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  1. organ amp question
  2. Stereo build- Mikael Abdellah's KT88 SE amp
  3. Audio Research AC21 cross over
  4. First DIY amp pics-as promised!
  5. emission-lab info
  6. Simple EL84 PP design needed
  7. 6C33 Circlotron
  8. Valves glow fierce
  9. Kirung's GM70 SE-Amps from Korea
  10. Digital Pots
  11. Troubleshooting First Tube Project
  12. Millett Low mu Preamp help
  13. thoughts about a 'universal' preamp
  14. Morgan Jones's Bevois Valley amp...
  15. Aikido line stage results? share yours
  16. Fender power transformer help
  17. HELP with breadboard layout!!!
  18. balanced line stage schematic needed
  19. Its Alive!! First Diy Amp Works!!
  20. Duncan Munro Psud primer please?
  21. Preamp volume control??
  22. Welborne 300b DRD plate current
  23. Active compensation...
  24. Calculating expected output power.
  25. Hybrid X line amp
  26. any way to fix a end cap on a 807 power tube
  27. power tube question
  28. MJ head-amp- how does it sound?
  29. Quick Aikido question
  30. What kind of amp?
  31. Problem with cathode resistor
  32. 2A3 DRD schematic wanted
  33. reduce before amplifying?
  34. 6AS7-G RCA application considerations
  35. Matisse Fantasy waveform output test
  36. El84/6bq5/ecc83 + Ef86 = Dc Pp
  37. Searching for simple circuit
  38. McIntosh MC60 Screens
  39. Improve this Pilot 240 (EL84/6BQ5)
  40. Eimac 35TG
  41. power supply issues
  42. Which Amperex ECC88 is the best?
  43. laney PA amp questions
  44. Grid battery bias on phono....
  45. EL34 identification
  46. UL vs SE
  47. 6sn7 operating points
  48. HELP! B+ voltage problem/burning power resistor
  49. are these tubes any good ?????
  50. Free Lunch/Monkey/DRD inspired 2A3
  51. E280F Triode mode operating point
  52. EL84 Guitar amp questions (long, sorry)
  53. 2nd Aikido PCB and PSU groupbuy
  54. Newbie question...
  55. Help in getting more gain out of 300B SE
  56. ECC808 what to do
  57. Microphonics When Hot, Raytheon CK5842
  58. MOSCODE hybrid DIY
  59. transformer question
  60. help, my amp humz
  61. Le tube preamp
  62. Ideal operating point of 6sj7
  63. Convert a non-valve amp to a Valve (tube) Amp
  64. Anyone tried the Hammond 1642SE in a BIG SE amp?
  65. MOSFET current source as triode load
  66. C-core transformers
  67. choke and choke
  68. High Voltage Power Supply Caps
  69. suggestions for 300B tubes
  70. Differential input stage
  71. rca conversion
  72. heating
  73. Russian 6N8S/1578
  74. DIY tube amp squeals when turned up
  75. ECL80-Amp from Andreas Kirschner
  76. HSS preamp, anyone care to comment
  77. help me design an input stage for 6b4G PP
  78. Instrument/Microphone Tube Pre-amp
  79. first-time tube DIY project...phono preamp
  80. A question regarding schematics
  81. My first creation
  82. Your opinion on this VCCS heater supply please.
  83. Looking for ORIGINAL GE 6L6GC
  84. Need help - O/T trannies for future project
  85. ECL82 (6BM8) PP Stereo
  86. first DIY amp start up-yowza HELP!
  87. Ronette Info
  88. GE 5687 (5 stars)
  89. vox ac4
  90. Help: Toroid choke for a preamp
  91. Who makes a 1962 Bassman head chassis?
  92. does meter degrade sound ?
  93. Eye Tube (1629) controller help
  94. Scott 99B & 99C Public Auction Find
  95. tube id book
  96. radio , tv station and radar stations still use the best single end class a amplifier
  97. Stupid question?
  98. looking for ideas on a small tube amp stand?
  99. Cascode gain stage info?????
  100. hi gain preamp
  101. Tube flashing
  102. Bogen tube amp with variable Damping Factor
  103. Question re Allen Wright PP-1cs
  104. What is a good Tube tester to get?
  105. High Gain Preamp
  106. SACThailand
  107. You know you're a tube junky when...
  108. 6AU6 to do EF86 duty?
  109. 6Н28Б-В datasheet?
  110. Is single ended Class A better than push-pull?
  111. Is 845 better than 211 tube amplifier?
  112. Cool Fireworks (tubes are tough!)
  113. Big Big hum ???
  114. 5687 filament heater question
  115. Anyone know agood MOSFET drive for RCA 811A Tube?
  116. Who is into musical instrument tube amplification?
  117. buffer stage ECC88 or ECC83?
