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  1. Tube surround sound
  2. Could you guys check this cascode article for me
  3. what would happen if...
  4. A Heretical Unity Gain Line Stage part III
  5. Which ECC83 tube and caps question
  6. Paralle Push Pull Simulclass
  7. organ amp question
  8. Stereo build- Mikael Abdellah's KT88 SE amp
  9. Audio Research AC21 cross over
  10. First DIY amp pics-as promised!
  11. emission-lab info
  12. Simple EL84 PP design needed
  13. 6C33 Circlotron
  14. Valves glow fierce
  15. Kirung's GM70 SE-Amps from Korea
  16. Digital Pots
  17. Troubleshooting First Tube Project
  18. Millett Low mu Preamp help
  19. thoughts about a 'universal' preamp
  20. Morgan Jones's Bevois Valley amp...
  21. Aikido line stage results? share yours
  22. Fender power transformer help
  23. HELP with breadboard layout!!!
  24. balanced line stage schematic needed
  25. Its Alive!! First Diy Amp Works!!
  26. Duncan Munro Psud primer please?
  27. Preamp volume control??
  28. Welborne 300b DRD plate current
  29. Active compensation...
  30. Calculating expected output power.
  31. Hybrid X line amp
  32. any way to fix a end cap on a 807 power tube
  33. power tube question
  34. MJ head-amp- how does it sound?
  35. Quick Aikido question
  36. What kind of amp?
  37. Problem with cathode resistor
  38. 2A3 DRD schematic wanted
  39. reduce before amplifying?
  40. 6AS7-G RCA application considerations
  41. Matisse Fantasy waveform output test
  42. El84/6bq5/ecc83 + Ef86 = Dc Pp
  43. Searching for simple circuit
  44. McIntosh MC60 Screens
  45. Improve this Pilot 240 (EL84/6BQ5)
  46. Eimac 35TG
  47. power supply issues
  48. Which Amperex ECC88 is the best?
  49. laney PA amp questions
  50. Grid battery bias on phono....
  51. EL34 identification
  52. UL vs SE
  53. 6sn7 operating points
  54. HELP! B+ voltage problem/burning power resistor
  55. are these tubes any good ?????
  56. Free Lunch/Monkey/DRD inspired 2A3
  57. E280F Triode mode operating point
  58. EL84 Guitar amp questions (long, sorry)
  59. 2nd Aikido PCB and PSU groupbuy
  60. Newbie question...
  61. Help in getting more gain out of 300B SE
  62. ECC808 what to do
  63. Microphonics When Hot, Raytheon CK5842
  64. MOSCODE hybrid DIY
  65. transformer question
  66. help, my amp humz
  67. Le tube preamp
  68. Ideal operating point of 6sj7
  69. Anyone tried the Hammond 1642SE in a BIG SE amp?
  70. MOSFET current source as triode load
  71. C-core transformers
  72. choke and choke
  73. High Voltage Power Supply Caps
  74. suggestions for 300B tubes
  75. Differential input stage
  76. rca conversion
  77. heating
  78. Russian 6N8S/1578
  79. DIY tube amp squeals when turned up
  80. ECL80-Amp from Andreas Kirschner
  81. HSS preamp, anyone care to comment
  82. help me design an input stage for 6b4G PP
  83. Instrument/Microphone Tube Pre-amp
  84. first-time tube DIY project...phono preamp
  85. A question regarding schematics
  86. My first creation
  87. Your opinion on this VCCS heater supply please.
  88. Looking for ORIGINAL GE 6L6GC
  89. Need help - O/T trannies for future project
  90. ECL82 (6BM8) PP Stereo
  91. first DIY amp start up-yowza HELP!
  92. Ronette Info
  93. GE 5687 (5 stars)
  94. vox ac4
  95. Help: Toroid choke for a preamp
  96. Who makes a 1962 Bassman head chassis?
  97. does meter degrade sound ?
  98. Eye Tube (1629) controller help
  99. Scott 99B & 99C Public Auction Find
  100. tube id book
  101. radio , tv station and radar stations still use the best single end class a amplifier
  102. Stupid question?
  103. looking for ideas on a small tube amp stand?
  104. Cascode gain stage info?????
  105. hi gain preamp
  106. Tube flashing
  107. Bogen tube amp with variable Damping Factor
  108. Question re Allen Wright PP-1cs
  109. What is a good Tube tester to get?
  110. High Gain Preamp
  111. SACThailand
  112. You know you're a tube junky when...
  113. 6AU6 to do EF86 duty?
  114. 6Н28Б-В datasheet?
  115. Is single ended Class A better than push-pull?
  116. Is 845 better than 211 tube amplifier?
  117. Cool Fireworks (tubes are tough!)
  118. Big Big hum ???
  119. 5687 filament heater question
  120. Anyone know agood MOSFET drive for RCA 811A Tube?
  121. Who is into musical instrument tube amplification?
  122. buffer stage ECC88 or ECC83?
