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  1. Audio Research VT 100 MKII need help!!
  2. Help with AD30 PSU build
  3. Who was the Japanese Amp Guru?
  4. 6922 vs an ECC82.....a test.
  5. Triode connected 6LW6 for SE
  6. 12AD7???
  7. New Book Review
  8. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  9. looking for hi volt commercial power supplies
  10. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  11. ECC85
  12. Pioneer 304B fm/am reciever schematic
  13. ECC82 JJ Made in Slovak Republic!?
  14. Definition of matched
  15. Polycarbonate as coupling caps?
  16. pick tubes for tubecad unbalancer
  17. OPT for EL34
  18. 12v dc tube amp/pre high SQ
  19. Better than 12au7?
  20. Amps and 4-ohm loads
  21. What is the "best" tube amp / speaker / source you have ever used?
  22. 814 as Triode / Max. Ug2 voltage
  23. valves better than solid state?
  24. musical fidelity x10d clone
  25. Acrosound 7591A amp
  26. suggestions for simple amp wanted
  27. Wish you could nail down your copper wool holder?
  28. HELP- Pricing Genuine Genalex KT77's
  29. K120 on 6550/KT88/KT90 anyone tried???
  30. do tubes ever leak b+ into heaters?
  31. How can I use these high-current, low-inductance chokes?
  32. 6005w Q+introduction
  33. Sonic Frontiers Line 3 Increate the Output Voltage
  34. Dynaco ST-70 chassis
  35. Opinion on the scheme with the 12AX7!
  36. Fully Parametric Tube EQ (with gyrators)
  37. 600v snap-in electrolytics
  38. anyone knows of 6 channel tube amplier ?
  39. 6N6P SE idea
  40. EL84
  41. Long tails and current sources
  42. How to reduce gain in mu-follower?
  43. Chassis
  44. Single Ended Amplifier 6P43P
  45. 6C33C spacing
  46. A very excitable Luminescence
  47. KT-88 Data sheet question.
  48. Good 12ax7
  49. Operating points theory...
  50. 1-stage (killer, literally) amp made of junk
  51. Two bridges and a CT transformer....
  52. What should clipping look like? (AKA reading sine waves)
  53. Combining coupling cap's
  54. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  55. 845 with kathode bias
  56. Mixing Resistor types?
  57. Looking for EI-75 80% perm ...
  58. Ambient temperature target
  59. Old radio
  60. JJ glowing twice as bright
  61. DPA150
  62. Discharging a capacitor - should I??
  63. German transformer builder
  64. 6P30B-V subminiature tube
  65. Improved Tube Headphones Amp
  66. Best method of reducing line voltage into vintage transformers?
  67. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  68. hum measurement
  69. DIY 450VA+ multi-tapped tube power trafo
  70. DIY 450VA+ multi-tapped tube power trafo
  71. Duelund Alexander Copper Foil Capacitors
  72. Yaqin MS-20L tube recommendation
  73. Tube version of aleph-x. Is it possible?
  74. help - Looking for specs Trimax TA1439
  75. where can i get transformers in the UK?
  76. Mono 5W-17W Power Amp using EL84 push-pull
  77. Reference Books
  78. Tresco?
  79. BELL 3DT, Phono RIAA Odditty
  80. 6SL7/6V6 tubes in an RH84 SE amplifier?
  81. How to calculate max voltage swing in cathode follower?
  82. Power Transformer Temp
  83. Silvaweld OTL Tube Reference 100 schematics
  84. Need suggestion for 6.3V-0-6.3V
  85. Unison Research SMART 845
  86. 26/45 SE amp ?
  87. V2 rocket guidance system.
  88. Sweep Tube SEP
  89. Help me find cirquit, I forgot where I last saw it?
  90. Passive or Active? For Wet/Dry mix on valve driven reverb.
  91. Plate resistor for FVP5a
  92. Simulation
  93. DHT w/ DC heater - How to rig cathode bias?
  94. schematics needed- Luxman MQ70
  95. CSS for 6c33?
  96. Svetlana (Winged C) 6L6GC vs. the Others...
  97. Power Supply Help- 807's, High Voltage
  98. Looking for info about a 1940s Amp
  99. More amplifiers in the Wireless World Archive
  100. why does my amp require a preamp?
  101. Why two GZ34 in this schematic?
  102. Floating Dc heaters, capacitor to ground
  103. anyone have experience with 1J17B tube
  104. Preventing arcing on standby switch?
  105. Help with buzzing mains transformer
  106. Balanced Amp Topology
  107. ECC33
  108. Distortion spectrum vs feedback
  109. Heaters question
  110. Why do transformers have such*&%#* hardware?
  111. what's my fisher 400 off gassing?
  112. Executone schematic needed
  113. parafeed output amplifier
  114. B+K 500 Testor Question
  115. CCCP SUBTUBE: my last project
  116. Aikido Line-Stage jumper question
  117. Tube Amplifier to power Gale GS401 speakers
  118. Bypass Cap on cathode?
  119. How to measure/calculate dB of negative feedback?
  120. Need your advices & experiences
  121. Parmeko gresham transformers specifications
  122. Valve cascodes for Phono input.
  123. ST-70 XLR Balanced Driver Boad
  124. I'm new here any places for like us newbies?
  125. Noob looking for some advice
  126. Stand Alone guitar power amp for evaluation
  127. QQE04/5 Curves
  128. Help on Audio Research D79A adjustment
  129. lazarus preamp hums even with volume down and no components connected.
