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  1. SE to Balanced tube preamp idea
  2. Help on Cascode DN2540 CCS
  3. Kt88 Pp
  4. What was the diy world like before the internet?
  5. Updated my website
  6. Interstage question in 6ac5G design
  7. Using a powered sub with my tube amp
  8. 807pp suggestions and guidance please
  9. 2 stage IT coupled SE suggestions.?
  10. WE429A similar to 6V6?
  11. 6FQ7 in RH84
  12. What splitter for this design ?
  13. preamp kit?
  14. PP power supply design questions
  15. Hammond 1650P for KT88 PP - any experience?
  16. Cathode Bypass caps - how to choose?
  17. Marantz 9 output power switch
  18. Single ended KT88 question
  19. Please post your experience with 6C45 and 6H30
  20. Series-Shunt Regulator I need
  21. Hammond Gripe
  22. capacitors in series- what value balancing resistors?
  23. Substituting Pentode for Triode
  24. Pentode Driver Calculations
  25. DHT and speed issues
  26. Aikido vibration issue
  27. Modified Salas Mosfet Shunt Reg
  28. What if O.H. Schade had MOSFETs?
  29. Please Look at my circuit
  30. EL34 tube amp that needs work on
  31. question on differential stage
  32. Need help with my ST70, decrease in one channel
  33. Diff drive
  34. Stereo Aikido GND help
  35. Hashimoto HL-20K-6 Line Output Transformers
  36. What is the RIGHT way to calculate the Value of the cathode resistor?
  37. Kt88 Se
  38. ping Tom Schlangen
  39. Found An Old Transformer, Now What???
  40. Brook 22A restoration, HELP!!
  41. Optimal operating point for 7N7/6SN7?
  42. Loudness Control Calc - Help Please
  43. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  44. New 300B PP amp completed, phase shift questions
  45. One more PSU2 question
  46. 5U4 Darling power TX advice needed
  47. how to optimize this pentode PP (PP1 clone with S11E12)
  48. Can I change the input to a 6SL7?
  49. Outputtransformer to IGA 6550C ULPP
  50. Question on use PSUD2 software
  51. Please add to my confusion re stepup transformers
  52. filament power supply question
  53. Major Hum Problem
  54. FARMER LAMP amp
  55. Valve amp "master class"
  56. Toroid power transformers - are they a good idea?
  57. EL84 SE amplifier
  58. Gain Problems
  59. My SE KT-88 Build thread
  60. Rolling da(rling's) 6j4wa
  61. Phono pre amp
  62. Michealson Audio Da Vinci Preamp
  63. Acrosound PP 6550: Any Advice?
  64. PS idea: isolating transformer from load
  65. K-16LS Help Please
  66. 6N6P-I life-time
  67. Filament Xformer woes...
  68. The Use of 1:1 Input Transformers in Linestages
  69. 12hg7 vs 12hn7a
  70. Anyone familiar with VAC PA 90C1?
  71. voltage reg make heat sink live. Bad idea?
  72. Audio Innovations series 800 reactivation + some mods
  73. Using 2 rectifiers off 1 power supply
  74. Tube power supply
  75. Improving low bass of a Scott 299c
  76. 1939 Radioshack Catalog online...Anyone have a time machine?
  77. VCCS filament supply for 813
  78. Philips AD3800AM and AD9710AM clones
  79. Upgrading output transformers
  80. Cascode RIAA
  81. Volume swinging problem
  82. How to use the almost Group buy Diyaudio CCS circuit
  83. Big voltage swing tube recommendation please
  84. Morgan Jones KT88 PP
  85. Mystery Tube Amplifier -- Help?????
  86. Finding bias point in PP fixed bias
  87. 6V6 Push Pull
  88. Rozenblit 6as7 otl questions
  89. Genesis pre-amplifier schematic wanted
  90. 6H30PI/6922 Preamp Circuit
  91. PFB line amp
  92. 2A3C Mono plate: Shuguang Or Sovtek?
  93. Any kit reccomendation would be helpful
  94. Cleaning tubes...
  95. Anyone recognise these tubes...
  96. big ol' 26lb. output transformer...
  97. ECC88 Help
  98. European Triode Festival ETF08: still some places vacant!
  99. Dynaco MK IV Mystery
  100. 6as7/6080 Se Otl
  101. 6GW8 substitute tube 6BM8?
  102. Choke question
  103. Screen driven output stage
  104. 2a3 parallel driven 6sn7 schem
  105. WMD or Big Freakin Power Supply
  106. Help! May have dropped 12sn7 in place of 6sn7
  107. Got a bucketload of tubes, need identification
  108. Help from Allen Wright SuperReg owner
  109. Moscode 600
  110. Signal caps to keep on hand
  111. pin-compatible EF86 alternative?
