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  1. 6as7
  2. Please confirm my transformer math.
  3. Anything wrong with this design?
  4. Buffer Line Pre-Amp Power Tx
  5. Why filter in tube DAC?
  6. advances in tube amp design?
  7. How to determine grid leak current?
  8. dissimilar triode for White cathode follower?
  9. tube rectifier
  10. 6Vdc from 6,3Vac
  11. Computer Grade Cap or Inverter Grade Cap???
  12. Peculiar Sovtek EL34 bevaviour
  13. 5AS4 sub for 5U4
  14. Preamp hum again
  15. Modifying amp to accept different tubes (Newbie alert!)
  16. Quetion for Thorsten
  17. OPT axis
  18. Schematic Counterpoint SA3.1 and SA-9
  19. optimizing constant current heater supply
  20. Valve Art KT100
  21. baxandall tone control
  22. Kofi Annan in: "Brownin' Out!"
  23. strange tube
  24. Monarch SA-30 Schematic
  25. Power Supply for 300B Monoblock
  26. Matisse Line Amp
  27. Panel mounting on a woode case
  28. Hardware??
  29. another way to turn a pentode or tetrode into a triode
  30. 0Z4 as a rectifier?
  31. Unused HV windings on power transformer
  32. Mundorf M-Lytic and Silver-in-Oil Capacitors
  33. grainy preamp gain
  34. Need help with PS for 1626 "Darling" amp
  35. questions about power supply for 6l6 pp
  36. Proof that demagnetizing tubes works
  37. ECC88/5687/2A3 amp voltages
  38. What can I do with these? (tube and OPT question)
  39. Blowing fuses
  40. questions about transfo
  41. Common Cathode Resistor
  42. Why a Zobel network across OPT primary or secondary?
  43. Morgan Jones "Valve Amplifiers"
  44. Why?
  45. 833 push pull design help
  46. Lamm schematics
  47. Mu Followers -- ressources?
  48. Pennsylvania DIY's
  49. Interstage trans? Yes please!
  50. What's wrong with UL anyway ?
  51. SE amp like mcintosh ?
  52. 300b Push Pull Interstage Tsf
  53. amp stages...
  54. Heater supply recommendation for 6922?
  55. hi-end?
  56. Just a quicky
  57. Question on Mains Transformer
  58. Help! Who is the dirtributors of 6V4/EZ80 and 6H30/6N30?
  59. SE 6AS7 amp question
  60. Timed switch on B+ in power supply, good idea?
  61. Parts Sourcing
  62. Power Supply Question
  63. tube amp kits
  64. in search of a schematic
  65. heater wiring
  66. 5A/152M perfect driver? SPICE?
  67. 12AU7 -> 12BH7 Do I need to change Rp?
  68. Need help understanding transformer impedance ratios and impedance matching
  69. Audio schematics for GU50 ????
  70. 6sn7 & 6sn7GTB
  71. Tube amp schematic - any thoughts?
  72. tube distortion effect.
  73. tube rolling Blue Circle BC 21 preamp
  74. A sorry tale which will make you cry !!!
  75. Variac problems
  76. tubeamp project, weekend timekiller
  77. isolated supply grounding
  78. Car preamp with Aikido
  79. Audio Note M1 potentiometer question
  80. Beginner , tube kit suggestions please
  81. anyone ever used metalized polypropylene caps from Digi-key?
  82. Question on OPT
  83. Telefunken S80 Stereo ECL82 Amp- any comment?
  84. Active crossovers using Tubes
  85. 300BSE power amplifier circuit
  86. tube buffer using 12bz7
  87. "Complete" SE KT88
  88. Output Tube biasing for Toroidal Output Transformer
  89. Cardas Golden Capacitors
  90. Tube Buffer for CD-PRO2M (6922)
  91. Troubleshooting fuse blowing
  92. Billington valves and quallity
  93. Regulated PSU, your comments please.
  94. Change coupling cap from .47uf to 2.2uf
  95. RIAA Schematics?
  96. Line out for subwoofer in tube amps
  97. Feedback in IT coupled amps?
  98. Filemant Voltage
  99. DC compensated SE output transformer
  100. Winding an audio transformer
  101. Tube effects Loop Schematics... ?
  102. Scrap Heathkit W-5m for guitar amp?
  103. KT100...what's this ??
  104. Help measuring output impedience
  105. tubes
  106. Need PP KT-88 amp design and KT-88 for triode use?
  107. 7241 tube
  108. Max B+ for 807 UL?
  109. Fender amplifier.. burnt choke ??
  110. Problem with my Darling!
  111. Effect of cross-coupled "local" FB on plate load of previous stage
  112. wickedly awsome guitar amp
  113. DC coupled long tailed pairs
  114. I need an advice for these tubes..
  115. Anode Resistors on PPP Amps
  116. help with modifing a H/K A500 amp
  117. Damper Diode Musings
  118. Heater Question
  119. Push pull designs.
  120. Anybody heard about Tarzian Silicon Rectifier for Tube Rectifier Replacement?
  121. Voice of Music 555 phonograph
  122. Direct driving of GM70 by one ECL86 ???
  123. Bogen amp schematic
  124. 6336a
  125. Power transformer colors & wiring
  126. Stepped Attenuator and Selector Switch
  127. Music without speakers? Need help.
  128. el84 ultra linear datat sheet
  129. 2a3 layout
  130. Matisse Ref per amp
  131. Recommendations for Simple SET Amp Topologies
  132. HV power supply repair
  133. Grundig Model 3265U Restore?
  134. Valve Art EL 156!
  135. Classe A 6550 40W
  136. Lafayette Bypass Option
  137. Plate curves or Op Point for 6KN8?
  138. 12e1 sub for 807 ?
