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  1. Anyone familiar with VAC PA 90C1?
  2. Help restore an RCP 413 tube tester
  3. voltage reg make heat sink live. Bad idea?
  4. Audio Innovations series 800 reactivation + some mods
  5. Using 2 rectifiers off 1 power supply
  6. Tube power supply
  7. Improving low bass of a Scott 299c
  8. 1939 Radioshack Catalog online...Anyone have a time machine?
  9. VCCS filament supply for 813
  10. digital volume control
  11. Philips AD3800AM and AD9710AM clones
  12. MTP6N60E replacement
  13. Upgrading output transformers
  14. Cascode RIAA
  15. need a manual for selectron model 40 tube tester??
  16. Volume swinging problem
  17. How to use the almost Group buy Diyaudio CCS circuit
  18. Big voltage swing tube recommendation please
  19. Morgan Jones KT88 PP
  20. Mystery Tube Amplifier -- Help?????
  21. tube tester how can i tell if have match pair?
  22. Photo flash caps for the power supply?
  23. Finding bias point in PP fixed bias
  24. 6V6 Push Pull
  25. Transformer Mounting Braces
  26. Rozenblit 6as7 otl questions
  27. Genesis pre-amplifier schematic wanted
  28. 6H30PI/6922 Preamp Circuit
  29. PFB line amp
  30. 2A3C Mono plate: Shuguang Or Sovtek?
  31. Any kit reccomendation would be helpful
  32. Cleaning tubes...
  33. Anyone recognise these tubes...
  34. big ol' 26lb. output transformer...
  35. ECC88 Help
  36. European Triode Festival ETF08: still some places vacant!
  37. Dynaco MK IV Mystery
  38. 6as7/6080 Se Otl
  39. 6GW8 substitute tube 6BM8?
  40. Choke question
  41. Screen driven output stage
  42. Peavey Delta Blues Reverb Frustration
  43. 2a3 parallel driven 6sn7 schem
  44. WMD or Big Freakin Power Supply
  45. DIY My tube tester
  46. Help! May have dropped 12sn7 in place of 6sn7
  47. Got a bucketload of tubes, need identification
  48. Help from Allen Wright SuperReg owner
  49. Moscode 600
  50. Signal caps to keep on hand
  51. pin-compatible EF86 alternative?
  52. Capless Parafeed (with apologies to SY)
  53. T Eaton Viking schematics?
  54. S5 K-16LS mods, tweaks?
  55. 5687 fully balanced line stage
  56. Subminiature sockets
  57. What Do I Have Here?
  58. Bad vacuum?
  59. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  60. Balanced 24V Aikido question
  61. How to wire a 'Buck' transformer
  62. OT question - will it work?
  63. ID Unknown Tube
  64. Time delay start board for tube amps
  65. Hum reduction ideas (again)
  66. Utc Ls-33
  67. K-16ls
  68. Potential valve damping tweak
  69. Conversion Tube PA and Bass Tone
  70. Wanted. Simple EL34 Push Pull Design
  71. PCB advice
  72. Hybrid voltage quadrupler?
  73. my fu80 amp
  74. Pre-amp for BeoMaster
  75. Question re: chokes
  76. Inundated Electrolytics
  77. power transformer recommendation
  78. PS decoupling cap placement
  79. USSR Russian Caps. KBG-MN or K75-24?
  80. #10SE Tested project
  81. schematics help
  82. HF Decoupling Caps questions
  83. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  84. Useful power transformer design thread on Analogue
  85. Understanding Simple SE design choices
  86. Fender Pro Amp
  87. Hewlet Packard transformer
  88. 6BG6 for KT66
  89. new learning
  90. TV-7D/U Tube setting --- 6550
  91. ecc40 LTP
  92. Latest incarnation of music angel kt88
  93. Tubelab SE oscillation?
  94. 6SL7 5E3 - together at last?
  95. AN Shinri schematic wanted
  96. Found a box of old toobs
  97. Choke input filter LF noise
  98. Aikido line stage - plus phono line stage
  99. Hook up wire?
  100. Irritating problem with soft start
  101. OTL with 6AN5
  102. Mono Blocs Completed...
  103. Magic Eye for solid state Tuner?
  104. a question about drive power
  105. converting BAL to UNBAL using tubes and without transformers
  106. Aikiado question
  107. Top cap tubes+ arc welder
  108. Small beginner amplifier and hello :)
  109. Blackburn MicroTech TechTube(TM) Valves update!
  110. Resistor setup for integrated amp & headphones?
  111. Brook 2A3 PP amp ID help
  112. heater voltage
  113. kobayashi 300B push-pull
  114. Triode strapping a tetrode...
  115. Any info on 3572 Half wave Rectier
  116. Question Conrad Johnson reg. psu?
  117. Another 300B SE
  118. 7-pin Low Rp tube
  119. S-5 K-16LS Kit arrived in Germany !!
  120. Transcendar RIP?
  121. 6N6P in an Aikido?
