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  1. Sakuma-San Pilgramage?
  2. Any HP 8903 audio analyzer owners?
  3. xL508/6KW6/17KW6
  4. 6C45 phono input only?
  5. Initial Thoughts for "Mr. Piggy" SE Amp w/Screen Driven 6P45S
  6. Switch box using VR glow tubes
  7. Ideas for a simple 6080/6AS7 Push-Pull amplifier
  8. TJ 845 Tubes
  9. Looking for a web tutorial on basic calculations
  10. Berman linestage- do I reference heaters or not?!
  11. calculating gain
  12. Simple EL84 amp...
  13. Tube Direct Box - Got design?
  14. Raphaelite Audio Transformers & Sino Tube Amplifier Kits - What's your experience ?
  15. S-5 Electronics K-16LS & 6V6 Substitution
  16. how to calculate current requirement
  17. Stancor Transformer Data Sheet Needed
  18. 6BL7 replecement
  19. Toroid PT question
  20. New SET Amp
  21. What do you guys think..
  22. Output Stage in MJ Question
  23. Input voltage on an integrated tube amp
  24. 6sf5 = 1/2 12ax7?
  25. Observations of amplifier sound
  26. Sovtek KT88
  27. 24 or 24a as driver in 2 stage..?
  28. Too high transformator voltages...
  29. This power supply ok?
  30. 300B valves
  31. Modulation transformer for a driver transformer?
  32. Is 6V DC too low for heater filament?
  33. mundorff 0.47 silver in oil
  34. need manual for heathkit sp2
  35. Interresting Quiz. Which tube is this?
  36. el84 burn in time ?
  37. Tube Amp Compensation Q
  38. Quad II Advice
  39. Bias problem- 1 Socket shows extremely low bias!
  40. ECC88 vs E88CC
  41. Finally, back to my Simple SE project
  42. can trafo laminations rest on chassis?
  43. Ping Poindexter - 6SN7 Moebius Linestage Question
  44. More information wanted on this Phase Splitter Circuit
  45. Converting tube tester to Mutual Conductance
  46. 6UA4-GTA Question
  47. oscilloscope turned guitar amp?
  48. LED cathode bias - how to pick LED?
  49. preamp question
  50. Hickok tube tester calibration help needed
  51. Watch this !
  52. any Welborne Labs Ultrapath owners ?
  53. McIntosh transformer turns ratio
  54. 12E1 & S11E12 as a KT88 substitution
  55. Dynaco ST-70 Triode Conversion Techniques
  56. Larry Moore power supply
  57. SE to Balanced tube preamp idea
  58. Help on Cascode DN2540 CCS
  59. Kt88 Pp
  60. What was the diy world like before the internet?
  61. Updated my website
  62. Marshall AVT 50 preamp gain/distortion increase
  63. Interstage question in 6ac5G design
  64. Using a powered sub with my tube amp
  65. 807pp suggestions and guidance please
  66. 2 stage IT coupled SE suggestions.?
  67. WE429A similar to 6V6?
  68. 6FQ7 in RH84
  69. Deluxe Reverb Re-Issue High Frequency Noise.
  70. What splitter for this design ?
  71. preamp kit?
  72. PP power supply design questions
  73. Hammond 1650P for KT88 PP - any experience?
  74. Gibson tube amp mod for JAZZ
  75. Cathode Bypass caps - how to choose?
  76. Marantz 9 output power switch
  77. Single ended KT88 question
  78. Anyone Have a Hickok 800A
  79. Please post your experience with 6C45 and 6H30
  80. Series-Shunt Regulator I need
  81. Hammond Gripe
  82. capacitors in series- what value balancing resistors?
  83. Substituting Pentode for Triode
  84. Pentode Driver Calculations
  85. DHT and speed issues
  86. Aikido vibration issue
  87. Modified Salas Mosfet Shunt Reg
  88. What if O.H. Schade had MOSFETs?
  89. Please Look at my circuit
  90. EL34 tube amp that needs work on
  91. question on differential stage
  92. Need help with my ST70, decrease in one channel
  93. Diff drive
  94. Stereo Aikido GND help
  95. Hashimoto HL-20K-6 Line Output Transformers
  96. What is the RIGHT way to calculate the Value of the cathode resistor?
  97. Kt88 Se
  98. ping Tom Schlangen
  99. Found An Old Transformer, Now What???
  100. Brook 22A restoration, HELP!!
  101. Optimal operating point for 7N7/6SN7?
  102. Loudness Control Calc - Help Please
  103. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  104. New 300B PP amp completed, phase shift questions
  105. One more PSU2 question
  106. 5U4 Darling power TX advice needed
  107. how to optimize this pentode PP (PP1 clone with S11E12)
  108. Can I change the input to a 6SL7?
  109. Outputtransformer to IGA 6550C ULPP
  110. Question on use PSUD2 software
  111. Please add to my confusion re stepup transformers
  112. filament power supply question
  113. Major Hum Problem
  114. FARMER LAMP amp
  115. Valve amp "master class"
  116. Toroid power transformers - are they a good idea?
  117. EL84 SE amplifier
  118. Gain Problems
  119. My SE KT-88 Build thread
  120. Rolling da(rling's) 6j4wa
  121. Phono pre amp
  122. Michealson Audio Da Vinci Preamp
  123. Acrosound PP 6550: Any Advice?
  124. PS idea: isolating transformer from load
  125. K-16LS Help Please
  126. 6N6P-I life-time
  127. Filament Xformer woes...
  128. The Use of 1:1 Input Transformers in Linestages
  129. 12hg7 vs 12hn7a
  130. Anyone familiar with VAC PA 90C1?
  131. Help restore an RCP 413 tube tester
  132. voltage reg make heat sink live. Bad idea?
