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  1. What do you guys think..
  2. Output Stage in MJ Question
  3. Input voltage on an integrated tube amp
  4. 6sf5 = 1/2 12ax7?
  5. Observations of amplifier sound
  6. Sovtek KT88
  7. 24 or 24a as driver in 2 stage..?
  8. Too high transformator voltages...
  9. This power supply ok?
  10. 300B valves
  11. Modulation transformer for a driver transformer?
  12. Is 6V DC too low for heater filament?
  13. mundorff 0.47 silver in oil
  14. need manual for heathkit sp2
  15. Interresting Quiz. Which tube is this?
  16. el84 burn in time ?
  17. Tube Amp Compensation Q
  18. Quad II Advice
  19. Bias problem- 1 Socket shows extremely low bias!
  20. ECC88 vs E88CC
  21. Finally, back to my Simple SE project
  22. can trafo laminations rest on chassis?
  23. Ping Poindexter - 6SN7 Moebius Linestage Question
  24. More information wanted on this Phase Splitter Circuit
  25. Converting tube tester to Mutual Conductance
  26. 6UA4-GTA Question
  27. oscilloscope turned guitar amp?
  28. LED cathode bias - how to pick LED?
  29. preamp question
  30. Hickok tube tester calibration help needed
  31. Watch this !
  32. any Welborne Labs Ultrapath owners ?
  33. McIntosh transformer turns ratio
  34. 12E1 & S11E12 as a KT88 substitution
  35. Dynaco ST-70 Triode Conversion Techniques
  36. Larry Moore power supply
  37. SE to Balanced tube preamp idea
  38. Help on Cascode DN2540 CCS
  39. Kt88 Pp
  40. What was the diy world like before the internet?
  41. Updated my website
  42. Marshall AVT 50 preamp gain/distortion increase
  43. Interstage question in 6ac5G design
  44. Using a powered sub with my tube amp
  45. 807pp suggestions and guidance please
  46. 2 stage IT coupled SE suggestions.?
  47. WE429A similar to 6V6?
  48. 6FQ7 in RH84
  49. Deluxe Reverb Re-Issue High Frequency Noise.
  50. What splitter for this design ?
  51. preamp kit?
  52. PP power supply design questions
  53. Hammond 1650P for KT88 PP - any experience?
  54. Gibson tube amp mod for JAZZ
  55. Cathode Bypass caps - how to choose?
  56. Marantz 9 output power switch
  57. Single ended KT88 question
  58. Anyone Have a Hickok 800A
  59. Please post your experience with 6C45 and 6H30
  60. Series-Shunt Regulator I need
  61. Hammond Gripe
  62. capacitors in series- what value balancing resistors?
  63. Substituting Pentode for Triode
  64. Pentode Driver Calculations
  65. DHT and speed issues
  66. Aikido vibration issue
  67. Modified Salas Mosfet Shunt Reg
  68. What if O.H. Schade had MOSFETs?
  69. Please Look at my circuit
  70. EL34 tube amp that needs work on
  71. question on differential stage
  72. Need help with my ST70, decrease in one channel
  73. Diff drive
  74. Stereo Aikido GND help
  75. Hashimoto HL-20K-6 Line Output Transformers
  76. What is the RIGHT way to calculate the Value of the cathode resistor?
  77. Kt88 Se
  78. ping Tom Schlangen
  79. Found An Old Transformer, Now What???
  80. Brook 22A restoration, HELP!!
  81. Optimal operating point for 7N7/6SN7?
  82. Loudness Control Calc - Help Please
  83. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  84. New 300B PP amp completed, phase shift questions
  85. One more PSU2 question
  86. 5U4 Darling power TX advice needed
  87. how to optimize this pentode PP (PP1 clone with S11E12)
  88. Can I change the input to a 6SL7?
  89. Outputtransformer to IGA 6550C ULPP
  90. Question on use PSUD2 software
  91. Please add to my confusion re stepup transformers
  92. filament power supply question
  93. Major Hum Problem
  94. FARMER LAMP amp
  95. Valve amp "master class"
  96. Toroid power transformers - are they a good idea?
  97. EL84 SE amplifier
  98. Gain Problems
  99. My SE KT-88 Build thread
  100. Rolling da(rling's) 6j4wa
  101. Phono pre amp
  102. Michealson Audio Da Vinci Preamp
  103. Acrosound PP 6550: Any Advice?
  104. PS idea: isolating transformer from load
  105. K-16LS Help Please
  106. 6N6P-I life-time
  107. Filament Xformer woes...
  108. The Use of 1:1 Input Transformers in Linestages
  109. 12hg7 vs 12hn7a
  110. Anyone familiar with VAC PA 90C1?
  111. Help restore an RCP 413 tube tester
  112. voltage reg make heat sink live. Bad idea?
  113. Audio Innovations series 800 reactivation + some mods
  114. Using 2 rectifiers off 1 power supply
  115. Tube power supply
  116. Improving low bass of a Scott 299c
  117. 1939 Radioshack Catalog online...Anyone have a time machine?
  118. VCCS filament supply for 813
  119. digital volume control
  120. Philips AD3800AM and AD9710AM clones
  121. MTP6N60E replacement
  122. Upgrading output transformers
  123. Cascode RIAA
  124. need a manual for selectron model 40 tube tester??
