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  1. Popping in stepped volume control
  2. 6by5 CRC Values
  3. 12AX7 MM/MC Phono Preamplifier PCB ref VTL
  4. Is this do-able?
  5. PCB for Gary Pimm's CCS & SS Pentode
  6. EL86 Single Ended PP Power Amplifier
  7. Diyhifisupply Billies - dead OPTs?
  8. 6H30P-DR
  9. Tube AMP and stax headphones....
  10. soft start power supply for dynaco st-70
  11. The Telefunken EF86?
  12. Can you run parallel circuits from a rectifier?
  13. Mullard 5-20 with 6L6GC's?
  14. Adding balanced input to 6N1P tube.
  15. Partial feedback (anode grid) with cathode follower
  16. 4P1L as First gain stage or in Pre-Amp..?
  17. Advice on 6418 design requested
  18. Shorting jumpers for octal sockets
  19. Tube lineup in an Admiral y4302
  20. John Broskie MIA?
  21. Audio Research VT 100 MKII need help!!
  22. Help with AD30 PSU build
  23. Who was the Japanese Amp Guru?
  24. 6922 vs an ECC82.....a test.
  25. Triode connected 6LW6 for SE
  26. 12AD7???
  27. New Book Review
  28. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  29. looking for hi volt commercial power supplies
  30. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  31. ECC85
  32. Pioneer 304B fm/am reciever schematic
  33. ECC82 JJ Made in Slovak Republic!?
  34. Definition of matched
  35. Polycarbonate as coupling caps?
  36. pick tubes for tubecad unbalancer
  37. OPT for EL34
  38. 12v dc tube amp/pre high SQ
  39. Better than 12au7?
  40. Amps and 4-ohm loads
  41. What is the "best" tube amp / speaker / source you have ever used?
  42. 814 as Triode / Max. Ug2 voltage
  43. valves better than solid state?
  44. musical fidelity x10d clone
  45. Acrosound 7591A amp
  46. suggestions for simple amp wanted
  47. Wish you could nail down your copper wool holder?
  48. HELP- Pricing Genuine Genalex KT77's
  49. K120 on 6550/KT88/KT90 anyone tried???
  50. do tubes ever leak b+ into heaters?
  51. How can I use these high-current, low-inductance chokes?
  52. 6005w Q+introduction
  53. Sonic Frontiers Line 3 Increate the Output Voltage
  54. Dynaco ST-70 chassis
  55. Opinion on the scheme with the 12AX7!
  56. Fully Parametric Tube EQ (with gyrators)
  57. 600v snap-in electrolytics
  58. anyone knows of 6 channel tube amplier ?
  59. 6N6P SE idea
  60. EL84
  61. Long tails and current sources
  62. How to reduce gain in mu-follower?
  63. Chassis
  64. Single Ended Amplifier 6P43P
  65. 6C33C spacing
  66. A very excitable Luminescence
  67. KT-88 Data sheet question.
  68. Good 12ax7
  69. Operating points theory...
  70. 1-stage (killer, literally) amp made of junk
  71. Two bridges and a CT transformer....
  72. What should clipping look like? (AKA reading sine waves)
  73. Combining coupling cap's
  74. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  75. 845 with kathode bias
  76. Mixing Resistor types?
  77. Looking for EI-75 80% perm ...
  78. Ambient temperature target
  79. Old radio
  80. JJ glowing twice as bright
  81. DPA150
  82. Discharging a capacitor - should I??
  83. German transformer builder
  84. 6P30B-V subminiature tube
  85. Improved Tube Headphones Amp
  86. Best method of reducing line voltage into vintage transformers?
  87. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  88. hum measurement
  89. DIY 450VA+ multi-tapped tube power trafo
  90. DIY 450VA+ multi-tapped tube power trafo
  91. Duelund Alexander Copper Foil Capacitors
  92. Yaqin MS-20L tube recommendation
  93. Tube version of aleph-x. Is it possible?
  94. help - Looking for specs Trimax TA1439
  95. where can i get transformers in the UK?
  96. Mono 5W-17W Power Amp using EL84 push-pull
  97. Reference Books
  98. Tresco?
  99. BELL 3DT, Phono RIAA Odditty
  100. 6SL7/6V6 tubes in an RH84 SE amplifier?
  101. How to calculate max voltage swing in cathode follower?
  102. Power Transformer Temp
  103. Silvaweld OTL Tube Reference 100 schematics
  104. Need suggestion for 6.3V-0-6.3V
  105. Unison Research SMART 845
  106. 26/45 SE amp ?
  107. V2 rocket guidance system.
  108. Sweep Tube SEP
  109. Help me find cirquit, I forgot where I last saw it?
  110. Passive or Active? For Wet/Dry mix on valve driven reverb.
  111. Plate resistor for FVP5a
  112. Simulation
  113. DHT w/ DC heater - How to rig cathode bias?
  114. schematics needed- Luxman MQ70
  115. CSS for 6c33?
  116. Svetlana (Winged C) 6L6GC vs. the Others...
  117. Power Supply Help- 807's, High Voltage
  118. Looking for info about a 1940s Amp
  119. More amplifiers in the Wireless World Archive
  120. why does my amp require a preamp?
  121. Why two GZ34 in this schematic?
  122. Floating Dc heaters, capacitor to ground
  123. anyone have experience with 1J17B tube
  124. Preventing arcing on standby switch?
  125. Help with buzzing mains transformer
  126. Balanced Amp Topology
  127. ECC33
  128. Distortion spectrum vs feedback
  129. Heaters question
  130. Why do transformers have such*&%#* hardware?
  131. what's my fisher 400 off gassing?
