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  1. Small tube amp conversion help 6x4, 6AU6, 6AQ5
  2. Hybrid never see
  3. "Next to Last" PAS Project
  4. Power supply overload
  5. Home build 6L6 pp amp buzzing noise
  6. 807 monoblocks with big PSU
  7. SET amps and crossovers.....?
  8. Sockets for 6P41S
  9. 6dj8 phono amp
  10. Jolida Score!!!!
  11. voltage boost
  12. Swinging choke value in PSUD
  13. Hum Nirvana
  14. This weekend's reading
  15. 6550-6550A-6550B-6550C - What are exactly Differences ??
  16. Interstage Transformer Questions
  17. Vacuum State FVP5A voltages
  18. can you help me out? Sencore TC114 tube tester
  19. Steve Bench's tube crossover - Help needed.
  20. transformer design equations
  21. some misc schematics, manley, rotel
  22. What happened to my tube??
  23. Tube Preamp Question
  24. Schematic for Pilot SP215
  25. Screen current through cathode resistors
  26. Gyrator design
  27. Any tips for routing heaters on a PCB
  28. 6EZ5 as drop in replacement for 6V6 tube?
  29. RIAA Preamp and equalization 12AX7
  30. Correct hum mods?
  31. Push-Pull from Stereo SE amp
  32. how to select transformers.
  33. Ultrapath or parallel feed apps. for 7591 amps?
  34. PP-UL amp with KT88
  35. Reuse these sockets and tube choice question
  36. Need help understanding this circuit
  37. Need a little help with a power supply I designed.
  38. Which tube Rectifier is good enough for 5902 tube amp ?
  39. Schematic for Masco ME-8?
  40. Transformer Rattle & Hum issue - Dynakit ST-70
  41. pio coupling caps - damaged/used?
  42. 6EZ8 (and other triple triodes) help please!
  43. Akron, Ohio
  44. 6N6P Heater and earth wiring advice
  45. united transformer corporation
  46. Capacitive v. Inductive inter-stage coupling
  47. unused secondaries on SE opt?
  48. Marco Rodint coil building info needed
  49. Scott 222B Hum
  50. how to make audio output transformer
  51. 5842 Anyone?
  52. 813 SE build
  53. Aikido LV improved psu
  54. My first HiFi project
  55. B&O 608 tube amplifier
  56. Just designed a 300b amplifier....
  57. Anyone used C3g to drive GM70?
  58. Capacitors found, have you used these?
  59. I need your help!!!!!
  60. 12au7 600 ohm output
  61. new C3g/211PSE comments pls
  62. anyone know of a source for 12 pin+ connectors?
  63. Dynaco Mark IV Power Resistor
  64. Moondog with ac on gain & driver tubes?
  65. need help again on DIY Toccata MC Phono preamp
  66. Looking for analog Tube schematic for "analogmetric 1541a" DAC
  67. newbie needs help with tube inheritance
  68. 2A3 SETs with Edcor Iron
  69. What to do with this iron (originally from PP 7355)
  70. Just for everyone's amusement....
  71. beam tetrode calculations
  72. What are the differences between LC and CLC chokes
  73. gain and mid circuits
  74. Kay 503 Schematics?
  75. Transformer Data
  76. tube B 406 triode dick's cleo 4
  77. GE Snubber, High Current DC, and Switching Capacitors
  78. Russian EL84 - Many varieties
  79. Back From the Dead- A NOS Tube Story
  80. application for ccs/gyrator board from the groupbuy
  81. Building a tube radio
  82. Three more articles for the WW Archive
  83. Amplifier antics
  84. what about a tube makes it UL recommended
  85. 6as7 p-p with transformer phase-splitter
  86. Large power push pull output transformers, say 150W
  87. I need a schematic for a amp project
  88. Preamp resistors calculation for http://www.shine7.com
  89. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  90. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  91. Vintage tubes
  92. Amp PSU standby and PA switching
  93. 245 tubes
  94. Vacuum tube clock radio
  95. First Project, need some help
  96. Graetz Scerzo Schematic
  97. simple se 2a3 amp help!!!!!
  98. 5bc3 rectifier
  99. Help me improve this PSU. (6c33 set, voltage doubler)
  100. Choke Loaded Driver Load Lines Question
  101. CCS and tube aging
  102. Tetra lives!!!!!
  103. Tube shops/supplies in Brisbane/Gold Coast
  104. AC VT25 filament?
  105. Let's show go on: Building Monster SE!
  106. Mystery 6AQ5A powered chassis?
  107. 6Y6G tube for low-voltage SE amplifier?
  108. Jolida gain and negative feedback?
  109. 1/2 of the tube for each channel?
  110. Problem with Legacy pentode driver stage
  111. 845 Operating Point
  112. Tube rectifiers
  113. D76 Inrush current limiter thermistor?
  114. New to Tubes? How to get the basics, read on..
  115. interstage tansformer impedence
  116. 2 PSU sharing the same Power transformer?
