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  1. Anyone interested in building an EAR 834P?
  2. tube pre-amp
  3. Choke For Supply B+ Diy
  4. Audio Note DAC4 SRPP output stage problems!
  5. Regulated Dc Question
  6. what about tubes?
  7. Please help choose amp layout.
  8. SE 813 OPT..Am I On the right Track?
  9. say it's a hum problem
  10. Affordable KT88
  11. With transformer or OTL ?
  12. 45 SE tube amp OPT
  13. 2 Bogen 7027 tube amp vintage amplifier mono block
  14. Newnewbie Ouput Tranny question
  15. Webcor Amplifier Speaker
  16. could 24A been power tube
  17. How's this for a first amp?
  18. U.K. transformer supplier
  19. stereo el34 + kt66?
  20. Very tempting Good invesment or not????????
  21. A Heretical Unity gain line stage
  22. NFB net gain or loss
  23. Different brands:Is there any difference?
  24. McIntosh 225 Schematic
  25. LM317 for power amp regulation?
  26. KT88 or 6550?
  27. How to choose 6c33b?
  28. Using rectifier tubes in parallell
  29. Small problem at power off
  30. Preamp rebuild - hum problem
  31. what should I do with this tranny???
  32. Will this 2A3 PSE work?
  33. Ec86
  34. Worth to buy - tubes?
  35. 10/10/ preamp
  36. what do you think of this preamp?
  37. Tube FM -- Armstrong's first bdcst commemorated
  38. rjm 6dj8 phono section
  39. mercury vapor rectifier tubes on e-bay
  40. Russian Tube Stuff -- WSJ
  41. Help Please!!!!!!
  42. 5902 amp schematics?
  43. Microphonics...........
  44. High voltage PSU
  45. 2A3 v 6550
  46. Coupling cap question
  47. Wollcott cross coupled circuit
  48. TAD Tubes where are they from?
  49. ebay Junk or Treasures?
  50. interconnects
  51. In few words
  52. GlassFET Design Ideas
  53. ecc88 tube pover supply-rect.
  54. A tubeNoob enters => I bought a Dynavox VR-70E
  55. Heater Supply using LM3X7 current source
  56. Stepdown input trafo
  57. increasing the bias will cause the amp to.....
  58. Transformer faulty?
  59. More crappy Russian EL34s - Svetlana this time
  60. My Tragic story about Emission Labs tube
  61. Please help me solve the problem
  62. amp freq response with o-scope
  63. Can you SEE (construction) how a tube SOUNDS?
  64. CCS fed shunt regulators
  65. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  66. ebay toys
  67. Source for 6c45pi's???
  68. phono preamp design for c3m postie valve
  69. McMartin MA-50 Troubleshooting
  70. looking for something different
  71. mc275
  72. Sv572-3 Se
  73. Alps step attenuator
  74. seeking real kt90 pp schematics
  75. -50V negative supply
  76. Inductance coupling between chokes
  77. Mercury Magnetics
  78. warming up thetubes
  79. distorsion
  80. using a plate choke?
  81. Should I trash these tubes
  82. Minature Vaccum Tube Question
  83. 46 tube user
  84. Smells like a mistake
  85. Help for my hybird zero feedback AMP
  86. help on ul transformer please
  87. Wiring the D3a as triode - What is best?
  88. Switching from ultralinear to triode
  89. Help for a Output Transfo problem
  90. Pentode models
  91. Good or bad to use parallel capacitors of same value in signal path...
  92. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  93. ASL wave 8 mods
  94. lectron jh 60 help----------------
  95. crown tube poweramp
  96. Alan kimmel mu stage article
  97. What would you do with this amp?
  98. tube software
  99. Simple Valve Preamplifier
  100. Current sourced heaters in a CF
  101. Tubes and music styles
  102. Cheap SE EL84
  103. Making a living out of tubes? (A little off-topic)
  104. EL84 matched pairs
  105. Tango XE20S voltage rating?
  106. power transformer heat
  107. Used Tube Amps, second life..
  108. Tubes
  109. Taylor 845
  110. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  111. The DIYHifiSupply.com Joplin amplifier Kit
  112. Berning P-1 Preamp
  113. Which tube for OPT 7,5k SE low watts???
  114. help me with this puzzle...
  115. Univox 1501 Fried Resistors
  116. It makes me wonder ...
  117. Tubes operating in horizontal position
  118. Dewald radio N-803b keep or use parts?
  119. Ongaku
  120. PSU Design question
  121. Primary reactance of a parafeed OPT
  122. Info on IIT interstage trafos?
  123. vt25/10-Y or 45 tube
  124. 2a3, single plate-double plate?
  125. Preferred tube? KT88 vs. EL34
  126. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  127. Parallelling power supply chokes???
