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  1. Audio Research
  2. Anybody got Melos MA-111 Schematic?
  3. Problem locating power supply
  4. Timer Relay
  5. Help With Jukebox Amp
  6. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  7. Help Please Guitar Project Mess
  8. Help - tube driver for spring reverb...
  9. 6W6 as a driver
  10. Choosing the best EL34 pp opt
  11. Your opinion, please
  12. Tube surround sound
  13. Could you guys check this cascode article for me
  14. what would happen if...
  15. A Heretical Unity Gain Line Stage part III
  16. Which ECC83 tube and caps question
  17. Paralle Push Pull Simulclass
  18. organ amp question
  19. Stereo build- Mikael Abdellah's KT88 SE amp
  20. Audio Research AC21 cross over
  21. First DIY amp pics-as promised!
  22. emission-lab info
  23. Simple EL84 PP design needed
  24. 6C33 Circlotron
  25. Valves glow fierce
  26. Kirung's GM70 SE-Amps from Korea
  27. Digital Pots
  28. Troubleshooting First Tube Project
  29. Millett Low mu Preamp help
  30. thoughts about a 'universal' preamp
  31. Morgan Jones's Bevois Valley amp...
  32. Aikido line stage results? share yours
  33. Fender power transformer help
  34. HELP with breadboard layout!!!
  35. balanced line stage schematic needed
  36. Its Alive!! First Diy Amp Works!!
  37. Duncan Munro Psud primer please?
  38. Preamp volume control??
  39. Welborne 300b DRD plate current
  40. Active compensation...
  41. Calculating expected output power.
  42. Hybrid X line amp
  43. any way to fix a end cap on a 807 power tube
  44. power tube question
  45. MJ head-amp- how does it sound?
  46. Quick Aikido question
  47. What kind of amp?
  48. Problem with cathode resistor
  49. 2A3 DRD schematic wanted
  50. reduce before amplifying?
  51. 6AS7-G RCA application considerations
  52. Matisse Fantasy waveform output test
  53. El84/6bq5/ecc83 + Ef86 = Dc Pp
  54. Searching for simple circuit
  55. McIntosh MC60 Screens
  56. Improve this Pilot 240 (EL84/6BQ5)
  57. Eimac 35TG
  58. power supply issues
  59. Which Amperex ECC88 is the best?
  60. laney PA amp questions
  61. Grid battery bias on phono....
  62. EL34 identification
  63. UL vs SE
  64. 6sn7 operating points
  65. HELP! B+ voltage problem/burning power resistor
  66. are these tubes any good ?????
  67. Free Lunch/Monkey/DRD inspired 2A3
  68. E280F Triode mode operating point
  69. EL84 Guitar amp questions (long, sorry)
  70. 2nd Aikido PCB and PSU groupbuy
  71. Newbie question...
  72. Help in getting more gain out of 300B SE
  73. ECC808 what to do
  74. Microphonics When Hot, Raytheon CK5842
  75. MOSCODE hybrid DIY
  76. transformer question
  77. help, my amp humz
  78. Le tube preamp
  79. Ideal operating point of 6sj7
  80. Convert a non-valve amp to a Valve (tube) Amp
  81. Anyone tried the Hammond 1642SE in a BIG SE amp?
  82. MOSFET current source as triode load
  83. C-core transformers
  84. choke and choke
  85. High Voltage Power Supply Caps
  86. suggestions for 300B tubes
  87. Differential input stage
  88. rca conversion
  89. heating
  90. Russian 6N8S/1578
  91. DIY tube amp squeals when turned up
  92. ECL80-Amp from Andreas Kirschner
  93. HSS preamp, anyone care to comment
  94. help me design an input stage for 6b4G PP
  95. Instrument/Microphone Tube Pre-amp
  96. first-time tube DIY project...phono preamp
  97. A question regarding schematics
  98. My first creation
  99. Your opinion on this VCCS heater supply please.
  100. Looking for ORIGINAL GE 6L6GC
  101. Need help - O/T trannies for future project
  102. ECL82 (6BM8) PP Stereo
  103. first DIY amp start up-yowza HELP!
  104. Ronette Info
  105. GE 5687 (5 stars)
  106. vox ac4
  107. Help: Toroid choke for a preamp
  108. Who makes a 1962 Bassman head chassis?
  109. does meter degrade sound ?
  110. Eye Tube (1629) controller help
  111. Scott 99B & 99C Public Auction Find
  112. tube id book
  113. radio , tv station and radar stations still use the best single end class a amplifier
  114. Stupid question?
  115. looking for ideas on a small tube amp stand?
  116. Cascode gain stage info?????
  117. hi gain preamp
  118. Tube flashing
  119. Bogen tube amp with variable Damping Factor
  120. Question re Allen Wright PP-1cs
  121. What is a good Tube tester to get?
  122. High Gain Preamp
  123. SACThailand
  124. You know you're a tube junky when...
  125. 6AU6 to do EF86 duty?
  126. 6Н28Б-В datasheet?
