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  1. Tube modified CD player with TDA1543
  2. Fluorescent lamp choke - use in tube amp?
  3. Tube Overdrive
  4. Mains Transformer for EL34PP
  5. Please review schematic
  6. Wire size for projects?
  7. super simple tube amp needed...
  8. Matlab-based triode modelling software
  9. 12AT7 Pre-amp schematic, where to find?
  10. choke input ripple level?
  11. 120 Hz Buzz Unplugged
  12. 300B like 845
  13. DC filament ground and high voltage ground
  14. DIY Club remote volume help?
  15. Aesthetix Rhea and I/O diagrams?
  16. Cathode Bypass Cap questions
  17. rectification and xfmr stress
  18. Audio Research
  19. Anybody got Melos MA-111 Schematic?
  20. Problem locating power supply
  21. Timer Relay
  22. Help With Jukebox Amp
  23. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  24. 6W6 as a driver
  25. Choosing the best EL34 pp opt
  26. Your opinion, please
  27. Tube surround sound
  28. Could you guys check this cascode article for me
  29. what would happen if...
  30. A Heretical Unity Gain Line Stage part III
  31. Which ECC83 tube and caps question
  32. Paralle Push Pull Simulclass
  33. organ amp question
  34. Stereo build- Mikael Abdellah's KT88 SE amp
  35. Audio Research AC21 cross over
  36. First DIY amp pics-as promised!
  37. emission-lab info
  38. Simple EL84 PP design needed
  39. 6C33 Circlotron
  40. Valves glow fierce
  41. Kirung's GM70 SE-Amps from Korea
  42. Digital Pots
  43. Troubleshooting First Tube Project
  44. Millett Low mu Preamp help
  45. thoughts about a 'universal' preamp
  46. Morgan Jones's Bevois Valley amp...
  47. Aikido line stage results? share yours
  48. HELP with breadboard layout!!!
  49. balanced line stage schematic needed
  50. Its Alive!! First Diy Amp Works!!
  51. Duncan Munro Psud primer please?
  52. Preamp volume control??
  53. Welborne 300b DRD plate current
  54. Active compensation...
  55. Calculating expected output power.
  56. Hybrid X line amp
  57. any way to fix a end cap on a 807 power tube
  58. power tube question
  59. MJ head-amp- how does it sound?
  60. Quick Aikido question
  61. What kind of amp?
  62. Problem with cathode resistor
  63. 2A3 DRD schematic wanted
  64. reduce before amplifying?
  65. 6AS7-G RCA application considerations
  66. Matisse Fantasy waveform output test
  67. El84/6bq5/ecc83 + Ef86 = Dc Pp
  68. Searching for simple circuit
  69. McIntosh MC60 Screens
  70. Improve this Pilot 240 (EL84/6BQ5)
  71. Eimac 35TG
  72. power supply issues
  73. Which Amperex ECC88 is the best?
  74. Grid battery bias on phono....
  75. EL34 identification
  76. UL vs SE
  77. 6sn7 operating points
  78. HELP! B+ voltage problem/burning power resistor
  79. are these tubes any good ?????
  80. E280F Triode mode operating point
  81. Free Lunch/Monkey/DRD inspired 2A3
  82. 2nd Aikido PCB and PSU groupbuy
  83. Newbie question...
  84. Help in getting more gain out of 300B SE
  85. ECC808 what to do
  86. Microphonics When Hot, Raytheon CK5842
  87. MOSCODE hybrid DIY
  88. transformer question
  89. help, my amp humz
  90. Le tube preamp
  91. Ideal operating point of 6sj7
  92. Anyone tried the Hammond 1642SE in a BIG SE amp?
  93. MOSFET current source as triode load
  94. C-core transformers
  95. choke and choke
  96. suggestions for 300B tubes
  97. Differential input stage
  98. rca conversion
  99. heating
  100. Russian 6N8S/1578
  101. DIY tube amp squeals when turned up
  102. ECL80-Amp from Andreas Kirschner
  103. HSS preamp, anyone care to comment
  104. help me design an input stage for 6b4G PP
  105. Instrument/Microphone Tube Pre-amp
  106. first-time tube DIY project...phono preamp
  107. A question regarding schematics
  108. My first creation
  109. Your opinion on this VCCS heater supply please.
  110. Looking for ORIGINAL GE 6L6GC
  111. Need help - O/T trannies for future project
  112. ECL82 (6BM8) PP Stereo
  113. first DIY amp start up-yowza HELP!
  114. Ronette Info
  115. GE 5687 (5 stars)
  116. Help: Toroid choke for a preamp
  117. does meter degrade sound ?
  118. Eye Tube (1629) controller help
  119. Scott 99B & 99C Public Auction Find
  120. tube id book
  121. radio , tv station and radar stations still use the best single end class a amplifier
  122. Stupid question?
  123. looking for ideas on a small tube amp stand?
