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  1. Just a quicky
  2. Question on Mains Transformer
  3. Help! Who is the dirtributors of 6V4/EZ80 and 6H30/6N30?
  4. SE 6AS7 amp question
  5. Timed switch on B+ in power supply, good idea?
  6. Parts Sourcing
  7. Power Supply Question
  8. tube amp kits
  9. in search of a schematic
  10. heater wiring
  11. 5A/152M perfect driver? SPICE?
  12. 12AU7 -> 12BH7 Do I need to change Rp?
  13. Need help understanding transformer impedance ratios and impedance matching
  14. Audio schematics for GU50 ????
  15. 6sn7 & 6sn7GTB
  16. Tube amp schematic - any thoughts?
  17. tube distortion effect.
  18. tube rolling Blue Circle BC 21 preamp
  19. A sorry tale which will make you cry !!!
  20. Variac problems
  21. tubeamp project, weekend timekiller
  22. isolated supply grounding
  23. Car preamp with Aikido
  24. Audio Note M1 potentiometer question
  25. Beginner , tube kit suggestions please
  26. anyone ever used metalized polypropylene caps from Digi-key?
  27. Question on OPT
  28. Telefunken S80 Stereo ECL82 Amp- any comment?
  29. Active crossovers using Tubes
  30. 300BSE power amplifier circuit
  31. tube buffer using 12bz7
  32. "Complete" SE KT88
  33. Output Tube biasing for Toroidal Output Transformer
  34. Cardas Golden Capacitors
  35. Tube Buffer for CD-PRO2M (6922)
  36. Troubleshooting fuse blowing
  37. Billington valves and quallity
  38. Regulated PSU, your comments please.
  39. Change coupling cap from .47uf to 2.2uf
  40. RIAA Schematics?
  41. Line out for subwoofer in tube amps
  42. Feedback in IT coupled amps?
  43. Filemant Voltage
  44. DC compensated SE output transformer
  45. Winding an audio transformer
  46. Tube effects Loop Schematics... ?
  47. Scrap Heathkit W-5m for guitar amp?
  48. KT100...what's this ??
  49. Help measuring output impedience
  50. tubes
  51. Need PP KT-88 amp design and KT-88 for triode use?
  52. 7241 tube
  53. Max B+ for 807 UL?
  54. Fender amplifier.. burnt choke ??
  55. Problem with my Darling!
  56. Effect of cross-coupled "local" FB on plate load of previous stage
  57. wickedly awsome guitar amp
  58. DC coupled long tailed pairs
  59. I need an advice for these tubes..
  60. Anode Resistors on PPP Amps
  61. help with modifing a H/K A500 amp
  62. Damper Diode Musings
  63. Heater Question
  64. Push pull designs.
  65. Anybody heard about Tarzian Silicon Rectifier for Tube Rectifier Replacement?
  66. Voice of Music 555 phonograph
  67. Direct driving of GM70 by one ECL86 ???
  68. Bogen amp schematic
  69. 6336a
  70. Power transformer colors & wiring
  71. Stepped Attenuator and Selector Switch
  72. Music without speakers? Need help.
  73. el84 ultra linear datat sheet
  74. 2a3 layout
  75. Matisse Ref per amp
  76. Recommendations for Simple SET Amp Topologies
  77. HV power supply repair
  78. Grundig Model 3265U Restore?
  79. Valve Art EL 156!
  80. Classe A 6550 40W
  81. Lafayette Bypass Option
  82. Plate curves or Op Point for 6KN8?
  83. 12e1 sub for 807 ?
  84. Extremely low power and low loss transformers
  85. looking for power supply diagram SE 813 45 Watt
  86. How to make this 6C33C better??
  87. All octal 6AS7 PP amp is it possible?
  88. Toroids VS EI Transfomers
  89. Bias secrets for a HH Scott 233?!?
  90. new idea of DHT heater supply
  91. UL40-S2 schematic
  92. Eastern Audio transformers: any good?
  93. Tube monster amplifier
  94. Big pentode help!
  95. which one?
  96. system matching
  97. a 5ar4 problem
  98. coupling capacitor intermediate values
  99. Quicksilver Mono 60 upgrades
  100. Can anything be done
  101. OTL ECC88 amp
  102. Bridging Mono Blocks
  103. Cathode-coupled Phase Splitter Formula
  104. Drd 45, 300b
  105. SV572-30: Opinions?
  106. Poor man's transformer volume control?
  107. Output current of this CAT SL-1 schematic ?
  108. Fixed Bias Circuit for 300B
  109. want to build SE450TL
  110. Tubes lifetime and sound
  111. Heater supply problem?
  112. Lowering HV secondary on Power Transformer
  113. Van der Veen 70W tube Amp DIY
  114. 5751 for marantz 7 linestage
  115. To be or not to be, UL or quad?
  116. Tube Failure
  117. 12AX7 Compared!
  118. transformer case grounding
  119. pre/amplifier grounding
  120. First Time Amp
  121. 6ck4 pp amp
  122. JJ electros, any good?
  123. 6AQ5A guitar amp revisited
  124. fun with amps
  125. Newbie needs clarification
  126. looking for powerful Single Ended diagram.