  123. EL34 Integrated
  124. Solid state HT regulator??
  125. Tubes driving dipole mids
  126. How do I turn an high current signal into a line level signal??
  127. Peer review, UL question
  128. Grundig TK60 - Where is the Line Out ?
  129. 12AX7, EL34 or 6L6 design wanted
  130. RCA to Speakers?
  131. Morgan Jones - Valve books
  132. Any one tried to use subminiature for input tubes?
  133. Tube data for current manufacturers?
  134. Pentode to Triode Switch
  135. fried Heatkit IP-17 power supply
  136. Suggestions for Tube Amplifier
  137. SMPS for 300B heater ?
  138. What does this mean?
  139. heater/cathode query
  140. Bottlehead S.E.X Amp
  141. Old Meets New
  142. 6336-SE modification
  143. 6as7 pre-amp questions.
  144. Help in calculating NFB loop.
  145. ECL86 - quick and dirty
  146. Help! Q? about Ohm load in '59 Bassman RI
  147. preamp tubes change
  148. Parallel PP ECL86
  149. Anyone build a Minimal Reactance PSU?
  150. Transformer hook-up question to 115V AC line
  151. Langevin Schematic Archive
  152. PPP EL84 Amp
  153. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  154. Aikido: Width control
  155. Shielded Input Wire
  156. choke
  157. Multiple Inputs in One Shielded Cable?
  158. Presence control on a SE ?
  159. Question : pentode ccs schematic ?
  160. right capacitor value?
  161. Anybody knows this tube--WE 430C
  162. Transformer substitution help
  163. CFB Issues
  164. Please Suggest: Old Tube Usages
  165. Very powerful push/pull circuit
  166. Project choice for KT88
  167. Tamura F-475 in Parafeed?
  168. Kofi Annan in: "Push and Pull with Me"
  169. Schmitt dephaser
  170. Anyone using Chelmer Valves?
  171. SET w/ 300B Ultrapath + Parafeed Typologies
  172. a question about local feedback
  173. about input transformer
  174. Power transformer selection madness
  175. EF91 Line Stage questions
  176. Sourcing parts for Dynaco PAS rebuild
  177. HH Scott 223 monoblock schematics
  178. info needed on the 7c6 tube
  179. A final question on grounding(yeah right!)
  180. Schematics and Manuals Site Found
  181. Sprague/Cap Color Codes ?
  182. saba console radio working?
  183. Feedback and mu-followers
  184. Hundreds of 6AL5s
  185. Orange/Red Spot on The Anode of Sovtek 6L6GC
  186. Best way to isolate non-isolated RCAs?
  187. Power Resistor Smoking on HF-81
  188. Audio Innovations L-2
  189. first tube project
  190. And now a question about power switch...
  191. 2E24 ultralinear
  192. tube pin numbers
  193. Will This possibly work?
  194. What is the right current for a 300B at 400V and -80V grid bias?
  195. Simple Cap-Coupled CF Advise Needed
  196. tube amp layout reality check
  197. plitron
  198. How long does a 7199 last?
  199. Modding Tube Mixer Into DAW Front End
  200. CAE Cascode Diffamp Front End
  201. recommended resistor wattage
  202. 6.3V Rectifier Tube Lit by 5V
  203. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  204. WE121A, Please critique me
  205. Grommes / Western Electric G5M Tube Mixer Mods
  206. schemes needed
  207. PP to PPP
  208. aikido voltage swing
  209. voltage drop across a CCS...
  210. bogen db20 Schematic
  211. Mullards branded as Telefunkens???
  212. Pentodes; plate resistance; damping...
  213. PP amp has become SE?
  214. anyone mod a NYAL Moscode superIt?
  215. update to phillips sepp otl?
  216. DC filament supply LC or CL
  217. No Bass Control
  218. Unison Research Simply2 or s2schematics
  219. Border Patrol Power Supply
  220. Any leads on repairing a vintage Alamo Capri tube amp? >>
  221. nanocrystalline amorphous OPT
  222. El84 Pp
  223. Preamp, Euridice?
  224. Has anyone built a PS like this?
  225. Tube sockets in Eagle?
  226. E235L tubes
  227. Grid Input Transformers
  228. Aikido Power Supply
  229. ralph power pp amp with 807 ?
  230. fender clone, 6SJ7 vs. 6SN7
  231. tube stores in moscow
  232. 211 and 845
  233. Need help with amp
  234. Altec 1570B
  235. UL to triode
  236. How can I improve this tube amp (see pics)?
  237. klimo merlin preamp sch wanted
  238. CCS question
  239. *****es brew step 2 ... or grid bias ... how to?
  240. Filaments for the Aikido
  241. RE: RC-19 or RC-30
  242. My experience building a DRD d3A/300B amp
  243. TIP50 + LM317 High Voltage Regulator
  244. Any info on old "Cosmos" amp'?
  245. What more do I need to know?
  246. EBAY Find Of The Year Club LOL
  247. Partial feedback DHP SE amp
  248. newbie question
  249. Tube 1616
  250. Class A tube integrated circuit request

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