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  1. Help! 6sn7GT
  2. tubes n needles
  3. PSpice/LTSpice model for 6AU6/EF94?
  4. 5AR4/GZ34 GT Britain
  5. CCS vs mu-follower. What's the difference?
  6. Need advice on two preamp kits.
  7. My First Tube Amplifier
  8. Output (beam) pentodes / tetrodes suitable for screen grid drive
  9. Patent applications of interest
  10. Rca
  11. Melos GK-1 Tube Pre-amp Schematic needed ...
  12. 6L6s and 6AR6s - what can I do with them?
  13. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  14. 1600v HT supply for scope.
  15. Mc 275 CE schema
  16. Help! is this work?
  17. Some questons on a DIY system.
  18. pinout on 6GT5A tube
  19. 50Hz hum after increasing grid stopper
  20. A Heretical Unity Gain Line Stage part II
  21. 832A Push Pull 5W
  22. PSpice/LTSpice model for 12AY7/6072 wanted
  23. Is this circuit I drew ok?
  24. Suggest a preamp for cd/tuner
  25. EL84 to 6l6
  26. Tube-cad, is it worth the $40?
  27. Grounded Grid Preamp Project And Possible Group PCB Buy
  28. Can anyone sujest a good operating point for the PL84
  29. Preamp hiss noise
  30. Audio Note Trans 205 specs?
  31. Help translating russian tube datasheet
  32. Very high output level!
  33. Help wanted with valve data
  34. Boiling sound...
  35. Negative Feedback Ground
  36. low power SE with 813
  37. KT instead EL
  38. a single double triode and two chanel?
  39. 76 driving 211?
  40. My Experience with "Music Angel" EL34 PP
  41. 12JT6 in triode mode curves needed
  42. Where did these EL84 numbers come from?
  43. int. low signal
  44. FFT analysis-Truth or Consequence
  45. 6sn7gtb Filament Voltage
  46. Help with Tube Buffer for passive pre
  47. Is there a 12CM7?
  48. 12ax7
  49. tube driving the same tube - whats the collective word?
  50. 6c33c PSE
  51. 75% of rated max. current too high?
  52. ST shaped tube
  53. Tube Phono Pre of RJM
  54. how to determine P1 from P2 of a Push-pull transformer?
  55. fisher x100a
  56. Please review EL84M PP design before I order parts.
  57. Auction Gem Motorola? Go Figure!
  58. Darling amp plate voltage
  59. Sound quality of 6C4C is same with 2A3?
  60. 6,3VAC to 6,3VDC
  61. EL84 push pull idea
  62. Marantz preamp clone for newbie?
  63. Can I use Philips TB2.5 /400 in a SE ampl.
  64. Microwave + Computer = Tube? [help!]
  65. Plate Choke Miller Capacitance
  66. Anyone interested in building an EAR 834P?
  67. tube pre-amp
  68. Choke For Supply B+ Diy
  69. Audio Note DAC4 SRPP output stage problems!
  70. Regulated Dc Question
  71. what about tubes?
  72. Please help choose amp layout.
  73. SE 813 OPT..Am I On the right Track?
  74. say it's a hum problem
  75. Affordable KT88
  76. With transformer or OTL ?
  77. 45 SE tube amp OPT
  78. 2 Bogen 7027 tube amp vintage amplifier mono block
  79. Newnewbie Ouput Tranny question
  80. Webcor Amplifier Speaker
  81. could 24A been power tube
  82. How's this for a first amp?
  83. U.K. transformer supplier
  84. stereo el34 + kt66?
  85. Very tempting Good invesment or not????????
  86. A Heretical Unity gain line stage
  87. NFB net gain or loss
  88. Different brands:Is there any difference?
  89. McIntosh 225 Schematic
  90. LM317 for power amp regulation?
  91. KT88 or 6550?
  92. How to choose 6c33b?
  93. Using rectifier tubes in parallell
  94. Small problem at power off
  95. Preamp rebuild - hum problem
  96. what should I do with this tranny???
  97. Will this 2A3 PSE work?
  98. Ec86
  99. Worth to buy - tubes?
  100. 10/10/ preamp
  101. what do you think of this preamp?
  102. Tube FM -- Armstrong's first bdcst commemorated
  103. rjm 6dj8 phono section
  104. mercury vapor rectifier tubes on e-bay
  105. Russian Tube Stuff -- WSJ
  106. Help Please!!!!!!
  107. 5902 amp schematics?
  108. Microphonics...........
  109. High voltage PSU
  110. 2A3 v 6550
  111. Coupling cap question
  112. Wollcott cross coupled circuit
  113. TAD Tubes where are they from?
  114. ebay Junk or Treasures?
  115. interconnects
  116. In few words
  117. GlassFET Design Ideas
  118. ecc88 tube pover supply-rect.
