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  1. First Project, need some help
  2. Graetz Scerzo Schematic
  3. simple se 2a3 amp help!!!!!
  4. 5bc3 rectifier
  5. Help me improve this PSU. (6c33 set, voltage doubler)
  6. Choke Loaded Driver Load Lines Question
  7. CCS and tube aging
  8. Tetra lives!!!!!
  9. Tube shops/supplies in Brisbane/Gold Coast
  10. AC VT25 filament?
  11. Let's show go on: Building Monster SE!
  12. Mystery 6AQ5A powered chassis?
  13. 6Y6G tube for low-voltage SE amplifier?
  14. Jolida gain and negative feedback?
  15. 1/2 of the tube for each channel?
  16. Problem with Legacy pentode driver stage
  17. 845 Operating Point
  18. Tube rectifiers
  19. D76 Inrush current limiter thermistor?
  20. New to Tubes? How to get the basics, read on..
  21. interstage tansformer impedence
  22. 2 PSU sharing the same Power transformer?
  23. Biasing amp
  24. CCS placement
  25. clueless on console
  26. 5E3 Build Problems Cont'd
  27. Popping in stepped volume control
  28. 6by5 CRC Values
  29. Is this do-able?
  30. PCB for Gary Pimm's CCS & SS Pentode
  31. EL86 Single Ended PP Power Amplifier
  32. Diyhifisupply Billies - dead OPTs?
  33. 6H30P-DR
  34. Tube AMP and stax headphones....
  35. soft start power supply for dynaco st-70
  36. The Telefunken EF86?
  37. Can you run parallel circuits from a rectifier?
  38. Mullard 5-20 with 6L6GC's?
  39. Adding balanced input to 6N1P tube.
  40. Partial feedback (anode grid) with cathode follower
  41. 4P1L as First gain stage or in Pre-Amp..?
  42. Advice on 6418 design requested
  43. Shorting jumpers for octal sockets
  44. Tube lineup in an Admiral y4302
  45. John Broskie MIA?
  46. Audio Research VT 100 MKII need help!!
  47. Help with AD30 PSU build
  48. Who was the Japanese Amp Guru?
  49. 6922 vs an ECC82.....a test.
  50. Triode connected 6LW6 for SE
  51. 12AD7???
  52. New Book Review
  53. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  54. looking for hi volt commercial power supplies
  55. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  56. ECC85
  57. Pioneer 304B fm/am reciever schematic
  58. ECC82 JJ Made in Slovak Republic!?
  59. Definition of matched
  60. Polycarbonate as coupling caps?
  61. pick tubes for tubecad unbalancer
  62. OPT for EL34
  63. 12v dc tube amp/pre high SQ
  64. Better than 12au7?
  65. Amps and 4-ohm loads
  66. What is the "best" tube amp / speaker / source you have ever used?
  67. 814 as Triode / Max. Ug2 voltage
  68. valves better than solid state?
  69. musical fidelity x10d clone
  70. Acrosound 7591A amp
  71. suggestions for simple amp wanted
  72. Wish you could nail down your copper wool holder?
  73. HELP- Pricing Genuine Genalex KT77's
  74. K120 on 6550/KT88/KT90 anyone tried???
  75. do tubes ever leak b+ into heaters?
  76. How can I use these high-current, low-inductance chokes?
  77. 6005w Q+introduction
  78. Sonic Frontiers Line 3 Increate the Output Voltage
  79. Dynaco ST-70 chassis
  80. Opinion on the scheme with the 12AX7!
  81. Fully Parametric Tube EQ (with gyrators)
  82. 600v snap-in electrolytics
  83. anyone knows of 6 channel tube amplier ?
  84. 6N6P SE idea
  85. EL84
  86. Long tails and current sources
  87. How to reduce gain in mu-follower?
  88. Chassis
  89. Single Ended Amplifier 6P43P
  90. 6C33C spacing
  91. A very excitable Luminescence
  92. KT-88 Data sheet question.
  93. Good 12ax7
  94. Operating points theory...
  95. 1-stage (killer, literally) amp made of junk
  96. Two bridges and a CT transformer....
  97. What should clipping look like? (AKA reading sine waves)
  98. Combining coupling cap's
  99. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  100. 845 with kathode bias
  101. Mixing Resistor types?
  102. Looking for EI-75 80% perm ...
  103. Ambient temperature target
  104. Old radio
  105. JJ glowing twice as bright
  106. DPA150
  107. Discharging a capacitor - should I??
  108. German transformer builder
  109. 6P30B-V subminiature tube
  110. Improved Tube Headphones Amp
  111. Best method of reducing line voltage into vintage transformers?
  112. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  113. hum measurement
  114. DIY 450VA+ multi-tapped tube power trafo
  115. DIY 450VA+ multi-tapped tube power trafo
  116. Duelund Alexander Copper Foil Capacitors
  117. Yaqin MS-20L tube recommendation
  118. Tube version of aleph-x. Is it possible?
  119. help - Looking for specs Trimax TA1439
  120. where can i get transformers in the UK?
  121. Mono 5W-17W Power Amp using EL84 push-pull
  122. Reference Books
  123. Tresco?
  124. BELL 3DT, Phono RIAA Odditty
  125. 6SL7/6V6 tubes in an RH84 SE amplifier?
  126. How to calculate max voltage swing in cathode follower?
  127. Power Transformer Temp
  128. Silvaweld OTL Tube Reference 100 schematics
  129. Need suggestion for 6.3V-0-6.3V
  130. Unison Research SMART 845
  131. 26/45 SE amp ?
