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  1. 12AX7 and 12AT7 numerical data
  2. DC/DC converter to power tube amp?
  3. Basic Cathode Follower buffer
  4. Marshall EL84 20/20 schematic needed
  5. Help me!!! I need schematic of Pow-Amp using 6V6
  6. gi30, se pentode?
  7. Any experience with Chinese 6N8P
  8. Source for common mode chokes
  9. Low Power FM stereo transmitter?
  10. Rh807
  11. Replacing a power tube (used as driver for mosfet car amp)...how to bias?
  12. Question about sub out on amp
  13. opt question
  14. Tube socket wanted. (help where)
  15. voltage regulator using ECL84 + OB2
  16. Help! 6sn7GT
  17. tubes n needles
  18. PSpice/LTSpice model for 6AU6/EF94?
  19. 5AR4/GZ34 GT Britain
  20. CCS vs mu-follower. What's the difference?
  21. Need advice on two preamp kits.
  22. My First Tube Amplifier
  23. Output (beam) pentodes / tetrodes suitable for screen grid drive
  24. Patent applications of interest
  25. Rca
  26. Guitar Amps
  27. Melos GK-1 Tube Pre-amp Schematic needed ...
  28. 6L6s and 6AR6s - what can I do with them?
  29. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  30. 1600v HT supply for scope.
  31. Mc 275 CE schema
  32. Help! is this work?
  33. Some questons on a DIY system.
  34. pinout on 6GT5A tube
  35. 50Hz hum after increasing grid stopper
  36. A Heretical Unity Gain Line Stage part II
  37. 832A Push Pull 5W
  38. PSpice/LTSpice model for 12AY7/6072 wanted
  39. Is this circuit I drew ok?
  40. Suggest a preamp for cd/tuner
  41. EL84 to 6l6
  42. Tube-cad, is it worth the $40?
  43. Grounded Grid Preamp Project And Possible Group PCB Buy
  44. Can anyone sujest a good operating point for the PL84
  45. Preamp hiss noise
  46. Audio Note Trans 205 specs?
  47. Help translating russian tube datasheet
  48. Very high output level!
  49. Help wanted with valve data
  50. Boiling sound...
  51. Negative Feedback Ground
  52. low power SE with 813
  53. KT instead EL
  54. a single double triode and two chanel?
  55. 76 driving 211?
  56. My Experience with "Music Angel" EL34 PP
  57. 12JT6 in triode mode curves needed
  58. Where did these EL84 numbers come from?
  59. int. low signal
  60. FFT analysis-Truth or Consequence
  61. 6sn7gtb Filament Voltage
  62. Help with Tube Buffer for passive pre
  63. Is there a 12CM7?
  64. 12ax7
  65. tube driving the same tube - whats the collective word?
  66. 6c33c PSE
  67. 75% of rated max. current too high?
  68. ST shaped tube
  69. Tube Phono Pre of RJM
  70. how to determine P1 from P2 of a Push-pull transformer?
  71. fisher x100a
  72. Please review EL84M PP design before I order parts.
  73. Auction Gem Motorola? Go Figure!
  74. Darling amp plate voltage
  75. Sound quality of 6C4C is same with 2A3?
  76. 6,3VAC to 6,3VDC
  77. EL84 push pull idea
  78. Marantz preamp clone for newbie?
  79. Can I use Philips TB2.5 /400 in a SE ampl.
  80. Microwave + Computer = Tube? [help!]
  81. Oil Capacitor DC vs. AC Voltage Rating
  82. Plate Choke Miller Capacitance
  83. Anyone interested in building an EAR 834P?
  84. tube pre-amp
  85. Choke For Supply B+ Diy
  86. Audio Note DAC4 SRPP output stage problems!
  87. Regulated Dc Question
  88. what about tubes?
  89. Please help choose amp layout.
  90. SE 813 OPT..Am I On the right Track?
  91. say it's a hum problem
  92. Affordable KT88
  93. With transformer or OTL ?
  94. 45 SE tube amp OPT
  95. 2 Bogen 7027 tube amp vintage amplifier mono block
  96. Newnewbie Ouput Tranny question
  97. Webcor Amplifier Speaker
  98. could 24A been power tube
  99. How's this for a first amp?
  100. U.K. transformer supplier
  101. stereo el34 + kt66?
  102. Very tempting Good invesment or not????????
  103. A Heretical Unity gain line stage
  104. NFB net gain or loss
  105. Different brands:Is there any difference?
  106. McIntosh 225 Schematic
  107. LM317 for power amp regulation?
  108. KT88 or 6550?
  109. How to choose 6c33b?
  110. Using rectifier tubes in parallell
  111. Small problem at power off
  112. Preamp rebuild - hum problem
  113. what should I do with this tranny???
  114. Will this 2A3 PSE work?
  115. Ec86
  116. Worth to buy - tubes?
  117. 10/10/ preamp
  118. what do you think of this preamp?