  127. Power amp output newbie question
  128. SE ultralinear amplifier generate a lot of Odd harmonics ?
  129. Grounding Filament CT?
  130. one more 12B4A preamp
  131. 6V6PP -> 6L6 PP with triode connection.
  132. ? about powering a sub with a Fisher 30a mono amp.
  133. Will This Blow Up?
  134. Pin out conversion 6V6-6AQ5A
  135. 211
  136. Nice looking rectifier tubes help
  137. Stepped attenuator inquiry
  138. Designing a Phonostage with the S&B 10K LCR RIAA Module
  139. 211 tube
  140. The T-Rex SET Amplifier DIY project
  141. Strange Wiring in Bogen 6v6 PP
  142. 6AS7 amp schematics
  143. Blue glow confused :(
  144. 6V6 SE and Screen Grid Voltage
  145. 6BQ5 <-> 6V6 without socket job...Any Idea?
  146. Melbourne, Australia valve enthusiasts check in!
  147. HELP! Blown R + HIGH V!
  148. PCB Pad Layout for B9A Noval
  149. DIY tube amps - help??
  150. New home made S.E amps
  151. Amplifier Oscillation
  152. First project, need guidance
  153. Cap max value after 6X5GT/EZ35 rectifier?
  154. Any tube-heads in Scotland?
  155. Care and Feeding of Tube Pins / Sockets
  156. MFA Luminescence--need schematic
  157. Tube technology amplifier
  158. Transformer questions
  159. Siemens C3g headamp problem
  160. rca83 hash?
  161. Skyline SK-10 Amplifier info?
  162. Tube Stereo Consoles from Thrift Stores
  163. Aikido amp theoretical questions
  164. 6V6 Single and 12AT7 SRPP
  165. What 45 SET amp should I build?
  166. Ping. Burnedfingers...
  167. ? problem with www.ampwares.com ?
  168. Pentode spud...?
  169. Type 46 as voltage amplifier
  170. Tube compressor problem!
  171. Using the 83
  172. Organ amp project
  173. Any feedback on these trannies?
  174. 300B PP bias and expected life time
  175. Mono block restoration
  176. Question about cathode bypass capacitor
  177. www.diytube.com Kits
  178. need help!
  179. Need opinion on PS for tube preamp.
  180. Stanley Mullard
  181. 6AK4, Anyone?
  182. interstage transformer
  183. Are matched sets important for this amp?
  184. What to do with ECC88's?
  185. EL38's ?
  186. Cables/tubes for Valve Amp
  187. 8233 / E55L Applications
  188. amplimo budget outputtransformer
  189. Output Transformers for WE-437a WOT Line Preamp
  190. plate resistor, input lead
  191. KT88 PP with Class-A/Class-AB switch
  192. very loud preamp
  193. Pentode current sink
  194. Hammond vs. James?
  195. Tubes for Scott Nixon dac
  196. James SE OPT for 300B & 2A3 on eBay
  197. pre-amp with 6as7??
  198. pre-amp with voltage gain from transformer only
  199. Help! Mystery tube (?) amp (type: HK56)
  200. Regulate the high voltage making better sound? (Preamp)
  201. Power Transformer
  202. Potentiometers UK
  203. AC 120V, neutral, hot, ground
  204. Counterpoint SA-220 Tube section advice needed
  205. 807 Amp
  206. Help me to choose the adequate ferrites
  207. Looking for KT88 circuits.
  208. Building a power amp - help
  209. Sovtek EL34WXT.
  210. Microphonic
  211. preamp gain and output transformer question
  212. Would an s5 K-12M kit suffice?
  213. 6c45 and passive volume control?
  214. Something of Interest to Newbies
  215. Fender Output transformer as an audio amp part
  216. Chinese Tube Amp & DIY .. Pro & Con
  217. Franks Ultimate Preamp....
  218. Interstage Transformer Nomenclature
  219. PP or SE for Horns?
  220. Output transformer in SIMetrix?
  221. seampcad
  222. Looking for an amp project
  223. Unison Research Smart 845 schematics
  224. HELP - From the audiophile Heads - Amp Advice
  225. 8233, 8116 &amp; 6BZ6 valves - what are they good for?
  226. wires of output transformer are too thin!
  227. Reichert Feral Eye
  228. BIG LOUD SCREECH on LEFT channel only
  229. humming from volume
  230. Paia TubeHead and Symmetry Trims
  231. Output trafo for WE-91 L'Audiophile amp?
  232. Transformer voltage too high for 300B amp
  233. More shopping help please - GE Combo 330
  234. Bias filtering
  235. PP pentode screen supply
  236. 6v6 and OPT with 10-12k ohm(primary impedence)
  237. Identity Help - Is it worth working on
  238. Need info about 5G84 tube
  239. RF Noise in Power Supply
  240. My audionote Kit one have problem on 300B cathode terminal
  241. Partial Feedback Amplifiers
  242. filament transformer vs plate transformer
  243. Any subs for 6N1 & 6N2 twin triode valves?
  244. PSU questions
  245. Any designs for 6EJ7 out there?
  246. SRPP headphoneamp with E88CC
  247. newbie to DIY
  248. Just bought a leak stereo 20 (pics!)
  249. Mysterious Output Transformer....
  250. Hum free 5687 AC filament supply, is it possable ?

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