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  1. Amplifier antics
  2. what about a tube makes it UL recommended
  3. 6as7 p-p with transformer phase-splitter
  4. Large power push pull output transformers, say 150W
  5. I need a schematic for a amp project
  6. Preamp resistors calculation for http://www.shine7.com
  7. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  8. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  9. Vintage tubes
  10. Amp PSU standby and PA switching
  11. 245 tubes
  12. Vacuum tube clock radio
  13. First Project, need some help
  14. Graetz Scerzo Schematic
  15. simple se 2a3 amp help!!!!!
  16. 5bc3 rectifier
  17. Help me improve this PSU. (6c33 set, voltage doubler)
  18. Choke Loaded Driver Load Lines Question
  19. CCS and tube aging
  20. Tetra lives!!!!!
  21. Tube shops/supplies in Brisbane/Gold Coast
  22. AC VT25 filament?
  23. Let's show go on: Building Monster SE!
  24. Mystery 6AQ5A powered chassis?
  25. 6Y6G tube for low-voltage SE amplifier?
  26. Jolida gain and negative feedback?
  27. 1/2 of the tube for each channel?
  28. Problem with Legacy pentode driver stage
  29. 845 Operating Point
  30. Tube rectifiers
  31. D76 Inrush current limiter thermistor?
  32. New to Tubes? How to get the basics, read on..
  33. interstage tansformer impedence
  34. 2 PSU sharing the same Power transformer?
  35. Biasing amp
  36. CCS placement
  37. clueless on console
  38. 5E3 Build Problems Cont'd
  39. Popping in stepped volume control
  40. 6by5 CRC Values
  41. Is this do-able?
  42. PCB for Gary Pimm's CCS & SS Pentode
  43. EL86 Single Ended PP Power Amplifier
  44. Diyhifisupply Billies - dead OPTs?
  45. 6H30P-DR
  46. Tube AMP and stax headphones....
  47. soft start power supply for dynaco st-70
  48. The Telefunken EF86?
  49. Can you run parallel circuits from a rectifier?
  50. Mullard 5-20 with 6L6GC's?
  51. Adding balanced input to 6N1P tube.
  52. Partial feedback (anode grid) with cathode follower
  53. 4P1L as First gain stage or in Pre-Amp..?
  54. Advice on 6418 design requested
  55. Shorting jumpers for octal sockets
  56. Tube lineup in an Admiral y4302
  57. John Broskie MIA?
  58. Audio Research VT 100 MKII need help!!
  59. Help with AD30 PSU build
  60. Who was the Japanese Amp Guru?
  61. 6922 vs an ECC82.....a test.
  62. Triode connected 6LW6 for SE
  63. 12AD7???
  64. New Book Review
  65. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  66. looking for hi volt commercial power supplies
  67. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  68. ECC85
  69. Pioneer 304B fm/am reciever schematic
  70. ECC82 JJ Made in Slovak Republic!?
  71. Definition of matched
  72. Polycarbonate as coupling caps?
  73. pick tubes for tubecad unbalancer
  74. OPT for EL34
  75. 12v dc tube amp/pre high SQ
  76. Better than 12au7?
  77. Amps and 4-ohm loads
  78. What is the "best" tube amp / speaker / source you have ever used?
  79. 814 as Triode / Max. Ug2 voltage
  80. valves better than solid state?
  81. musical fidelity x10d clone
  82. Acrosound 7591A amp
  83. suggestions for simple amp wanted
  84. Wish you could nail down your copper wool holder?
  85. HELP- Pricing Genuine Genalex KT77's
  86. K120 on 6550/KT88/KT90 anyone tried???
  87. do tubes ever leak b+ into heaters?
  88. How can I use these high-current, low-inductance chokes?
  89. 6005w Q+introduction
  90. Sonic Frontiers Line 3 Increate the Output Voltage
  91. Dynaco ST-70 chassis
  92. Opinion on the scheme with the 12AX7!
  93. Fully Parametric Tube EQ (with gyrators)
  94. 600v snap-in electrolytics
  95. anyone knows of 6 channel tube amplier ?
  96. 6N6P SE idea
  97. EL84
  98. Long tails and current sources
  99. How to reduce gain in mu-follower?
  100. Chassis
  101. Single Ended Amplifier 6P43P
  102. 6C33C spacing
  103. A very excitable Luminescence
  104. KT-88 Data sheet question.
  105. Good 12ax7
  106. Operating points theory...
  107. 1-stage (killer, literally) amp made of junk
  108. Two bridges and a CT transformer....
  109. What should clipping look like? (AKA reading sine waves)
  110. Combining coupling cap's
  111. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  112. 845 with kathode bias
  113. Mixing Resistor types?
  114. Looking for EI-75 80% perm ...
  115. Ambient temperature target
  116. Old radio
  117. JJ glowing twice as bright
  118. DPA150
  119. Discharging a capacitor - should I??
  120. German transformer builder
  121. 6P30B-V subminiature tube
  122. Improved Tube Headphones Amp
  123. Best method of reducing line voltage into vintage transformers?
  124. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  125. hum measurement
  126. DIY 450VA+ multi-tapped tube power trafo
  127. DIY 450VA+ multi-tapped tube power trafo
  128. Duelund Alexander Copper Foil Capacitors
  129. Yaqin MS-20L tube recommendation
  130. Tube version of aleph-x. Is it possible?
  131. help - Looking for specs Trimax TA1439
  132. where can i get transformers in the UK?
