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  1. Melos GK-1 Tube Pre-amp Schematic needed ...
  2. 6L6s and 6AR6s - what can I do with them?
  3. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  4. 1600v HT supply for scope.
  5. Mc 275 CE schema
  6. Help! is this work?
  7. Some questons on a DIY system.
  8. pinout on 6GT5A tube
  9. 50Hz hum after increasing grid stopper
  10. A Heretical Unity Gain Line Stage part II
  11. 832A Push Pull 5W
  12. PSpice/LTSpice model for 12AY7/6072 wanted
  13. Is this circuit I drew ok?
  14. Suggest a preamp for cd/tuner
  15. EL84 to 6l6
  16. Tube-cad, is it worth the $40?
  17. Grounded Grid Preamp Project And Possible Group PCB Buy
  18. Can anyone sujest a good operating point for the PL84
  19. Preamp hiss noise
  20. Audio Note Trans 205 specs?
  21. Help translating russian tube datasheet
  22. Very high output level!
  23. Help wanted with valve data
  24. Boiling sound...
  25. Negative Feedback Ground
  26. low power SE with 813
  27. KT instead EL
  28. a single double triode and two chanel?
  29. 76 driving 211?
  30. My Experience with "Music Angel" EL34 PP
  31. 12JT6 in triode mode curves needed
  32. Where did these EL84 numbers come from?
  33. int. low signal
  34. FFT analysis-Truth or Consequence
  35. 6sn7gtb Filament Voltage
  36. Help with Tube Buffer for passive pre
  37. Is there a 12CM7?
  38. 12ax7
  39. tube driving the same tube - whats the collective word?
  40. 6c33c PSE
  41. 75% of rated max. current too high?
  42. ST shaped tube
  43. Tube Phono Pre of RJM
  44. how to determine P1 from P2 of a Push-pull transformer?
  45. fisher x100a
  46. Please review EL84M PP design before I order parts.
  47. Auction Gem Motorola? Go Figure!
  48. Darling amp plate voltage
  49. Sound quality of 6C4C is same with 2A3?
  50. 6,3VAC to 6,3VDC
  51. EL84 push pull idea
  52. Marantz preamp clone for newbie?
  53. Can I use Philips TB2.5 /400 in a SE ampl.
  54. Microwave + Computer = Tube? [help!]
  55. Oil Capacitor DC vs. AC Voltage Rating
  56. Plate Choke Miller Capacitance
  57. Anyone interested in building an EAR 834P?
  58. tube pre-amp
  59. Choke For Supply B+ Diy
  60. Audio Note DAC4 SRPP output stage problems!
  61. Regulated Dc Question
  62. what about tubes?
  63. Please help choose amp layout.
  64. SE 813 OPT..Am I On the right Track?
  65. say it's a hum problem
  66. Affordable KT88
  67. With transformer or OTL ?
  68. 45 SE tube amp OPT
  69. 2 Bogen 7027 tube amp vintage amplifier mono block
  70. Newnewbie Ouput Tranny question
  71. Webcor Amplifier Speaker
  72. could 24A been power tube
  73. How's this for a first amp?
  74. U.K. transformer supplier
  75. stereo el34 + kt66?
  76. Very tempting Good invesment or not????????
  77. A Heretical Unity gain line stage
  78. NFB net gain or loss
  79. Different brands:Is there any difference?
  80. McIntosh 225 Schematic
  81. LM317 for power amp regulation?
  82. KT88 or 6550?
  83. How to choose 6c33b?
  84. Using rectifier tubes in parallell
  85. Small problem at power off
  86. Preamp rebuild - hum problem
  87. what should I do with this tranny???
  88. Will this 2A3 PSE work?
  89. Ec86
  90. Worth to buy - tubes?
  91. 10/10/ preamp
  92. what do you think of this preamp?
  93. Tube FM -- Armstrong's first bdcst commemorated
  94. rjm 6dj8 phono section
  95. mercury vapor rectifier tubes on e-bay
  96. Russian Tube Stuff -- WSJ
  97. Help Please!!!!!!
  98. 5902 amp schematics?
  99. Microphonics...........
  100. High voltage PSU
  101. 2A3 v 6550
  102. Coupling cap question
  103. Wollcott cross coupled circuit
  104. TAD Tubes where are they from?
  105. ebay Junk or Treasures?
  106. interconnects
  107. In few words
  108. GlassFET Design Ideas
  109. ecc88 tube pover supply-rect.
  110. A tubeNoob enters => I bought a Dynavox VR-70E
  111. plugging guitar amp to phono reciever
  112. Heater Supply using LM3X7 current source
  113. Stepdown input trafo
  114. increasing the bias will cause the amp to.....