  119. A tubeNoob enters => I bought a Dynavox VR-70E
  120. Heater Supply using LM3X7 current source
  121. Stepdown input trafo
  122. increasing the bias will cause the amp to.....
  123. Transformer faulty?
  124. More crappy Russian EL34s - Svetlana this time
  125. My Tragic story about Emission Labs tube
  126. Please help me solve the problem
  127. amp freq response with o-scope
  128. Can you SEE (construction) how a tube SOUNDS?
  129. CCS fed shunt regulators
  130. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  131. ebay toys
  132. Source for 6c45pi's???
  133. phono preamp design for c3m postie valve
  134. McMartin MA-50 Troubleshooting
  135. looking for something different
  136. mc275
  137. Sv572-3 Se
  138. Alps step attenuator
  139. seeking real kt90 pp schematics
  140. -50V negative supply
  141. Inductance coupling between chokes
  142. Mercury Magnetics
  143. warming up thetubes
  144. distorsion
  145. using a plate choke?
  146. Should I trash these tubes
  147. Minature Vaccum Tube Question
  148. 46 tube user
  149. Smells like a mistake
  150. Help for my hybird zero feedback AMP
  151. help on ul transformer please
  152. Wiring the D3a as triode - What is best?
  153. Switching from ultralinear to triode
  154. Help for a Output Transfo problem
  155. Pentode models
  156. Good or bad to use parallel capacitors of same value in signal path...
  157. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  158. ASL wave 8 mods
  159. lectron jh 60 help----------------
  160. crown tube poweramp
  161. Alan kimmel mu stage article
  162. What would you do with this amp?
  163. tube software
  164. Simple Valve Preamplifier
  165. Current sourced heaters in a CF
  166. Tubes and music styles
  167. Cheap SE EL84
  168. Making a living out of tubes? (A little off-topic)
  169. EL84 matched pairs
  170. Tango XE20S voltage rating?
  171. power transformer heat
  172. Used Tube Amps, second life..
  173. Tubes
  174. Taylor 845
  175. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  176. The DIYHifiSupply.com Joplin amplifier Kit
  177. Berning P-1 Preamp
  178. Which tube for OPT 7,5k SE low watts???
  179. help me with this puzzle...
  180. It makes me wonder ...
  181. Tubes operating in horizontal position
  182. Dewald radio N-803b keep or use parts?
  183. Ongaku
  184. PSU Design question
  185. Primary reactance of a parafeed OPT
  186. Info on IIT interstage trafos?
  187. vt25/10-Y or 45 tube
  188. 2a3, single plate-double plate?
  189. Preferred tube? KT88 vs. EL34
  190. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  191. Parallelling power supply chokes???
  192. Sherwood S7000
  193. please explain plate curves
  194. Triode connected SV6550C with 500V HT
  195. KT88 SE schematic wanted.
  196. 6SN7 based tube buffer
  197. hum measurement
  198. Load of tubes to liquidate
  199. Unhappy with the Lilliput design
  200. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  201. Tube Technology Prophet
  202. Cathode Feedback from Secondary for PP Amp
  203. Zenith Amplifier
  204. Dynaco SCA-35 fixer-upper
  205. Multiple primary power transformer question
  206. Sizing a Regulator
  207. will laziness burn my amp down?!
  208. resistors of a lower power rating
  209. wavy vibrato-like sound when amp cranked
  210. Rh34se?
  211. Ef86, 6n1p & 845pp
  212. HYBRID POWER AMPLIFIER - please help!
  213. 6528 Se
  214. single ended HiFi Regal stereo tube amplifier
  215. Matisse Line Amp
  216. changing longtail
  217. What do you think??????
  218. The amplifier itself whines
  219. DIY repair- replacing capacitors
  220. Benefits of 845B
  221. Counterpoint Preamp Modifications
  222. Humming Sovtek EF86
  223. Output Transformers
  224. RIAA phono stage
  225. The cathode FeedBack in Push-Pull amp
  226. What's a Field Coil Amplifier?
  227. HF filter inductors for signal path
  228. Different tube options for DCMB driver stage?
  229. Crowhurst paper on output xformer search
  230. Tamura inputs trans used as linestage out
  231. Seperate Amp for center channel
  232. Look for UL41 PP Structure!!
  233. Photoelectric valves?
  234. Bell Carrillon tube amp 6V6
  235. Yamamoto Sound Craft A-08 Amplifier
  236. Wanted Radford MA-15
  237. Beyond SET and ParaFeed.... Complementary Current Triode
  238. Too much gain
  239. 2 To 3 Prong Conversion
  240. 6c33 Set
  241. Svetlana MVSZ ---> cheat??
  242. separation of phono power supply for marantz m7 clone
  243. 300b Circuit Mod.
  244. james transformers
  245. ecc preamp schematics please!!!
  246. 845B problem
  247. 150W Garage sale find.
  248. speakers for class A ?
  249. Power Tx core should ground?
  250. First try, Would some one look over.

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