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  1. selective tone control
  2. time for a laugh
  3. Another New Build Pictures ( G' Amp )
  4. Help finding: 7-pin PCB socket, 90deg horizontal
  5. LC vs. CLC Theory
  6. Input transformer & volume pot
  7. MC34-B Quit working suddenly (newb)
  8. Golden Tube Audio 300B se
  9. Wanted: Pioneer sa-810 schematic
  10. se el34 finally
  11. Tube design question
  12. Marantz 8 clone build
  13. Active RIAA Eq for tubes- Brian Clark's article
  14. pre hums - even unplugged!
  15. Push Pull Preamplifier anybody?
  16. 6AN8 tube question
  17. Distortion in Fisher 800C
  18. 20% versus 43% screen tap
  19. Van der Veen transformers
  20. Want to upgrade Velleman K8020
  21. KT88 Power supply question
  22. TX coupled, pentode linestage
  23. phase splitter question
  24. New preamp project is online
  25. Newbie: Which amps to build?
  26. Which valve, 5842 (417A) or 6H30
  27. How do you punch out your chassis holes?
  28. paralelled tube
  29. ECC88 at 12 volts
  30. azarus preamplifier schematics
  31. Which valve amp do I keep?
  32. Favorite Driver for 845
  33. Somebody has that magazine?
  34. modify parallel push-pull EL84 to single push-pull
  35. How long it will last?
  36. Hurricane Wilma
  37. Suddenly, no output from Copland CTA-501
  38. 807 Audio Amp Progress Report
  39. Choke induced Hum
  40. Wim's DC EL84 amp
  41. Drivers for a KT88 pair
  42. what do u think of these tubes?
  43. 12BH7 spice 3f4 model
  44. Clone Marantz M7 Line Amp
  45. 6HF5 sweep tube single ended amp
  46. My first DIY
  47. Winding A Interstage Transformer
  48. help building 12ax7/el84 amp
  49. PSE schematic
  50. Using PSU Designer to calculate DC filament supply
  51. Dynaco stereo 70 driver board
  52. Excellent and cheap DIY INTERSTAGE!
  53. Need Advice with Timer Relay Shut Off
  54. standby switch
  55. Purpose of small cap across PSU rails?
  56. 6SL7 + EL34 SE Audio Amp
  57. 6C33 fixed/auto bias ?
  58. Long Tail and Local feedback
  59. I look for EAR 859 pictures.
  60. Designing a simple tube opamp?
  61. Difference between Hammond 200 and 300 series
  62. Ultrapath Cap
  63. where to find 600v 18awg wire??
  64. Suggested power supply B+?
  65. Variable Impedence Mic Preamp
  66. Help me stop my preamp from farting!
  67. The Valhalla power amplifier project
  68. help! EL84's dying
  69. Could check this pentode-mu stage thingy for me (disclaimer* it is for a gutar amp)
  70. ASC Polypropylene And Oil Capacitors
  71. pots... log or linear?
  72. Cracking sound through speakers.
  73. EL84-PP - Why just 5W?
  74. Brook12a schematics...
  75. LongTailedPair gain -> how to calculate?
  76. Wiring secondaries of two power trafo's in parallel?
  77. RIAA "Tube Simulations"
  78. Has anyone built this 'Svetlana Six Pack' ?
  79. updated pics of tube project
  80. help 12FV7 datasheet
  81. Why does my oversized preamp trafo gets much too hot?!?!?
  82. 6sn7 pre
  83. 12AY7/6SN7 preamp PSU check
  84. CT design trans application
  85. Shindo schematics?
  86. Octal Hagerman Cornet Experiences
  87. Zenith AM/FM C835 tube Radio schematic
  88. Oh man, my telefunken stoops...
  89. 42 single ended
  90. EL34 Feedback circuit
  91. Spice model for EL86/6CW5
  92. Ditching some High Voltage
  93. Newbie want to build simple tube preamp&psu!need help!
  94. Phono Pre-Design Input
  95. HV Direct Drive tube amp.
  96. A question about Cathodyne/split load/concertina PI's
  97. Kofi Annan in: "Hummin' Trafo Blues"
  98. Rattling Tube
  99. Berning output buffer
  100. Tube PSU Question
  101. JoLida Envoy PreAmp or DIY?
  102. Looking for Audio Note P1SE schematics.
  103. Which SE-ECL82 amp to build?
  104. PSU Help
  105. Help for stabilisator Data
  106. How much ripple on B+ is allowed?
  107. Typical 2A3 hum?
  108. PV10 PS transformer
  109. 300B Filament Voltage Range
  110. Mullard EL34-Authenticity Verification
  111. Philips V30M amplifier
  112. PWM power supply???
  113. Regulated psu for tube preamp
  114. About to start a new project: PP 6CK4s...
  115. Komuro DC 300B crct w/ 50dht?
  116. DIY speaker attenuator?
  117. So what are some good 7-pin, hi mu, low noise/microphonic tubes??
  118. Audio meet pics from this past weekend
  119. Audio Note M7 Line Preamp??
  120. PP 7591 amp
  121. Tube op amps
  122. Please tell me how to upgrade Music Angel KT88 amplifier?
  123. Do I want a fan?
  124. 3rd Aikido?
