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  1. looking for hi volt commercial power supplies
  2. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  3. ECC85
  4. Pioneer 304B fm/am reciever schematic
  5. ECC82 JJ Made in Slovak Republic!?
  6. Definition of matched
  7. Polycarbonate as coupling caps?
  8. pick tubes for tubecad unbalancer
  9. OPT for EL34
  10. 12v dc tube amp/pre high SQ
  11. Better than 12au7?
  12. Amps and 4-ohm loads
  13. What is the "best" tube amp / speaker / source you have ever used?
  14. 814 as Triode / Max. Ug2 voltage
  15. valves better than solid state?
  16. musical fidelity x10d clone
  17. Acrosound 7591A amp
  18. suggestions for simple amp wanted
  19. Wish you could nail down your copper wool holder?
  20. HELP- Pricing Genuine Genalex KT77's
  21. K120 on 6550/KT88/KT90 anyone tried???
  22. do tubes ever leak b+ into heaters?
  23. How can I use these high-current, low-inductance chokes?
  24. 6005w Q+introduction
  25. Sonic Frontiers Line 3 Increate the Output Voltage
  26. Dynaco ST-70 chassis
  27. Opinion on the scheme with the 12AX7!
  28. Fully Parametric Tube EQ (with gyrators)
  29. 600v snap-in electrolytics
  30. anyone knows of 6 channel tube amplier ?
  31. 6N6P SE idea
  32. EL84
  33. Long tails and current sources
  34. How to reduce gain in mu-follower?
  35. Chassis
  36. Single Ended Amplifier 6P43P
  37. 6C33C spacing
  38. A very excitable Luminescence
  39. KT-88 Data sheet question.
  40. Good 12ax7
  41. Operating points theory...
  42. 1-stage (killer, literally) amp made of junk
  43. Two bridges and a CT transformer....
  44. What should clipping look like? (AKA reading sine waves)
  45. Combining coupling cap's
  46. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  47. 845 with kathode bias
  48. Mixing Resistor types?
  49. Looking for EI-75 80% perm ...
  50. Ambient temperature target
  51. Old radio
  52. JJ glowing twice as bright
  53. DPA150
  54. Discharging a capacitor - should I??
  55. German transformer builder
  56. 6P30B-V subminiature tube
  57. Improved Tube Headphones Amp
  58. Best method of reducing line voltage into vintage transformers?
  59. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  60. hum measurement
  61. DIY 450VA+ multi-tapped tube power trafo
  62. DIY 450VA+ multi-tapped tube power trafo
  63. Duelund Alexander Copper Foil Capacitors
  64. Yaqin MS-20L tube recommendation
  65. Tube version of aleph-x. Is it possible?
  66. help - Looking for specs Trimax TA1439
  67. where can i get transformers in the UK?
  68. Mono 5W-17W Power Amp using EL84 push-pull
  69. Reference Books
  70. Tresco?
  71. BELL 3DT, Phono RIAA Odditty
  72. 6SL7/6V6 tubes in an RH84 SE amplifier?
  73. How to calculate max voltage swing in cathode follower?
  74. Power Transformer Temp
  75. Silvaweld OTL Tube Reference 100 schematics
  76. Need suggestion for 6.3V-0-6.3V
  77. Unison Research SMART 845
  78. 26/45 SE amp ?
  79. V2 rocket guidance system.
  80. Sweep Tube SEP
  81. Help me find cirquit, I forgot where I last saw it?
  82. Passive or Active? For Wet/Dry mix on valve driven reverb.
  83. Plate resistor for FVP5a
  84. Simulation
  85. DHT w/ DC heater - How to rig cathode bias?
  86. schematics needed- Luxman MQ70
  87. CSS for 6c33?
  88. Svetlana (Winged C) 6L6GC vs. the Others...
  89. Power Supply Help- 807's, High Voltage
  90. Looking for info about a 1940s Amp
  91. More amplifiers in the Wireless World Archive
  92. why does my amp require a preamp?
  93. Why two GZ34 in this schematic?
  94. Floating Dc heaters, capacitor to ground
  95. anyone have experience with 1J17B tube
  96. Preventing arcing on standby switch?
  97. Help with buzzing mains transformer
  98. Balanced Amp Topology
  99. ECC33
  100. Distortion spectrum vs feedback
  101. Heaters question
  102. Why do transformers have such*&%#* hardware?
  103. what's my fisher 400 off gassing?
  104. Executone schematic needed
  105. parafeed output amplifier
  106. B+K 500 Testor Question
  107. CCCP SUBTUBE: my last project
  108. Aikido Line-Stage jumper question
  109. Tube Amplifier to power Gale GS401 speakers
  110. Bypass Cap on cathode?
  111. How to measure/calculate dB of negative feedback?
  112. Need your advices & experiences
  113. Parmeko gresham transformers specifications
  114. Valve cascodes for Phono input.
  115. ST-70 XLR Balanced Driver Boad
  116. I'm new here any places for like us newbies?
  117. Noob looking for some advice
  118. Stand Alone guitar power amp for evaluation
  119. QQE04/5 Curves
  120. Help on Audio Research D79A adjustment
  121. lazarus preamp hums even with volume down and no components connected.
