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  1. how to optimize this pentode PP (PP1 clone with S11E12)
  2. Can I change the input to a 6SL7?
  3. Outputtransformer to IGA 6550C ULPP
  4. Question on use PSUD2 software
  5. Please add to my confusion re stepup transformers
  6. filament power supply question
  7. Major Hum Problem
  8. FARMER LAMP amp
  9. Valve amp "master class"
  10. Toroid power transformers - are they a good idea?
  11. EL84 SE amplifier
  12. Gain Problems
  13. My SE KT-88 Build thread
  14. Rolling da(rling's) 6j4wa
  15. Phono pre amp
  16. Michealson Audio Da Vinci Preamp
  17. Acrosound PP 6550: Any Advice?
  18. PS idea: isolating transformer from load
  19. K-16LS Help Please
  20. 6N6P-I life-time
  21. Filament Xformer woes...
  22. The Use of 1:1 Input Transformers in Linestages
  23. 12hg7 vs 12hn7a
  24. Anyone familiar with VAC PA 90C1?
  25. Help restore an RCP 413 tube tester
  26. voltage reg make heat sink live. Bad idea?
  27. Audio Innovations series 800 reactivation + some mods
  28. Using 2 rectifiers off 1 power supply
  29. Tube power supply
  30. Improving low bass of a Scott 299c
  31. 1939 Radioshack Catalog online...Anyone have a time machine?
  32. VCCS filament supply for 813
  33. digital volume control
  34. Philips AD3800AM and AD9710AM clones
  35. MTP6N60E replacement
  36. Upgrading output transformers
  37. Cascode RIAA
  38. need a manual for selectron model 40 tube tester??
  39. Volume swinging problem
  40. How to use the almost Group buy Diyaudio CCS circuit
  41. Big voltage swing tube recommendation please
  42. Morgan Jones KT88 PP
  43. Mystery Tube Amplifier -- Help?????
  44. tube tester how can i tell if have match pair?
  45. Photo flash caps for the power supply?
  46. Finding bias point in PP fixed bias
  47. 6V6 Push Pull
  48. Transformer Mounting Braces
  49. Rozenblit 6as7 otl questions
  50. Genesis pre-amplifier schematic wanted
  51. 6H30PI/6922 Preamp Circuit
  52. PFB line amp
  53. 2A3C Mono plate: Shuguang Or Sovtek?
  54. Any kit reccomendation would be helpful
  55. Cleaning tubes...
  56. Anyone recognise these tubes...
  57. big ol' 26lb. output transformer...
  58. ECC88 Help
  59. European Triode Festival ETF08: still some places vacant!
  60. Dynaco MK IV Mystery
  61. 6as7/6080 Se Otl
  62. 6GW8 substitute tube 6BM8?
  63. Choke question
  64. Screen driven output stage
  65. Peavey Delta Blues Reverb Frustration
  66. 2a3 parallel driven 6sn7 schem
  67. WMD or Big Freakin Power Supply
  68. DIY My tube tester
  69. Help! May have dropped 12sn7 in place of 6sn7
  70. Got a bucketload of tubes, need identification
  71. Help from Allen Wright SuperReg owner
  72. Moscode 600
  73. Signal caps to keep on hand
  74. pin-compatible EF86 alternative?
  75. Capless Parafeed (with apologies to SY)
  76. T Eaton Viking schematics?
  77. S5 K-16LS mods, tweaks?
  78. 5687 fully balanced line stage
  79. Subminiature sockets
  80. What Do I Have Here?
  81. Bad vacuum?
  82. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  83. Balanced 24V Aikido question
  84. How to wire a 'Buck' transformer
  85. OT question - will it work?
  86. ID Unknown Tube
  87. Time delay start board for tube amps
  88. Hum reduction ideas (again)
  89. Utc Ls-33
  90. K-16ls
  91. Potential valve damping tweak
  92. Conversion Tube PA and Bass Tone
  93. Wanted. Simple EL34 Push Pull Design
  94. PCB advice
  95. Hybrid voltage quadrupler?
  96. my fu80 amp
  97. Pre-amp for BeoMaster
  98. Question re: chokes
  99. Inundated Electrolytics
  100. power transformer recommendation
  101. PS decoupling cap placement
  102. USSR Russian Caps. KBG-MN or K75-24?
  103. #10SE Tested project
  104. schematics help
  105. HF Decoupling Caps questions
  106. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  107. Useful power transformer design thread on Analogue
  108. Understanding Simple SE design choices
  109. Fender Pro Amp
  110. Hewlet Packard transformer
  111. 6BG6 for KT66
  112. new learning
  113. TV-7D/U Tube setting --- 6550
  114. ecc40 LTP
  115. Latest incarnation of music angel kt88
  116. Tubelab SE oscillation?
  117. 6SL7 5E3 - together at last?
