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  1. 6SL7 diff pair - how to set up????
  2. Hwat should be the best driver for a 520V2 ?
  3. problem: half power on push-pull ?
  4. Screen voltage - standby cut (Roland Bolt 60)
  5. Triode Dick/FdeGrove 2A3 PP amplifier
  6. PSU for perusal
  7. Kt66 Gec Replica
  8. 6as7
  9. Please confirm my transformer math.
  10. Anything wrong with this design?
  11. Buffer Line Pre-Amp Power Tx
  12. Why filter in tube DAC?
  13. advances in tube amp design?
  14. How to determine grid leak current?
  15. dissimilar triode for White cathode follower?
  16. tube rectifier
  17. 6Vdc from 6,3Vac
  18. Computer Grade Cap or Inverter Grade Cap???
  19. Peculiar Sovtek EL34 bevaviour
  20. 5AS4 sub for 5U4
  21. Preamp hum again
  22. Modifying amp to accept different tubes (Newbie alert!)
  23. Quetion for Thorsten
  24. OPT axis
  25. Schematic Counterpoint SA3.1 and SA-9
  26. optimizing constant current heater supply
  27. Valve Art KT100
  28. baxandall tone control
  29. Kofi Annan in: "Brownin' Out!"
  30. strange tube
  31. Monarch SA-30 Schematic
  32. Power Supply for 300B Monoblock
  33. Matisse Line Amp
  34. Panel mounting on a woode case
  35. Hardware??
  36. another way to turn a pentode or tetrode into a triode
  37. 0Z4 as a rectifier?
  38. Unused HV windings on power transformer
  39. Mundorf M-Lytic and Silver-in-Oil Capacitors
  40. grainy preamp gain
  41. Need help with PS for 1626 "Darling" amp
  42. questions about power supply for 6l6 pp
  43. Proof that demagnetizing tubes works
  44. ECC88/5687/2A3 amp voltages
  45. What can I do with these? (tube and OPT question)
  46. Blowing fuses
  47. questions about transfo
  48. Common Cathode Resistor
  49. Why a Zobel network across OPT primary or secondary?
  50. Morgan Jones "Valve Amplifiers"
  51. Why?
  52. 833 push pull design help
  53. Lamm schematics
  54. Mu Followers -- ressources?
  55. Pennsylvania DIY's
  56. Interstage trans? Yes please!
  57. What's wrong with UL anyway ?
  58. SE amp like mcintosh ?
  59. 300b Push Pull Interstage Tsf
  60. amp stages...
  61. Heater supply recommendation for 6922?
  62. hi-end?
  63. Just a quicky
  64. Question on Mains Transformer
  65. Help! Who is the dirtributors of 6V4/EZ80 and 6H30/6N30?
  66. SE 6AS7 amp question
  67. Timed switch on B+ in power supply, good idea?
  68. Parts Sourcing
  69. Power Supply Question
  70. tube amp kits
  71. in search of a schematic
  72. heater wiring
  73. 5A/152M perfect driver? SPICE?
  74. 12AU7 -> 12BH7 Do I need to change Rp?
  75. Need help understanding transformer impedance ratios and impedance matching
  76. Audio schematics for GU50 ????
  77. 6sn7 & 6sn7GTB
  78. Tube amp schematic - any thoughts?
  79. tube distortion effect.
  80. tube rolling Blue Circle BC 21 preamp
  81. A sorry tale which will make you cry !!!
  82. Variac problems
  83. tubeamp project, weekend timekiller
  84. isolated supply grounding
  85. Car preamp with Aikido
  86. Audio Note M1 potentiometer question
  87. Beginner , tube kit suggestions please
  88. anyone ever used metalized polypropylene caps from Digi-key?
