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  1. 1AX7
  2. 2 x 6as7 -> u=?
  3. Help with transformer
  4. Building a mu-follower stage
  5. ecl11 - ecl86 replacement
  6. Please comment on this grounding scheme.
  7. A tube-preamp with DSP-DAC-Touchscreen-and Music Streaming...
  8. Microphone modification help
  9. Microphone modification help
  10. First time hearing an SET
  11. Rattle can a power transformer
  12. Need better RIAA circuit for my phono amp.
  13. Input volume pot wiring
  14. Constant current heating undervoltage
  15. Some tube info that I hope is helpful
  16. Toroidal output transormers
  17. cathode bypass on opt secondary
  18. Push Pull Powersupply Test Question?
  19. Recommandation please..
  20. My new humble thread
  21. KT88 single stage pp - cascode diff amp
  22. foot switch safety question
  23. Which KT88 Brand to Buy?Sso many to choose
  24. 12ax7 perfect bias point
  25. preamplifier/driver for 807
  26. Help with Quad II hum
  27. 18K audio note output transformer
  28. Small tube amp conversion help 6x4, 6AU6, 6AQ5
  29. Hybrid never see
  30. "Next to Last" PAS Project
  31. Power supply overload
  32. Home build 6L6 pp amp buzzing noise
  33. 807 monoblocks with big PSU
  34. SET amps and crossovers.....?
  35. Sockets for 6P41S
  36. 6dj8 phono amp
  37. Jolida Score!!!!
  38. voltage boost
  39. Swinging choke value in PSUD
  40. Hum Nirvana
  41. This weekend's reading
  42. 6550-6550A-6550B-6550C - What are exactly Differences ??
  43. Interstage Transformer Questions
  44. Vacuum State FVP5A voltages
  45. can you help me out? Sencore TC114 tube tester
  46. Steve Bench's tube crossover - Help needed.
  47. transformer design equations
  48. some misc schematics, manley, rotel
  49. What happened to my tube??
  50. Tube Preamp Question
  51. Schematic for Pilot SP215
  52. Screen current through cathode resistors
  53. Gyrator design
  54. Any tips for routing heaters on a PCB
  55. 6EZ5 as drop in replacement for 6V6 tube?
  56. RIAA Preamp and equalization 12AX7
  57. Correct hum mods?
  58. Push-Pull from Stereo SE amp
  59. how to select transformers.
  60. Ultrapath or parallel feed apps. for 7591 amps?
  61. PP-UL amp with KT88
  62. Reuse these sockets and tube choice question
  63. Need help understanding this circuit
  64. Need a little help with a power supply I designed.
  65. Which tube Rectifier is good enough for 5902 tube amp ?
  66. Schematic for Masco ME-8?
  67. Transformer Rattle & Hum issue - Dynakit ST-70
  68. 6EZ8 (and other triple triodes) help please!
  69. Akron, Ohio
  70. 6N6P Heater and earth wiring advice
  71. united transformer corporation
  72. Capacitive v. Inductive inter-stage coupling
  73. unused secondaries on SE opt?
  74. Marco Rodint coil building info needed
  75. Scott 222B Hum
  76. how to make audio output transformer
  77. 5842 Anyone?
  78. 813 SE build
  79. Aikido LV improved psu
  80. My first HiFi project
  81. B&O 608 tube amplifier
  82. Just designed a 300b amplifier....
  83. Anyone used C3g to drive GM70?
  84. Capacitors found, have you used these?
  85. I need your help!!!!!
  86. 12au7 600 ohm output
  87. new C3g/211PSE comments pls
  88. anyone know of a source for 12 pin+ connectors?
  89. Dynaco Mark IV Power Resistor
  90. Moondog with ac on gain & driver tubes?
  91. need help again on DIY Toccata MC Phono preamp
  92. Looking for analog Tube schematic for "analogmetric 1541a" DAC
  93. newbie needs help with tube inheritance
  94. 2A3 SETs with Edcor Iron
  95. What to do with this iron (originally from PP 7355)
  96. Just for everyone's amusement....
  97. beam tetrode calculations
  98. What are the differences between LC and CLC chokes
  99. gain and mid circuits
  100. Kay 503 Schematics?
  101. Transformer Data
  102. tube B 406 triode dick's cleo 4
  103. GE Snubber, High Current DC, and Switching Capacitors
  104. Russian EL84 - Many varieties
  105. Back From the Dead- A NOS Tube Story
  106. application for ccs/gyrator board from the groupbuy
  107. Building a tube radio
  108. Three more articles for the WW Archive
  109. Amplifier antics
  110. what about a tube makes it UL recommended
  111. 6as7 p-p with transformer phase-splitter
  112. Large power push pull output transformers, say 150W
  113. I need a schematic for a amp project
  114. Preamp resistors calculation for http://www.shine7.com
  115. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  116. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  117. Vintage tubes
  118. Amp PSU standby and PA switching
  119. 245 tubes
  120. Vacuum tube clock radio
  121. First Project, need some help
  122. Graetz Scerzo Schematic
  123. simple se 2a3 amp help!!!!!
