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  1. Very high output level!
  2. Help wanted with valve data
  3. Boiling sound...
  4. Negative Feedback Ground
  5. low power SE with 813
  6. KT instead EL
  7. a single double triode and two chanel?
  8. 76 driving 211?
  9. My Experience with "Music Angel" EL34 PP
  10. 12JT6 in triode mode curves needed
  11. Where did these EL84 numbers come from?
  12. int. low signal
  13. FFT analysis-Truth or Consequence
  14. 6sn7gtb Filament Voltage
  15. Help with Tube Buffer for passive pre
  16. Is there a 12CM7?
  17. 12ax7
  18. tube driving the same tube - whats the collective word?
  19. 6c33c PSE
  20. 75% of rated max. current too high?
  21. ST shaped tube
  22. Tube Phono Pre of RJM
  23. how to determine P1 from P2 of a Push-pull transformer?
  24. fisher x100a
  25. Please review EL84M PP design before I order parts.
  26. Auction Gem Motorola? Go Figure!
  27. Darling amp plate voltage
  28. Sound quality of 6C4C is same with 2A3?
  29. 6,3VAC to 6,3VDC
  30. EL84 push pull idea
  31. Marantz preamp clone for newbie?
  32. Can I use Philips TB2.5 /400 in a SE ampl.
  33. Microwave + Computer = Tube? [help!]
  34. Oil Capacitor DC vs. AC Voltage Rating
  35. Plate Choke Miller Capacitance
  36. Anyone interested in building an EAR 834P?
  37. tube pre-amp
  38. Choke For Supply B+ Diy
  39. Audio Note DAC4 SRPP output stage problems!
  40. Regulated Dc Question
  41. what about tubes?
  42. Please help choose amp layout.
  43. SE 813 OPT..Am I On the right Track?
  44. say it's a hum problem
  45. Affordable KT88
  46. With transformer or OTL ?
  47. 45 SE tube amp OPT
  48. 2 Bogen 7027 tube amp vintage amplifier mono block
  49. Newnewbie Ouput Tranny question
  50. Webcor Amplifier Speaker
  51. could 24A been power tube
  52. How's this for a first amp?
  53. U.K. transformer supplier
  54. stereo el34 + kt66?
  55. Very tempting Good invesment or not????????
  56. A Heretical Unity gain line stage
  57. NFB net gain or loss
  58. Different brands:Is there any difference?
  59. McIntosh 225 Schematic
  60. LM317 for power amp regulation?
  61. KT88 or 6550?
  62. How to choose 6c33b?
  63. Using rectifier tubes in parallell
  64. Small problem at power off
  65. Preamp rebuild - hum problem
  66. what should I do with this tranny???
  67. Will this 2A3 PSE work?
  68. Ec86
  69. Worth to buy - tubes?
  70. 10/10/ preamp
  71. what do you think of this preamp?
  72. Tube FM -- Armstrong's first bdcst commemorated
  73. rjm 6dj8 phono section
  74. mercury vapor rectifier tubes on e-bay
  75. Russian Tube Stuff -- WSJ
  76. Help Please!!!!!!
  77. 5902 amp schematics?
  78. Microphonics...........
  79. High voltage PSU
  80. 2A3 v 6550
  81. Coupling cap question
  82. Wollcott cross coupled circuit
  83. TAD Tubes where are they from?
  84. ebay Junk or Treasures?
  85. interconnects
  86. In few words
  87. GlassFET Design Ideas
  88. ecc88 tube pover supply-rect.
  89. A tubeNoob enters => I bought a Dynavox VR-70E
  90. plugging guitar amp to phono reciever
  91. Heater Supply using LM3X7 current source
  92. Stepdown input trafo
  93. increasing the bias will cause the amp to.....
  94. Transformer faulty?
  95. More crappy Russian EL34s - Svetlana this time
  96. My Tragic story about Emission Labs tube
  97. Please help me solve the problem
  98. amp freq response with o-scope
  99. Can you SEE (construction) how a tube SOUNDS?
  100. CCS fed shunt regulators
  101. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  102. ebay toys
  103. Source for 6c45pi's???
  104. phono preamp design for c3m postie valve
  105. McMartin MA-50 Troubleshooting
  106. looking for something different
  107. mc275
  108. Sv572-3 Se
  109. Alps step attenuator
  110. seeking real kt90 pp schematics
  111. -50V negative supply
  112. Inductance coupling between chokes
  113. Mercury Magnetics
  114. warming up thetubes
  115. distorsion
  116. using a plate choke?
