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  1. philips el6400 tubeamp
  2. How much power do I really need?
  3. 6H30 phono with passive RIAA
  4. I need help troubleshooting a EL84 push pull amp.
  5. Tube Data needed please
  6. Filament Transformer
  7. strange tube
  8. 12AX7 and 12AT7 numerical data
  9. DC/DC converter to power tube amp?
  10. Basic Cathode Follower buffer
  11. Help me!!! I need schematic of Pow-Amp using 6V6
  12. gi30, se pentode?
  13. Any experience with Chinese 6N8P
  14. Source for common mode chokes
  15. Low Power FM stereo transmitter?
  16. Rh807
  17. Replacing a power tube (used as driver for mosfet car amp)...how to bias?
  18. Question about sub out on amp
  19. opt question
  20. Tube socket wanted. (help where)
  21. voltage regulator using ECL84 + OB2
  22. Help! 6sn7GT
  23. tubes n needles
  24. PSpice/LTSpice model for 6AU6/EF94?
  25. 5AR4/GZ34 GT Britain
  26. CCS vs mu-follower. What's the difference?
  27. Need advice on two preamp kits.
  28. My First Tube Amplifier
  29. Output (beam) pentodes / tetrodes suitable for screen grid drive
  30. Patent applications of interest
  31. Rca
  32. Melos GK-1 Tube Pre-amp Schematic needed ...
  33. 6L6s and 6AR6s - what can I do with them?
  34. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  35. 1600v HT supply for scope.
  36. Mc 275 CE schema
  37. Help! is this work?
  38. Some questons on a DIY system.
  39. pinout on 6GT5A tube
  40. 50Hz hum after increasing grid stopper
  41. A Heretical Unity Gain Line Stage part II
  42. 832A Push Pull 5W
  43. PSpice/LTSpice model for 12AY7/6072 wanted
  44. Is this circuit I drew ok?
  45. Suggest a preamp for cd/tuner
  46. EL84 to 6l6
  47. Tube-cad, is it worth the $40?
  48. Grounded Grid Preamp Project And Possible Group PCB Buy
  49. Can anyone sujest a good operating point for the PL84
  50. Preamp hiss noise
  51. Audio Note Trans 205 specs?
  52. Help translating russian tube datasheet
  53. Very high output level!
  54. Help wanted with valve data
  55. Boiling sound...
  56. Negative Feedback Ground
  57. low power SE with 813
  58. KT instead EL
  59. a single double triode and two chanel?
  60. 76 driving 211?
  61. My Experience with "Music Angel" EL34 PP
  62. 12JT6 in triode mode curves needed
  63. Where did these EL84 numbers come from?
  64. int. low signal
  65. FFT analysis-Truth or Consequence
  66. 6sn7gtb Filament Voltage
  67. Help with Tube Buffer for passive pre
  68. Is there a 12CM7?
  69. 12ax7
  70. tube driving the same tube - whats the collective word?
  71. 6c33c PSE
  72. 75% of rated max. current too high?
  73. ST shaped tube
  74. Tube Phono Pre of RJM
  75. how to determine P1 from P2 of a Push-pull transformer?
  76. fisher x100a
  77. Please review EL84M PP design before I order parts.
  78. Auction Gem Motorola? Go Figure!
  79. Darling amp plate voltage
  80. Sound quality of 6C4C is same with 2A3?
  81. 6,3VAC to 6,3VDC
  82. EL84 push pull idea
  83. Marantz preamp clone for newbie?
  84. Can I use Philips TB2.5 /400 in a SE ampl.
  85. Microwave + Computer = Tube? [help!]
  86. Plate Choke Miller Capacitance
  87. Anyone interested in building an EAR 834P?
  88. tube pre-amp
  89. Choke For Supply B+ Diy
  90. Audio Note DAC4 SRPP output stage problems!
  91. Regulated Dc Question
  92. what about tubes?
  93. Please help choose amp layout.
  94. SE 813 OPT..Am I On the right Track?
  95. say it's a hum problem
  96. Affordable KT88
  97. With transformer or OTL ?
  98. 45 SE tube amp OPT
  99. 2 Bogen 7027 tube amp vintage amplifier mono block
  100. Newnewbie Ouput Tranny question
  101. Webcor Amplifier Speaker
  102. could 24A been power tube
  103. How's this for a first amp?
  104. U.K. transformer supplier
  105. stereo el34 + kt66?
  106. Very tempting Good invesment or not????????
  107. A Heretical Unity gain line stage
  108. NFB net gain or loss
  109. Different brands:Is there any difference?
  110. McIntosh 225 Schematic
  111. LM317 for power amp regulation?
  112. KT88 or 6550?
  113. How to choose 6c33b?
  114. Using rectifier tubes in parallell
  115. Small problem at power off
  116. Preamp rebuild - hum problem
  117. what should I do with this tranny???