  118. AN Shinri schematic wanted
  119. Found a box of old toobs
  120. Choke input filter LF noise
  121. Aikido line stage - plus phono line stage
  122. Hook up wire?
  123. Irritating problem with soft start
  124. OTL with 6AN5
  125. Mono Blocs Completed...
  126. Magic Eye for solid state Tuner?
  127. a question about drive power
  128. converting BAL to UNBAL using tubes and without transformers
  129. Aikiado question
  130. Top cap tubes+ arc welder
  131. Small beginner amplifier and hello :)
  132. Blackburn MicroTech TechTube(TM) Valves update!
  133. Resistor setup for integrated amp & headphones?
  134. Brook 2A3 PP amp ID help
  135. heater voltage
  136. kobayashi 300B push-pull
  137. Triode strapping a tetrode...
  138. Any info on 3572 Half wave Rectier
  139. Question Conrad Johnson reg. psu?
  140. Another 300B SE
  141. 7-pin Low Rp tube
  142. S-5 K-16LS Kit arrived in Germany !!
  143. Transcendar RIP?
  144. 6N6P in an Aikido?
  145. Were can i bay a Telefunken 6ak5 ?
  146. SE 245 driverstage
  147. 12ax7 srpp dac output
  148. How this circuit works (Baby Huey type)
  149. New tubeamp
  150. Snubber caps
  151. Counterpoint sa220
  152. Resistor before tube rectifier
  153. TCJ Push-Pull calculator v2
  154. Heathkit AG-9A audio generator schematic !!!
  155. Sources for James Transformers
  156. High Voltage Soldering (IPC Standards?)
  157. Speakers for Flea Powered Amps <1.5W
  158. Opinions on Allen & Bradley Carbon Composite resistors
  159. wich tube is best for the yaqin cd buffer ?
  160. Mikael Abdellah's SE KT88 bass response + tightness
  161. How best to use the PSU xformer I have
  162. 6L6GC AB2 Amp
  163. Kofi Annan in: "I'd Like Me a Mic Pre!"
  164. Too much gain - help with changing driver tube.
  165. EL95 SE schematic wanted
  166. test settings hickok i177B for 5ar4/gz34
  167. Gibson Ga-20 rvt reverb problems
  168. good value (i.e. cheap) OPT in uk?
  169. Input xfmr, diff stage, CCS questions
  170. Theoretical OPT question
  171. input/driver stage for kt88/6550
  172. thyratron switching
  173. Making component choices (6V6/EL84 PP)
  174. Which socket for a 5Y3??
  175. using #47 in p-p
  176. 6463-12b4a srpp?
  177. Need some help identifying which tubes are suitable
  178. Tube Priceing
  179. edcor output transformer advice
  180. Non top-cap tubes for plasma tweeters
  181. Intermittent Static on ARC REF 3 Preamp
  182. Have you guys seen this yet?
  183. ECC88 heater overvoltage damage?
  184. Recommended designs
  185. Aikido Phono PCB Modifications
  186. Need Power supply advice for Andreas 845
  187. Phonodude question
  188. Power Supply for Aikido Phono Pre
  189. Completed New Combo Amplifier
  190. Want to Build my first Tube Amp
  191. single tube amp ~pspice problem
  192. Modding a tonebone to switch to pentode triode operation?Can this be done??
  193. Relyon KT88/EL34 SE issue, schem attached
  194. Search 35T Schematic
  195. Hickok 600A, shattered mercury rectifier...
  196. Pete Millett Low-Mu Triode Preamp
  197. First scope/buying oscilloscope probes
  198. thyratron rectifier
  199. Need help making some choices on what to build
  200. A2 curves and curvecaptor.
  201. damper diodes ....
  202. Different Rectifier Warmup Times
  203. stupid question of the day
  204. Fisher 400 Output Transformers
  205. Tube amp repair
  206. Hi-end 845 with only two stage
  207. PL519 Heaters in series blow fuse
  208. Looking for parts to tinker with
  209. KT88 Recommendations?
  210. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  211. Mirror of Steve Bench's site
  212. Quick Question About RCA Input
  213. Built an amp kit!
  214. Holy Smoking Toroid Winder
  215. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  216. why do tubes have a treble lost ???
  217. Low Frequency Mains Noise
  218. Help modifying circuit
  219. Ever heard sth like this?
  220. dual volume control
  221. Need DIY help in Los Angeles area with tube preamp
  222. 6c19p se otl
  223. pt
  224. "Killer" Screen Driven Push-Pull Amp Initial Queries
  225. fixed vs. cathode bias
  226. RH84 Push pull?
  227. Cheapfield project
  228. heater connection problem
  229. What to do with this PP OPT?
  230. Question about Bridging
  231. White Fuzzy furry growth..........TV-2C/U
  232. Tweaks for 845 Power amp
  233. the aardvark grows a spud!
  234. WEST output transformers?
  235. Tube Buffer Success!
  236. Lafayette LA-234 Amplifier
  237. filter choke voltage rating
  238. Dealing with Mr. Miller (phono)
  239. Western Electric plant
  240. Pentod PP - too much NFB needed to sound nice?
  241. Lf351 replacement for Curcio Daniel I
  242. How bad is grounding one side of AC filament ?
  243. New matched tubes - where to use them
  244. Glow Tube (0B2) Help
  245. Bose 901 + Tube amps
  246. Tube tape NR
  247. Ming Da MC-34B fuse value?
  248. Potentiometer with bass boost pin for Simple SE?
  249. Volume pot for TubelabSE 300B recommendation ?
  250. (help) Make a 13.8V 50 Amp continueous current

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