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  1. Filament Xformer woes...
  2. The Use of 1:1 Input Transformers in Linestages
  3. 12hg7 vs 12hn7a
  4. Anyone familiar with VAC PA 90C1?
  5. Help restore an RCP 413 tube tester
  6. voltage reg make heat sink live. Bad idea?
  7. Audio Innovations series 800 reactivation + some mods
  8. Using 2 rectifiers off 1 power supply
  9. Tube power supply
  10. Improving low bass of a Scott 299c
  11. 1939 Radioshack Catalog online...Anyone have a time machine?
  12. VCCS filament supply for 813
  13. digital volume control
  14. Philips AD3800AM and AD9710AM clones
  15. MTP6N60E replacement
  16. Upgrading output transformers
  17. Cascode RIAA
  18. need a manual for selectron model 40 tube tester??
  19. Volume swinging problem
  20. How to use the almost Group buy Diyaudio CCS circuit
  21. Big voltage swing tube recommendation please
  22. Morgan Jones KT88 PP
  23. Mystery Tube Amplifier -- Help?????
  24. tube tester how can i tell if have match pair?
  25. Photo flash caps for the power supply?
  26. Finding bias point in PP fixed bias
  27. 6V6 Push Pull
  28. Transformer Mounting Braces
  29. Rozenblit 6as7 otl questions
  30. Genesis pre-amplifier schematic wanted
  31. 6H30PI/6922 Preamp Circuit
  32. PFB line amp
  33. 2A3C Mono plate: Shuguang Or Sovtek?
  34. Any kit reccomendation would be helpful
  35. Cleaning tubes...
  36. Anyone recognise these tubes...
  37. big ol' 26lb. output transformer...
  38. ECC88 Help
  39. European Triode Festival ETF08: still some places vacant!
  40. Dynaco MK IV Mystery
  41. 6as7/6080 Se Otl
  42. 6GW8 substitute tube 6BM8?
  43. Choke question
  44. Screen driven output stage
  45. Peavey Delta Blues Reverb Frustration
  46. 2a3 parallel driven 6sn7 schem
  47. WMD or Big Freakin Power Supply
  48. DIY My tube tester
  49. Help! May have dropped 12sn7 in place of 6sn7
  50. Got a bucketload of tubes, need identification
  51. Help from Allen Wright SuperReg owner
  52. Moscode 600
  53. Signal caps to keep on hand
  54. pin-compatible EF86 alternative?
  55. Capless Parafeed (with apologies to SY)
  56. T Eaton Viking schematics?
  57. S5 K-16LS mods, tweaks?
  58. 5687 fully balanced line stage
  59. Subminiature sockets
  60. What Do I Have Here?
  61. Bad vacuum?
  62. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  63. Balanced 24V Aikido question
  64. How to wire a 'Buck' transformer
  65. OT question - will it work?
  66. ID Unknown Tube
  67. Time delay start board for tube amps
  68. Hum reduction ideas (again)
  69. Utc Ls-33
  70. K-16ls
  71. Potential valve damping tweak
  72. Conversion Tube PA and Bass Tone
  73. Wanted. Simple EL34 Push Pull Design
  74. PCB advice
  75. Hybrid voltage quadrupler?
  76. my fu80 amp
  77. Pre-amp for BeoMaster
  78. Question re: chokes
  79. Inundated Electrolytics
  80. power transformer recommendation
  81. PS decoupling cap placement
  82. USSR Russian Caps. KBG-MN or K75-24?
  83. #10SE Tested project
  84. schematics help
  85. HF Decoupling Caps questions
  86. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  87. Useful power transformer design thread on Analogue
  88. Understanding Simple SE design choices
  89. Hewlet Packard transformer
  90. 6BG6 for KT66
  91. new learning
  92. TV-7D/U Tube setting --- 6550
  93. ecc40 LTP
  94. Latest incarnation of music angel kt88
  95. Tubelab SE oscillation?
  96. 6SL7 5E3 - together at last?
  97. AN Shinri schematic wanted
  98. Found a box of old toobs
  99. Choke input filter LF noise
  100. Aikido line stage - plus phono line stage
  101. Hook up wire?
  102. Irritating problem with soft start
  103. OTL with 6AN5
  104. Mono Blocs Completed...
  105. Magic Eye for solid state Tuner?
  106. a question about drive power
  107. converting BAL to UNBAL using tubes and without transformers
  108. Aikiado question
  109. Top cap tubes+ arc welder
  110. Small beginner amplifier and hello :)
  111. Blackburn MicroTech TechTube(TM) Valves update!
  112. Resistor setup for integrated amp & headphones?
  113. Brook 2A3 PP amp ID help
  114. heater voltage
  115. kobayashi 300B push-pull
  116. Triode strapping a tetrode...
  117. Any info on 3572 Half wave Rectier
  118. Question Conrad Johnson reg. psu?
  119. Another 300B SE
  120. 7-pin Low Rp tube
  121. S-5 K-16LS Kit arrived in Germany !!
  122. Transcendar RIP?
  123. 6N6P in an Aikido?
