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  1. Trying to identify/find documentation on a 50EH5 amp
  2. Basic tests and measurements for OPTs
  3. 6SN7GT SRSE Linestage
  4. Dynaco Mark III
  5. Push Pull 300B preliminary
  6. triode thermodynamic model
  7. My first post!
  8. A Neophyte's 12B4 Build Thread
  9. Webster Hammond Model "G" amplifier
  10. Matching tubes- WE 396a/RFT EL34
  11. What is the most powerful AF tube amp ever built?
  12. SOHA Amp & PSU Layout, need feedback
  13. smoke came from transformer
  14. Startup Cost?
  15. Old or new output transformer?
  16. speaker magnet proximity Question
  17. Russian L3-3 tube tester
  18. I made a web page on building triode models /w CurveCaptor
  19. Boosted Triode mode?
  20. Unbalacing a PP output transformer?
  21. Double C Cores
  22. Aikido Power Supply
  23. Output Noise question
  24. Power Supply Ringing
  25. Compare Sowter SA08 with Plitron 3035SE for 300B
  26. My 6C33C SING WITH No SPEAKER !
  27. MOSFET Driver for Power Pentodes
  28. Floating heater supplies
  29. Altec Amplifiers
  30. What causes the overrun bias on V4?
  31. sound comparison of Class A1 vs A2 amps
  32. 12AU7 substituted for a 6922
  33. Whats the worst that could happen?
  34. Ferranti transformers
  35. PC Cooling Fans for Tube Amps
  36. 845 circuit suggestions
  37. DIY Sofia tube tester?
  38. transformer hum / buzz getting into B+?
  39. Safe Transformerless Amps Possible?
  40. GM70 Lower Voltage PP Question
  41. phonostage with 150VDC B+
  42. Spuddo more powerfull
  43. Larry Moore 300B/10Y/6SN7GT
  44. Foreplay Preamp volume popping
  45. Altec Tube Amplifiers
  46. Circuit review
  47. DIY Tube Tester for 6336s
  48. 12dw7 to 12ax7 conversion?
  49. 26 preamp
  50. Etf07
  51. 1st Project Heater Wiring
  52. Dropped tube
  53. Great bench supply for tube work.
  54. Mullard px25 - need matched pair
  55. 2W carbon composit ressy
  56. popping noise through 1 channel on Radford STA15
  57. Point to point wiring help
  58. 1st Time Project - Report 2 + advice sought
  59. "Simple" 2A3
  60. vinyl v cd differences - phono pre and cd-player
  61. Shielded input cable
  62. Coupling caps in ST35
  63. Mentmore M100
  64. How to match tubes?
  65. Transcendent OTL T8 Vs. Atma-Sphere M60
  66. New 12AX7A Pspice model
  67. What does R2D2, Mickey Mouse and a...
  68. Why 5V filament
  69. Alloys for filaments
  70. 6360 as Power Tube for SE amp
  71. Bridging Stereo Amps
  72. Problem with 6L6 Monoblock
  73. Gain
  74. Proper grounding method...
  75. Changing a tube amp...
  76. Houston Mini 2004 Pot question
  77. Diode Heatsink
  78. Looking for a PCB / kit for a bipolar tube rectified PSU
  79. compactron output stage and power supply
  80. Better sounding ECL86's
  81. interesting amp & interesting problem
  82. Hybrid Tube / Mosfet Amplifier
  83. Again (sorry) what's the biggest 6V heater double rectifier?
  84. PP EL34 circuit wanted
  85. Need advice for transformer for tube GM 70.
  86. Pentode filter
  87. How to calculate for cathode follower
  88. 6L6WXT in a Dynaco ST-70
  89. tube preamp using submini tube
  90. SE Trafo for PP use
  91. WE91A Pentode Questions?
  92. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  93. looking for schematic; three EL84's in PSE ?
