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  1. manley 300b preamp schematic required
  2. 115 V transformer on 230 V ???
  3. Hoffman Amps Turret Lugs?
  4. 300B Reliablity
  5. What happens when you starve a heater?
  6. se 6c33c or se el34 schematic
  7. Altec A150C and 531B psu
  8. What's been broken?
  9. tubes here...
  10. Voltage drop AZ1 = AZ11 = RGN1064 rectifier tube
  11. The Beast...
  12. Looking for Mikael's KT88 Schematic
  13. 1.2k vs 2.5k TC on a 6550 amp?
  14. Ultimate Tube head phone amp.
  15. Selecting Output Transformers for My WOT Line Preamp
  16. Tube microphone
  17. OP tube convertible PP amps?
  18. The "Valvolozzo" - SE amp with torroids
  19. Phase Splitters
  20. A new setup, advice wanted
  21. 6e2 Magic eye datasheet
  22. Another linestage......
  23. VT52: are the triode and pentode alike?
  24. Long term planning
  25. vintage restoration
  26. Some doubt about my first Tube amp (Heater).
  27. Power supply for Single Ended Amplifier
  28. Another CD player DAC tube modification
  29. philips el6400 tubeamp
  30. How much power do I really need?
  31. 6H30 phono with passive RIAA
  32. I need help troubleshooting a EL84 push pull amp.
  33. Tube Data needed please
  34. Filament Transformer
  35. strange tube
  36. 12AX7 and 12AT7 numerical data
  37. DC/DC converter to power tube amp?
  38. Basic Cathode Follower buffer
  39. Help me!!! I need schematic of Pow-Amp using 6V6
  40. gi30, se pentode?
  41. Any experience with Chinese 6N8P
  42. Source for common mode chokes
  43. Low Power FM stereo transmitter?
  44. Rh807
  45. Replacing a power tube (used as driver for mosfet car amp)...how to bias?
  46. Question about sub out on amp
  47. opt question
  48. Tube socket wanted. (help where)
  49. voltage regulator using ECL84 + OB2
  50. Help! 6sn7GT
  51. tubes n needles
  52. PSpice/LTSpice model for 6AU6/EF94?
  53. 5AR4/GZ34 GT Britain
  54. CCS vs mu-follower. What's the difference?
  55. Need advice on two preamp kits.
  56. My First Tube Amplifier
  57. Output (beam) pentodes / tetrodes suitable for screen grid drive
  58. Patent applications of interest
  59. Rca
  60. Melos GK-1 Tube Pre-amp Schematic needed ...
  61. 6L6s and 6AR6s - what can I do with them?
  62. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  63. 1600v HT supply for scope.
  64. Mc 275 CE schema
  65. Help! is this work?
  66. Some questons on a DIY system.
  67. pinout on 6GT5A tube
  68. 50Hz hum after increasing grid stopper
  69. A Heretical Unity Gain Line Stage part II
  70. 832A Push Pull 5W
  71. PSpice/LTSpice model for 12AY7/6072 wanted
  72. Is this circuit I drew ok?
  73. Suggest a preamp for cd/tuner
  74. EL84 to 6l6
  75. Tube-cad, is it worth the $40?
  76. Grounded Grid Preamp Project And Possible Group PCB Buy
  77. Can anyone sujest a good operating point for the PL84
  78. Preamp hiss noise
  79. Audio Note Trans 205 specs?
  80. Help translating russian tube datasheet
  81. Very high output level!
  82. Help wanted with valve data
  83. Boiling sound...
  84. Negative Feedback Ground
  85. low power SE with 813
  86. KT instead EL
  87. a single double triode and two chanel?
  88. 76 driving 211?
  89. My Experience with "Music Angel" EL34 PP
  90. 12JT6 in triode mode curves needed
  91. Where did these EL84 numbers come from?
  92. int. low signal
  93. FFT analysis-Truth or Consequence
  94. 6sn7gtb Filament Voltage
  95. Help with Tube Buffer for passive pre
  96. Is there a 12CM7?
  97. 12ax7
  98. tube driving the same tube - whats the collective word?
  99. 6c33c PSE
  100. 75% of rated max. current too high?
  101. ST shaped tube
  102. Tube Phono Pre of RJM
  103. how to determine P1 from P2 of a Push-pull transformer?
  104. fisher x100a
  105. Please review EL84M PP design before I order parts.
  106. Auction Gem Motorola? Go Figure!
  107. Darling amp plate voltage
  108. Sound quality of 6C4C is same with 2A3?
  109. 6,3VAC to 6,3VDC
  110. EL84 push pull idea
  111. Marantz preamp clone for newbie?
  112. Can I use Philips TB2.5 /400 in a SE ampl.
  113. Microwave + Computer = Tube? [help!]
  114. Plate Choke Miller Capacitance
  115. Anyone interested in building an EAR 834P?
  116. tube pre-amp
  117. Choke For Supply B+ Diy
  118. Audio Note DAC4 SRPP output stage problems!
  119. Regulated Dc Question
  120. what about tubes?