  124. Were can i bay a Telefunken 6ak5 ?
  125. SE 245 driverstage
  126. 12ax7 srpp dac output
  127. How this circuit works (Baby Huey type)
  128. New tubeamp
  129. Snubber caps
  130. Counterpoint sa220
  131. Resistor before tube rectifier
  132. TCJ Push-Pull calculator v2
  133. Heathkit AG-9A audio generator schematic !!!
  134. Sources for James Transformers
  135. High Voltage Soldering (IPC Standards?)
  136. Speakers for Flea Powered Amps <1.5W
  137. Opinions on Allen & Bradley Carbon Composite resistors
  138. wich tube is best for the yaqin cd buffer ?
  139. Mikael Abdellah's SE KT88 bass response + tightness
  140. How best to use the PSU xformer I have
  141. 6L6GC AB2 Amp
  142. Kofi Annan in: "I'd Like Me a Mic Pre!"
  143. Too much gain - help with changing driver tube.
  144. EL95 SE schematic wanted
  145. test settings hickok i177B for 5ar4/gz34
  146. good value (i.e. cheap) OPT in uk?
  147. Input xfmr, diff stage, CCS questions
  148. Theoretical OPT question
  149. input/driver stage for kt88/6550
  150. thyratron switching
  151. Making component choices (6V6/EL84 PP)
  152. Which socket for a 5Y3??
  153. using #47 in p-p
  154. 6463-12b4a srpp?
  155. Need some help identifying which tubes are suitable
  156. Tube Priceing
  157. edcor output transformer advice
  158. Non top-cap tubes for plasma tweeters
  159. Intermittent Static on ARC REF 3 Preamp
  160. Have you guys seen this yet?
  161. ECC88 heater overvoltage damage?
  162. Recommended designs
  163. Aikido Phono PCB Modifications
  164. Need Power supply advice for Andreas 845
  165. Phonodude question
  166. Power Supply for Aikido Phono Pre
  167. Completed New Combo Amplifier
  168. Want to Build my first Tube Amp
  169. single tube amp ~pspice problem
  170. Modding a tonebone to switch to pentode triode operation?Can this be done??
  171. Relyon KT88/EL34 SE issue, schem attached
  172. Search 35T Schematic
  173. Hickok 600A, shattered mercury rectifier...
  174. Pete Millett Low-Mu Triode Preamp
  175. First scope/buying oscilloscope probes
  176. thyratron rectifier
  177. Need help making some choices on what to build
  178. A2 curves and curvecaptor.
  179. damper diodes ....
  180. Different Rectifier Warmup Times
  181. stupid question of the day
  182. Fisher 400 Output Transformers
  183. Tube amp repair
  184. Hi-end 845 with only two stage
  185. PL519 Heaters in series blow fuse
  186. Looking for parts to tinker with
  187. KT88 Recommendations?
  188. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  189. Mirror of Steve Bench's site
  190. Quick Question About RCA Input
  191. Built an amp kit!
  192. Holy Smoking Toroid Winder
  193. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  194. why do tubes have a treble lost ???
  195. Low Frequency Mains Noise
  196. Help modifying circuit
  197. Ever heard sth like this?
  198. dual volume control
  199. Need DIY help in Los Angeles area with tube preamp
  200. 6c19p se otl
  201. pt
  202. "Killer" Screen Driven Push-Pull Amp Initial Queries
  203. fixed vs. cathode bias
  204. RH84 Push pull?
  205. Cheapfield project
  206. heater connection problem
  207. What to do with this PP OPT?
  208. Question about Bridging
  209. White Fuzzy furry growth..........TV-2C/U
  210. Tweaks for 845 Power amp
  211. the aardvark grows a spud!
  212. WEST output transformers?
  213. Tube Buffer Success!
  214. Lafayette LA-234 Amplifier
  215. filter choke voltage rating
  216. Dealing with Mr. Miller (phono)
  217. Western Electric plant
  218. Pentod PP - too much NFB needed to sound nice?
  219. Lf351 replacement for Curcio Daniel I
  220. How bad is grounding one side of AC filament ?
  221. New matched tubes - where to use them
  222. Glow Tube (0B2) Help
  223. Bose 901 + Tube amps
  224. Tube tape NR
  225. Ming Da MC-34B fuse value?
  226. Potentiometer with bass boost pin for Simple SE?
  227. Volume pot for TubelabSE 300B recommendation ?
  228. (help) Make a 13.8V 50 Amp continueous current
  229. Toy amp.
  230. Looking to build a 25-30 WPC Push Pull amp - Need Help
  231. Quicksilver 8417 question
  232. GSM interference
  233. &lt;WTA&gt;Tube biased by LED
  234. source for knobs
  235. Lundahl 4-30 Build
  236. Anyone Have Info On Triode Board For MK IV?
  237. I would like to DIY Marantz model9
  238. 813se DIY OPT problems
  239. Got a big output trafo I want to use.
  240. building S5 k-amp
  241. EL84 max power for HiFi Amp
  242. Question about cathode bypass capacitor:
  243. Curcio Daniel II builders?
  244. 13E1 SE design
  245. Booster Amp for low powered SET
  246. Soft starting the rectifier
  247. Tube preamp components help
  248. My own version of the EAR 834P Clone
  249. Eico HF86 modifications
  250. Heaters and centre tap

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