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  1. could 24A been power tube
  2. How's this for a first amp?
  3. U.K. transformer supplier
  4. stereo el34 + kt66?
  5. Very tempting Good invesment or not????????
  6. A Heretical Unity gain line stage
  7. NFB net gain or loss
  8. Different brands:Is there any difference?
  9. McIntosh 225 Schematic
  10. LM317 for power amp regulation?
  11. KT88 or 6550?
  12. How to choose 6c33b?
  13. Using rectifier tubes in parallell
  14. Small problem at power off
  15. Preamp rebuild - hum problem
  16. what should I do with this tranny???
  17. Will this 2A3 PSE work?
  18. Ec86
  19. Worth to buy - tubes?
  20. 10/10/ preamp
  21. what do you think of this preamp?
  22. Tube FM -- Armstrong's first bdcst commemorated
  23. rjm 6dj8 phono section
  24. mercury vapor rectifier tubes on e-bay
  25. Russian Tube Stuff -- WSJ
  26. Help Please!!!!!!
  27. 5902 amp schematics?
  28. Microphonics...........
  29. High voltage PSU
  30. 2A3 v 6550
  31. Coupling cap question
  32. Wollcott cross coupled circuit
  33. TAD Tubes where are they from?
  34. ebay Junk or Treasures?
  35. interconnects
  36. In few words
  37. GlassFET Design Ideas
  38. ecc88 tube pover supply-rect.
  39. A tubeNoob enters => I bought a Dynavox VR-70E
  40. plugging guitar amp to phono reciever
  41. Heater Supply using LM3X7 current source
  42. Stepdown input trafo
  43. increasing the bias will cause the amp to.....
  44. Transformer faulty?
  45. More crappy Russian EL34s - Svetlana this time
  46. My Tragic story about Emission Labs tube
  47. Please help me solve the problem
  48. amp freq response with o-scope
  49. Can you SEE (construction) how a tube SOUNDS?
  50. CCS fed shunt regulators
  51. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  52. ebay toys
  53. Source for 6c45pi's???
  54. phono preamp design for c3m postie valve
  55. McMartin MA-50 Troubleshooting
  56. looking for something different
  57. mc275
  58. Sv572-3 Se
  59. Alps step attenuator
  60. seeking real kt90 pp schematics
  61. -50V negative supply
  62. Inductance coupling between chokes
  63. Mercury Magnetics
  64. warming up thetubes
  65. distorsion
  66. using a plate choke?
  67. Should I trash these tubes
  68. Minature Vaccum Tube Question
  69. 46 tube user
  70. Smells like a mistake
  71. Help for my hybird zero feedback AMP
  72. help on ul transformer please
  73. Wiring the D3a as triode - What is best?
  74. Switching from ultralinear to triode
  75. Help for a Output Transfo problem
  76. Pentode models
  77. Good or bad to use parallel capacitors of same value in signal path...
  78. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  79. ASL wave 8 mods
  80. lectron jh 60 help----------------
  81. crown tube poweramp
  82. Alan kimmel mu stage article
  83. What would you do with this amp?
  84. tube software
  85. Simple Valve Preamplifier
  86. Current sourced heaters in a CF
  87. Tubes and music styles
  88. Cheap SE EL84
  89. Making a living out of tubes? (A little off-topic)
  90. EL84 matched pairs
  91. Tango XE20S voltage rating?
  92. power transformer heat
  93. Used Tube Amps, second life..
  94. Tubes
  95. Taylor 845
  96. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  97. The DIYHifiSupply.com Joplin amplifier Kit
  98. Berning P-1 Preamp
  99. Which tube for OPT 7,5k SE low watts???
  100. help me with this puzzle...
  101. Univox 1501 Fried Resistors
  102. It makes me wonder ...
  103. Tubes operating in horizontal position
  104. Dewald radio N-803b keep or use parts?
  105. Ongaku
  106. PSU Design question
  107. Primary reactance of a parafeed OPT
  108. Info on IIT interstage trafos?
  109. vt25/10-Y or 45 tube
  110. 2a3, single plate-double plate?
  111. Preferred tube? KT88 vs. EL34
  112. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  113. Parallelling power supply chokes???
  114. Sherwood S7000
  115. please explain plate curves
  116. Triode connected SV6550C with 500V HT
  117. KT88 SE schematic wanted.
  118. 6SN7 based tube buffer
  119. hum measurement
  120. Load of tubes to liquidate
  121. Unhappy with the Lilliput design
  122. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  123. Tube Technology Prophet
  124. Cathode Feedback from Secondary for PP Amp
  125. Zenith Amplifier
  126. Dynaco SCA-35 fixer-upper
  127. Multiple primary power transformer question
  128. Sizing a Regulator
  129. will laziness burn my amp down?!