  121. Please help choose amp layout.
  122. SE 813 OPT..Am I On the right Track?
  123. say it's a hum problem
  124. Affordable KT88
  125. With transformer or OTL ?
  126. 45 SE tube amp OPT
  127. 2 Bogen 7027 tube amp vintage amplifier mono block
  128. Newnewbie Ouput Tranny question
  129. Webcor Amplifier Speaker
  130. could 24A been power tube
  131. How's this for a first amp?
  132. U.K. transformer supplier
  133. stereo el34 + kt66?
  134. Very tempting Good invesment or not????????
  135. A Heretical Unity gain line stage
  136. NFB net gain or loss
  137. Different brands:Is there any difference?
  138. McIntosh 225 Schematic
  139. LM317 for power amp regulation?
  140. KT88 or 6550?
  141. How to choose 6c33b?
  142. Using rectifier tubes in parallell
  143. Small problem at power off
  144. Preamp rebuild - hum problem
  145. what should I do with this tranny???
  146. Will this 2A3 PSE work?
  147. Ec86
  148. Worth to buy - tubes?
  149. 10/10/ preamp
  150. what do you think of this preamp?
  151. Tube FM -- Armstrong's first bdcst commemorated
  152. rjm 6dj8 phono section
  153. mercury vapor rectifier tubes on e-bay
  154. Russian Tube Stuff -- WSJ
  155. Help Please!!!!!!
  156. 5902 amp schematics?
  157. Microphonics...........
  158. High voltage PSU
  159. 2A3 v 6550
  160. Coupling cap question
  161. Wollcott cross coupled circuit
  162. TAD Tubes where are they from?
  163. ebay Junk or Treasures?
  164. interconnects
  165. In few words
  166. GlassFET Design Ideas
  167. ecc88 tube pover supply-rect.
  168. A tubeNoob enters => I bought a Dynavox VR-70E
  169. Heater Supply using LM3X7 current source
  170. Stepdown input trafo
  171. increasing the bias will cause the amp to.....
  172. Transformer faulty?
  173. More crappy Russian EL34s - Svetlana this time
  174. My Tragic story about Emission Labs tube
  175. Please help me solve the problem
  176. amp freq response with o-scope
  177. Can you SEE (construction) how a tube SOUNDS?
  178. CCS fed shunt regulators
  179. Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
  180. ebay toys
  181. Source for 6c45pi's???
  182. phono preamp design for c3m postie valve
  183. McMartin MA-50 Troubleshooting
  184. looking for something different
  185. mc275
  186. Sv572-3 Se
  187. Alps step attenuator
  188. seeking real kt90 pp schematics
  189. -50V negative supply
  190. Inductance coupling between chokes
  191. Mercury Magnetics
  192. warming up thetubes
  193. distorsion
  194. using a plate choke?
  195. Should I trash these tubes
  196. Minature Vaccum Tube Question
  197. 46 tube user
  198. Smells like a mistake
  199. Help for my hybird zero feedback AMP
  200. help on ul transformer please
  201. Wiring the D3a as triode - What is best?
  202. Switching from ultralinear to triode
  203. Help for a Output Transfo problem
  204. Pentode models
  205. Good or bad to use parallel capacitors of same value in signal path...
  206. Urgent: Need Help on Schematics (Tube Pre-Amplifier)
  207. ASL wave 8 mods
  208. lectron jh 60 help----------------
  209. crown tube poweramp
  210. Alan kimmel mu stage article
  211. What would you do with this amp?
  212. tube software
  213. Simple Valve Preamplifier
  214. Current sourced heaters in a CF
  215. Tubes and music styles
  216. Cheap SE EL84
  217. Making a living out of tubes? (A little off-topic)
  218. EL84 matched pairs
  219. Tango XE20S voltage rating?
  220. power transformer heat
  221. Used Tube Amps, second life..
  222. Tubes
  223. Taylor 845
  224. The DIYHifiSupply.com Joplin amplifier Kit
  225. Berning P-1 Preamp
  226. Which tube for OPT 7,5k SE low watts???
  227. help me with this puzzle...
  228. It makes me wonder ...
  229. Tubes operating in horizontal position
  230. Dewald radio N-803b keep or use parts?
  231. Ongaku
  232. PSU Design question
  233. Primary reactance of a parafeed OPT
  234. Info on IIT interstage trafos?
  235. vt25/10-Y or 45 tube
  236. 2a3, single plate-double plate?
  237. Preferred tube? KT88 vs. EL34
  238. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  239. Parallelling power supply chokes???
  240. Sherwood S7000
  241. please explain plate curves
  242. Triode connected SV6550C with 500V HT
  243. KT88 SE schematic wanted.
  244. 6SN7 based tube buffer
  245. hum measurement
  246. Load of tubes to liquidate
  247. Unhappy with the Lilliput design
  248. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  249. Tube Technology Prophet
  250. Cathode Feedback from Secondary for PP Amp

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