  94. Need work done on a dynaco power amp
  95. quick question on fixed bias
  96. DIY Tube Audio dealers in New Zealand
  97. ornec
  98. Tuner filament supply question
  99. An idea for a partial feedback pentode amp using 6AU6's and 807's
  100. Tube current regulation for series heaters' supply.
  101. Bogen PCA-1 two tube booster amp
  102. First time building a tube preamp
  103. B&K 700 problems?
  104. Voltage Multipliers
  105. Russian 6P14P tubes
  106. Where to get tube spec sheets, pinouts
  107. PCL 82 Hybrid 2SC5200/2SA1943
  108. CCS in Otput Tube Cathode - Does It Make Sense?
  109. My brew of the "Darling"
  110. Series connection of filaments
  111. noisy filament transformer
  112. Circuit diagram for Trilogy VTi.
  113. Got oddball tubes!
  114. A photo for my question
  115. Make a preamp with an already buil amplifier
  116. DN2540
  117. mods for almarro amp
  118. Filament Transformer
  119. Circuit indentification
  120. Simplest Tube Regulated PSU?
  121. High Voltage Insulator for Umbilical
  122. wiring diagram, instruction on the transformer S-265-Q
  123. help me get started
  124. 12AU7 instead of 6C4
  125. Fisher 600 questions
  126. Phase inverter
  127. srpp input stage
  128. Orientation of EL34 Tubes
  129. Load termination ?
  130. Advice on SE DHT for Lowther Fidelio DX2
  131. Dynacord MV46 as a compressor
  132. Biggest dual triode output tube?
  133. OPT impedance question
  134. Partridge SE O/P transformers
  135. SimpleSE and me
  136. SRPP decoupling cap vs. output transformer
  137. Differences between 6SN7GTA and 6SN7GTB?
  138. Radford STA-15 questions
  139. Balanced Input Hookup
  140. Need Tube Testing Settings for 3 tubes
  141. Need helping in Grounded Grid preamp using 6H6P 6H30P
  142. Regulated Lab DC power supply
  143. Fixed Bias 6BQ5?
  144. Heathkit AG7 Audio Geneator
  145. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  146. NEWBIE question SET vs. Solid State
  147. 6N6P cascode + 6AS7 Cathode follower
  148. Help me calculator OPT for 807, 6C4C tubes.
  149. Now I have caught the bug - next project
  150. 20W cathode follower amplifier
  151. Muting line level signals
  152. Anywhere in Hong Kong...
  153. RIAA / Pre mod/upgrade
  154. IT WORKS! Tube Phono Stage
  155. 2033 info sought
  156. Pentode Zeus
  157. 5987 (sc968b)
  158. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  159. JAN Sylvania 7308 vs. JAN Sylvania 6922
  160. recording amp
  161. A Tee-Vee T00b Amp
  162. Locating a bad resistor
  163. MiscEI
  164. ST70 iron recommendations please
  165. need help finding a link . . .
  166. Cathodyne Phase Inverter question
  167. Using a ignition coil for a audio transformer
  168. Multiple primary windings
  169. mcintosh mc3500 clone
  170. B+ Delay
  171. My attempt: 5 element Pentode Spice model
  172. Spelling, capitalization, and grammar.
  173. Power Supply
  174. Output Autotransformers
  175. Multi Section Cap....diy?
  176. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  177. Tube rectifier to Solid state Diodes exchange
  178. Hickok 533A help
  179. Custom Cards For B&K 675 Tester
  180. EMC Model 200 Tube Tester Any Info Pls
  181. Bada PH-1 simple box mod
  182. Tubes Rectifier Help?
  183. How to make sense of LTSpice FFT analysis?
  184. Cascode with local feedback
  185. amps
  186. how to preserve copper plates?
  187. Stereo EL34 amplifier
  188. tube amp transformer identification
  189. SA 3000 Counterpoint
  190. Beginner needs advices for 807 PP project
  191. Heater Power Supply Pspice model
  192. FWCT Rectification
  193. dc or not dc
  194. OTL for dummies.
  195. TCJ Cathode-Coupled Amplifier
  196. 845 Low voltage SE AMP
  197. Vacuum Tube Computer Simulation Modeling
  198. Getting a vintage amp to work
  199. Switched DC/DCconverter for B+
  200. What can I do with this?
  201. Super Pas Two
  202. pspice model of 811A
  203. Question on what is more important B+ or Plate Voltage
  204. Can I trust SPICE?
  205. Power supply filter mod
  206. Does antone interested xxx PCB groupbuy ?
  207. 1 signal ground or two?
  208. #47......
  209. Hammond 1650F
  210. 100 watt KT88/6550 Designs
  211. What glue to use for tube glass bulb + base
  212. Tube filaments (heaters) power supply
  213. Quick Ecl86/6gw8 Amp
  214. Need help on eq. hook up for new tube system
  215. Alternatives to the Dynaco ST-70
  216. I need some eq. hook up expert advice please!
  217. Please help identify which plug I need for this socket
  218. Svetlana KT88 winged C's failings
  219. PP amp using 6p15P
  220. Time for another round of "Criticise my Circuit"... err..I mean
  221. Adding a parallel feed on DRD
  222. How hot can resistor stands?
  223. Hybrid amplifier A2 class
  224. Diodes on power supply output for voltage drop?
  225. Converting from single ended parafeed to differential
  226. micro-amp SE with 2,5k OPT+
  227. Unknown Tube Amp
  228. Aikido AC Heater Supply
  229. Help me find some odd looking rectifiers!
  230. So, you may have been wondering...(813 Content !)
  231. Just sharing my 26 experience last night...
  232. Simple 5842-45 SET Amp Design Idea
  233. Yamamoto teflon sockets
  234. new thread, 6BM8 PP build begins...
  235. KT88 Heater Current
  236. 150V plate output tubes
  237. Newbie need to help
  238. Help me please
  239. Elekit TU-870 help
  240. Looking for schematic of Audible Illusion Modulus 3A preamp
  241. Junker Box amp
  242. aikido hybrid with 5 A bias
  243. Shall we compile a list?
  244. drift in direct coupled tubes
  245. Hammond 2XX vs 3XX Power Tranny Questions
  246. Help with this transformer please...
  247. Capacitor upgrade in Paragon 12A
  248. Light bulbs as cathode resistors?
  249. Favorite Threads and Posts in "Tubes" Forum
  250. I need 12v DC- whats the best option?

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