  139. Extremely low power and low loss transformers
  140. looking for power supply diagram SE 813 45 Watt
  141. How to make this 6C33C better??
  142. All octal 6AS7 PP amp is it possible?
  143. Toroids VS EI Transfomers
  144. Bias secrets for a HH Scott 233?!?
  145. new idea of DHT heater supply
  146. UL40-S2 schematic
  147. Eastern Audio transformers: any good?
  148. Tube monster amplifier
  149. Big pentode help!
  150. which one?
  151. system matching
  152. a 5ar4 problem
  153. coupling capacitor intermediate values
  154. Quicksilver Mono 60 upgrades
  155. Can anything be done
  156. OTL ECC88 amp
  157. Bridging Mono Blocks
  158. Cathode-coupled Phase Splitter Formula
  159. Drd 45, 300b
  160. SV572-30: Opinions?
  161. Poor man's transformer volume control?
  162. Output current of this CAT SL-1 schematic ?
  163. Fixed Bias Circuit for 300B
  164. want to build SE450TL
  165. Tubes lifetime and sound
  166. Heater supply problem?
  167. Lowering HV secondary on Power Transformer
  168. Van der Veen 70W tube Amp DIY
  169. 5751 for marantz 7 linestage
  170. To be or not to be, UL or quad?
  171. Tube Failure
  172. 12AX7 Compared!
  173. transformer case grounding
  174. pre/amplifier grounding
  175. First Time Amp
  176. 6ck4 pp amp
  177. JJ electros, any good?
  178. 6AQ5A guitar amp revisited
  179. fun with amps
  180. Newbie needs clarification
  181. looking for powerful Single Ended diagram.
  182. Power amp output newbie question
  183. SE ultralinear amplifier generate a lot of Odd harmonics ?
  184. Grounding Filament CT?
  185. one more 12B4A preamp
  186. 6V6PP -> 6L6 PP with triode connection.
  187. ? about powering a sub with a Fisher 30a mono amp.
  188. Will This Blow Up?
  189. Pin out conversion 6V6-6AQ5A
  190. 211
  191. Nice looking rectifier tubes help
  192. Stepped attenuator inquiry
  193. Designing a Phonostage with the S&B 10K LCR RIAA Module
  194. 211 tube
  195. The T-Rex SET Amplifier DIY project
  196. Strange Wiring in Bogen 6v6 PP
  197. 6AS7 amp schematics
  198. Blue glow confused :(
  199. 6V6 SE and Screen Grid Voltage
  200. 6BQ5 <-> 6V6 without socket job...Any Idea?
  201. Melbourne, Australia valve enthusiasts check in!
  202. HELP! Blown R + HIGH V!
  203. PCB Pad Layout for B9A Noval
  204. DIY tube amps - help??
  205. New home made S.E amps
  206. Amplifier Oscillation
  207. First project, need guidance
  208. Cap max value after 6X5GT/EZ35 rectifier?
  209. Any tube-heads in Scotland?
  210. Care and Feeding of Tube Pins / Sockets
  211. MFA Luminescence--need schematic
  212. Tube technology amplifier
  213. Transformer questions
  214. Siemens C3g headamp problem
  215. rca83 hash?
  216. Skyline SK-10 Amplifier info?
  217. Tube Stereo Consoles from Thrift Stores
  218. Aikido amp theoretical questions
  219. 6V6 Single and 12AT7 SRPP
  220. What 45 SET amp should I build?
  221. Ping. Burnedfingers...
  222. ? problem with www.ampwares.com ?
  223. Pentode spud...?
  224. Type 46 as voltage amplifier
  225. Tube compressor problem!
  226. Using the 83
  227. Organ amp project
  228. Any feedback on these trannies?
  229. 300B PP bias and expected life time
  230. Mono block restoration
  231. Question about cathode bypass capacitor
  232. www.diytube.com Kits
  233. need help!
  234. Need opinion on PS for tube preamp.
  235. Stanley Mullard
  236. 6AK4, Anyone?
  237. interstage transformer
  238. Are matched sets important for this amp?
  239. What to do with ECC88's?
  240. EL38's ?
  241. Cables/tubes for Valve Amp
  242. 8233 / E55L Applications
  243. amplimo budget outputtransformer
  244. Output Transformers for WE-437a WOT Line Preamp
  245. plate resistor, input lead
  246. KT88 PP with Class-A/Class-AB switch
  247. very loud preamp
  248. Pentode current sink
  249. Hammond vs. James?
  250. Tubes for Scott Nixon dac

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