  124. 5bc3 rectifier
  125. Help me improve this PSU. (6c33 set, voltage doubler)
  126. Choke Loaded Driver Load Lines Question
  127. CCS and tube aging
  128. Tetra lives!!!!!
  129. Tube shops/supplies in Brisbane/Gold Coast
  130. AC VT25 filament?
  131. Let's show go on: Building Monster SE!
  132. Mystery 6AQ5A powered chassis?
  133. 6Y6G tube for low-voltage SE amplifier?
  134. Jolida gain and negative feedback?
  135. 1/2 of the tube for each channel?
  136. Problem with Legacy pentode driver stage
  137. 845 Operating Point
  138. Tube rectifiers
  139. D76 Inrush current limiter thermistor?
  140. New to Tubes? How to get the basics, read on..
  141. interstage tansformer impedence
  142. 2 PSU sharing the same Power transformer?
  143. Biasing amp
  144. CCS placement
  145. clueless on console
  146. Popping in stepped volume control
  147. 6by5 CRC Values
  148. Is this do-able?
  149. PCB for Gary Pimm's CCS & SS Pentode
  150. EL86 Single Ended PP Power Amplifier
  151. Diyhifisupply Billies - dead OPTs?
  152. 6H30P-DR
  153. Tube AMP and stax headphones....
  154. soft start power supply for dynaco st-70
  155. The Telefunken EF86?
  156. Can you run parallel circuits from a rectifier?
  157. Mullard 5-20 with 6L6GC's?
  158. Adding balanced input to 6N1P tube.
  159. Partial feedback (anode grid) with cathode follower
  160. 4P1L as First gain stage or in Pre-Amp..?
  161. Advice on 6418 design requested
  162. Shorting jumpers for octal sockets
  163. Tube lineup in an Admiral y4302
  164. John Broskie MIA?
  165. Audio Research VT 100 MKII need help!!
  166. Help with AD30 PSU build
  167. Who was the Japanese Amp Guru?
  168. 6922 vs an ECC82.....a test.
  169. Triode connected 6LW6 for SE
  170. 12AD7???
  171. New Book Review
  172. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  173. looking for hi volt commercial power supplies
  174. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  175. ECC85
  176. Pioneer 304B fm/am reciever schematic
  177. ECC82 JJ Made in Slovak Republic!?
  178. Definition of matched
  179. pick tubes for tubecad unbalancer
  180. OPT for EL34
  181. 12v dc tube amp/pre high SQ
  182. Better than 12au7?
  183. Amps and 4-ohm loads
  184. What is the "best" tube amp / speaker / source you have ever used?
  185. 814 as Triode / Max. Ug2 voltage
  186. valves better than solid state?
  187. musical fidelity x10d clone
  188. Acrosound 7591A amp
  189. suggestions for simple amp wanted
  190. Wish you could nail down your copper wool holder?
  191. HELP- Pricing Genuine Genalex KT77's
  192. K120 on 6550/KT88/KT90 anyone tried???
  193. do tubes ever leak b+ into heaters?
  194. How can I use these high-current, low-inductance chokes?
  195. 6005w Q+introduction
  196. Sonic Frontiers Line 3 Increate the Output Voltage
  197. Dynaco ST-70 chassis
  198. Opinion on the scheme with the 12AX7!
  199. Fully Parametric Tube EQ (with gyrators)
  200. 600v snap-in electrolytics
  201. anyone knows of 6 channel tube amplier ?
  202. 6N6P SE idea
  203. EL84
  204. Long tails and current sources
  205. How to reduce gain in mu-follower?
  206. Single Ended Amplifier 6P43P
  207. 6C33C spacing
  208. A very excitable Luminescence
  209. KT-88 Data sheet question.
  210. Good 12ax7
  211. Operating points theory...
  212. 1-stage (killer, literally) amp made of junk
  213. What should clipping look like? (AKA reading sine waves)
  214. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  215. 845 with kathode bias
  216. Looking for EI-75 80% perm ...
  217. Ambient temperature target
  218. Old radio
  219. JJ glowing twice as bright
  220. DPA150
  221. Discharging a capacitor - should I??
  222. German transformer builder
  223. 6P30B-V subminiature tube
  224. Improved Tube Headphones Amp
  225. Best method of reducing line voltage into vintage transformers?
  226. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  227. hum measurement
  228. DIY 450VA+ multi-tapped tube power trafo
  229. DIY 450VA+ multi-tapped tube power trafo
  230. Duelund Alexander Copper Foil Capacitors
  231. Yaqin MS-20L tube recommendation
  232. Tube version of aleph-x. Is it possible?
  233. help - Looking for specs Trimax TA1439
  234. Mono 5W-17W Power Amp using EL84 push-pull
  235. Reference Books
  236. Tresco?
  237. BELL 3DT, Phono RIAA Odditty
  238. 6SL7/6V6 tubes in an RH84 SE amplifier?
  239. How to calculate max voltage swing in cathode follower?
  240. Silvaweld OTL Tube Reference 100 schematics
  241. Unison Research SMART 845
  242. 26/45 SE amp ?
  243. Sweep Tube SEP
  244. Help me find cirquit, I forgot where I last saw it?
  245. Plate resistor for FVP5a
  246. Simulation
  247. DHT w/ DC heater - How to rig cathode bias?
  248. schematics needed- Luxman MQ70
  249. CSS for 6c33?
  250. Svetlana (Winged C) 6L6GC vs. the Others...

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