  115. Transformer faulty?
  116. More crappy Russian EL34s - Svetlana this time
  117. My Tragic story about Emission Labs tube
  118. Please help me solve the problem
  119. amp freq response with o-scope
  120. Can you SEE (construction) how a tube SOUNDS?
  121. CCS fed shunt regulators
  122. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  123. ebay toys
  124. Source for 6c45pi's???
  125. phono preamp design for c3m postie valve
  126. McMartin MA-50 Troubleshooting
  127. looking for something different
  128. mc275
  129. Sv572-3 Se
  130. Alps step attenuator
  131. seeking real kt90 pp schematics
  132. -50V negative supply
  133. Inductance coupling between chokes
  134. Mercury Magnetics
  135. warming up thetubes
  136. distorsion
  137. using a plate choke?
  138. Should I trash these tubes
  139. Minature Vaccum Tube Question
  140. 46 tube user
  141. Smells like a mistake
  142. Help for my hybird zero feedback AMP
  143. help on ul transformer please
  144. Wiring the D3a as triode - What is best?
  145. Switching from ultralinear to triode
  146. Help for a Output Transfo problem
  147. Pentode models
  148. Good or bad to use parallel capacitors of same value in signal path...
  149. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  150. ASL wave 8 mods
  151. lectron jh 60 help----------------
  152. crown tube poweramp
  153. Alan kimmel mu stage article
  154. What would you do with this amp?
  155. tube software
  156. Simple Valve Preamplifier
  157. Current sourced heaters in a CF
  158. Tubes and music styles
  159. Cheap SE EL84
  160. Making a living out of tubes? (A little off-topic)
  161. EL84 matched pairs
  162. Tango XE20S voltage rating?
  163. power transformer heat
  164. Used Tube Amps, second life..
  165. Tubes
  166. Taylor 845
  167. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  168. The DIYHifiSupply.com Joplin amplifier Kit
  169. Berning P-1 Preamp
  170. Which tube for OPT 7,5k SE low watts???
  171. help me with this puzzle...
  172. Univox 1501 Fried Resistors
  173. It makes me wonder ...
  174. Tubes operating in horizontal position
  175. Dewald radio N-803b keep or use parts?
  176. Ongaku
  177. PSU Design question
  178. Primary reactance of a parafeed OPT
  179. Info on IIT interstage trafos?
  180. vt25/10-Y or 45 tube
  181. 2a3, single plate-double plate?
  182. Preferred tube? KT88 vs. EL34
  183. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  184. Parallelling power supply chokes???
  185. Sherwood S7000
  186. please explain plate curves
  187. Triode connected SV6550C with 500V HT
  188. KT88 SE schematic wanted.
  189. 6SN7 based tube buffer
  190. hum measurement
  191. Load of tubes to liquidate
  192. Unhappy with the Lilliput design
  193. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  194. Tube Technology Prophet
  195. Cathode Feedback from Secondary for PP Amp
  196. Zenith Amplifier
  197. Dynaco SCA-35 fixer-upper
  198. Multiple primary power transformer question
  199. Sizing a Regulator
  200. will laziness burn my amp down?!
  201. resistors of a lower power rating
  202. wavy vibrato-like sound when amp cranked
  203. Rh34se?
  204. Ef86, 6n1p & 845pp
  205. HYBRID POWER AMPLIFIER - please help!
  206. 6528 Se
  207. single ended HiFi Regal stereo tube amplifier
  208. Matisse Line Amp
  209. changing longtail
  210. What do you think??????
  211. The amplifier itself whines
  212. DIY repair- replacing capacitors
  213. Benefits of 845B
  214. Counterpoint Preamp Modifications
  215. Humming Sovtek EF86
  216. Output Transformers
  217. RIAA phono stage
  218. The cathode FeedBack in Push-Pull amp
  219. What's a Field Coil Amplifier?
  220. Need help for ampeg tube amp transformers ...
  221. HF filter inductors for signal path
  222. Different tube options for DCMB driver stage?
  223. Crowhurst paper on output xformer search
  224. Tamura inputs trans used as linestage out
  225. Seperate Amp for center channel
  226. Look for UL41 PP Structure!!
  227. Photoelectric valves?
  228. Bell Carrillon tube amp 6V6
  229. Yamamoto Sound Craft A-08 Amplifier
  230. Wanted Radford MA-15
  231. Beyond SET and ParaFeed.... Complementary Current Triode
  232. Too much gain
  233. 2 To 3 Prong Conversion
  234. 6c33 Set
  235. Svetlana MVSZ ---> cheat??
  236. separation of phono power supply for marantz m7 clone
  237. 300b Circuit Mod.
  238. james transformers
  239. ecc preamp schematics please!!!
  240. 845B problem
  241. 150W Garage sale find.
  242. speakers for class A ?
  243. Power Tx core should ground?
  244. First try, Would some one look over.
  245. Global Feedback in Push Pull Amps
  246. Heater voltage circuit change......why please
  247. EICO 147A operators manual
  248. Please Help My Tube Microphones!
  249. Magnetic Circuit Gurus Needed
  250. Tube Blues

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