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  1. How to choose 6c33b?
  2. Using rectifier tubes in parallell
  3. Small problem at power off
  4. Preamp rebuild - hum problem
  5. what should I do with this tranny???
  6. Will this 2A3 PSE work?
  7. Ec86
  8. Worth to buy - tubes?
  9. 10/10/ preamp
  10. what do you think of this preamp?
  11. Tube FM -- Armstrong's first bdcst commemorated
  12. rjm 6dj8 phono section
  13. mercury vapor rectifier tubes on e-bay
  14. Russian Tube Stuff -- WSJ
  15. Help Please!!!!!!
  16. 5902 amp schematics?
  17. Microphonics...........
  18. High voltage PSU
  19. 2A3 v 6550
  20. Coupling cap question
  21. Wollcott cross coupled circuit
  22. TAD Tubes where are they from?
  23. ebay Junk or Treasures?
  24. interconnects
  25. In few words
  26. GlassFET Design Ideas
  27. ecc88 tube pover supply-rect.
  28. A tubeNoob enters => I bought a Dynavox VR-70E
  29. Heater Supply using LM3X7 current source
  30. Stepdown input trafo
  31. increasing the bias will cause the amp to.....
  32. Transformer faulty?
  33. More crappy Russian EL34s - Svetlana this time
  34. My Tragic story about Emission Labs tube
  35. Please help me solve the problem
  36. amp freq response with o-scope
  37. Can you SEE (construction) how a tube SOUNDS?
  38. CCS fed shunt regulators
  39. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  40. ebay toys
  41. Source for 6c45pi's???
  42. phono preamp design for c3m postie valve
  43. McMartin MA-50 Troubleshooting
  44. looking for something different
  45. mc275
  46. Sv572-3 Se
  47. Alps step attenuator
  48. seeking real kt90 pp schematics
  49. -50V negative supply
  50. Inductance coupling between chokes
  51. Mercury Magnetics
  52. warming up thetubes
  53. distorsion
  54. using a plate choke?
  55. Should I trash these tubes
  56. Minature Vaccum Tube Question
  57. 46 tube user
  58. Smells like a mistake
  59. Help for my hybird zero feedback AMP
  60. help on ul transformer please
  61. Wiring the D3a as triode - What is best?
  62. Switching from ultralinear to triode
  63. Help for a Output Transfo problem
  64. Pentode models
  65. Good or bad to use parallel capacitors of same value in signal path...
  66. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  67. ASL wave 8 mods
  68. lectron jh 60 help----------------
  69. crown tube poweramp
  70. Alan kimmel mu stage article
  71. What would you do with this amp?
  72. tube software
  73. Simple Valve Preamplifier
  74. Current sourced heaters in a CF
  75. Tubes and music styles
  76. Cheap SE EL84
  77. Making a living out of tubes? (A little off-topic)
  78. EL84 matched pairs
  79. Tango XE20S voltage rating?
  80. power transformer heat
  81. Used Tube Amps, second life..
  82. Tubes
  83. Taylor 845
  84. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  85. The DIYHifiSupply.com Joplin amplifier Kit
  86. Berning P-1 Preamp
  87. Which tube for OPT 7,5k SE low watts???
  88. help me with this puzzle...
  89. It makes me wonder ...
  90. Tubes operating in horizontal position
  91. Dewald radio N-803b keep or use parts?
  92. Ongaku
  93. PSU Design question
  94. Primary reactance of a parafeed OPT
  95. Info on IIT interstage trafos?
  96. vt25/10-Y or 45 tube
  97. 2a3, single plate-double plate?
  98. Preferred tube? KT88 vs. EL34
  99. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  100. Parallelling power supply chokes???
  101. Sherwood S7000
  102. please explain plate curves
  103. Triode connected SV6550C with 500V HT
  104. KT88 SE schematic wanted.
  105. 6SN7 based tube buffer
  106. hum measurement
  107. Load of tubes to liquidate
  108. Unhappy with the Lilliput design
  109. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  110. Tube Technology Prophet
  111. Cathode Feedback from Secondary for PP Amp
  112. Zenith Amplifier
  113. Dynaco SCA-35 fixer-upper
  114. Multiple primary power transformer question
  115. Sizing a Regulator
  116. will laziness burn my amp down?!