  130. Troubles when elevating a LT supply
  131. Turning up the heat: cathode bias
  132. Anyone build Dynaco Mk IIIs with Sullivan boards?
  133. Lowering gain on Frank's 6SN7 preamp
  134. Pro amp input modification
  135. Sanity of compactron for "integrated" headphone amp?
  136. vdc drop
  137. HELP - SMART 845 or 300B SE
  138. DC Servo - Direct Coupling Applications?
  139. Edison 12 amplifier
  140. Mounting terminal strips to blank copper board
  141. 6C33C tube socket for GM70 tube??
  142. Fisher X100C 2 sets speakers?
  143. 4P1L DHT Line Stage
  144. Trying to identify an old radio tube
  145. Yaqin CD3 upgrading caps help for novice
  146. push pull adjustable fixed bias
  147. Another SE amp design.
  148. Chassis to experiment with....
  149. Ray Butts Echosonic #27
  150. Ampeg Reverberocket II Hum
  151. What coupling capacitor values are common
  152. Yamamoto A-09s
  153. 9001 variant of Acorn 954 Pentode
  154. Khron-Hite UHR220 tube power source
  155. Grounding the 4ohm tap
  156. Rectifier mechanical buzz
  157. Informed opinion(s) on phase inversion?
  158. Computer grade electrolytics
  159. Strange problem with Grundig CS200 tube receiver
  160. Puresound P10 RIAA
  161. Need help on DIY Toccata Phono Preamp
  162. Single 6EB8 tube kit?
  163. SE OPT as PS choke
  164. Best input DHT tube?
  165. Stainless Steel Chassis Polishing
  166. Hm, which order to replace 2 out of 4 tubes?
  167. EL34 Musical Machine Output XFMR suggestions
  168. Driver stage to finals newbie questions - (I hope not dumb questions)
  169. Preamp with single 12ax7 Ecc83 for stereo?
  170. Ming-Da MC-300B845 schematic needed
  171. My RH84 Build - first amp after a 25 year break -:)
  172. Jolida 502a Snubber Mod
  173. Again
  174. KT120, PSE
  175. 6v6 bias with cathodyne
  176. How did the "magic eye" work on old valve radios ?
  177. High voltage switching
  178. High voltage switching
  179. EF184 as ccs / design questions / spice model
  180. ECC807
  181. Chassis thickness
  182. Compactron 6C10 & 6Q11/6K11 tube data
  183. Output voltage guitar preamp
  184. Reverse Engineering leads from Tube amp
  185. Did you all see this??
  186. WESTREX 60 WATT AMP
  187. Johari's audio system
  188. el95 single ended amp project needs help with preamp
  189. SS Rectifers and Zero-Crossing Distortion, possible fix or idotic idea?
  190. 3 ways active crossover
  191. 5691 tube tonal balance
  192. Dynaco Mark III chassis
  193. variac - breadboard with choke input
  194. Stancor A-8053 Output Transformer - opinions wanted!
  195. Nice OPT's for headphone amp...
  196. Eimac 304TH anode question
  197. Is WE310A > 45 > 300B PP possible?
  198. Aikido 5687 PCB - Headphone and C3
  199. Twist-lok caps?
  200. Tube RIAA(something easy)
  201. Testing power pentodes
  202. NTC THERMISTOR as SOFT START for TUBES
  203. NEW ARIA (MENG) MINI 6P1
  204. Basic schematic for Dodd Audio tube buffer?
  205. EL844
  206. 3 channel all tube preamp pedal w/fx loops for all clone build
  207. Tube CAD?
  208. Cap Problem with philco 49-1401
  209. Music Angel
  210. Help 7189A Tubes!
  211. Bulb in cathode?
  212. Gain and volume pots - newbie question
  213. Resistor test TX7525 AMRG CMF55
  214. I think I made a mistake
  215. 12at7 and 12au7
  216. PSE KT88 using Mikael's basic schematic.....
  217. PSU sanity check - negative rail?
  218. Mods Tube Amps/Pre-amp
  219. Help to find out what OPT are these
  220. LL1660 P PZ Lundahl interstage ringing problem GM70pp
  221. Possible PS chokes
  222. Adding Bal output to Akido
  223. Input impedance, the higher the better or not?
  224. Risk of DC coupled input with tube pre-amp ?
  225. UL Cascode phono
  226. DC Imbalance with the LTP
  227. More Wireless World articles archived
  228. Yaqin VK-2100 Static from one channel
  229. Direct Coupled, Self Biasing, CCS Loaded, 300B Amp
  230. Testing a 300A on a B&K
  231. Diodes to tube
  232. PL84/EL86 push pull
  233. circuit diagram
  234. Ultralinear operation
  235. 60hz hum in component system
  236. Crackling Amp
  237. Regulated Supply for Direct Coupled Amp
  238. Explanation wanted
  239. Dynaco FM1 stereo updating ?
  240. tube amp diy off. Is this a good deal?
  241. SE driver
  242. DN2540 + LM317 cascode CCS?
  243. Recapping old tube amp
  244. How a SRPP stage sounds like?
  245. Help troubleshooting SE Pentode amp
  246. What meter for Bias?
  247. Mains tranformer noise
  248. Tube tester block diagram
  249. got a custom 829b amp that i got laying around, need to know what driver to use
  250. Universal filament regulator

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