  127. Is single ended Class A better than push-pull?
  128. Is 845 better than 211 tube amplifier?
  129. Cool Fireworks (tubes are tough!)
  130. Big Big hum ???
  131. 5687 filament heater question
  132. Anyone know agood MOSFET drive for RCA 811A Tube?
  133. Who is into musical instrument tube amplification?
  134. buffer stage ECC88 or ECC83?
  135. EL34 Integrated
  136. Solid state HT regulator??
  137. Tubes driving dipole mids
  138. How do I turn an high current signal into a line level signal??
  139. Peer review, UL question
  140. Grundig TK60 - Where is the Line Out ?
  141. 12AX7, EL34 or 6L6 design wanted
  142. RCA to Speakers?
  143. Morgan Jones - Valve books
  144. Any one tried to use subminiature for input tubes?
  145. Tube data for current manufacturers?
  146. Pentode to Triode Switch
  147. fried Heatkit IP-17 power supply
  148. Suggestions for Tube Amplifier
  149. SMPS for 300B heater ?
  150. What does this mean?
  151. heater/cathode query
  152. Bottlehead S.E.X Amp
  153. Old Meets New
  154. 6336-SE modification
  155. 6as7 pre-amp questions.
  156. Help in calculating NFB loop.
  157. ECL86 - quick and dirty
  158. Help! Q? about Ohm load in '59 Bassman RI
  159. preamp tubes change
  160. Parallel PP ECL86
  161. Anyone build a Minimal Reactance PSU?
  162. Transformer hook-up question to 115V AC line
  163. Langevin Schematic Archive
  164. PPP EL84 Amp
  165. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  166. Aikido: Width control
  167. Shielded Input Wire
  168. choke
  169. Multiple Inputs in One Shielded Cable?
  170. Presence control on a SE ?
  171. Question : pentode ccs schematic ?
  172. right capacitor value?
  173. Anybody knows this tube--WE 430C
  174. Transformer substitution help
  175. CFB Issues
  176. Please Suggest: Old Tube Usages
  177. Very powerful push/pull circuit
  178. Project choice for KT88
  179. Tamura F-475 in Parafeed?
  180. Kofi Annan in: "Push and Pull with Me"
  181. Schmitt dephaser
  182. Anyone using Chelmer Valves?
  183. SET w/ 300B Ultrapath + Parafeed Typologies
  184. a question about local feedback
  185. about input transformer
  186. Power transformer selection madness
  187. EF91 Line Stage questions
  188. Sourcing parts for Dynaco PAS rebuild
  189. HH Scott 223 monoblock schematics
  190. info needed on the 7c6 tube
  191. A final question on grounding(yeah right!)
  192. Schematics and Manuals Site Found
  193. Sprague/Cap Color Codes ?
  194. saba console radio working?
  195. Feedback and mu-followers
  196. Hundreds of 6AL5s
  197. Orange/Red Spot on The Anode of Sovtek 6L6GC
  198. Best way to isolate non-isolated RCAs?
  199. Power Resistor Smoking on HF-81
  200. Audio Innovations L-2
  201. first tube project
  202. And now a question about power switch...
  203. 2E24 ultralinear
  204. tube pin numbers
  205. Will This possibly work?
  206. What is the right current for a 300B at 400V and -80V grid bias?
  207. Simple Cap-Coupled CF Advise Needed
  208. tube amp layout reality check
  209. plitron
  210. How long does a 7199 last?
  211. Modding Tube Mixer Into DAW Front End
  212. CAE Cascode Diffamp Front End
  213. recommended resistor wattage
  214. 6.3V Rectifier Tube Lit by 5V
  215. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  216. WE121A, Please critique me
  217. Grommes / Western Electric G5M Tube Mixer Mods
  218. schemes needed
  219. PP to PPP
  220. aikido voltage swing
  221. voltage drop across a CCS...
  222. bogen db20 Schematic
  223. Mullards branded as Telefunkens???
  224. Pentodes; plate resistance; damping...
  225. PP amp has become SE?
  226. anyone mod a NYAL Moscode superIt?
  227. update to phillips sepp otl?
  228. DC filament supply LC or CL
  229. No Bass Control
  230. Unison Research Simply2 or s2schematics
  231. Border Patrol Power Supply
  232. Any leads on repairing a vintage Alamo Capri tube amp? >>
  233. nanocrystalline amorphous OPT
  234. El84 Pp
  235. Preamp, Euridice?
  236. Has anyone built a PS like this?
  237. Tube sockets in Eagle?
  238. E235L tubes
  239. Grid Input Transformers
  240. Aikido Power Supply
  241. ralph power pp amp with 807 ?
  242. fender clone, 6SJ7 vs. 6SN7
  243. tube stores in moscow
  244. 211 and 845
  245. Need help with amp
  246. Altec 1570B
  247. UL to triode
  248. How can I improve this tube amp (see pics)?
  249. klimo merlin preamp sch wanted
  250. CCS question

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