  117. resistors of a lower power rating
  118. wavy vibrato-like sound when amp cranked
  119. Rh34se?
  120. Ef86, 6n1p & 845pp
  121. HYBRID POWER AMPLIFIER - please help!
  122. 6528 Se
  123. single ended HiFi Regal stereo tube amplifier
  124. Matisse Line Amp
  125. changing longtail
  126. What do you think??????
  127. The amplifier itself whines
  128. DIY repair- replacing capacitors
  129. Benefits of 845B
  130. Counterpoint Preamp Modifications
  131. Humming Sovtek EF86
  132. Output Transformers
  133. RIAA phono stage
  134. The cathode FeedBack in Push-Pull amp
  135. What's a Field Coil Amplifier?
  136. HF filter inductors for signal path
  137. Different tube options for DCMB driver stage?
  138. Crowhurst paper on output xformer search
  139. Tamura inputs trans used as linestage out
  140. Seperate Amp for center channel
  141. Look for UL41 PP Structure!!
  142. Photoelectric valves?
  143. Bell Carrillon tube amp 6V6
  144. Yamamoto Sound Craft A-08 Amplifier
  145. Wanted Radford MA-15
  146. Beyond SET and ParaFeed.... Complementary Current Triode
  147. Too much gain
  148. 2 To 3 Prong Conversion
  149. 6c33 Set
  150. Svetlana MVSZ ---> cheat??
  151. separation of phono power supply for marantz m7 clone
  152. 300b Circuit Mod.
  153. james transformers
  154. ecc preamp schematics please!!!
  155. 845B problem
  156. 150W Garage sale find.
  157. Power Tx core should ground?
  158. speakers for class A ?
  159. First try, Would some one look over.
  160. Global Feedback in Push Pull Amps
  161. Heater voltage circuit change......why please
  162. EICO 147A operators manual
  163. Please Help My Tube Microphones!
  164. Magnetic Circuit Gurus Needed
  165. Tube Blues
  166. end of tube
  167. What is meant by 'Extended Cut-off'?
  168. How is it possible?
  169. best long life for my tube
  170. My first tube amp design...check it out.
  171. Tube driver for a SS power amplifier
  172. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  173. www.thetubecenter.com = reliable?
  174. what do I replace...?
  175. Rectifiers: Tube vs Solid state..
  176. What can I do with 3Q4 Pentode tubes?
  177. DIY Powdered Core Progress Report
  178. PP output transformer grounded or not ?
  179. Bias supply question
  180. Minimum filament voltage for 300B
  181. Is it ok to combine output transformers?
  182. JE labs 2A3 evaluation
  183. 6sn7,6h30,6c33c ?
  184. signal ground and earth ground
  185. Recommended 6SN7 and 6SL7
  186. Question about BAT VK 75
  187. Please,a) cause of high pitched hum, b)DC wires twisted or not
  188. What kind of tube is this
  189. Tube Identification Help Please
  190. Balanced Load Design
  191. "lift off " or "Houston we have a problem"
  192. Anyone wound SE transformer for 6c33c-b?
  193. EL802 driving a 845 ?
  194. Diodes in series and hybrids
  195. Vacuum tube modeling software - beta testers wanted
  196. Parallel Push Pull Drivers
  197. 6V6 in triode connect mode
  198. OPT winding orientation
  199. 6.3v Heater Regulator Schematic
  200. An Important Read
  201. Did a real nice find
  202. New guy with DIY ground ?s--yes, even after searching:D
  203. 5u4g vs 5u4gb
  204. Tube amp volume fluctuation
  205. Bad tube?
  206. 1626's watt?
  207. fellow Hawkeye lookin' for cadman!
  208. Shuagang 2A3C
  209. Parallel SE vs. Single SE Output Question
  210. PP OPT Core dimension
  211. Confirmation of Primary Impedance?
  212. What does a hole on the guide pin of an octal base represent?
  213. Sepp?
  214. 6AS7 lowpower amp?
  215. Dual Mono PSU with shared earth..
  216. Breadboard 6C33C-B S.E.T
  217. audionote schematic wanted !!
  218. DIY Extreme performance Output Transformers - AMSOL
  219. Dressing up Ampex 2012 tube amps
  220. About McIntosh C22 power transformer
  221. it is almost alive
  222. Ef86, 6H30PI and 2 EL34
  223. 7868 tubes in Bogen CHB100
  224. DIY Powdered Iron Tranny Core
  225. Which BG cap best suited for cathode bypass?
  226. Oscillation question- pre or power?
  227. changing (de)coupling cap values
  228. opamp driving tubes
  229. tube 833a
  230. My latest Project (nightmare)
  231. output transformer primary imp. calculation
  232. rogers cadet mk3 hummm.....
  233. Someone help: SE shematic with GK71?
  234. Calling Graham Ingle of black cat electronics
  235. Old Emerson Tube Radio... great find!
  236. E810F in triode
  237. GZ37 replacement?
  238. Bias adjustment question
  239. 6W Self Inverting 6BQ5 Amp
  240. Inductance a problem with wirewound pots?
  241. Fun circuit with a 12ax7 (ecc83)
  242. want to do PP-GM70
  243. spraying the guts of my amp...
  244. How to drop 10v from mains for 300b amp.
  245. SE Output Primary Impedence
  246. Different input valves for KT88
  247. EL84/6BQ5 LUXMAN Amps
  248. Heresy? Replacing tube rectifier w/Weber Copper Cap
  249. Direct Coupled Choke-assisted Mu-stage
  250. Another 845 SE

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