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  1. Ping Poindexter - 6SN7 Moebius Linestage Question
  2. More information wanted on this Phase Splitter Circuit
  3. 6UA4-GTA Question
  4. LED cathode bias - how to pick LED?
  5. preamp question
  6. Watch this !
  7. any Welborne Labs Ultrapath owners ?
  8. McIntosh transformer turns ratio
  9. 12E1 & S11E12 as a KT88 substitution
  10. Dynaco ST-70 Triode Conversion Techniques
  11. Larry Moore power supply
  12. SE to Balanced tube preamp idea
  13. Help on Cascode DN2540 CCS
  14. Kt88 Pp
  15. What was the diy world like before the internet?
  16. Updated my website
  17. Interstage question in 6ac5G design
  18. Using a powered sub with my tube amp
  19. 807pp suggestions and guidance please
  20. 2 stage IT coupled SE suggestions.?
  21. WE429A similar to 6V6?
  22. 6FQ7 in RH84
  23. What splitter for this design ?
  24. preamp kit?
  25. PP power supply design questions
  26. Hammond 1650P for KT88 PP - any experience?
  27. Cathode Bypass caps - how to choose?
  28. Marantz 9 output power switch
  29. Single ended KT88 question
  30. Please post your experience with 6C45 and 6H30
  31. Series-Shunt Regulator I need
  32. Hammond Gripe
  33. capacitors in series- what value balancing resistors?
  34. Substituting Pentode for Triode
  35. Pentode Driver Calculations
  36. DHT and speed issues
  37. Aikido vibration issue
  38. Modified Salas Mosfet Shunt Reg
  39. What if O.H. Schade had MOSFETs?
  40. Please Look at my circuit
  41. EL34 tube amp that needs work on
  42. question on differential stage
  43. Need help with my ST70, decrease in one channel
  44. Diff drive
  45. Stereo Aikido GND help
  46. Hashimoto HL-20K-6 Line Output Transformers
  47. What is the RIGHT way to calculate the Value of the cathode resistor?
  48. Kt88 Se
  49. ping Tom Schlangen
  50. Found An Old Transformer, Now What???
  51. Brook 22A restoration, HELP!!
  52. Optimal operating point for 7N7/6SN7?
  53. Loudness Control Calc - Help Please
  54. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  55. New 300B PP amp completed, phase shift questions
  56. One more PSU2 question
  57. 5U4 Darling power TX advice needed
  58. how to optimize this pentode PP (PP1 clone with S11E12)
  59. Can I change the input to a 6SL7?
  60. Outputtransformer to IGA 6550C ULPP
  61. Question on use PSUD2 software
  62. Please add to my confusion re stepup transformers
  63. filament power supply question
  64. Major Hum Problem
  65. FARMER LAMP amp
  66. Valve amp "master class"
  67. Toroid power transformers - are they a good idea?
  68. EL84 SE amplifier
  69. Gain Problems
  70. My SE KT-88 Build thread
  71. Rolling da(rling's) 6j4wa
  72. Phono pre amp
  73. Michealson Audio Da Vinci Preamp
  74. Acrosound PP 6550: Any Advice?
  75. PS idea: isolating transformer from load
  76. K-16LS Help Please
  77. 6N6P-I life-time
  78. Filament Xformer woes...
  79. The Use of 1:1 Input Transformers in Linestages
  80. 12hg7 vs 12hn7a
  81. Anyone familiar with VAC PA 90C1?
  82. voltage reg make heat sink live. Bad idea?
  83. Audio Innovations series 800 reactivation + some mods
  84. Using 2 rectifiers off 1 power supply
  85. Tube power supply
  86. Improving low bass of a Scott 299c
  87. 1939 Radioshack Catalog online...Anyone have a time machine?
  88. VCCS filament supply for 813
  89. digital volume control
  90. Philips AD3800AM and AD9710AM clones
  91. Upgrading output transformers
  92. Cascode RIAA
  93. Volume swinging problem
  94. How to use the almost Group buy Diyaudio CCS circuit
  95. Big voltage swing tube recommendation please
  96. Morgan Jones KT88 PP
  97. Mystery Tube Amplifier -- Help?????
  98. Finding bias point in PP fixed bias
  99. 6V6 Push Pull
  100. Rozenblit 6as7 otl questions
  101. Genesis pre-amplifier schematic wanted
  102. 6H30PI/6922 Preamp Circuit
  103. PFB line amp
  104. 2A3C Mono plate: Shuguang Or Sovtek?
  105. Any kit reccomendation would be helpful
  106. Cleaning tubes...
  107. Anyone recognise these tubes...
  108. big ol' 26lb. output transformer...
  109. ECC88 Help
  110. European Triode Festival ETF08: still some places vacant!
  111. Dynaco MK IV Mystery
  112. 6as7/6080 Se Otl
  113. 6GW8 substitute tube 6BM8?
  114. Choke question
  115. Screen driven output stage
  116. 2a3 parallel driven 6sn7 schem
  117. WMD or Big Freakin Power Supply
  118. Help! May have dropped 12sn7 in place of 6sn7
  119. Got a bucketload of tubes, need identification
  120. Help from Allen Wright SuperReg owner
  121. Moscode 600
  122. Signal caps to keep on hand
  123. pin-compatible EF86 alternative?