  122. Troubles when elevating a LT supply
  123. Turning up the heat: cathode bias
  124. Anyone build Dynaco Mk IIIs with Sullivan boards?
  125. Lowering gain on Frank's 6SN7 preamp
  126. Pro amp input modification
  127. Sanity of compactron for "integrated" headphone amp?
  128. vdc drop
  129. HELP - SMART 845 or 300B SE
  130. DC Servo - Direct Coupling Applications?
  131. Edison 12 amplifier
  132. Mounting terminal strips to blank copper board
  133. 6C33C tube socket for GM70 tube??
  134. Fisher X100C 2 sets speakers?
  135. 4P1L DHT Line Stage
  136. Trying to identify an old radio tube
  137. Yaqin CD3 upgrading caps help for novice
  138. push pull adjustable fixed bias
  139. Another SE amp design.
  140. Chassis to experiment with....
  141. Ray Butts Echosonic #27
  142. Ampeg Reverberocket II Hum
  143. What coupling capacitor values are common
  144. Yamamoto A-09s
  145. 9001 variant of Acorn 954 Pentode
  146. Khron-Hite UHR220 tube power source
  147. Grounding the 4ohm tap
  148. Rectifier mechanical buzz
  149. Informed opinion(s) on phase inversion?
  150. Computer grade electrolytics
  151. Strange problem with Grundig CS200 tube receiver
  152. Puresound P10 RIAA
  153. Need help on DIY Toccata Phono Preamp
  154. Single 6EB8 tube kit?
  155. SE OPT as PS choke
  156. Best input DHT tube?
  157. Stainless Steel Chassis Polishing
  158. Hm, which order to replace 2 out of 4 tubes?
  159. EL34 Musical Machine Output XFMR suggestions
  160. Driver stage to finals newbie questions - (I hope not dumb questions)
  161. Preamp with single 12ax7 Ecc83 for stereo?
  162. Ming-Da MC-300B845 schematic needed
  163. My RH84 Build - first amp after a 25 year break -:)
  164. Jolida 502a Snubber Mod
  165. Again
  166. KT120, PSE
  167. 6v6 bias with cathodyne
  168. How did the "magic eye" work on old valve radios ?
  169. High voltage switching
  170. High voltage switching
  171. EF184 as ccs / design questions / spice model
  172. ECC807
  173. Chassis thickness
  174. Compactron 6C10 & 6Q11/6K11 tube data
  175. Output voltage guitar preamp
  176. Reverse Engineering leads from Tube amp
  177. Did you all see this??
  178. WESTREX 60 WATT AMP
  179. Johari's audio system
  180. el95 single ended amp project needs help with preamp
  181. SS Rectifers and Zero-Crossing Distortion, possible fix or idotic idea?
  182. 3 ways active crossover
  183. 5691 tube tonal balance
  184. Dynaco Mark III chassis
  185. variac - breadboard with choke input
  186. Stancor A-8053 Output Transformer - opinions wanted!
  187. Nice OPT's for headphone amp...
  188. Eimac 304TH anode question
  189. Is WE310A > 45 > 300B PP possible?
  190. Aikido 5687 PCB - Headphone and C3
  191. Twist-lok caps?
  192. Tube RIAA(something easy)
  193. Testing power pentodes
  194. NTC THERMISTOR as SOFT START for TUBES
  195. NEW ARIA (MENG) MINI 6P1
  196. Basic schematic for Dodd Audio tube buffer?
  197. EL844
  198. 3 channel all tube preamp pedal w/fx loops for all clone build
  199. Tube CAD?
  200. Cap Problem with philco 49-1401
  201. Music Angel
  202. Help 7189A Tubes!
  203. Bulb in cathode?
  204. Gain and volume pots - newbie question
  205. Resistor test TX7525 AMRG CMF55
  206. I think I made a mistake
  207. 12at7 and 12au7
  208. PSE KT88 using Mikael's basic schematic.....
  209. PSU sanity check - negative rail?
  210. Mods Tube Amps/Pre-amp
  211. Help to find out what OPT are these
  212. LL1660 P PZ Lundahl interstage ringing problem GM70pp
  213. Possible PS chokes
  214. Adding Bal output to Akido
  215. Input impedance, the higher the better or not?
  216. Risk of DC coupled input with tube pre-amp ?
  217. UL Cascode phono
  218. DC Imbalance with the LTP
  219. More Wireless World articles archived
  220. Yaqin VK-2100 Static from one channel
  221. Direct Coupled, Self Biasing, CCS Loaded, 300B Amp
  222. Testing a 300A on a B&K
  223. Diodes to tube
  224. PL84/EL86 push pull
  225. circuit diagram
  226. Ultralinear operation
  227. 60hz hum in component system
  228. Crackling Amp
  229. Regulated Supply for Direct Coupled Amp
  230. Explanation wanted
  231. Dynaco FM1 stereo updating ?
  232. tube amp diy off. Is this a good deal?
  233. SE driver
  234. DN2540 + LM317 cascode CCS?
  235. Recapping old tube amp
  236. How a SRPP stage sounds like?
  237. Help troubleshooting SE Pentode amp
  238. What meter for Bias?
  239. Mains tranformer noise
  240. Tube tester block diagram
  241. got a custom 829b amp that i got laying around, need to know what driver to use
  242. Universal filament regulator
  243. ECC88 - 6DJ8 Cascode Plate Curves
  244. Gain of Phase Inverter
  245. CF/CCS, can it be made simpler?
  246. 2A3 Heater Hum Pot
  247. Need help - black out while the amp. was on
  248. simple question about cathodyne PI
  249. Where can I get a cover for the OPT and PS
  250. Power supply for heater