  119. Tube FM -- Armstrong's first bdcst commemorated
  120. rjm 6dj8 phono section
  121. mercury vapor rectifier tubes on e-bay
  122. Russian Tube Stuff -- WSJ
  123. Help Please!!!!!!
  124. 5902 amp schematics?
  125. Microphonics...........
  126. High voltage PSU
  127. 2A3 v 6550
  128. Coupling cap question
  129. Wollcott cross coupled circuit
  130. TAD Tubes where are they from?
  131. ebay Junk or Treasures?
  132. interconnects
  133. In few words
  134. GlassFET Design Ideas
  135. ecc88 tube pover supply-rect.
  136. A tubeNoob enters => I bought a Dynavox VR-70E
  137. plugging guitar amp to phono reciever
  138. Heater Supply using LM3X7 current source
  139. Stepdown input trafo
  140. increasing the bias will cause the amp to.....
  141. Transformer faulty?
  142. More crappy Russian EL34s - Svetlana this time
  143. My Tragic story about Emission Labs tube
  144. Please help me solve the problem
  145. amp freq response with o-scope
  146. Can you SEE (construction) how a tube SOUNDS?
  147. CCS fed shunt regulators
  148. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  149. ebay toys
  150. Source for 6c45pi's???
  151. phono preamp design for c3m postie valve
  152. McMartin MA-50 Troubleshooting
  153. looking for something different
  154. mc275
  155. Sv572-3 Se
  156. Alps step attenuator
  157. seeking real kt90 pp schematics
  158. -50V negative supply
  159. Inductance coupling between chokes
  160. Mercury Magnetics
  161. warming up thetubes
  162. distorsion
  163. using a plate choke?
  164. Should I trash these tubes
  165. Minature Vaccum Tube Question
  166. 46 tube user
  167. Smells like a mistake
  168. Help for my hybird zero feedback AMP
  169. help on ul transformer please
  170. Wiring the D3a as triode - What is best?
  171. Switching from ultralinear to triode
  172. Help for a Output Transfo problem
  173. Pentode models
  174. Good or bad to use parallel capacitors of same value in signal path...
  175. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  176. ASL wave 8 mods
  177. lectron jh 60 help----------------
  178. crown tube poweramp
  179. Alan kimmel mu stage article
  180. What would you do with this amp?
  181. tube software
  182. Simple Valve Preamplifier
  183. Current sourced heaters in a CF
  184. Tubes and music styles
  185. Cheap SE EL84
  186. Making a living out of tubes? (A little off-topic)
  187. EL84 matched pairs
  188. Tango XE20S voltage rating?
  189. power transformer heat
  190. Used Tube Amps, second life..
  191. Tubes
  192. Taylor 845
  193. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  194. The DIYHifiSupply.com Joplin amplifier Kit
  195. Berning P-1 Preamp
  196. Which tube for OPT 7,5k SE low watts???
  197. help me with this puzzle...
  198. Univox 1501 Fried Resistors
  199. It makes me wonder ...
  200. Tubes operating in horizontal position
  201. Dewald radio N-803b keep or use parts?
  202. Ongaku
  203. PSU Design question
  204. Primary reactance of a parafeed OPT
  205. Info on IIT interstage trafos?
  206. vt25/10-Y or 45 tube
  207. 2a3, single plate-double plate?
  208. Preferred tube? KT88 vs. EL34
  209. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  210. Parallelling power supply chokes???
  211. Sherwood S7000
  212. please explain plate curves
  213. Triode connected SV6550C with 500V HT
  214. KT88 SE schematic wanted.
  215. 6SN7 based tube buffer
  216. hum measurement
  217. Load of tubes to liquidate
  218. Unhappy with the Lilliput design
  219. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  220. Tube Technology Prophet
  221. Cathode Feedback from Secondary for PP Amp
  222. Zenith Amplifier
  223. Dynaco SCA-35 fixer-upper
  224. Multiple primary power transformer question
  225. Sizing a Regulator
  226. will laziness burn my amp down?!
  227. resistors of a lower power rating
  228. wavy vibrato-like sound when amp cranked
  229. Rh34se?
  230. Ef86, 6n1p & 845pp
  231. HYBRID POWER AMPLIFIER - please help!
  232. 6528 Se
  233. single ended HiFi Regal stereo tube amplifier
  234. Matisse Line Amp
  235. changing longtail
  236. What do you think??????
  237. The amplifier itself whines
  238. DIY repair- replacing capacitors
  239. Benefits of 845B
  240. Counterpoint Preamp Modifications
  241. Humming Sovtek EF86
  242. Output Transformers
  243. RIAA phono stage
  244. The cathode FeedBack in Push-Pull amp
  245. What's a Field Coil Amplifier?
  246. Need help for ampeg tube amp transformers ...
  247. HF filter inductors for signal path
  248. Different tube options for DCMB driver stage?
  249. Crowhurst paper on output xformer search
  250. Tamura inputs trans used as linestage out

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