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  1. Bias problem- 1 Socket shows extremely low bias!
  2. ECC88 vs E88CC
  3. Finally, back to my Simple SE project
  4. can trafo laminations rest on chassis?
  5. Ping Poindexter - 6SN7 Moebius Linestage Question
  6. More information wanted on this Phase Splitter Circuit
  7. Converting tube tester to Mutual Conductance
  8. 6UA4-GTA Question
  9. oscilloscope turned guitar amp?
  10. LED cathode bias - how to pick LED?
  11. preamp question
  12. Hickok tube tester calibration help needed
  13. Watch this !
  14. any Welborne Labs Ultrapath owners ?
  15. McIntosh transformer turns ratio
  16. 12E1 & S11E12 as a KT88 substitution
  17. Dynaco ST-70 Triode Conversion Techniques
  18. Larry Moore power supply
  19. SE to Balanced tube preamp idea
  20. Help on Cascode DN2540 CCS
  21. Kt88 Pp
  22. What was the diy world like before the internet?
  23. Updated my website
  24. Marshall AVT 50 preamp gain/distortion increase
  25. Interstage question in 6ac5G design
  26. Using a powered sub with my tube amp
  27. 807pp suggestions and guidance please
  28. 2 stage IT coupled SE suggestions.?
  29. WE429A similar to 6V6?
  30. 6FQ7 in RH84
  31. Deluxe Reverb Re-Issue High Frequency Noise.
  32. What splitter for this design ?
  33. preamp kit?
  34. PP power supply design questions
  35. Hammond 1650P for KT88 PP - any experience?
  36. Gibson tube amp mod for JAZZ
  37. Cathode Bypass caps - how to choose?
  38. Marantz 9 output power switch
  39. Single ended KT88 question
  40. Anyone Have a Hickok 800A
  41. Please post your experience with 6C45 and 6H30
  42. Series-Shunt Regulator I need
  43. Hammond Gripe
  44. capacitors in series- what value balancing resistors?
  45. Substituting Pentode for Triode
  46. Pentode Driver Calculations
  47. DHT and speed issues
  48. Aikido vibration issue
  49. Modified Salas Mosfet Shunt Reg
  50. What if O.H. Schade had MOSFETs?
  51. Please Look at my circuit
  52. EL34 tube amp that needs work on
  53. question on differential stage
  54. Need help with my ST70, decrease in one channel
  55. Diff drive
  56. Stereo Aikido GND help
  57. Hashimoto HL-20K-6 Line Output Transformers
  58. What is the RIGHT way to calculate the Value of the cathode resistor?
  59. Kt88 Se
  60. ping Tom Schlangen
  61. Found An Old Transformer, Now What???
  62. Brook 22A restoration, HELP!!
  63. Optimal operating point for 7N7/6SN7?
  64. Loudness Control Calc - Help Please
  65. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  66. New 300B PP amp completed, phase shift questions
  67. One more PSU2 question
  68. 5U4 Darling power TX advice needed
  69. how to optimize this pentode PP (PP1 clone with S11E12)
  70. Can I change the input to a 6SL7?
  71. Outputtransformer to IGA 6550C ULPP
  72. Question on use PSUD2 software
  73. Please add to my confusion re stepup transformers
  74. filament power supply question
  75. Major Hum Problem
  76. FARMER LAMP amp
  77. Valve amp "master class"
  78. Toroid power transformers - are they a good idea?
  79. EL84 SE amplifier
  80. Gain Problems
  81. My SE KT-88 Build thread
  82. Rolling da(rling's) 6j4wa
  83. Phono pre amp
  84. Michealson Audio Da Vinci Preamp
  85. Acrosound PP 6550: Any Advice?
  86. PS idea: isolating transformer from load
  87. K-16LS Help Please
  88. 6N6P-I life-time
  89. Filament Xformer woes...
  90. The Use of 1:1 Input Transformers in Linestages
  91. 12hg7 vs 12hn7a
  92. Anyone familiar with VAC PA 90C1?
  93. Help restore an RCP 413 tube tester
  94. voltage reg make heat sink live. Bad idea?
  95. Audio Innovations series 800 reactivation + some mods
  96. Using 2 rectifiers off 1 power supply
  97. Tube power supply
  98. Improving low bass of a Scott 299c
  99. 1939 Radioshack Catalog online...Anyone have a time machine?
  100. VCCS filament supply for 813
  101. digital volume control
  102. Philips AD3800AM and AD9710AM clones
  103. MTP6N60E replacement
  104. Upgrading output transformers
  105. Cascode RIAA
  106. need a manual for selectron model 40 tube tester??
  107. Volume swinging problem
  108. How to use the almost Group buy Diyaudio CCS circuit
  109. Big voltage swing tube recommendation please
  110. Morgan Jones KT88 PP
  111. Mystery Tube Amplifier -- Help?????
  112. tube tester how can i tell if have match pair?
  113. Photo flash caps for the power supply?
  114. Finding bias point in PP fixed bias
  115. 6V6 Push Pull
  116. Transformer Mounting Braces
  117. Rozenblit 6as7 otl questions
  118. Genesis pre-amplifier schematic wanted
  119. 6H30PI/6922 Preamp Circuit
  120. PFB line amp
  121. 2A3C Mono plate: Shuguang Or Sovtek?