  133. Mono 5W-17W Power Amp using EL84 push-pull
  134. Reference Books
  135. Tresco?
  136. BELL 3DT, Phono RIAA Odditty
  137. 6SL7/6V6 tubes in an RH84 SE amplifier?
  138. How to calculate max voltage swing in cathode follower?
  139. Power Transformer Temp
  140. Silvaweld OTL Tube Reference 100 schematics
  141. Need suggestion for 6.3V-0-6.3V
  142. Unison Research SMART 845
  143. 26/45 SE amp ?
  144. V2 rocket guidance system.
  145. Sweep Tube SEP
  146. Help me find cirquit, I forgot where I last saw it?
  147. Passive or Active? For Wet/Dry mix on valve driven reverb.
  148. Plate resistor for FVP5a
  149. Simulation
  150. DHT w/ DC heater - How to rig cathode bias?
  151. schematics needed- Luxman MQ70
  152. CSS for 6c33?
  153. Svetlana (Winged C) 6L6GC vs. the Others...
  154. Power Supply Help- 807's, High Voltage
  155. Looking for info about a 1940s Amp
  156. More amplifiers in the Wireless World Archive
  157. why does my amp require a preamp?
  158. Why two GZ34 in this schematic?
  159. Floating Dc heaters, capacitor to ground
  160. anyone have experience with 1J17B tube
  161. Preventing arcing on standby switch?
  162. Help with buzzing mains transformer
  163. Balanced Amp Topology
  164. ECC33
  165. Distortion spectrum vs feedback
  166. Heaters question
  167. Why do transformers have such*&%#* hardware?
  168. what's my fisher 400 off gassing?
  169. Executone schematic needed
  170. parafeed output amplifier
  171. B+K 500 Testor Question
  172. CCCP SUBTUBE: my last project
  173. Aikido Line-Stage jumper question
  174. Tube Amplifier to power Gale GS401 speakers
  175. Bypass Cap on cathode?
  176. How to measure/calculate dB of negative feedback?
  177. Need your advices & experiences
  178. Parmeko gresham transformers specifications
  179. Valve cascodes for Phono input.
  180. ST-70 XLR Balanced Driver Boad
  181. I'm new here any places for like us newbies?
  182. Noob looking for some advice
  183. Stand Alone guitar power amp for evaluation
  184. QQE04/5 Curves
  185. Help on Audio Research D79A adjustment
  186. lazarus preamp hums even with volume down and no components connected.
  187. Troubles when elevating a LT supply
  188. Turning up the heat: cathode bias
  189. Anyone build Dynaco Mk IIIs with Sullivan boards?
  190. Lowering gain on Frank's 6SN7 preamp
  191. Pro amp input modification
  192. Sanity of compactron for "integrated" headphone amp?
  193. vdc drop
  194. HELP - SMART 845 or 300B SE
  195. DC Servo - Direct Coupling Applications?
  196. Edison 12 amplifier
  197. Mounting terminal strips to blank copper board
  198. 6C33C tube socket for GM70 tube??
  199. Fisher X100C 2 sets speakers?
  200. 4P1L DHT Line Stage
  201. Trying to identify an old radio tube
  202. Yaqin CD3 upgrading caps help for novice
  203. push pull adjustable fixed bias
  204. Another SE amp design.
  205. Chassis to experiment with....
  206. Ray Butts Echosonic #27
  207. Ampeg Reverberocket II Hum
  208. What coupling capacitor values are common
  209. Yamamoto A-09s
  210. 9001 variant of Acorn 954 Pentode
  211. Khron-Hite UHR220 tube power source
  212. Grounding the 4ohm tap
  213. Rectifier mechanical buzz
  214. Informed opinion(s) on phase inversion?
  215. Computer grade electrolytics
  216. Strange problem with Grundig CS200 tube receiver
  217. Puresound P10 RIAA
  218. Need help on DIY Toccata Phono Preamp
  219. Single 6EB8 tube kit?
  220. SE OPT as PS choke
  221. Best input DHT tube?
  222. Stainless Steel Chassis Polishing
  223. Hm, which order to replace 2 out of 4 tubes?
  224. EL34 Musical Machine Output XFMR suggestions
  225. Driver stage to finals newbie questions - (I hope not dumb questions)
  226. Preamp with single 12ax7 Ecc83 for stereo?
  227. Ming-Da MC-300B845 schematic needed
  228. My RH84 Build - first amp after a 25 year break -:)
  229. Jolida 502a Snubber Mod
  230. Again
  231. KT120, PSE
  232. 6v6 bias with cathodyne
  233. How did the "magic eye" work on old valve radios ?
  234. High voltage switching
  235. High voltage switching
  236. EF184 as ccs / design questions / spice model
  237. ECC807
  238. Chassis thickness
  239. Compactron 6C10 & 6Q11/6K11 tube data
  240. Output voltage guitar preamp
  241. Reverse Engineering leads from Tube amp
  242. Did you all see this??
  243. WESTREX 60 WATT AMP
  244. Johari's audio system
  245. el95 single ended amp project needs help with preamp
  246. SS Rectifers and Zero-Crossing Distortion, possible fix or idotic idea?
  247. 3 ways active crossover
  248. 5691 tube tonal balance
  249. Dynaco Mark III chassis
  250. variac - breadboard with choke input

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