  118. Will this 2A3 PSE work?
  119. Ec86
  120. Worth to buy - tubes?
  121. 10/10/ preamp
  122. what do you think of this preamp?
  123. Tube FM -- Armstrong's first bdcst commemorated
  124. rjm 6dj8 phono section
  125. mercury vapor rectifier tubes on e-bay
  126. Russian Tube Stuff -- WSJ
  127. Help Please!!!!!!
  128. 5902 amp schematics?
  129. Microphonics...........
  130. High voltage PSU
  131. 2A3 v 6550
  132. Coupling cap question
  133. Wollcott cross coupled circuit
  134. TAD Tubes where are they from?
  135. ebay Junk or Treasures?
  136. interconnects
  137. In few words
  138. GlassFET Design Ideas
  139. ecc88 tube pover supply-rect.
  140. A tubeNoob enters => I bought a Dynavox VR-70E
  141. Heater Supply using LM3X7 current source
  142. Stepdown input trafo
  143. increasing the bias will cause the amp to.....
  144. Transformer faulty?
  145. More crappy Russian EL34s - Svetlana this time
  146. My Tragic story about Emission Labs tube
  147. Please help me solve the problem
  148. amp freq response with o-scope
  149. Can you SEE (construction) how a tube SOUNDS?
  150. CCS fed shunt regulators
  151. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  152. ebay toys
  153. Source for 6c45pi's???
  154. phono preamp design for c3m postie valve
  155. McMartin MA-50 Troubleshooting
  156. looking for something different
  157. mc275
  158. Sv572-3 Se
  159. Alps step attenuator
  160. seeking real kt90 pp schematics
  161. -50V negative supply
  162. Inductance coupling between chokes
  163. Mercury Magnetics
  164. warming up thetubes
  165. distorsion
  166. using a plate choke?
  167. Should I trash these tubes
  168. Minature Vaccum Tube Question
  169. 46 tube user
  170. Smells like a mistake
  171. Help for my hybird zero feedback AMP
  172. help on ul transformer please
  173. Wiring the D3a as triode - What is best?
  174. Switching from ultralinear to triode
  175. Help for a Output Transfo problem
  176. Pentode models
  177. Good or bad to use parallel capacitors of same value in signal path...
  178. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  179. ASL wave 8 mods
  180. lectron jh 60 help----------------
  181. crown tube poweramp
  182. Alan kimmel mu stage article
  183. What would you do with this amp?
  184. tube software
  185. Simple Valve Preamplifier
  186. Current sourced heaters in a CF
  187. Tubes and music styles
  188. Cheap SE EL84
  189. Making a living out of tubes? (A little off-topic)
  190. EL84 matched pairs
  191. Tango XE20S voltage rating?
  192. power transformer heat
  193. Used Tube Amps, second life..
  194. Tubes
  195. Taylor 845
  196. The DIYHifiSupply.com Joplin amplifier Kit
  197. Berning P-1 Preamp
  198. Which tube for OPT 7,5k SE low watts???
  199. help me with this puzzle...
  200. It makes me wonder ...
  201. Tubes operating in horizontal position
  202. Dewald radio N-803b keep or use parts?
  203. Ongaku
  204. PSU Design question
  205. Primary reactance of a parafeed OPT
  206. Info on IIT interstage trafos?
  207. vt25/10-Y or 45 tube
  208. 2a3, single plate-double plate?
  209. Preferred tube? KT88 vs. EL34
  210. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  211. Parallelling power supply chokes???
  212. Sherwood S7000
  213. please explain plate curves
  214. Triode connected SV6550C with 500V HT
  215. KT88 SE schematic wanted.
  216. 6SN7 based tube buffer
  217. hum measurement
  218. Load of tubes to liquidate
  219. Unhappy with the Lilliput design
  220. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  221. Tube Technology Prophet
  222. Cathode Feedback from Secondary for PP Amp
  223. Zenith Amplifier
  224. Dynaco SCA-35 fixer-upper
  225. Multiple primary power transformer question
  226. Sizing a Regulator
  227. will laziness burn my amp down?!
  228. resistors of a lower power rating
  229. wavy vibrato-like sound when amp cranked
  230. Rh34se?
  231. Ef86, 6n1p & 845pp
  232. HYBRID POWER AMPLIFIER - please help!
  233. 6528 Se
  234. single ended HiFi Regal stereo tube amplifier
  235. Matisse Line Amp
  236. changing longtail
  237. What do you think??????
  238. The amplifier itself whines
  239. DIY repair- replacing capacitors
  240. Benefits of 845B
  241. Counterpoint Preamp Modifications
  242. Humming Sovtek EF86
  243. Output Transformers
  244. RIAA phono stage
  245. The cathode FeedBack in Push-Pull amp
  246. What's a Field Coil Amplifier?
  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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