  117. Should I trash these tubes
  118. Minature Vaccum Tube Question
  119. 46 tube user
  120. Smells like a mistake
  121. Help for my hybird zero feedback AMP
  122. help on ul transformer please
  123. Wiring the D3a as triode - What is best?
  124. Switching from ultralinear to triode
  125. Help for a Output Transfo problem
  126. Pentode models
  127. Good or bad to use parallel capacitors of same value in signal path...
  128. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  129. ASL wave 8 mods
  130. lectron jh 60 help----------------
  131. crown tube poweramp
  132. Alan kimmel mu stage article
  133. What would you do with this amp?
  134. tube software
  135. Simple Valve Preamplifier
  136. Current sourced heaters in a CF
  137. Tubes and music styles
  138. Cheap SE EL84
  139. Making a living out of tubes? (A little off-topic)
  140. EL84 matched pairs
  141. Tango XE20S voltage rating?
  142. power transformer heat
  143. Used Tube Amps, second life..
  144. Tubes
  145. Taylor 845
  146. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  147. The DIYHifiSupply.com Joplin amplifier Kit
  148. Berning P-1 Preamp
  149. Which tube for OPT 7,5k SE low watts???
  150. help me with this puzzle...
  151. Univox 1501 Fried Resistors
  152. It makes me wonder ...
  153. Tubes operating in horizontal position
  154. Dewald radio N-803b keep or use parts?
  155. Ongaku
  156. PSU Design question
  157. Primary reactance of a parafeed OPT
  158. Info on IIT interstage trafos?
  159. vt25/10-Y or 45 tube
  160. 2a3, single plate-double plate?
  161. Preferred tube? KT88 vs. EL34
  162. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  163. Parallelling power supply chokes???
  164. Sherwood S7000
  165. please explain plate curves
  166. Triode connected SV6550C with 500V HT
  167. KT88 SE schematic wanted.
  168. 6SN7 based tube buffer
  169. hum measurement
  170. Load of tubes to liquidate
  171. Unhappy with the Lilliput design
  172. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  173. Tube Technology Prophet
  174. Cathode Feedback from Secondary for PP Amp
  175. Zenith Amplifier
  176. Dynaco SCA-35 fixer-upper
  177. Multiple primary power transformer question
  178. Sizing a Regulator
  179. will laziness burn my amp down?!
  180. resistors of a lower power rating
  181. wavy vibrato-like sound when amp cranked
  182. Rh34se?
  183. Ef86, 6n1p & 845pp
  184. HYBRID POWER AMPLIFIER - please help!
  185. 6528 Se
  186. single ended HiFi Regal stereo tube amplifier
  187. Matisse Line Amp
  188. changing longtail
  189. What do you think??????
  190. The amplifier itself whines
  191. DIY repair- replacing capacitors
  192. Benefits of 845B
  193. Counterpoint Preamp Modifications
  194. Humming Sovtek EF86
  195. Output Transformers
  196. RIAA phono stage
  197. The cathode FeedBack in Push-Pull amp
  198. What's a Field Coil Amplifier?
  199. Need help for ampeg tube amp transformers ...
  200. HF filter inductors for signal path
  201. Different tube options for DCMB driver stage?
  202. Crowhurst paper on output xformer search
  203. Tamura inputs trans used as linestage out
  204. Seperate Amp for center channel
  205. Look for UL41 PP Structure!!
  206. Photoelectric valves?
  207. Bell Carrillon tube amp 6V6
  208. Yamamoto Sound Craft A-08 Amplifier
  209. Wanted Radford MA-15
  210. Beyond SET and ParaFeed.... Complementary Current Triode
  211. Too much gain
  212. 2 To 3 Prong Conversion
  213. 6c33 Set
  214. Svetlana MVSZ ---> cheat??
  215. separation of phono power supply for marantz m7 clone
  216. 300b Circuit Mod.
  217. james transformers
  218. ecc preamp schematics please!!!
  219. 845B problem
  220. 150W Garage sale find.
  221. speakers for class A ?
  222. Power Tx core should ground?
  223. First try, Would some one look over.
  224. Global Feedback in Push Pull Amps
  225. Heater voltage circuit change......why please
  226. EICO 147A operators manual
  227. Please Help My Tube Microphones!
  228. Magnetic Circuit Gurus Needed
  229. Tube Blues
  230. end of tube
  231. What is meant by 'Extended Cut-off'?
  232. How is it possible?
  233. best long life for my tube
  234. My first tube amp design...check it out.
  235. Tube driver for a SS power amplifier
  236. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  237. www.thetubecenter.com = reliable?
  238. Lp values for guitar amp OT
  239. what do I replace...?
  240. Rectifiers: Tube vs Solid state..
  241. What can I do with 3Q4 Pentode tubes?
  242. DIY Powdered Core Progress Report
  243. PP output transformer grounded or not ?
  244. Bias supply question
  245. Minimum filament voltage for 300B
  246. Is it ok to combine output transformers?
  247. JE labs 2A3 evaluation
  248. 6sn7,6h30,6c33c ?
  249. signal ground and earth ground
  250. Recommended 6SN7 and 6SL7

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