  124. Capless Parafeed (with apologies to SY)
  125. T Eaton Viking schematics?
  126. S5 K-16LS mods, tweaks?
  127. 5687 fully balanced line stage
  128. What Do I Have Here?
  129. Bad vacuum?
  130. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  131. Balanced 24V Aikido question
  132. OT question - will it work?
  133. ID Unknown Tube
  134. Time delay start board for tube amps
  135. Hum reduction ideas (again)
  136. Utc Ls-33
  137. K-16ls
  138. Potential valve damping tweak
  139. Conversion Tube PA and Bass Tone
  140. Wanted. Simple EL34 Push Pull Design
  141. PCB advice
  142. Hybrid voltage quadrupler?
  143. my fu80 amp
  144. Pre-amp for BeoMaster
  145. Question re: chokes
  146. power transformer recommendation
  147. PS decoupling cap placement
  148. #10SE Tested project
  149. schematics help
  150. HF Decoupling Caps questions
  151. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  152. Useful power transformer design thread on Analogue
  153. Hewlet Packard transformer
  154. 6BG6 for KT66
  155. new learning
  156. TV-7D/U Tube setting --- 6550
  157. ecc40 LTP
  158. Latest incarnation of music angel kt88
  159. AN Shinri schematic wanted
  160. Found a box of old toobs
  161. Aikido line stage - plus phono line stage
  162. Irritating problem with soft start
  163. OTL with 6AN5
  164. Mono Blocs Completed...
  165. Magic Eye for solid state Tuner?
  166. a question about drive power
  167. converting BAL to UNBAL using tubes and without transformers
  168. Aikiado question
  169. Top cap tubes+ arc welder
  170. Small beginner amplifier and hello :)
  171. Blackburn MicroTech TechTube(TM) Valves update!
  172. Resistor setup for integrated amp & headphones?
  173. Brook 2A3 PP amp ID help
  174. heater voltage
  175. kobayashi 300B push-pull
  176. Triode strapping a tetrode...
  177. Any info on 3572 Half wave Rectier
  178. Question Conrad Johnson reg. psu?
  179. Another 300B SE
  180. 7-pin Low Rp tube
  181. S-5 K-16LS Kit arrived in Germany !!
  182. Transcendar RIP?
  183. 6N6P in an Aikido?
  184. Were can i bay a Telefunken 6ak5 ?
  185. SE 245 driverstage
  186. 12ax7 srpp dac output
  187. How this circuit works (Baby Huey type)
  188. New tubeamp
  189. Snubber caps
  190. Counterpoint sa220
  191. Resistor before tube rectifier
  192. TCJ Push-Pull calculator v2
  193. Sources for James Transformers
  194. High Voltage Soldering (IPC Standards?)
  195. Speakers for Flea Powered Amps <1.5W
  196. wich tube is best for the yaqin cd buffer ?
  197. Mikael Abdellah's SE KT88 bass response + tightness
  198. How best to use the PSU xformer I have
  199. 6L6GC AB2 Amp
  200. Too much gain - help with changing driver tube.
  201. EL95 SE schematic wanted
  202. good value (i.e. cheap) OPT in uk?
  203. Input xfmr, diff stage, CCS questions
  204. Theoretical OPT question
  205. input/driver stage for kt88/6550
  206. thyratron switching
  207. Making component choices (6V6/EL84 PP)
  208. Which socket for a 5Y3??
  209. using #47 in p-p
  210. 6463-12b4a srpp?
  211. Need some help identifying which tubes are suitable
  212. Tube Priceing
  213. edcor output transformer advice
  214. Non top-cap tubes for plasma tweeters
  215. Intermittent Static on ARC REF 3 Preamp
  216. Have you guys seen this yet?
  217. ECC88 heater overvoltage damage?
  218. Recommended designs
  219. Aikido Phono PCB Modifications
  220. Need Power supply advice for Andreas 845
  221. Phonodude question
  222. Power Supply for Aikido Phono Pre
  223. Completed New Combo Amplifier
  224. Want to Build my first Tube Amp
  225. single tube amp ~pspice problem
  226. Modding a tonebone to switch to pentode triode operation?Can this be done??
  227. Relyon KT88/EL34 SE issue, schem attached
  228. Search 35T Schematic
  229. Pete Millett Low-Mu Triode Preamp
  230. thyratron rectifier
  231. Need help making some choices on what to build
  232. A2 curves and curvecaptor.
  233. damper diodes ....
  234. Different Rectifier Warmup Times
  235. stupid question of the day
  236. Fisher 400 Output Transformers
  237. Tube amp repair
  238. Hi-end 845 with only two stage
  239. PL519 Heaters in series blow fuse
  240. Looking for parts to tinker with
  241. KT88 Recommendations?
  242. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  243. Mirror of Steve Bench's site
  244. Quick Question About RCA Input
  245. Built an amp kit!
  246. Holy Smoking Toroid Winder
  247. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  248. why do tubes have a treble lost ???
  249. Low Frequency Mains Noise
  250. Help modifying circuit

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