  122. Any kit reccomendation would be helpful
  123. Cleaning tubes...
  124. Anyone recognise these tubes...
  125. big ol' 26lb. output transformer...
  126. ECC88 Help
  127. European Triode Festival ETF08: still some places vacant!
  128. Dynaco MK IV Mystery
  129. 6as7/6080 Se Otl
  130. 6GW8 substitute tube 6BM8?
  131. Choke question
  132. Screen driven output stage
  133. Peavey Delta Blues Reverb Frustration
  134. 2a3 parallel driven 6sn7 schem
  135. WMD or Big Freakin Power Supply
  136. DIY My tube tester
  137. Help! May have dropped 12sn7 in place of 6sn7
  138. Got a bucketload of tubes, need identification
  139. Help from Allen Wright SuperReg owner
  140. Moscode 600
  141. Signal caps to keep on hand
  142. pin-compatible EF86 alternative?
  143. Capless Parafeed (with apologies to SY)
  144. T Eaton Viking schematics?
  145. S5 K-16LS mods, tweaks?
  146. 5687 fully balanced line stage
  147. Subminiature sockets
  148. What Do I Have Here?
  149. Bad vacuum?
  150. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  151. Balanced 24V Aikido question
  152. How to wire a 'Buck' transformer
  153. OT question - will it work?
  154. ID Unknown Tube
  155. Time delay start board for tube amps
  156. Hum reduction ideas (again)
  157. Utc Ls-33
  158. K-16ls
  159. Potential valve damping tweak
  160. Conversion Tube PA and Bass Tone
  161. Wanted. Simple EL34 Push Pull Design
  162. PCB advice
  163. Hybrid voltage quadrupler?
  164. my fu80 amp
  165. Pre-amp for BeoMaster
  166. Question re: chokes
  167. Inundated Electrolytics
  168. power transformer recommendation
  169. PS decoupling cap placement
  170. USSR Russian Caps. KBG-MN or K75-24?
  171. #10SE Tested project
  172. schematics help
  173. HF Decoupling Caps questions
  174. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  175. Useful power transformer design thread on Analogue
  176. Understanding Simple SE design choices
  177. Fender Pro Amp
  178. Hewlet Packard transformer
  179. 6BG6 for KT66
  180. new learning
  181. TV-7D/U Tube setting --- 6550
  182. ecc40 LTP
  183. Latest incarnation of music angel kt88
  184. Tubelab SE oscillation?
  185. 6SL7 5E3 - together at last?
  186. AN Shinri schematic wanted
  187. Found a box of old toobs
  188. Choke input filter LF noise
  189. Aikido line stage - plus phono line stage
  190. Hook up wire?
  191. Irritating problem with soft start
  192. OTL with 6AN5
  193. Mono Blocs Completed...
  194. Magic Eye for solid state Tuner?
  195. a question about drive power
  196. converting BAL to UNBAL using tubes and without transformers
  197. Aikiado question
  198. Top cap tubes+ arc welder
  199. Small beginner amplifier and hello :)
  200. Blackburn MicroTech TechTube(TM) Valves update!
  201. Resistor setup for integrated amp & headphones?
  202. Brook 2A3 PP amp ID help
  203. heater voltage
  204. kobayashi 300B push-pull
  205. Triode strapping a tetrode...
  206. Any info on 3572 Half wave Rectier
  207. Question Conrad Johnson reg. psu?
  208. Another 300B SE
  209. 7-pin Low Rp tube
  210. S-5 K-16LS Kit arrived in Germany !!
  211. Transcendar RIP?
  212. 6N6P in an Aikido?
  213. Were can i bay a Telefunken 6ak5 ?
  214. SE 245 driverstage
  215. 12ax7 srpp dac output
  216. How this circuit works (Baby Huey type)
  217. New tubeamp
  218. Snubber caps
  219. Counterpoint sa220
  220. Resistor before tube rectifier
  221. TCJ Push-Pull calculator v2
  222. Heathkit AG-9A audio generator schematic !!!
  223. Sources for James Transformers
  224. High Voltage Soldering (IPC Standards?)
  225. Speakers for Flea Powered Amps <1.5W
  226. Opinions on Allen & Bradley Carbon Composite resistors
  227. wich tube is best for the yaqin cd buffer ?
  228. Mikael Abdellah's SE KT88 bass response + tightness
  229. How best to use the PSU xformer I have
  230. 6L6GC AB2 Amp
  231. Kofi Annan in: "I'd Like Me a Mic Pre!"
  232. Too much gain - help with changing driver tube.
  233. EL95 SE schematic wanted
  234. test settings hickok i177B for 5ar4/gz34
  235. Gibson Ga-20 rvt reverb problems
  236. good value (i.e. cheap) OPT in uk?
  237. Input xfmr, diff stage, CCS questions
  238. Theoretical OPT question
  239. input/driver stage for kt88/6550
  240. thyratron switching
  241. Making component choices (6V6/EL84 PP)
  242. Which socket for a 5Y3??
  243. using #47 in p-p
  244. 6463-12b4a srpp?
  245. Need some help identifying which tubes are suitable
  246. Tube Priceing
  247. edcor output transformer advice
  248. Non top-cap tubes for plasma tweeters
  249. Intermittent Static on ARC REF 3 Preamp
  250. Have you guys seen this yet?

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