  125. Volume swinging problem
  126. How to use the almost Group buy Diyaudio CCS circuit
  127. Big voltage swing tube recommendation please
  128. Morgan Jones KT88 PP
  129. Mystery Tube Amplifier -- Help?????
  130. tube tester how can i tell if have match pair?
  131. Photo flash caps for the power supply?
  132. Finding bias point in PP fixed bias
  133. 6V6 Push Pull
  134. Transformer Mounting Braces
  135. Rozenblit 6as7 otl questions
  136. Genesis pre-amplifier schematic wanted
  137. 6H30PI/6922 Preamp Circuit
  138. PFB line amp
  139. 2A3C Mono plate: Shuguang Or Sovtek?
  140. Any kit reccomendation would be helpful
  141. Cleaning tubes...
  142. Anyone recognise these tubes...
  143. big ol' 26lb. output transformer...
  144. ECC88 Help
  145. European Triode Festival ETF08: still some places vacant!
  146. Dynaco MK IV Mystery
  147. 6as7/6080 Se Otl
  148. 6GW8 substitute tube 6BM8?
  149. Choke question
  150. Screen driven output stage
  151. Peavey Delta Blues Reverb Frustration
  152. 2a3 parallel driven 6sn7 schem
  153. WMD or Big Freakin Power Supply
  154. DIY My tube tester
  155. Help! May have dropped 12sn7 in place of 6sn7
  156. Got a bucketload of tubes, need identification
  157. Help from Allen Wright SuperReg owner
  158. Moscode 600
  159. Signal caps to keep on hand
  160. pin-compatible EF86 alternative?
  161. Capless Parafeed (with apologies to SY)
  162. T Eaton Viking schematics?
  163. S5 K-16LS mods, tweaks?
  164. 5687 fully balanced line stage
  165. Subminiature sockets
  166. What Do I Have Here?
  167. Bad vacuum?
  168. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  169. Balanced 24V Aikido question
  170. How to wire a 'Buck' transformer
  171. OT question - will it work?
  172. ID Unknown Tube
  173. Time delay start board for tube amps
  174. Hum reduction ideas (again)
  175. Utc Ls-33
  176. K-16ls
  177. Potential valve damping tweak
  178. Conversion Tube PA and Bass Tone
  179. Wanted. Simple EL34 Push Pull Design
  180. PCB advice
  181. Hybrid voltage quadrupler?
  182. my fu80 amp
  183. Pre-amp for BeoMaster
  184. Question re: chokes
  185. Inundated Electrolytics
  186. power transformer recommendation
  187. PS decoupling cap placement
  188. USSR Russian Caps. KBG-MN or K75-24?
  189. #10SE Tested project
  190. schematics help
  191. HF Decoupling Caps questions
  192. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  193. Useful power transformer design thread on Analogue
  194. Understanding Simple SE design choices
  195. Fender Pro Amp
  196. Hewlet Packard transformer
  197. 6BG6 for KT66
  198. new learning
  199. TV-7D/U Tube setting --- 6550
  200. ecc40 LTP
  201. Latest incarnation of music angel kt88
  202. Tubelab SE oscillation?
  203. 6SL7 5E3 - together at last?
  204. AN Shinri schematic wanted
  205. Found a box of old toobs
  206. Choke input filter LF noise
  207. Aikido line stage - plus phono line stage
  208. Hook up wire?
  209. Irritating problem with soft start
  210. OTL with 6AN5
  211. Mono Blocs Completed...
  212. Magic Eye for solid state Tuner?
  213. a question about drive power
  214. converting BAL to UNBAL using tubes and without transformers
  215. Aikiado question
  216. Top cap tubes+ arc welder
  217. Small beginner amplifier and hello :)
  218. Blackburn MicroTech TechTube(TM) Valves update!
  219. Resistor setup for integrated amp & headphones?
  220. Brook 2A3 PP amp ID help
  221. heater voltage
  222. kobayashi 300B push-pull
  223. Triode strapping a tetrode...
  224. Any info on 3572 Half wave Rectier
  225. Question Conrad Johnson reg. psu?
  226. Another 300B SE
  227. 7-pin Low Rp tube
  228. S-5 K-16LS Kit arrived in Germany !!
  229. Transcendar RIP?
  230. 6N6P in an Aikido?
  231. Were can i bay a Telefunken 6ak5 ?
  232. SE 245 driverstage
  233. 12ax7 srpp dac output
  234. How this circuit works (Baby Huey type)
  235. New tubeamp
  236. Snubber caps
  237. Counterpoint sa220
  238. Resistor before tube rectifier
  239. TCJ Push-Pull calculator v2
  240. Heathkit AG-9A audio generator schematic !!!
  241. Sources for James Transformers
  242. High Voltage Soldering (IPC Standards?)
  243. Speakers for Flea Powered Amps <1.5W
  244. Opinions on Allen & Bradley Carbon Composite resistors
  245. wich tube is best for the yaqin cd buffer ?
  246. Mikael Abdellah's SE KT88 bass response + tightness
  247. How best to use the PSU xformer I have
  248. 6L6GC AB2 Amp
  249. Kofi Annan in: "I'd Like Me a Mic Pre!"
  250. Too much gain - help with changing driver tube.

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