  124. Cascode gain stage info?????
  125. hi gain preamp
  126. Tube flashing
  127. Bogen tube amp with variable Damping Factor
  128. Question re Allen Wright PP-1cs
  129. High Gain Preamp
  130. SACThailand
  131. You know you're a tube junky when...
  132. 6AU6 to do EF86 duty?
  133. 6Н28Б-В datasheet?
  134. Is single ended Class A better than push-pull?
  135. Is 845 better than 211 tube amplifier?
  136. Cool Fireworks (tubes are tough!)
  137. Big Big hum ???
  138. 5687 filament heater question
  139. Anyone know agood MOSFET drive for RCA 811A Tube?
  140. Who is into musical instrument tube amplification?
  141. buffer stage ECC88 or ECC83?
  142. EL34 Integrated
  143. Solid state HT regulator??
  144. Tubes driving dipole mids
  145. How do I turn an high current signal into a line level signal??
  146. Peer review, UL question
  147. Grundig TK60 - Where is the Line Out ?
  148. 12AX7, EL34 or 6L6 design wanted
  149. RCA to Speakers?
  150. Morgan Jones - Valve books
  151. Any one tried to use subminiature for input tubes?
  152. Tube data for current manufacturers?
  153. Pentode to Triode Switch
  154. fried Heatkit IP-17 power supply
  155. Suggestions for Tube Amplifier
  156. SMPS for 300B heater ?
  157. What does this mean?
  158. heater/cathode query
  159. Bottlehead S.E.X Amp
  160. Old Meets New
  161. 6336-SE modification
  162. 6as7 pre-amp questions.
  163. Help in calculating NFB loop.
  164. ECL86 - quick and dirty
  165. preamp tubes change
  166. Parallel PP ECL86
  167. Anyone build a Minimal Reactance PSU?
  168. Transformer hook-up question to 115V AC line
  169. Langevin Schematic Archive
  170. PPP EL84 Amp
  171. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  172. Aikido: Width control
  173. Shielded Input Wire
  174. choke
  175. Multiple Inputs in One Shielded Cable?
  176. Presence control on a SE ?
  177. Question : pentode ccs schematic ?
  178. right capacitor value?
  179. Anybody knows this tube--WE 430C
  180. Transformer substitution help
  181. CFB Issues
  182. Please Suggest: Old Tube Usages
  183. Very powerful push/pull circuit
  184. Project choice for KT88
  185. Tamura F-475 in Parafeed?
  186. Kofi Annan in: "Push and Pull with Me"
  187. Schmitt dephaser
  188. Anyone using Chelmer Valves?
  189. SET w/ 300B Ultrapath + Parafeed Typologies
  190. a question about local feedback
  191. about input transformer
  192. Power transformer selection madness
  193. EF91 Line Stage questions
  194. Sourcing parts for Dynaco PAS rebuild
  195. HH Scott 223 monoblock schematics
  196. info needed on the 7c6 tube
  197. A final question on grounding(yeah right!)
  198. Schematics and Manuals Site Found
  199. Sprague/Cap Color Codes ?
  200. saba console radio working?
  201. Feedback and mu-followers
  202. Hundreds of 6AL5s
  203. Orange/Red Spot on The Anode of Sovtek 6L6GC
  204. Best way to isolate non-isolated RCAs?
  205. Power Resistor Smoking on HF-81
  206. Audio Innovations L-2
  207. first tube project
  208. And now a question about power switch...
  209. 2E24 ultralinear
  210. tube pin numbers
  211. Will This possibly work?
  212. What is the right current for a 300B at 400V and -80V grid bias?
  213. Simple Cap-Coupled CF Advise Needed
  214. tube amp layout reality check
  215. plitron
  216. How long does a 7199 last?
  217. CAE Cascode Diffamp Front End
  218. 6.3V Rectifier Tube Lit by 5V
  219. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  220. WE121A, Please critique me
  221. Grommes / Western Electric G5M Tube Mixer Mods
  222. schemes needed
  223. PP to PPP
  224. aikido voltage swing
  225. voltage drop across a CCS...
  226. bogen db20 Schematic
  227. Mullards branded as Telefunkens???
  228. Pentodes; plate resistance; damping...
  229. PP amp has become SE?
  230. anyone mod a NYAL Moscode superIt?
  231. update to phillips sepp otl?
  232. DC filament supply LC or CL
  233. No Bass Control
  234. Unison Research Simply2 or s2schematics
  235. Border Patrol Power Supply
  236. Any leads on repairing a vintage Alamo Capri tube amp? >>
  237. nanocrystalline amorphous OPT
  238. El84 Pp
  239. Preamp, Euridice?
  240. Has anyone built a PS like this?
  241. Tube sockets in Eagle?
  242. E235L tubes
  243. Grid Input Transformers
  244. Aikido Power Supply
  245. ralph power pp amp with 807 ?
  246. tube stores in moscow
  247. 211 and 845
  248. Need help with amp
  249. Altec 1570B
  250. UL to triode

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