  132. V2 rocket guidance system.
  133. Sweep Tube SEP
  134. Help me find cirquit, I forgot where I last saw it?
  135. Passive or Active? For Wet/Dry mix on valve driven reverb.
  136. Plate resistor for FVP5a
  137. Simulation
  138. DHT w/ DC heater - How to rig cathode bias?
  139. schematics needed- Luxman MQ70
  140. CSS for 6c33?
  141. Svetlana (Winged C) 6L6GC vs. the Others...
  142. Power Supply Help- 807's, High Voltage
  143. Looking for info about a 1940s Amp
  144. More amplifiers in the Wireless World Archive
  145. why does my amp require a preamp?
  146. Why two GZ34 in this schematic?
  147. Floating Dc heaters, capacitor to ground
  148. anyone have experience with 1J17B tube
  149. Preventing arcing on standby switch?
  150. Help with buzzing mains transformer
  151. Balanced Amp Topology
  152. ECC33
  153. Distortion spectrum vs feedback
  154. Heaters question
  155. Why do transformers have such*&%#* hardware?
  156. what's my fisher 400 off gassing?
  157. Executone schematic needed
  158. parafeed output amplifier
  159. B+K 500 Testor Question
  160. CCCP SUBTUBE: my last project
  161. Aikido Line-Stage jumper question
  162. Tube Amplifier to power Gale GS401 speakers
  163. Bypass Cap on cathode?
  164. How to measure/calculate dB of negative feedback?
  165. Need your advices & experiences
  166. Parmeko gresham transformers specifications
  167. Valve cascodes for Phono input.
  168. ST-70 XLR Balanced Driver Boad
  169. I'm new here any places for like us newbies?
  170. Noob looking for some advice
  171. Stand Alone guitar power amp for evaluation
  172. QQE04/5 Curves
  173. Help on Audio Research D79A adjustment
  174. lazarus preamp hums even with volume down and no components connected.
  175. Troubles when elevating a LT supply
  176. Turning up the heat: cathode bias
  177. Anyone build Dynaco Mk IIIs with Sullivan boards?
  178. Lowering gain on Frank's 6SN7 preamp
  179. Pro amp input modification
  180. Sanity of compactron for "integrated" headphone amp?
  181. vdc drop
  182. HELP - SMART 845 or 300B SE
  183. DC Servo - Direct Coupling Applications?
  184. Edison 12 amplifier
  185. Mounting terminal strips to blank copper board
  186. 6C33C tube socket for GM70 tube??
  187. Fisher X100C 2 sets speakers?
  188. 4P1L DHT Line Stage
  189. Trying to identify an old radio tube
  190. Yaqin CD3 upgrading caps help for novice
  191. push pull adjustable fixed bias
  192. Another SE amp design.
  193. Chassis to experiment with....
  194. Ray Butts Echosonic #27
  195. Ampeg Reverberocket II Hum
  196. What coupling capacitor values are common
  197. Yamamoto A-09s
  198. 9001 variant of Acorn 954 Pentode
  199. Khron-Hite UHR220 tube power source
  200. Grounding the 4ohm tap
  201. Rectifier mechanical buzz
  202. Informed opinion(s) on phase inversion?
  203. Computer grade electrolytics
  204. Strange problem with Grundig CS200 tube receiver
  205. Puresound P10 RIAA
  206. Need help on DIY Toccata Phono Preamp
  207. Single 6EB8 tube kit?
  208. SE OPT as PS choke
  209. Best input DHT tube?
  210. Stainless Steel Chassis Polishing
  211. Hm, which order to replace 2 out of 4 tubes?
  212. EL34 Musical Machine Output XFMR suggestions
  213. Driver stage to finals newbie questions - (I hope not dumb questions)
  214. Preamp with single 12ax7 Ecc83 for stereo?
  215. Ming-Da MC-300B845 schematic needed
  216. My RH84 Build - first amp after a 25 year break -:)
  217. Jolida 502a Snubber Mod
  218. Again
  219. KT120, PSE
  220. 6v6 bias with cathodyne
  221. How did the "magic eye" work on old valve radios ?
  222. High voltage switching
  223. High voltage switching
  224. EF184 as ccs / design questions / spice model
  225. ECC807
  226. Chassis thickness
  227. Compactron 6C10 & 6Q11/6K11 tube data
  228. Output voltage guitar preamp
  229. Reverse Engineering leads from Tube amp
  230. Did you all see this??
  231. WESTREX 60 WATT AMP
  232. Johari's audio system
  233. el95 single ended amp project needs help with preamp
  234. SS Rectifers and Zero-Crossing Distortion, possible fix or idotic idea?
  235. 3 ways active crossover
  236. 5691 tube tonal balance
  237. Dynaco Mark III chassis
  238. variac - breadboard with choke input
  239. Stancor A-8053 Output Transformer - opinions wanted!
  240. Nice OPT's for headphone amp...
  241. Eimac 304TH anode question
  242. Is WE310A > 45 > 300B PP possible?
  243. Aikido 5687 PCB - Headphone and C3
  244. Twist-lok caps?
  245. Tube RIAA(something easy)
  246. Testing power pentodes
  247. NTC THERMISTOR as SOFT START for TUBES
  248. NEW ARIA (MENG) MINI 6P1
  249. Basic schematic for Dodd Audio tube buffer?
  250. EL844

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