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  1. Audio Innovations series 800 reactivation + some mods
  2. Using 2 rectifiers off 1 power supply
  3. Tube power supply
  4. Improving low bass of a Scott 299c
  5. 1939 Radioshack Catalog online...Anyone have a time machine?
  6. VCCS filament supply for 813
  7. digital volume control
  8. Philips AD3800AM and AD9710AM clones
  9. MTP6N60E replacement
  10. Upgrading output transformers
  11. Cascode RIAA
  12. need a manual for selectron model 40 tube tester??
  13. Volume swinging problem
  14. How to use the almost Group buy Diyaudio CCS circuit
  15. Big voltage swing tube recommendation please
  16. Morgan Jones KT88 PP
  17. Mystery Tube Amplifier -- Help?????
  18. tube tester how can i tell if have match pair?
  19. Finding bias point in PP fixed bias
  20. 6V6 Push Pull
  21. Transformer Mounting Braces
  22. Rozenblit 6as7 otl questions
  23. Genesis pre-amplifier schematic wanted
  24. 6H30PI/6922 Preamp Circuit
  25. PFB line amp
  26. 2A3C Mono plate: Shuguang Or Sovtek?
  27. Any kit reccomendation would be helpful
  28. Cleaning tubes...
  29. Anyone recognise these tubes...
  30. big ol' 26lb. output transformer...
  31. ECC88 Help
  32. European Triode Festival ETF08: still some places vacant!
  33. Dynaco MK IV Mystery
  34. 6as7/6080 Se Otl
  35. 6GW8 substitute tube 6BM8?
  36. Choke question
  37. Screen driven output stage
  38. 2a3 parallel driven 6sn7 schem
  39. WMD or Big Freakin Power Supply
  40. DIY My tube tester
  41. Help! May have dropped 12sn7 in place of 6sn7
  42. Got a bucketload of tubes, need identification
  43. Help from Allen Wright SuperReg owner
  44. Moscode 600
  45. Signal caps to keep on hand
  46. pin-compatible EF86 alternative?
  47. Capless Parafeed (with apologies to SY)
  48. T Eaton Viking schematics?
  49. S5 K-16LS mods, tweaks?
  50. 5687 fully balanced line stage
  51. Subminiature sockets
  52. What Do I Have Here?
  53. Bad vacuum?
  54. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  55. Balanced 24V Aikido question
  56. OT question - will it work?
  57. ID Unknown Tube
  58. Time delay start board for tube amps
  59. Hum reduction ideas (again)
  60. Utc Ls-33
  61. K-16ls
  62. Potential valve damping tweak
  63. Conversion Tube PA and Bass Tone
  64. Wanted. Simple EL34 Push Pull Design
  65. PCB advice
  66. Hybrid voltage quadrupler?
  67. my fu80 amp
  68. Pre-amp for BeoMaster
  69. Question re: chokes
  70. Inundated Electrolytics
  71. power transformer recommendation
  72. PS decoupling cap placement
  73. #10SE Tested project
  74. schematics help
  75. HF Decoupling Caps questions
  76. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  77. Useful power transformer design thread on Analogue
  78. Understanding Simple SE design choices
  79. Hewlet Packard transformer
  80. 6BG6 for KT66
  81. new learning
  82. TV-7D/U Tube setting --- 6550
  83. ecc40 LTP
  84. Latest incarnation of music angel kt88
  85. Tubelab SE oscillation?
  86. AN Shinri schematic wanted
  87. Found a box of old toobs
  88. Aikido line stage - plus phono line stage
  89. Hook up wire?
  90. Irritating problem with soft start
  91. OTL with 6AN5
  92. Mono Blocs Completed...
  93. Magic Eye for solid state Tuner?
  94. a question about drive power
  95. converting BAL to UNBAL using tubes and without transformers
  96. Aikiado question
  97. Top cap tubes+ arc welder
  98. Small beginner amplifier and hello :)
  99. Blackburn MicroTech TechTube(TM) Valves update!
  100. Resistor setup for integrated amp & headphones?
  101. Brook 2A3 PP amp ID help
  102. heater voltage
  103. kobayashi 300B push-pull
  104. Triode strapping a tetrode...
  105. Any info on 3572 Half wave Rectier
  106. Question Conrad Johnson reg. psu?
  107. Another 300B SE
  108. 7-pin Low Rp tube
  109. S-5 K-16LS Kit arrived in Germany !!
  110. Transcendar RIP?
  111. 6N6P in an Aikido?
  112. Were can i bay a Telefunken 6ak5 ?
  113. SE 245 driverstage
  114. 12ax7 srpp dac output
  115. How this circuit works (Baby Huey type)
  116. New tubeamp
  117. Snubber caps
  118. Counterpoint sa220
  119. Resistor before tube rectifier
  120. TCJ Push-Pull calculator v2
  121. Heathkit AG-9A audio generator schematic !!!
  122. Sources for James Transformers
  123. High Voltage Soldering (IPC Standards?)
  124. Speakers for Flea Powered Amps <1.5W
  125. Opinions on Allen & Bradley Carbon Composite resistors
  126. wich tube is best for the yaqin cd buffer ?
