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  1. any Welborne Labs Ultrapath owners ?
  2. McIntosh transformer turns ratio
  3. 12E1 & S11E12 as a KT88 substitution
  4. Dynaco ST-70 Triode Conversion Techniques
  5. Larry Moore power supply
  6. SE to Balanced tube preamp idea
  7. Help on Cascode DN2540 CCS
  8. Kt88 Pp
  9. What was the diy world like before the internet?
  10. Updated my website
  11. Marshall AVT 50 preamp gain/distortion increase
  12. Interstage question in 6ac5G design
  13. Using a powered sub with my tube amp
  14. 807pp suggestions and guidance please
  15. 2 stage IT coupled SE suggestions.?
  16. WE429A similar to 6V6?
  17. 6FQ7 in RH84
  18. Deluxe Reverb Re-Issue High Frequency Noise.
  19. What splitter for this design ?
  20. preamp kit?
  21. PP power supply design questions
  22. Hammond 1650P for KT88 PP - any experience?
  23. Gibson tube amp mod for JAZZ
  24. Cathode Bypass caps - how to choose?
  25. Marantz 9 output power switch
  26. Single ended KT88 question
  27. Anyone Have a Hickok 800A
  28. Please post your experience with 6C45 and 6H30
  29. Series-Shunt Regulator I need
  30. Hammond Gripe
  31. capacitors in series- what value balancing resistors?
  32. Substituting Pentode for Triode
  33. Pentode Driver Calculations
  34. DHT and speed issues
  35. Aikido vibration issue
  36. Modified Salas Mosfet Shunt Reg
  37. What if O.H. Schade had MOSFETs?
  38. Please Look at my circuit
  39. EL34 tube amp that needs work on
  40. question on differential stage
  41. Need help with my ST70, decrease in one channel
  42. Diff drive
  43. Stereo Aikido GND help
  44. Hashimoto HL-20K-6 Line Output Transformers
  45. What is the RIGHT way to calculate the Value of the cathode resistor?
  46. Kt88 Se
  47. ping Tom Schlangen
  48. Found An Old Transformer, Now What???
  49. Brook 22A restoration, HELP!!
  50. Optimal operating point for 7N7/6SN7?
  51. Loudness Control Calc - Help Please
  52. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  53. New 300B PP amp completed, phase shift questions
  54. One more PSU2 question
  55. 5U4 Darling power TX advice needed
  56. how to optimize this pentode PP (PP1 clone with S11E12)
  57. Can I change the input to a 6SL7?
  58. Outputtransformer to IGA 6550C ULPP
  59. Question on use PSUD2 software
  60. Please add to my confusion re stepup transformers
  61. filament power supply question
  62. Major Hum Problem
  63. FARMER LAMP amp
  64. Valve amp "master class"
  65. Toroid power transformers - are they a good idea?
  66. EL84 SE amplifier
  67. Gain Problems
  68. My SE KT-88 Build thread
  69. Rolling da(rling's) 6j4wa
  70. Phono pre amp
  71. Michealson Audio Da Vinci Preamp
  72. Acrosound PP 6550: Any Advice?
  73. PS idea: isolating transformer from load
  74. K-16LS Help Please
  75. 6N6P-I life-time
  76. Filament Xformer woes...
  77. The Use of 1:1 Input Transformers in Linestages
  78. 12hg7 vs 12hn7a
  79. Anyone familiar with VAC PA 90C1?
  80. Help restore an RCP 413 tube tester
  81. voltage reg make heat sink live. Bad idea?
  82. Audio Innovations series 800 reactivation + some mods
  83. Using 2 rectifiers off 1 power supply
  84. Tube power supply
  85. Improving low bass of a Scott 299c
  86. 1939 Radioshack Catalog online...Anyone have a time machine?
  87. VCCS filament supply for 813
  88. digital volume control
  89. Philips AD3800AM and AD9710AM clones
  90. MTP6N60E replacement
  91. Upgrading output transformers
  92. Cascode RIAA
  93. need a manual for selectron model 40 tube tester??
  94. Volume swinging problem
  95. How to use the almost Group buy Diyaudio CCS circuit
  96. Big voltage swing tube recommendation please
  97. Morgan Jones KT88 PP
  98. Mystery Tube Amplifier -- Help?????
  99. tube tester how can i tell if have match pair?
  100. Photo flash caps for the power supply?
  101. Finding bias point in PP fixed bias
  102. 6V6 Push Pull
  103. Transformer Mounting Braces
  104. Rozenblit 6as7 otl questions
  105. Genesis pre-amplifier schematic wanted
  106. 6H30PI/6922 Preamp Circuit
  107. PFB line amp
  108. 2A3C Mono plate: Shuguang Or Sovtek?
  109. Any kit reccomendation would be helpful
  110. Cleaning tubes...
  111. Anyone recognise these tubes...
  112. big ol' 26lb. output transformer...
  113. ECC88 Help
  114. European Triode Festival ETF08: still some places vacant!
  115. Dynaco MK IV Mystery
  116. 6as7/6080 Se Otl
  117. 6GW8 substitute tube 6BM8?