  118. EL34 Integrated
  119. Solid state HT regulator??
  120. Tubes driving dipole mids
  121. How do I turn an high current signal into a line level signal??
  122. Peer review, UL question
  123. Grundig TK60 - Where is the Line Out ?
  124. 12AX7, EL34 or 6L6 design wanted
  125. RCA to Speakers?
  126. Morgan Jones - Valve books
  127. Any one tried to use subminiature for input tubes?
  128. Tube data for current manufacturers?
  129. Pentode to Triode Switch
  130. fried Heatkit IP-17 power supply
  131. Suggestions for Tube Amplifier
  132. SMPS for 300B heater ?
  133. What does this mean?
  134. heater/cathode query
  135. Bottlehead S.E.X Amp
  136. Old Meets New
  137. 6336-SE modification
  138. 6as7 pre-amp questions.
  139. Help in calculating NFB loop.
  140. ECL86 - quick and dirty
  141. Help! Q? about Ohm load in '59 Bassman RI
  142. preamp tubes change
  143. Parallel PP ECL86
  144. Anyone build a Minimal Reactance PSU?
  145. Transformer hook-up question to 115V AC line
  146. Langevin Schematic Archive
  147. PPP EL84 Amp
  148. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  149. Aikido: Width control
  150. Shielded Input Wire
  151. choke
  152. Multiple Inputs in One Shielded Cable?
  153. Presence control on a SE ?
  154. Question : pentode ccs schematic ?
  155. right capacitor value?
  156. Anybody knows this tube--WE 430C
  157. Transformer substitution help
  158. CFB Issues
  159. Please Suggest: Old Tube Usages
  160. Very powerful push/pull circuit
  161. Project choice for KT88
  162. Tamura F-475 in Parafeed?
  163. Kofi Annan in: "Push and Pull with Me"
  164. Schmitt dephaser
  165. Anyone using Chelmer Valves?
  166. SET w/ 300B Ultrapath + Parafeed Typologies
  167. a question about local feedback
  168. about input transformer
  169. Power transformer selection madness
  170. EF91 Line Stage questions
  171. Sourcing parts for Dynaco PAS rebuild
  172. HH Scott 223 monoblock schematics
  173. info needed on the 7c6 tube
  174. A final question on grounding(yeah right!)
  175. Schematics and Manuals Site Found
  176. Sprague/Cap Color Codes ?
  177. saba console radio working?
  178. Feedback and mu-followers
  179. Hundreds of 6AL5s
  180. Orange/Red Spot on The Anode of Sovtek 6L6GC
  181. Best way to isolate non-isolated RCAs?
  182. Power Resistor Smoking on HF-81
  183. Audio Innovations L-2
  184. first tube project
  185. And now a question about power switch...
  186. 2E24 ultralinear
  187. tube pin numbers
  188. Will This possibly work?
  189. What is the right current for a 300B at 400V and -80V grid bias?
  190. Simple Cap-Coupled CF Advise Needed
  191. tube amp layout reality check
  192. plitron
  193. How long does a 7199 last?
  194. Modding Tube Mixer Into DAW Front End
  195. CAE Cascode Diffamp Front End
  196. recommended resistor wattage
  197. 6.3V Rectifier Tube Lit by 5V
  198. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  199. WE121A, Please critique me
  200. Grommes / Western Electric G5M Tube Mixer Mods
  201. schemes needed
  202. PP to PPP
  203. aikido voltage swing
  204. voltage drop across a CCS...
  205. bogen db20 Schematic
  206. Mullards branded as Telefunkens???
  207. Pentodes; plate resistance; damping...
  208. PP amp has become SE?
  209. anyone mod a NYAL Moscode superIt?
  210. update to phillips sepp otl?
  211. DC filament supply LC or CL
  212. No Bass Control
  213. Unison Research Simply2 or s2schematics
  214. Border Patrol Power Supply
  215. Any leads on repairing a vintage Alamo Capri tube amp? >>
  216. nanocrystalline amorphous OPT
  217. El84 Pp
  218. Preamp, Euridice?
  219. Has anyone built a PS like this?
  220. Tube sockets in Eagle?
  221. E235L tubes
  222. Grid Input Transformers
  223. Aikido Power Supply
  224. ralph power pp amp with 807 ?
  225. fender clone, 6SJ7 vs. 6SN7
  226. tube stores in moscow
  227. 211 and 845
  228. Need help with amp
  229. Altec 1570B
  230. UL to triode
  231. How can I improve this tube amp (see pics)?
  232. klimo merlin preamp sch wanted
  233. CCS question
  234. *****es brew step 2 ... or grid bias ... how to?
  235. Filaments for the Aikido
  236. RE: RC-19 or RC-30
  237. My experience building a DRD d3A/300B amp
  238. TIP50 + LM317 High Voltage Regulator
  239. Any info on old "Cosmos" amp'?
  240. What more do I need to know?
  241. EBAY Find Of The Year Club LOL
  242. Partial feedback DHP SE amp
  243. newbie question
  244. Tube 1616
  245. Class A tube integrated circuit request
  246. Global Feedback Source Point
  247. These look interesting for that SE project
  248. Phillips AG9008 amp - looking for diagram
  249. 3cx3000
  250. EL86 and speakers? 800 Ohm

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