  125. More Questions about A.Wrights PP1C
  126. 7591s flashing on start-up?
  127. first amp build... wiring questions
  128. pentode aikido driver for 300b
  129. Question about single NOS triodes in cascode for fun
  130. oscillating PP EL84 amplifier
  131. 6H30P based cathode-follower schema kindly requested
  132. Cathode follower question
  133. Bunch of old parts, worth anything?
  134. 6922 vs. 6N1P Bass Response
  135. Behringer reaches a new high in tube "transparency"
  136. Input stage tube
  137. Using transformers as choke?
  138. Resistors
  139. melos gk1 preamps anybody?
  140. Looking for a thread...
  141. DG7-32 based oscillograph schematic needed
  142. Try!!! Ef37a + 6c33c
  143. qustion on tube grade wiring
  144. Balanced pre-amp attempt
  145. GRRR.. sanity check on PTx current please
  146. How do you measure ripple on the B+?
  147. Aikido + EL34 Integrated
  148. heater voltage: why ac, and not dc?
  149. Ideas for using one ECL82 in a preamp
  150. Question about 12AU7
  151. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  152. WIMA FKP1 1000V as coupling cap ??
  153. Ping amperex re: Hammond organs
  154. schematic needen variable power supply
  155. Distributed Load/Balanced Bridge Connection
  156. CCS, feedback and grid leak questions.
  157. Vdd
  158. Help with 6GW8/ECL86 tubes??
  159. Best amplifier (recomendations) for Fostex FE108ez?
  160. Quick valve construction question
  161. Poindexter's 6v6 PP amp
  162. need some help with Ohm's law-fast!
  163. hybrid rectifier question
  164. I really, really wish I hadn't done that...
  165. Quicksilver 8417 conversion
  166. Supratek
  167. remote OPT, stupid idea ?
  168. Autoformer output stage
  169. Remote Power Supply: A Stupid Idea?
  170. Rjm simple tube phono pre
  171. Voltage controlled filter with tubes ??
  172. Does this look right to you?
  173. PWM amplifier hooked onto a tube preamp
  174. Zenith Console Opt Question, Odd Secondary
  175. Marchand LN108 Tube Phono Preamp
  176. Anyone care to express an opinion on this output Transformer
  177. 6L6 Triode strapped amp suggestions
  178. 6F1 and 6P2 Equivalents
  179. in memoriam Fred N. AKA 807
  180. Perplexed by 5AR4 Tube Socket? Picture Included
  181. Push pull 300B and more than a few questions...
  182. First tube project.
  183. DHT learning
  184. how do i add adjustable bias on amp?
  185. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  186. Design Questions
  187. SRPP + Gainclone
  188. dht p-p filament question
  189. Report - 2005 London HiFi Show
  190. Want to build hi - power amp
  191. Can I mod this circuit to use 6922 tubes?
  192. tube preamp kit question (again?)
  193. 3f4 spice models needed
  194. Back to Back transformers to get +B of 200V ??
  195. New amp project-some ideas of my own and looking for input from others...
  196. Emphasising the transients, but making the mediocre listenable
  197. Looking For a PP 6Y6GA Design
  198. Industrial vs Commercial amps and OPT's
  199. ECC99 operating points?
  200. Preamp suggestions for a tube newbie
  201. very odd thing happening in my amp... help
  202. 47 Penthode in triode mode.
  203. Capacitor value
  204. PSE bias how?
  205. GM70 Power supply
  206. interstage convert to phase splitter
  207. EL84 SE advice'n'schematics needed
  208. world's heaviest 2A3 amp?
  209. How To Tell What Tubes To Keep
  210. PX4 Trauma
  211. An amplifier project I'm looking for...
  212. Your 100volt plus moment
  213. Dynaco rectifier replacement?
  214. SET on a budget
  215. PSU Design Learning Links
  216. Expensive Commercial Amps
  217. Tube modified CD player with TDA1543
  218. Fluorescent lamp choke - use in tube amp?
  219. Tube Overdrive
  220. Mains Transformer for EL34PP
  221. Please review schematic
  222. Wire size for projects?
  223. super simple tube amp needed...
  224. Matlab-based triode modelling software
  225. 12AT7 Pre-amp schematic, where to find?
  226. choke input ripple level?
  227. 120 Hz Buzz Unplugged
  228. 300B like 845
  229. DC filament ground and high voltage ground
  230. DIY Club remote volume help?
  231. Aesthetix Rhea and I/O diagrams?
  232. Cathode Bypass Cap questions
  233. rectification and xfmr stress
  234. Audio Research
  235. Anybody got Melos MA-111 Schematic?
  236. Problem locating power supply
  237. Timer Relay
  238. Help With Jukebox Amp
  239. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  240. 6W6 as a driver
  241. Choosing the best EL34 pp opt
  242. Your opinion, please
  243. Tube surround sound
  244. Could you guys check this cascode article for me
  245. what would happen if...
  246. A Heretical Unity Gain Line Stage part III
  247. Which ECC83 tube and caps question
  248. Paralle Push Pull Simulclass
  249. organ amp question
  250. Stereo build- Mikael Abdellah's KT88 SE amp

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