  118. Choke question
  119. Screen driven output stage
  120. Peavey Delta Blues Reverb Frustration
  121. 2a3 parallel driven 6sn7 schem
  122. WMD or Big Freakin Power Supply
  123. DIY My tube tester
  124. Help! May have dropped 12sn7 in place of 6sn7
  125. Got a bucketload of tubes, need identification
  126. Help from Allen Wright SuperReg owner
  127. Moscode 600
  128. Signal caps to keep on hand
  129. pin-compatible EF86 alternative?
  130. Capless Parafeed (with apologies to SY)
  131. T Eaton Viking schematics?
  132. S5 K-16LS mods, tweaks?
  133. 5687 fully balanced line stage
  134. Subminiature sockets
  135. What Do I Have Here?
  136. Bad vacuum?
  137. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  138. Balanced 24V Aikido question
  139. How to wire a 'Buck' transformer
  140. OT question - will it work?
  141. ID Unknown Tube
  142. Time delay start board for tube amps
  143. Hum reduction ideas (again)
  144. Utc Ls-33
  145. K-16ls
  146. Potential valve damping tweak
  147. Conversion Tube PA and Bass Tone
  148. Wanted. Simple EL34 Push Pull Design
  149. PCB advice
  150. Hybrid voltage quadrupler?
  151. my fu80 amp
  152. Pre-amp for BeoMaster
  153. Question re: chokes
  154. Inundated Electrolytics
  155. power transformer recommendation
  156. PS decoupling cap placement
  157. USSR Russian Caps. KBG-MN or K75-24?
  158. #10SE Tested project
  159. schematics help
  160. HF Decoupling Caps questions
  161. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  162. Useful power transformer design thread on Analogue
  163. Understanding Simple SE design choices
  164. Fender Pro Amp
  165. Hewlet Packard transformer
  166. 6BG6 for KT66
  167. new learning
  168. TV-7D/U Tube setting --- 6550
  169. ecc40 LTP
  170. Latest incarnation of music angel kt88
  171. Tubelab SE oscillation?
  172. 6SL7 5E3 - together at last?
  173. AN Shinri schematic wanted
  174. Found a box of old toobs
  175. Choke input filter LF noise
  176. Aikido line stage - plus phono line stage
  177. Hook up wire?
  178. Irritating problem with soft start
  179. OTL with 6AN5
  180. Mono Blocs Completed...
  181. Magic Eye for solid state Tuner?
  182. a question about drive power
  183. converting BAL to UNBAL using tubes and without transformers
  184. Aikiado question
  185. Top cap tubes+ arc welder
  186. Small beginner amplifier and hello :)
  187. Blackburn MicroTech TechTube(TM) Valves update!
  188. Resistor setup for integrated amp & headphones?
  189. Brook 2A3 PP amp ID help
  190. heater voltage
  191. kobayashi 300B push-pull
  192. Triode strapping a tetrode...
  193. Any info on 3572 Half wave Rectier
  194. Question Conrad Johnson reg. psu?
  195. Another 300B SE
  196. 7-pin Low Rp tube
  197. S-5 K-16LS Kit arrived in Germany !!
  198. Transcendar RIP?
  199. 6N6P in an Aikido?
  200. Were can i bay a Telefunken 6ak5 ?
  201. SE 245 driverstage
  202. 12ax7 srpp dac output
  203. How this circuit works (Baby Huey type)
  204. New tubeamp
  205. Snubber caps
  206. Counterpoint sa220
  207. Resistor before tube rectifier
  208. TCJ Push-Pull calculator v2
  209. Heathkit AG-9A audio generator schematic !!!
  210. Sources for James Transformers
  211. High Voltage Soldering (IPC Standards?)
  212. Speakers for Flea Powered Amps <1.5W
  213. Opinions on Allen & Bradley Carbon Composite resistors
  214. wich tube is best for the yaqin cd buffer ?
  215. Mikael Abdellah's SE KT88 bass response + tightness
  216. How best to use the PSU xformer I have
  217. 6L6GC AB2 Amp
  218. Kofi Annan in: "I'd Like Me a Mic Pre!"
  219. Too much gain - help with changing driver tube.
  220. EL95 SE schematic wanted
  221. test settings hickok i177B for 5ar4/gz34
  222. Gibson Ga-20 rvt reverb problems
  223. good value (i.e. cheap) OPT in uk?
  224. Input xfmr, diff stage, CCS questions
  225. Theoretical OPT question
  226. input/driver stage for kt88/6550
  227. thyratron switching
  228. Making component choices (6V6/EL84 PP)
  229. Which socket for a 5Y3??
  230. using #47 in p-p
  231. 6463-12b4a srpp?
  232. Need some help identifying which tubes are suitable
  233. Tube Priceing
  234. edcor output transformer advice
  235. Non top-cap tubes for plasma tweeters
  236. Intermittent Static on ARC REF 3 Preamp
  237. Have you guys seen this yet?
  238. ECC88 heater overvoltage damage?
  239. Recommended designs
  240. Aikido Phono PCB Modifications
  241. Need Power supply advice for Andreas 845
  242. Phonodude question
  243. Power Supply for Aikido Phono Pre
  244. Completed New Combo Amplifier
  245. Want to Build my first Tube Amp
  246. single tube amp ~pspice problem
  247. Modding a tonebone to switch to pentode triode operation?Can this be done??
  248. Relyon KT88/EL34 SE issue, schem attached
  249. Search 35T Schematic
  250. Hickok 600A, shattered mercury rectifier...

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