  117. Biasing amp
  118. CCS placement
  119. clueless on console
  120. Popping in stepped volume control
  121. 6by5 CRC Values
  122. Is this do-able?
  123. PCB for Gary Pimm's CCS & SS Pentode
  124. EL86 Single Ended PP Power Amplifier
  125. Diyhifisupply Billies - dead OPTs?
  126. 6H30P-DR
  127. Tube AMP and stax headphones....
  128. soft start power supply for dynaco st-70
  129. The Telefunken EF86?
  130. Can you run parallel circuits from a rectifier?
  131. Mullard 5-20 with 6L6GC's?
  132. Adding balanced input to 6N1P tube.
  133. Partial feedback (anode grid) with cathode follower
  134. 4P1L as First gain stage or in Pre-Amp..?
  135. Advice on 6418 design requested
  136. Shorting jumpers for octal sockets
  137. Tube lineup in an Admiral y4302
  138. John Broskie MIA?
  139. Audio Research VT 100 MKII need help!!
  140. Help with AD30 PSU build
  141. Who was the Japanese Amp Guru?
  142. 6922 vs an ECC82.....a test.
  143. Triode connected 6LW6 for SE
  144. 12AD7???
  145. New Book Review
  146. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  147. looking for hi volt commercial power supplies
  148. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  149. ECC85
  150. Pioneer 304B fm/am reciever schematic
  151. ECC82 JJ Made in Slovak Republic!?
  152. Definition of matched
  153. Polycarbonate as coupling caps?
  154. pick tubes for tubecad unbalancer
  155. OPT for EL34
  156. 12v dc tube amp/pre high SQ
  157. Better than 12au7?
  158. Amps and 4-ohm loads
  159. What is the "best" tube amp / speaker / source you have ever used?
  160. 814 as Triode / Max. Ug2 voltage
  161. valves better than solid state?
  162. musical fidelity x10d clone
  163. Acrosound 7591A amp
  164. suggestions for simple amp wanted
  165. Wish you could nail down your copper wool holder?
  166. HELP- Pricing Genuine Genalex KT77's
  167. K120 on 6550/KT88/KT90 anyone tried???
  168. do tubes ever leak b+ into heaters?
  169. How can I use these high-current, low-inductance chokes?
  170. 6005w Q+introduction
  171. Sonic Frontiers Line 3 Increate the Output Voltage
  172. Dynaco ST-70 chassis
  173. Opinion on the scheme with the 12AX7!
  174. Fully Parametric Tube EQ (with gyrators)
  175. 600v snap-in electrolytics
  176. anyone knows of 6 channel tube amplier ?
  177. 6N6P SE idea
  178. EL84
  179. Long tails and current sources
  180. How to reduce gain in mu-follower?
  181. Single Ended Amplifier 6P43P
  182. 6C33C spacing
  183. A very excitable Luminescence
  184. KT-88 Data sheet question.
  185. Good 12ax7
  186. Operating points theory...
  187. 1-stage (killer, literally) amp made of junk
  188. What should clipping look like? (AKA reading sine waves)
  189. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  190. 845 with kathode bias
  191. Looking for EI-75 80% perm ...
  192. Ambient temperature target
  193. Old radio
  194. JJ glowing twice as bright
  195. DPA150
  196. Discharging a capacitor - should I??
  197. German transformer builder
  198. 6P30B-V subminiature tube
  199. Improved Tube Headphones Amp
  200. Best method of reducing line voltage into vintage transformers?
  201. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  202. hum measurement
  203. DIY 450VA+ multi-tapped tube power trafo
  204. DIY 450VA+ multi-tapped tube power trafo
  205. Duelund Alexander Copper Foil Capacitors
  206. Yaqin MS-20L tube recommendation
  207. Tube version of aleph-x. Is it possible?
  208. help - Looking for specs Trimax TA1439
  209. Mono 5W-17W Power Amp using EL84 push-pull
  210. Reference Books
  211. Tresco?
  212. BELL 3DT, Phono RIAA Odditty
  213. 6SL7/6V6 tubes in an RH84 SE amplifier?
  214. How to calculate max voltage swing in cathode follower?
  215. Silvaweld OTL Tube Reference 100 schematics
  216. Unison Research SMART 845
  217. 26/45 SE amp ?
  218. Sweep Tube SEP
  219. Help me find cirquit, I forgot where I last saw it?
  220. Plate resistor for FVP5a
  221. Simulation
  222. DHT w/ DC heater - How to rig cathode bias?
  223. schematics needed- Luxman MQ70
  224. CSS for 6c33?
  225. Svetlana (Winged C) 6L6GC vs. the Others...
  226. Power Supply Help- 807's, High Voltage
  227. Looking for info about a 1940s Amp
  228. More amplifiers in the Wireless World Archive
  229. why does my amp require a preamp?
  230. Why two GZ34 in this schematic?
  231. Floating Dc heaters, capacitor to ground
  232. anyone have experience with 1J17B tube
  233. Preventing arcing on standby switch?
  234. Help with buzzing mains transformer
  235. Balanced Amp Topology
  236. ECC33
  237. Distortion spectrum vs feedback
  238. Heaters question
  239. what's my fisher 400 off gassing?
  240. Executone schematic needed
  241. parafeed output amplifier
  242. CCCP SUBTUBE: my last project
  243. Aikido Line-Stage jumper question
  244. Tube Amplifier to power Gale GS401 speakers
  245. Bypass Cap on cathode?
  246. How to measure/calculate dB of negative feedback?
  247. Need your advices & experiences
  248. Parmeko gresham transformers specifications
  249. Valve cascodes for Phono input.
  250. ST-70 XLR Balanced Driver Boad

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