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  1. New 300B PP amp completed, phase shift questions
  2. One more PSU2 question
  3. 5U4 Darling power TX advice needed
  4. how to optimize this pentode PP (PP1 clone with S11E12)
  5. Can I change the input to a 6SL7?
  6. Outputtransformer to IGA 6550C ULPP
  7. Question on use PSUD2 software
  8. Please add to my confusion re stepup transformers
  9. filament power supply question
  10. Major Hum Problem
  11. FARMER LAMP amp
  12. Valve amp "master class"
  13. Toroid power transformers - are they a good idea?
  14. EL84 SE amplifier
  15. Gain Problems
  16. My SE KT-88 Build thread
  17. Rolling da(rling's) 6j4wa
  18. Phono pre amp
  19. Michealson Audio Da Vinci Preamp
  20. Acrosound PP 6550: Any Advice?
  21. PS idea: isolating transformer from load
  22. K-16LS Help Please
  23. 6N6P-I life-time
  24. Filament Xformer woes...
  25. The Use of 1:1 Input Transformers in Linestages
  26. 12hg7 vs 12hn7a
  27. Anyone familiar with VAC PA 90C1?
  28. Help restore an RCP 413 tube tester
  29. voltage reg make heat sink live. Bad idea?
  30. Audio Innovations series 800 reactivation + some mods
  31. Using 2 rectifiers off 1 power supply
  32. Tube power supply
  33. Improving low bass of a Scott 299c
  34. 1939 Radioshack Catalog online...Anyone have a time machine?
  35. VCCS filament supply for 813
  36. digital volume control
  37. Philips AD3800AM and AD9710AM clones
  38. MTP6N60E replacement
  39. Upgrading output transformers
  40. Cascode RIAA
  41. need a manual for selectron model 40 tube tester??
  42. Volume swinging problem
  43. How to use the almost Group buy Diyaudio CCS circuit
  44. Big voltage swing tube recommendation please
  45. Morgan Jones KT88 PP
  46. Mystery Tube Amplifier -- Help?????
  47. tube tester how can i tell if have match pair?
  48. Photo flash caps for the power supply?
  49. Finding bias point in PP fixed bias
  50. 6V6 Push Pull
  51. Transformer Mounting Braces
  52. Rozenblit 6as7 otl questions
  53. Genesis pre-amplifier schematic wanted
  54. 6H30PI/6922 Preamp Circuit
  55. PFB line amp
  56. 2A3C Mono plate: Shuguang Or Sovtek?
  57. Any kit reccomendation would be helpful
  58. Cleaning tubes...
  59. Anyone recognise these tubes...
  60. big ol' 26lb. output transformer...
  61. ECC88 Help
  62. European Triode Festival ETF08: still some places vacant!
  63. Dynaco MK IV Mystery
  64. 6as7/6080 Se Otl
  65. 6GW8 substitute tube 6BM8?
  66. Choke question
  67. Screen driven output stage
  68. 2a3 parallel driven 6sn7 schem
  69. WMD or Big Freakin Power Supply
  70. DIY My tube tester
  71. Help! May have dropped 12sn7 in place of 6sn7
  72. Got a bucketload of tubes, need identification
  73. Help from Allen Wright SuperReg owner
  74. Moscode 600
  75. Signal caps to keep on hand
  76. pin-compatible EF86 alternative?
  77. Capless Parafeed (with apologies to SY)
  78. T Eaton Viking schematics?
  79. S5 K-16LS mods, tweaks?
  80. 5687 fully balanced line stage
  81. Subminiature sockets
  82. What Do I Have Here?
  83. Bad vacuum?
  84. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  85. Balanced 24V Aikido question