  130. resistors of a lower power rating
  131. wavy vibrato-like sound when amp cranked
  132. Rh34se?
  133. Ef86, 6n1p & 845pp
  134. HYBRID POWER AMPLIFIER - please help!
  135. 6528 Se
  136. single ended HiFi Regal stereo tube amplifier
  137. Matisse Line Amp
  138. changing longtail
  139. What do you think??????
  140. The amplifier itself whines
  141. DIY repair- replacing capacitors
  142. Benefits of 845B
  143. Counterpoint Preamp Modifications
  144. Humming Sovtek EF86
  145. Output Transformers
  146. RIAA phono stage
  147. The cathode FeedBack in Push-Pull amp
  148. What's a Field Coil Amplifier?
  149. Need help for ampeg tube amp transformers ...
  150. HF filter inductors for signal path
  151. Different tube options for DCMB driver stage?
  152. Crowhurst paper on output xformer search
  153. Tamura inputs trans used as linestage out
  154. Seperate Amp for center channel
  155. Look for UL41 PP Structure!!
  156. Photoelectric valves?
  157. Bell Carrillon tube amp 6V6
  158. Yamamoto Sound Craft A-08 Amplifier
  159. Wanted Radford MA-15
  160. Beyond SET and ParaFeed.... Complementary Current Triode
  161. Too much gain
  162. 2 To 3 Prong Conversion
  163. 6c33 Set
  164. Svetlana MVSZ ---> cheat??
  165. separation of phono power supply for marantz m7 clone
  166. 300b Circuit Mod.
  167. james transformers
  168. ecc preamp schematics please!!!
  169. 845B problem
  170. 150W Garage sale find.
  171. speakers for class A ?
  172. Power Tx core should ground?
  173. First try, Would some one look over.
  174. Global Feedback in Push Pull Amps
  175. Heater voltage circuit change......why please
  176. EICO 147A operators manual
  177. Please Help My Tube Microphones!
  178. Magnetic Circuit Gurus Needed
  179. Tube Blues
  180. end of tube
  181. What is meant by 'Extended Cut-off'?
  182. How is it possible?
  183. best long life for my tube
  184. My first tube amp design...check it out.
  185. Tube driver for a SS power amplifier
  186. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  187. www.thetubecenter.com = reliable?
  188. Lp values for guitar amp OT
  189. what do I replace...?
  190. Rectifiers: Tube vs Solid state..
  191. What can I do with 3Q4 Pentode tubes?
  192. DIY Powdered Core Progress Report
  193. PP output transformer grounded or not ?
  194. Bias supply question
  195. Minimum filament voltage for 300B
  196. Is it ok to combine output transformers?
  197. JE labs 2A3 evaluation
  198. 6sn7,6h30,6c33c ?
  199. signal ground and earth ground
  200. Recommended 6SN7 and 6SL7
  201. Question about BAT VK 75
  202. Please,a) cause of high pitched hum, b)DC wires twisted or not
  203. What kind of tube is this
  204. Tube Identification Help Please
  205. Balanced Load Design
  206. "lift off " or "Houston we have a problem"
  207. Anyone wound SE transformer for 6c33c-b?
  208. EL802 driving a 845 ?
  209. Diodes in series and hybrids
  210. Vacuum tube modeling software - beta testers wanted
  211. Parallel Push Pull Drivers
  212. 6V6 in triode connect mode
  213. OPT winding orientation
  214. 6.3v Heater Regulator Schematic
  215. An Important Read
  216. Did a real nice find
  217. New guy with DIY ground ?s--yes, even after searching:D
  218. 5u4g vs 5u4gb
  219. Tube amp volume fluctuation
  220. Bad tube?
  221. 1626's watt?
  222. fellow Hawkeye lookin' for cadman!
  223. Shuagang 2A3C
  224. Parallel SE vs. Single SE Output Question
  225. PP OPT Core dimension
  226. Confirmation of Primary Impedance?
  227. What does a hole on the guide pin of an octal base represent?
  228. Sepp?
  229. 6AS7 lowpower amp?
  230. Dual Mono PSU with shared earth..
  231. Breadboard 6C33C-B S.E.T
  232. audionote schematic wanted !!
  233. DIY Extreme performance Output Transformers - AMSOL
  234. Dressing up Ampex 2012 tube amps
  235. About McIntosh C22 power transformer
  236. it is almost alive
  237. Ef86, 6H30PI and 2 EL34
  238. 7868 tubes in Bogen CHB100
  239. DIY Powdered Iron Tranny Core
  240. Which BG cap best suited for cathode bypass?
  241. Oscillation question- pre or power?
  242. changing (de)coupling cap values
  243. opamp driving tubes
  244. tube 833a
  245. My latest Project (nightmare)
  246. output transformer primary imp. calculation
  247. rogers cadet mk3 hummm.....
  248. Someone help: SE shematic with GK71?
  249. Calling Graham Ingle of black cat electronics
  250. Old Emerson Tube Radio... great find!

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