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

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