  86. How to wire a 'Buck' transformer
  87. OT question - will it work?
  88. ID Unknown Tube
  89. Time delay start board for tube amps
  90. Hum reduction ideas (again)
  91. Utc Ls-33
  92. K-16ls
  93. Potential valve damping tweak
  94. Conversion Tube PA and Bass Tone
  95. Wanted. Simple EL34 Push Pull Design
  96. PCB advice
  97. Hybrid voltage quadrupler?
  98. my fu80 amp
  99. Pre-amp for BeoMaster
  100. Question re: chokes
  101. Inundated Electrolytics
  102. power transformer recommendation
  103. PS decoupling cap placement
  104. USSR Russian Caps. KBG-MN or K75-24?
  105. #10SE Tested project
  106. schematics help
  107. HF Decoupling Caps questions
  108. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  109. Useful power transformer design thread on Analogue
  110. Understanding Simple SE design choices
  111. Hewlet Packard transformer
  112. 6BG6 for KT66
  113. new learning
  114. TV-7D/U Tube setting --- 6550
  115. ecc40 LTP
  116. Latest incarnation of music angel kt88
  117. Tubelab SE oscillation?
  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. good value (i.e. cheap) OPT in uk?
  168. Input xfmr, diff stage, CCS questions
  169. Theoretical OPT question
  170. input/driver stage for kt88/6550
  171. thyratron switching
  172. Making component choices (6V6/EL84 PP)
  173. Which socket for a 5Y3??
  174. using #47 in p-p
  175. 6463-12b4a srpp?
  176. Need some help identifying which tubes are suitable
  177. Tube Priceing
  178. edcor output transformer advice
  179. Non top-cap tubes for plasma tweeters
  180. Intermittent Static on ARC REF 3 Preamp
  181. Have you guys seen this yet?
  182. ECC88 heater overvoltage damage?
  183. Recommended designs
  184. Aikido Phono PCB Modifications
  185. Need Power supply advice for Andreas 845
  186. Phonodude question
  187. Power Supply for Aikido Phono Pre
  188. Completed New Combo Amplifier
  189. Want to Build my first Tube Amp
  190. single tube amp ~pspice problem
  191. Modding a tonebone to switch to pentode triode operation?Can this be done??
  192. Relyon KT88/EL34 SE issue, schem attached
  193. Search 35T Schematic
  194. Hickok 600A, shattered mercury rectifier...
  195. Pete Millett Low-Mu Triode Preamp
  196. First scope/buying oscilloscope probes
  197. thyratron rectifier
  198. Need help making some choices on what to build
  199. A2 curves and curvecaptor.
  200. damper diodes ....
  201. Different Rectifier Warmup Times
  202. stupid question of the day
  203. Fisher 400 Output Transformers
  204. Tube amp repair
  205. Hi-end 845 with only two stage
  206. PL519 Heaters in series blow fuse
  207. Looking for parts to tinker with
  208. KT88 Recommendations?
  209. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  210. Mirror of Steve Bench's site
  211. Quick Question About RCA Input
  212. Built an amp kit!
  213. Holy Smoking Toroid Winder
  214. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  215. why do tubes have a treble lost ???
  216. Low Frequency Mains Noise
  217. Help modifying circuit
  218. Ever heard sth like this?
  219. dual volume control
  220. Need DIY help in Los Angeles area with tube preamp
  221. 6c19p se otl
  222. pt
  223. "Killer" Screen Driven Push-Pull Amp Initial Queries
  224. fixed vs. cathode bias
  225. RH84 Push pull?
  226. Cheapfield project
  227. heater connection problem
  228. What to do with this PP OPT?
  229. Question about Bridging
  230. White Fuzzy furry growth..........TV-2C/U
  231. Tweaks for 845 Power amp
  232. the aardvark grows a spud!
  233. WEST output transformers?
  234. Tube Buffer Success!
  235. Lafayette LA-234 Amplifier
  236. filter choke voltage rating
  237. Dealing with Mr. Miller (phono)
  238. Western Electric plant
  239. Pentod PP - too much NFB needed to sound nice?
  240. Lf351 replacement for Curcio Daniel I
  241. How bad is grounding one side of AC filament ?
  242. New matched tubes - where to use them
  243. Glow Tube (0B2) Help
  244. Bose 901 + Tube amps
  245. Tube tape NR
  246. Ming Da MC-34B fuse value?
  247. Potentiometer with bass boost pin for Simple SE?
  248. Volume pot for TubelabSE 300B recommendation ?
  249. (help) Make a 13.8V 50 Amp continueous current
  250. Toy amp.

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