  127. Mikael Abdellah's SE KT88 bass response + tightness
  128. How best to use the PSU xformer I have
  129. 6L6GC AB2 Amp
  130. Kofi Annan in: "I'd Like Me a Mic Pre!"
  131. Too much gain - help with changing driver tube.
  132. EL95 SE schematic wanted
  133. test settings hickok i177B for 5ar4/gz34
  134. good value (i.e. cheap) OPT in uk?
  135. Input xfmr, diff stage, CCS questions
  136. Theoretical OPT question
  137. input/driver stage for kt88/6550
  138. thyratron switching
  139. Making component choices (6V6/EL84 PP)
  140. Which socket for a 5Y3??
  141. using #47 in p-p
  142. 6463-12b4a srpp?
  143. Need some help identifying which tubes are suitable
  144. Tube Priceing
  145. edcor output transformer advice
  146. Non top-cap tubes for plasma tweeters
  147. Intermittent Static on ARC REF 3 Preamp
  148. Have you guys seen this yet?
  149. ECC88 heater overvoltage damage?
  150. Recommended designs
  151. Aikido Phono PCB Modifications
  152. Need Power supply advice for Andreas 845
  153. Phonodude question
  154. Power Supply for Aikido Phono Pre
  155. Completed New Combo Amplifier
  156. Want to Build my first Tube Amp
  157. single tube amp ~pspice problem
  158. Modding a tonebone to switch to pentode triode operation?Can this be done??
  159. Relyon KT88/EL34 SE issue, schem attached
  160. Search 35T Schematic
  161. Hickok 600A, shattered mercury rectifier...
  162. Pete Millett Low-Mu Triode Preamp
  163. First scope/buying oscilloscope probes
  164. thyratron rectifier
  165. Need help making some choices on what to build
  166. A2 curves and curvecaptor.
  167. damper diodes ....
  168. Different Rectifier Warmup Times
  169. stupid question of the day
  170. Fisher 400 Output Transformers
  171. Tube amp repair
  172. Hi-end 845 with only two stage
  173. PL519 Heaters in series blow fuse
  174. Looking for parts to tinker with
  175. KT88 Recommendations?
  176. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  177. Mirror of Steve Bench's site
  178. Quick Question About RCA Input
  179. Built an amp kit!
  180. Holy Smoking Toroid Winder
  181. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  182. why do tubes have a treble lost ???
  183. Low Frequency Mains Noise
  184. Help modifying circuit
  185. Ever heard sth like this?
  186. dual volume control
  187. Need DIY help in Los Angeles area with tube preamp
  188. 6c19p se otl
  189. pt
  190. "Killer" Screen Driven Push-Pull Amp Initial Queries
  191. fixed vs. cathode bias
  192. RH84 Push pull?
  193. Cheapfield project
  194. heater connection problem
  195. What to do with this PP OPT?
  196. Question about Bridging
  197. White Fuzzy furry growth..........TV-2C/U
  198. Tweaks for 845 Power amp
  199. the aardvark grows a spud!
  200. WEST output transformers?
  201. Tube Buffer Success!
  202. Lafayette LA-234 Amplifier
  203. filter choke voltage rating
  204. Dealing with Mr. Miller (phono)
  205. Western Electric plant
  206. Pentod PP - too much NFB needed to sound nice?
  207. Lf351 replacement for Curcio Daniel I
  208. How bad is grounding one side of AC filament ?
  209. New matched tubes - where to use them
  210. Glow Tube (0B2) Help
  211. Bose 901 + Tube amps
  212. Tube tape NR
  213. Ming Da MC-34B fuse value?
  214. Potentiometer with bass boost pin for Simple SE?
  215. Volume pot for TubelabSE 300B recommendation ?
  216. (help) Make a 13.8V 50 Amp continueous current
  217. Toy amp.
  218. Looking to build a 25-30 WPC Push Pull amp - Need Help
  219. Quicksilver 8417 question
  220. GSM interference
  221. &lt;WTA&gt;Tube biased by LED
  222. source for knobs
  223. Lundahl 4-30 Build
  224. Anyone Have Info On Triode Board For MK IV?
  225. I would like to DIY Marantz model9
  226. 813se DIY OPT problems
  227. Got a big output trafo I want to use.
  228. building S5 k-amp
  229. EL84 max power for HiFi Amp
  230. Question about cathode bypass capacitor:
  231. Curcio Daniel II builders?
  232. 13E1 SE design
  233. Booster Amp for low powered SET
  234. Soft starting the rectifier
  235. Tube preamp components help
  236. My own version of the EAR 834P Clone
  237. Eico HF86 modifications
  238. Heaters and centre tap
  239. DHT's, fixed bias, sharred filament supply
  240. Do New JJ GZ34's have less B+ Drop?
  241. Grounded, Floating, or Thermistor-To-Case for Center Tap
  242. Hi, looking for some info on tube amplifier design basics
  243. Nifty little (cheap ) transformer for bias supply
  244. Problems with my ARC VT 130SE
  245. Telefunken V69B - Tube Amp
  246. HV Regulator
  247. EL95 mini SE
  248. NOS vs. Chinese Plate Caps
  249. TL783 regulated B+ 250V PSU schematic
  250. 6922 tube buffer

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