  132. Executone schematic needed
  133. parafeed output amplifier
  134. B+K 500 Testor Question
  135. CCCP SUBTUBE: my last project
  136. Aikido Line-Stage jumper question
  137. Tube Amplifier to power Gale GS401 speakers
  138. Bypass Cap on cathode?
  139. How to measure/calculate dB of negative feedback?
  140. Need your advices & experiences
  141. Parmeko gresham transformers specifications
  142. Valve cascodes for Phono input.
  143. ST-70 XLR Balanced Driver Boad
  144. I'm new here any places for like us newbies?
  145. Noob looking for some advice
  146. Stand Alone guitar power amp for evaluation
  147. QQE04/5 Curves
  148. Help on Audio Research D79A adjustment
  149. lazarus preamp hums even with volume down and no components connected.
  150. Troubles when elevating a LT supply
  151. Turning up the heat: cathode bias
  152. Anyone build Dynaco Mk IIIs with Sullivan boards?
  153. Lowering gain on Frank's 6SN7 preamp
  154. Pro amp input modification
  155. Sanity of compactron for "integrated" headphone amp?
  156. vdc drop
  157. HELP - SMART 845 or 300B SE
  158. DC Servo - Direct Coupling Applications?
  159. Edison 12 amplifier
  160. Mounting terminal strips to blank copper board
  161. 6C33C tube socket for GM70 tube??
  162. Fisher X100C 2 sets speakers?
  163. 4P1L DHT Line Stage
  164. Trying to identify an old radio tube
  165. Yaqin CD3 upgrading caps help for novice
  166. push pull adjustable fixed bias
  167. Another SE amp design.
  168. Chassis to experiment with....
  169. Ray Butts Echosonic #27
  170. Ampeg Reverberocket II Hum
  171. What coupling capacitor values are common
  172. Yamamoto A-09s
  173. 9001 variant of Acorn 954 Pentode
  174. Khron-Hite UHR220 tube power source
  175. Grounding the 4ohm tap
  176. Rectifier mechanical buzz
  177. Informed opinion(s) on phase inversion?
  178. Computer grade electrolytics
  179. Strange problem with Grundig CS200 tube receiver
  180. Puresound P10 RIAA
  181. Need help on DIY Toccata Phono Preamp
  182. Single 6EB8 tube kit?
  183. SE OPT as PS choke
  184. Best input DHT tube?
  185. Stainless Steel Chassis Polishing
  186. Hm, which order to replace 2 out of 4 tubes?
  187. EL34 Musical Machine Output XFMR suggestions
  188. Driver stage to finals newbie questions - (I hope not dumb questions)
  189. Preamp with single 12ax7 Ecc83 for stereo?
  190. Ming-Da MC-300B845 schematic needed
  191. My RH84 Build - first amp after a 25 year break -:)
  192. Jolida 502a Snubber Mod
  193. Again
  194. KT120, PSE
  195. 6v6 bias with cathodyne
  196. How did the "magic eye" work on old valve radios ?
  197. High voltage switching
  198. High voltage switching
  199. EF184 as ccs / design questions / spice model
  200. ECC807
  201. Chassis thickness
  202. Compactron 6C10 & 6Q11/6K11 tube data
  203. Output voltage guitar preamp
  204. Reverse Engineering leads from Tube amp
  205. Did you all see this??
  206. WESTREX 60 WATT AMP
  207. Johari's audio system
  208. el95 single ended amp project needs help with preamp
  209. SS Rectifers and Zero-Crossing Distortion, possible fix or idotic idea?
  210. 3 ways active crossover
  211. 5691 tube tonal balance
  212. Dynaco Mark III chassis
  213. variac - breadboard with choke input
  214. Stancor A-8053 Output Transformer - opinions wanted!
  215. Nice OPT's for headphone amp...
  216. Eimac 304TH anode question
  217. Is WE310A > 45 > 300B PP possible?
  218. Aikido 5687 PCB - Headphone and C3
  219. Twist-lok caps?
  220. Tube RIAA(something easy)
  221. Testing power pentodes
  222. NTC THERMISTOR as SOFT START for TUBES
  223. NEW ARIA (MENG) MINI 6P1
  224. Basic schematic for Dodd Audio tube buffer?
  225. EL844
  226. 3 channel all tube preamp pedal w/fx loops for all clone build
  227. Tube CAD?
  228. Cap Problem with philco 49-1401
  229. Music Angel
  230. Help 7189A Tubes!
  231. Bulb in cathode?
  232. Gain and volume pots - newbie question
  233. Resistor test TX7525 AMRG CMF55
  234. I think I made a mistake
  235. 12at7 and 12au7
  236. PSE KT88 using Mikael's basic schematic.....
  237. PSU sanity check - negative rail?
  238. Mods Tube Amps/Pre-amp
  239. Help to find out what OPT are these
  240. LL1660 P PZ Lundahl interstage ringing problem GM70pp
  241. Possible PS chokes
  242. Adding Bal output to Akido
  243. Input impedance, the higher the better or not?
  244. Risk of DC coupled input with tube pre-amp ?
  245. UL Cascode phono
  246. DC Imbalance with the LTP
  247. More Wireless World articles archived
  248. Yaqin VK-2100 Static from one channel
  249. Direct Coupled, Self Biasing, CCS Loaded, 300B Amp
  250. Testing a 300A on a B&K