  122. Were can i bay a Telefunken 6ak5 ?
  123. SE 245 driverstage
  124. 12ax7 srpp dac output
  125. How this circuit works (Baby Huey type)
  126. New tubeamp
  127. Snubber caps
  128. Counterpoint sa220
  129. Resistor before tube rectifier
  130. TCJ Push-Pull calculator v2
  131. Heathkit AG-9A audio generator schematic !!!
  132. Sources for James Transformers
  133. High Voltage Soldering (IPC Standards?)
  134. Speakers for Flea Powered Amps <1.5W
  135. Opinions on Allen & Bradley Carbon Composite resistors
  136. wich tube is best for the yaqin cd buffer ?
  137. Mikael Abdellah's SE KT88 bass response + tightness
  138. How best to use the PSU xformer I have
  139. 6L6GC AB2 Amp
  140. Kofi Annan in: "I'd Like Me a Mic Pre!"
  141. Too much gain - help with changing driver tube.
  142. EL95 SE schematic wanted
  143. test settings hickok i177B for 5ar4/gz34
  144. Gibson Ga-20 rvt reverb problems
  145. good value (i.e. cheap) OPT in uk?
  146. Input xfmr, diff stage, CCS questions
  147. Theoretical OPT question
  148. input/driver stage for kt88/6550
  149. thyratron switching
  150. Making component choices (6V6/EL84 PP)
  151. Which socket for a 5Y3??
  152. using #47 in p-p
  153. 6463-12b4a srpp?
  154. Need some help identifying which tubes are suitable
  155. Tube Priceing
  156. edcor output transformer advice
  157. Non top-cap tubes for plasma tweeters
  158. Intermittent Static on ARC REF 3 Preamp
  159. Have you guys seen this yet?
  160. ECC88 heater overvoltage damage?
  161. Recommended designs
  162. Aikido Phono PCB Modifications
  163. Need Power supply advice for Andreas 845
  164. Phonodude question
  165. Power Supply for Aikido Phono Pre
  166. Completed New Combo Amplifier
  167. Want to Build my first Tube Amp
  168. single tube amp ~pspice problem
  169. Modding a tonebone to switch to pentode triode operation?Can this be done??
  170. Relyon KT88/EL34 SE issue, schem attached
  171. Search 35T Schematic
  172. Hickok 600A, shattered mercury rectifier...
  173. Pete Millett Low-Mu Triode Preamp
  174. First scope/buying oscilloscope probes
  175. thyratron rectifier
  176. Need help making some choices on what to build
  177. A2 curves and curvecaptor.
  178. damper diodes ....
  179. Different Rectifier Warmup Times
  180. stupid question of the day
  181. Fisher 400 Output Transformers
  182. Tube amp repair
  183. Hi-end 845 with only two stage
  184. PL519 Heaters in series blow fuse
  185. Looking for parts to tinker with
  186. KT88 Recommendations?
  187. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  188. Mirror of Steve Bench's site
  189. Quick Question About RCA Input
  190. Built an amp kit!
  191. Holy Smoking Toroid Winder
  192. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  193. why do tubes have a treble lost ???
  194. Low Frequency Mains Noise
  195. Help modifying circuit
  196. Ever heard sth like this?
  197. dual volume control
  198. Need DIY help in Los Angeles area with tube preamp
  199. 6c19p se otl
  200. pt
  201. "Killer" Screen Driven Push-Pull Amp Initial Queries
  202. fixed vs. cathode bias
  203. RH84 Push pull?
  204. Cheapfield project
  205. heater connection problem
  206. What to do with this PP OPT?
  207. Question about Bridging
  208. White Fuzzy furry growth..........TV-2C/U
  209. Tweaks for 845 Power amp
  210. the aardvark grows a spud!
  211. WEST output transformers?
  212. Tube Buffer Success!
  213. Lafayette LA-234 Amplifier
  214. filter choke voltage rating
  215. Dealing with Mr. Miller (phono)
  216. Western Electric plant
  217. Pentod PP - too much NFB needed to sound nice?
  218. Lf351 replacement for Curcio Daniel I
  219. How bad is grounding one side of AC filament ?
  220. New matched tubes - where to use them
  221. Glow Tube (0B2) Help
  222. Bose 901 + Tube amps
  223. Tube tape NR
  224. Ming Da MC-34B fuse value?
  225. Potentiometer with bass boost pin for Simple SE?
  226. Volume pot for TubelabSE 300B recommendation ?
  227. (help) Make a 13.8V 50 Amp continueous current
  228. Toy amp.
  229. Looking to build a 25-30 WPC Push Pull amp - Need Help
  230. Quicksilver 8417 question
  231. GSM interference
  232. &lt;WTA&gt;Tube biased by LED
  233. source for knobs
  234. Lundahl 4-30 Build
  235. Anyone Have Info On Triode Board For MK IV?
  236. I would like to DIY Marantz model9
  237. 813se DIY OPT problems
  238. Got a big output trafo I want to use.
  239. building S5 k-amp
  240. EL84 max power for HiFi Amp
  241. Question about cathode bypass capacitor:
  242. Curcio Daniel II builders?
  243. 13E1 SE design
  244. Booster Amp for low powered SET
  245. Soft starting the rectifier
  246. Tube preamp components help
  247. My own version of the EAR 834P Clone
  248. Eico HF86 modifications
  249. Heaters and centre tap
  250. DHT's, fixed bias, sharred filament supply

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