  89. Question on OPT
  90. Telefunken S80 Stereo ECL82 Amp- any comment?
  91. Active crossovers using Tubes
  92. 300BSE power amplifier circuit
  93. tube buffer using 12bz7
  94. "Complete" SE KT88
  95. Output Tube biasing for Toroidal Output Transformer
  96. Cardas Golden Capacitors
  97. Tube Buffer for CD-PRO2M (6922)
  98. Troubleshooting fuse blowing
  99. Billington valves and quallity
  100. Regulated PSU, your comments please.
  101. Change coupling cap from .47uf to 2.2uf
  102. RIAA Schematics?
  103. Line out for subwoofer in tube amps
  104. Feedback in IT coupled amps?
  105. Filemant Voltage
  106. DC compensated SE output transformer
  107. Winding an audio transformer
  108. Tube effects Loop Schematics... ?
  109. Scrap Heathkit W-5m for guitar amp?
  110. KT100...what's this ??
  111. Help measuring output impedience
  112. tubes
  113. Need PP KT-88 amp design and KT-88 for triode use?
  114. 7241 tube
  115. Max B+ for 807 UL?
  116. Fender amplifier.. burnt choke ??
  117. Problem with my Darling!
  118. Effect of cross-coupled "local" FB on plate load of previous stage
  119. wickedly awsome guitar amp
  120. DC coupled long tailed pairs
  121. I need an advice for these tubes..
  122. Anode Resistors on PPP Amps
  123. help with modifing a H/K A500 amp
  124. Damper Diode Musings
  125. Heater Question
  126. Push pull designs.
  127. Anybody heard about Tarzian Silicon Rectifier for Tube Rectifier Replacement?
  128. Voice of Music 555 phonograph
  129. Direct driving of GM70 by one ECL86 ???
  130. Bogen amp schematic
  131. 6336a
  132. Power transformer colors & wiring
  133. Stepped Attenuator and Selector Switch
  134. Music without speakers? Need help.
  135. el84 ultra linear datat sheet
  136. 2a3 layout
  137. Matisse Ref per amp
  138. Recommendations for Simple SET Amp Topologies
  139. HV power supply repair
  140. Grundig Model 3265U Restore?
  141. Valve Art EL 156!
  142. Classe A 6550 40W
  143. Lafayette Bypass Option
  144. Plate curves or Op Point for 6KN8?
  145. 12e1 sub for 807 ?
  146. Extremely low power and low loss transformers
  147. looking for power supply diagram SE 813 45 Watt
  148. How to make this 6C33C better??
  149. All octal 6AS7 PP amp is it possible?
  150. Toroids VS EI Transfomers
  151. Bias secrets for a HH Scott 233?!?
  152. new idea of DHT heater supply
  153. Eastern Audio transformers: any good?
  154. UL40-S2 schematic
  155. Tube monster amplifier
  156. Big pentode help!
  157. which one?
  158. system matching
  159. a 5ar4 problem
  160. coupling capacitor intermediate values
  161. Quicksilver Mono 60 upgrades
  162. Can anything be done
  163. OTL ECC88 amp
  164. Bridging Mono Blocks
  165. Cathode-coupled Phase Splitter Formula
  166. Drd 45, 300b
  167. SV572-30: Opinions?
  168. Poor man's transformer volume control?
  169. Output current of this CAT SL-1 schematic ?
  170. Fixed Bias Circuit for 300B
  171. want to build SE450TL
  172. Tubes lifetime and sound
  173. Heater supply problem?
  174. Lowering HV secondary on Power Transformer
  175. Van der Veen 70W tube Amp DIY
  176. 5751 for marantz 7 linestage
  177. To be or not to be, UL or quad?
  178. Tube Failure
  179. 12AX7 Compared!
  180. transformer case grounding
  181. pre/amplifier grounding
  182. First Time Amp
  183. 6ck4 pp amp
  184. JJ electros, any good?
  185. 6AQ5A guitar amp revisited
  186. fun with amps
  187. Newbie needs clarification
  188. looking for powerful Single Ended diagram.
  189. Power amp output newbie question
  190. SE ultralinear amplifier generate a lot of Odd harmonics ?
  191. Grounding Filament CT?
  192. one more 12B4A preamp
  193. 6V6PP -> 6L6 PP with triode connection.
  194. ? about powering a sub with a Fisher 30a mono amp.
  195. Will This Blow Up?
  196. Pin out conversion 6V6-6AQ5A
  197. 211
  198. Nice looking rectifier tubes help
  199. Stepped attenuator inquiry
  200. Designing a Phonostage with the S&B 10K LCR RIAA Module
  201. 211 tube
  202. The T-Rex SET Amplifier DIY project
  203. Strange Wiring in Bogen 6v6 PP
  204. 6AS7 amp schematics
  205. Blue glow confused :(
  206. 6V6 SE and Screen Grid Voltage
  207. 6BQ5 <-> 6V6 without socket job...Any Idea?
  208. Melbourne, Australia valve enthusiasts check in!
  209. HELP! Blown R + HIGH V!
  210. PCB Pad Layout for B9A Noval
  211. DIY tube amps - help??
  212. New home made S.E amps
  213. Amplifier Oscillation
  214. First project, need guidance
  215. Cap max value after 6X5GT/EZ35 rectifier?
  216. Any tube-heads in Scotland?
  217. Care and Feeding of Tube Pins / Sockets
  218. MFA Luminescence--need schematic
  219. Tube technology amplifier
  220. Transformer questions
  221. Siemens C3g headamp problem
  222. rca83 hash?
  223. Skyline SK-10 Amplifier info?
  224. Tube Stereo Consoles from Thrift Stores
  225. Aikido amp theoretical questions
  226. 6V6 Single and 12AT7 SRPP
  227. What 45 SET amp should I build?
  228. Ping. Burnedfingers...
  229. ? problem with www.ampwares.com ?
  230. Pentode spud...?
  231. Type 46 as voltage amplifier
  232. Tube compressor problem!
  233. Using the 83
  234. Organ amp project
  235. Any feedback on these trannies?
  236. 300B PP bias and expected life time
  237. Mono block restoration
  238. Question about cathode bypass capacitor
  239. www.diytube.com Kits
  240. need help!
  241. Need opinion on PS for tube preamp.
  242. Stanley Mullard
  243. 6AK4, Anyone?
  244. interstage transformer
  245. Are matched sets important for this amp?
  246. What to do with ECC88's?
  247. EL38's ?
  248. Cables/tubes for Valve Amp
  249. 8233 / E55L Applications
  250. amplimo budget outputtransformer

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