  128. Sherwood S7000
  129. please explain plate curves
  130. Triode connected SV6550C with 500V HT
  131. KT88 SE schematic wanted.
  132. 6SN7 based tube buffer
  133. hum measurement
  134. Load of tubes to liquidate
  135. Unhappy with the Lilliput design
  136. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  137. Tube Technology Prophet
  138. Cathode Feedback from Secondary for PP Amp
  139. Zenith Amplifier
  140. Dynaco SCA-35 fixer-upper
  141. Multiple primary power transformer question
  142. Sizing a Regulator
  143. will laziness burn my amp down?!
  144. resistors of a lower power rating
  145. wavy vibrato-like sound when amp cranked
  146. Rh34se?
  147. Ef86, 6n1p & 845pp
  148. HYBRID POWER AMPLIFIER - please help!
  149. 6528 Se
  150. single ended HiFi Regal stereo tube amplifier
  151. Matisse Line Amp
  152. changing longtail
  153. What do you think??????
  154. The amplifier itself whines
  155. DIY repair- replacing capacitors
  156. Benefits of 845B
  157. Counterpoint Preamp Modifications
  158. Humming Sovtek EF86
  159. Output Transformers
  160. RIAA phono stage
  161. The cathode FeedBack in Push-Pull amp
  162. What's a Field Coil Amplifier?
  163. HF filter inductors for signal path
  164. Different tube options for DCMB driver stage?
  165. Crowhurst paper on output xformer search
  166. Tamura inputs trans used as linestage out
  167. Seperate Amp for center channel
  168. Look for UL41 PP Structure!!
  169. Photoelectric valves?
  170. Bell Carrillon tube amp 6V6
  171. Yamamoto Sound Craft A-08 Amplifier
  172. Wanted Radford MA-15
  173. Beyond SET and ParaFeed.... Complementary Current Triode
  174. Too much gain
  175. 2 To 3 Prong Conversion
  176. 6c33 Set
  177. Svetlana MVSZ ---> cheat??
  178. separation of phono power supply for marantz m7 clone
  179. 300b Circuit Mod.
  180. james transformers
  181. ecc preamp schematics please!!!
  182. 845B problem
  183. 150W Garage sale find.
  184. Power Tx core should ground?
  185. speakers for class A ?
  186. First try, Would some one look over.
  187. Global Feedback in Push Pull Amps
  188. Heater voltage circuit change......why please
  189. EICO 147A operators manual
  190. Please Help My Tube Microphones!
  191. Magnetic Circuit Gurus Needed
  192. Tube Blues
  193. end of tube
  194. What is meant by 'Extended Cut-off'?
  195. How is it possible?
  196. best long life for my tube
  197. My first tube amp design...check it out.
  198. Tube driver for a SS power amplifier
  199. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  200. www.thetubecenter.com = reliable?
  201. what do I replace...?
  202. Rectifiers: Tube vs Solid state..
  203. What can I do with 3Q4 Pentode tubes?
  204. DIY Powdered Core Progress Report
  205. PP output transformer grounded or not ?
  206. Bias supply question
  207. Minimum filament voltage for 300B
  208. Is it ok to combine output transformers?
  209. JE labs 2A3 evaluation
  210. 6sn7,6h30,6c33c ?
  211. signal ground and earth ground
  212. Recommended 6SN7 and 6SL7
  213. Question about BAT VK 75
  214. Please,a) cause of high pitched hum, b)DC wires twisted or not
  215. What kind of tube is this
  216. Tube Identification Help Please
  217. Balanced Load Design
  218. "lift off " or "Houston we have a problem"
  219. Anyone wound SE transformer for 6c33c-b?
  220. EL802 driving a 845 ?
  221. Diodes in series and hybrids
  222. Vacuum tube modeling software - beta testers wanted
  223. Parallel Push Pull Drivers
  224. 6V6 in triode connect mode
  225. OPT winding orientation
  226. 6.3v Heater Regulator Schematic
  227. An Important Read
  228. Did a real nice find
  229. New guy with DIY ground ?s--yes, even after searching:D
  230. 5u4g vs 5u4gb
  231. Tube amp volume fluctuation
  232. Bad tube?
  233. 1626's watt?
  234. fellow Hawkeye lookin' for cadman!
  235. Shuagang 2A3C
  236. Parallel SE vs. Single SE Output Question
  237. PP OPT Core dimension
  238. Confirmation of Primary Impedance?
  239. What does a hole on the guide pin of an octal base represent?
  240. Sepp?
  241. 6AS7 lowpower amp?
  242. Dual Mono PSU with shared earth..
  243. Breadboard 6C33C-B S.E.T
  244. audionote schematic wanted !!
  245. DIY Extreme performance Output Transformers - AMSOL
  246. Dressing up Ampex 2012 tube amps
  247. About McIntosh C22 power transformer
  248. it is almost alive
  249. Ef86, 6H30PI and 2 EL34
  250. 7868 tubes in Bogen CHB100

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