tube preamp
  89. About to start a new project: PP 6CK4s...
  90. Komuro DC 300B crct w/ 50dht?
  91. DIY speaker attenuator?
  92. So what are some good 7-pin, hi mu, low noise/microphonic tubes??
  93. Audio meet pics from this past weekend
  94. Audio Note M7 Line Preamp??
  95. PP 7591 amp
  96. Tube op amps
  97. Please tell me how to upgrade Music Angel KT88 amplifier?
  98. Do I want a fan?
  99. 3rd Aikido?
  100. More Questions about A.Wrights PP1C
  101. 7591s flashing on start-up?
  102. first amp build... wiring questions
  103. pentode aikido driver for 300b
  104. Question about single NOS triodes in cascode for fun
  105. oscillating PP EL84 amplifier
  106. 6H30P based cathode-follower schema kindly requested
  107. Cathode follower question
  108. Bunch of old parts, worth anything?
  109. 6922 vs. 6N1P Bass Response
  110. Behringer reaches a new high in tube "transparency"
  111. Input stage tube
  112. Using transformers as choke?
  113. Resistors
  114. melos gk1 preamps anybody?
  115. Looking for a thread...
  116. DG7-32 based oscillograph schematic needed
  117. Try!!! Ef37a + 6c33c
  118. qustion on tube grade wiring
  119. Balanced pre-amp attempt
  120. GRRR.. sanity check on PTx current please
  121. How do you measure ripple on the B+?
  122. Aikido + EL34 Integrated
  123. heater voltage: why ac, and not dc?
  124. Ideas for using one ECL82 in a preamp
  125. Question about 12AU7
  126. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  127. WIMA FKP1 1000V as coupling cap ??
  128. Ping amperex re: Hammond organs
  129. schematic needen variable power supply
  130. Distributed Load/Balanced Bridge Connection
  131. CCS, feedback and grid leak questions.
  132. Vdd
  133. Help with 6GW8/ECL86 tubes??
  134. Best amplifier (recomendations) for Fostex FE108ez?
  135. Quick valve construction question
  136. Poindexter's 6v6 PP amp
  137. need some help with Ohm's law-fast!
  138. hybrid rectifier question
  139. I really, really wish I hadn't done that...
  140. Quicksilver 8417 conversion
  141. Supratek
  142. remote OPT, stupid idea ?
  143. Autoformer output stage
  144. Remote Power Supply: A Stupid Idea?
  145. Rjm simple tube phono pre
  146. Voltage controlled filter with tubes ??
  147. Does this look right to you?
  148. PWM amplifier hooked onto a tube preamp
  149. Zenith Console Opt Question, Odd Secondary
  150. Marchand LN108 Tube Phono Preamp
  151. Anyone care to express an opinion on this output Transformer
  152. 6L6 Triode strapped amp suggestions
  153. 6F1 and 6P2 Equivalents
  154. in memoriam Fred N. AKA 807
  155. Perplexed by 5AR4 Tube Socket? Picture Included
  156. Push pull 300B and more than a few questions...
  157. First tube project.
  158. DHT learning
  159. how do i add adjustable bias on amp?
  160. Tube tester: Accurate Instruments Model 157
  161. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  162. Design Questions
  163. SRPP + Gainclone
  164. dht p-p filament question
  165. Report - 2005 London HiFi Show
  166. Want to build hi - power amp
  167. Can I mod this circuit to use 6922 tubes?
  168. tube preamp kit question (again?)
  169. 3f4 spice models needed
  170. Back to Back transformers to get +B of 200V ??
  171. New amp project-some ideas of my own and looking for input from others...
  172. Emphasising the transients, but making the mediocre listenable
  173. Looking For a PP 6Y6GA Design
  174. Industrial vs Commercial amps and OPT's
  175. ECC99 operating points?
  176. Preamp suggestions for a tube newbie
  177. very odd thing happening in my amp... help
  178. 47 Penthode in triode mode.
  179. Capacitor value
  180. PSE bias how?
  181. GM70 Power supply
  182. interstage convert to phase splitter
  183. EL84 SE advice'n'schematics needed
  184. world's heaviest 2A3 amp?
  185. How To Tell What Tubes To Keep
  186. PX4 Trauma
  187. An amplifier project I'm looking for...
  188. Your 100volt plus moment
  189. Dynaco rectifier replacement?
  190. SET on a budget
  191. PSU Design Learning Links
  192. Expensive Commercial Amps
  193. Tube modified CD player with TDA1543
  194. Types of polypropylene capacitor....
  195. Fluorescent lamp choke - use in tube amp?
  196. Tube Overdrive
  197. Mains Transformer for EL34PP
  198. Please review schematic
  199. Wire size for projects?
  200. super simple tube amp needed...
  201. Matlab-based triode modelling software
  202. 12AT7 Pre-amp schematic, where to find?
  203. Test settings for Hickok 539A for 183/483 tube?
  204. choke input ripple level?
  205. 120 Hz Buzz Unplugged
  206. 300B like 845
  207. DC filament ground and high voltage ground
  208. DIY Club remote volume help?
  209. Aesthetix Rhea and I/O diagrams?
  210. Electrolytic vs polyprop capacitors
  211. Cathode Bypass Cap questions
  212. rectification and xfmr stress
  213. Audio Research
  214. Anybody got Melos MA-111 Schematic?
  215. Problem locating power supply
  216. Timer Relay
  217. Help With Jukebox Amp
  218. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  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. 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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