  112. Capless Parafeed (with apologies to SY)
  113. T Eaton Viking schematics?
  114. S5 K-16LS mods, tweaks?
  115. 5687 fully balanced line stage
  116. What Do I Have Here?
  117. Bad vacuum?
  118. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  119. Balanced 24V Aikido question
  120. OT question - will it work?
  121. ID Unknown Tube
  122. Time delay start board for tube amps
  123. Hum reduction ideas (again)
  124. Utc Ls-33
  125. K-16ls
  126. Potential valve damping tweak
  127. Conversion Tube PA and Bass Tone
  128. Wanted. Simple EL34 Push Pull Design
  129. PCB advice
  130. Hybrid voltage quadrupler?
  131. my fu80 amp
  132. Pre-amp for BeoMaster
  133. Question re: chokes
  134. power transformer recommendation
  135. PS decoupling cap placement
  136. #10SE Tested project
  137. schematics help
  138. HF Decoupling Caps questions
  139. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  140. Useful power transformer design thread on Analogue
  141. Hewlet Packard transformer
  142. 6BG6 for KT66
  143. new learning
  144. TV-7D/U Tube setting --- 6550
  145. ecc40 LTP
  146. Latest incarnation of music angel kt88
  147. AN Shinri schematic wanted
  148. Found a box of old toobs
  149. Aikido line stage - plus phono line stage
  150. Irritating problem with soft start
  151. OTL with 6AN5
  152. Mono Blocs Completed...
  153. Magic Eye for solid state Tuner?
  154. a question about drive power
  155. converting BAL to UNBAL using tubes and without transformers
  156. Aikiado question
  157. Top cap tubes+ arc welder
  158. Small beginner amplifier and hello :)
  159. Blackburn MicroTech TechTube(TM) Valves update!
  160. Resistor setup for integrated amp & headphones?
  161. Brook 2A3 PP amp ID help
  162. heater voltage
  163. kobayashi 300B push-pull
  164. Triode strapping a tetrode...
  165. Any info on 3572 Half wave Rectier
  166. Question Conrad Johnson reg. psu?
  167. Another 300B SE
  168. 7-pin Low Rp tube
  169. S-5 K-16LS Kit arrived in Germany !!
  170. Transcendar RIP?
  171. 6N6P in an Aikido?
  172. Were can i bay a Telefunken 6ak5 ?
  173. SE 245 driverstage
  174. 12ax7 srpp dac output
  175. How this circuit works (Baby Huey type)
  176. New tubeamp
  177. Snubber caps
  178. Counterpoint sa220
  179. Resistor before tube rectifier
  180. TCJ Push-Pull calculator v2
  181. Sources for James Transformers
  182. High Voltage Soldering (IPC Standards?)
  183. Speakers for Flea Powered Amps <1.5W
  184. wich tube is best for the yaqin cd buffer ?
  185. Mikael Abdellah's SE KT88 bass response + tightness
  186. How best to use the PSU xformer I have
  187. 6L6GC AB2 Amp
  188. Too much gain - help with changing driver tube.
  189. EL95 SE schematic wanted
  190. good value (i.e. cheap) OPT in uk?
  191. Input xfmr, diff stage, CCS questions
  192. Theoretical OPT question
  193. input/driver stage for kt88/6550
  194. thyratron switching
  195. Making component choices (6V6/EL84 PP)
  196. Which socket for a 5Y3??
  197. using #47 in p-p
  198. 6463-12b4a srpp?
  199. Need some help identifying which tubes are suitable
  200. Tube Priceing
  201. edcor output transformer advice
  202. Non top-cap tubes for plasma tweeters
  203. Intermittent Static on ARC REF 3 Preamp
  204. Have you guys seen this yet?
  205. ECC88 heater overvoltage damage?
  206. Recommended designs
  207. Aikido Phono PCB Modifications
  208. Need Power supply advice for Andreas 845
  209. Phonodude question
  210. Power Supply for Aikido Phono Pre
  211. Completed New Combo Amplifier
  212. Want to Build my first Tube Amp
  213. single tube amp ~pspice problem
  214. Modding a tonebone to switch to pentode triode operation?Can this be done??
  215. Relyon KT88/EL34 SE issue, schem attached
  216. Search 35T Schematic
  217. Pete Millett Low-Mu Triode Preamp
  218. thyratron rectifier
  219. Need help making some choices on what to build
  220. A2 curves and curvecaptor.
  221. damper diodes ....
  222. Different Rectifier Warmup Times
  223. stupid question of the day
  224. Fisher 400 Output Transformers
  225. Tube amp repair
  226. Hi-end 845 with only two stage
  227. PL519 Heaters in series blow fuse
  228. Looking for parts to tinker with
  229. KT88 Recommendations?
  230. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  231. Mirror of Steve Bench's site
  232. Quick Question About RCA Input
  233. Built an amp kit!
  234. Holy Smoking Toroid Winder
  235. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  236. why do tubes have a treble lost ???
  237. Low Frequency Mains Noise
  238. Help modifying circuit
  239. Ever heard sth like this?
  240. dual volume control
  241. Need DIY help in Los Angeles area with tube preamp
  242. 6c19p se otl
  243. pt
  244. "Killer" Screen Driven Push-Pull Amp Initial Queries
  245. fixed vs. cathode bias
  246. RH84 Push pull?
  247. Cheapfield project
  248. heater connection problem
  249. What to do with this PP OPT?
  250. Question about Bridging

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