  133. Audio Innovations series 800 reactivation + some mods
  134. Using 2 rectifiers off 1 power supply
  135. Tube power supply
  136. Improving low bass of a Scott 299c
  137. 1939 Radioshack Catalog online...Anyone have a time machine?
  138. VCCS filament supply for 813
  139. digital volume control
  140. Philips AD3800AM and AD9710AM clones
  141. MTP6N60E replacement
  142. Upgrading output transformers
  143. Cascode RIAA
  144. need a manual for selectron model 40 tube tester??
  145. Volume swinging problem
  146. How to use the almost Group buy Diyaudio CCS circuit
  147. Big voltage swing tube recommendation please
  148. Morgan Jones KT88 PP
  149. Mystery Tube Amplifier -- Help?????
  150. tube tester how can i tell if have match pair?
  151. Photo flash caps for the power supply?
  152. Finding bias point in PP fixed bias
  153. 6V6 Push Pull
  154. Transformer Mounting Braces
  155. Rozenblit 6as7 otl questions
  156. Genesis pre-amplifier schematic wanted
  157. 6H30PI/6922 Preamp Circuit
  158. PFB line amp
  159. 2A3C Mono plate: Shuguang Or Sovtek?
  160. Any kit reccomendation would be helpful
  161. Cleaning tubes...
  162. Anyone recognise these tubes...
  163. big ol' 26lb. output transformer...
  164. ECC88 Help
  165. European Triode Festival ETF08: still some places vacant!
  166. Dynaco MK IV Mystery
  167. 6as7/6080 Se Otl
  168. 6GW8 substitute tube 6BM8?
  169. Choke question
  170. Screen driven output stage
  171. Peavey Delta Blues Reverb Frustration
  172. 2a3 parallel driven 6sn7 schem
  173. WMD or Big Freakin Power Supply
  174. DIY My tube tester
  175. Help! May have dropped 12sn7 in place of 6sn7
  176. Got a bucketload of tubes, need identification
  177. Help from Allen Wright SuperReg owner
  178. Moscode 600
  179. Signal caps to keep on hand
  180. pin-compatible EF86 alternative?
  181. Capless Parafeed (with apologies to SY)
  182. T Eaton Viking schematics?
  183. S5 K-16LS mods, tweaks?
  184. 5687 fully balanced line stage
  185. Subminiature sockets
  186. What Do I Have Here?
  187. Bad vacuum?
  188. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  189. Balanced 24V Aikido question
  190. How to wire a 'Buck' transformer
  191. OT question - will it work?
  192. ID Unknown Tube
  193. Time delay start board for tube amps
  194. Hum reduction ideas (again)
  195. Utc Ls-33
  196. K-16ls
  197. Potential valve damping tweak
  198. Conversion Tube PA and Bass Tone
  199. Wanted. Simple EL34 Push Pull Design
  200. PCB advice
  201. Hybrid voltage quadrupler?
  202. my fu80 amp
  203. Pre-amp for BeoMaster
  204. Question re: chokes
  205. Inundated Electrolytics
  206. power transformer recommendation
  207. PS decoupling cap placement
  208. USSR Russian Caps. KBG-MN or K75-24?
  209. #10SE Tested project
  210. schematics help
  211. HF Decoupling Caps questions
  212. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  213. Useful power transformer design thread on Analogue
  214. Understanding Simple SE design choices
  215. Fender Pro Amp
  216. Hewlet Packard transformer
  217. 6BG6 for KT66
  218. new learning
  219. TV-7D/U Tube setting --- 6550
  220. ecc40 LTP
  221. Latest incarnation of music angel kt88
  222. Tubelab SE oscillation?
  223. 6SL7 5E3 - together at last?
  224. AN Shinri schematic wanted
  225. Found a box of old toobs
  226. Choke input filter LF noise
  227. Aikido line stage - plus phono line stage
  228. Hook up wire?
  229. Irritating problem with soft start
  230. OTL with 6AN5
  231. Mono Blocs Completed...
  232. Magic Eye for solid state Tuner?
  233. a question about drive power
  234. converting BAL to UNBAL using tubes and without transformers
  235. Aikiado question
  236. Top cap tubes+ arc welder
  237. Small beginner amplifier and hello :)
  238. Blackburn MicroTech TechTube(TM) Valves update!
  239. Resistor setup for integrated amp & headphones?
  240. Brook 2A3 PP amp ID help
  241. heater voltage
  242. kobayashi 300B push-pull
  243. Triode strapping a tetrode...
  244. Any info on 3572 Half wave Rectier
  245. Question Conrad Johnson reg. psu?
  246. Another 300B SE
  247. 7-pin Low Rp tube
  248. S-5 K-16LS Kit arrived in Germany !!
  249. Transcendar RIP?
  250. 6N6P in an Aikido?

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