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  1. Faulty tube?
  2. Philbrick opamp bases
  3. Hammond Driver transformers
  4. 6n7/2a3
  5. Flea power for cheap OPT's?
  6. 1st Project - Half time report
  7. Claus Byrith 4-30 Questions
  8. quicksilver 8417 biasing
  9. 6sl7
  10. Trying to identify/find documentation on a 50EH5 amp
  11. Basic tests and measurements for OPTs
  12. 6SN7GT SRSE Linestage
  13. Dynaco Mark III
  14. Push Pull 300B preliminary
  15. triode thermodynamic model
  16. My first post!
  17. A Neophyte's 12B4 Build Thread
  18. Webster Hammond Model "G" amplifier
  19. Matching tubes- WE 396a/RFT EL34
  20. What is the most powerful AF tube amp ever built?
  21. SOHA Amp & PSU Layout, need feedback
  22. smoke came from transformer
  23. Startup Cost?
  24. Old or new output transformer?
  25. speaker magnet proximity Question
  26. I made a web page on building triode models /w CurveCaptor
  27. Boosted Triode mode?
  28. Unbalacing a PP output transformer?
  29. Double C Cores
  30. Aikido Power Supply
  31. Output Noise question
  32. Power Supply Ringing
  33. Compare Sowter SA08 with Plitron 3035SE for 300B
  34. My 6C33C SING WITH No SPEAKER !
  35. MOSFET Driver for Power Pentodes
  36. Floating heater supplies
  37. Altec Amplifiers
  38. What causes the overrun bias on V4?
  39. sound comparison of Class A1 vs A2 amps
  40. 12AU7 substituted for a 6922
  41. Whats the worst that could happen?
  42. Ferranti transformers
  43. PC Cooling Fans for Tube Amps
  44. 845 circuit suggestions
  45. transformer hum / buzz getting into B+?
  46. Safe Transformerless Amps Possible?
  47. GM70 Lower Voltage PP Question
  48. phonostage with 150VDC B+
  49. Spuddo more powerfull
  50. Larry Moore 300B/10Y/6SN7GT
  51. Foreplay Preamp volume popping
  52. Altec Tube Amplifiers
  53. Circuit review
  54. 12dw7 to 12ax7 conversion?
  55. 26 preamp
  56. Etf07
  57. 1st Project Heater Wiring
  58. Dropped tube
  59. Great bench supply for tube work.
  60. Mullard px25 - need matched pair
  61. popping noise through 1 channel on Radford STA15
  62. Point to point wiring help
  63. 1st Time Project - Report 2 + advice sought
  64. "Simple" 2A3
  65. vinyl v cd differences - phono pre and cd-player
  66. Shielded input cable
  67. Coupling caps in ST35
  68. Mentmore M100
  69. How to match tubes?
  70. Transcendent OTL T8 Vs. Atma-Sphere M60
  71. New 12AX7A Pspice model
  72. What does R2D2, Mickey Mouse and a...
  73. Why 5V filament
  74. Alloys for filaments
  75. 6360 as Power Tube for SE amp
  76. Bridging Stereo Amps
  77. Problem with 6L6 Monoblock
  78. Gain
  79. Proper grounding method...
  80. Changing a tube amp...
  81. Houston Mini 2004 Pot question
  82. Diode Heatsink
  83. Looking for a PCB / kit for a bipolar tube rectified PSU
  84. compactron output stage and power supply
  85. Better sounding ECL86's
  86. interesting amp & interesting problem
  87. Hybrid Tube / Mosfet Amplifier
  88. Again (sorry) what's the biggest 6V heater double rectifier?
  89. PP EL34 circuit wanted
  90. Need advice for transformer for tube GM 70.
  91. Pentode filter
  92. How to calculate for cathode follower
  93. 6L6WXT in a Dynaco ST-70
  94. tube preamp using submini tube
  95. SE Trafo for PP use
  96. WE91A Pentode Questions?
  97. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  98. looking for schematic; three EL84's in PSE ?
  99. Need work done on a dynaco power amp
  100. quick question on fixed bias
  101. DIY Tube Audio dealers in New Zealand
  102. ornec
  103. Tuner filament supply question
  104. An idea for a partial feedback pentode amp using 6AU6's and 807's
  105. Tube current regulation for series heaters' supply.
  106. Bogen PCA-1 two tube booster amp
  107. First time building a tube preamp
  108. B&K 700 problems?
  109. Voltage Multipliers
  110. Russian 6P14P tubes
  111. Where to get tube spec sheets, pinouts
  112. PCL 82 Hybrid 2SC5200/2SA1943
  113. CCS in Otput Tube Cathode - Does It Make Sense?
  114. My brew of the "Darling"
  115. Series connection of filaments
  116. noisy filament transformer
  117. Circuit diagram for Trilogy VTi.
  118. Got oddball tubes!
  119. A photo for my question
  120. Make a preamp with an already buil amplifier
  121. DN2540
  122. mods for almarro amp
  123. Filament Transformer
  124. Circuit indentification
  125. Simplest Tube Regulated PSU?
  126. High Voltage Insulator for Umbilical
  127. wiring diagram, instruction on the transformer S-265-Q
  128. help me get started
  129. 12AU7 instead of 6C4
  130. Fisher 600 questions
  131. Phase inverter
  132. srpp input stage
  133. Orientation of EL34 Tubes
  134. Load termination ?
  135. Advice on SE DHT for Lowther Fidelio DX2
  136. Biggest dual triode output tube?
  137. OPT impedance question
  138. Partridge SE O/P transformers
  139. SimpleSE and me
  140. SRPP decoupling cap vs. output transformer
  141. Differences between 6SN7GTA and 6SN7GTB?
  142. Radford STA-15 questions
  143. Balanced Input Hookup
  144. Need Tube Testing Settings for 3 tubes
  145. Need helping in Grounded Grid preamp using 6H6P 6H30P
  146. Regulated Lab DC power supply
  147. Fixed Bias 6BQ5?
  148. Heathkit AG7 Audio Geneator
  149. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  150. NEWBIE question SET vs. Solid State
  151. 6N6P cascode + 6AS7 Cathode follower
  152. Help me calculator OPT for 807, 6C4C tubes.
  153. Now I have caught the bug - next project
  154. 20W cathode follower amplifier
  155. Muting line level signals
  156. Anywhere in Hong Kong...
  157. RIAA / Pre mod/upgrade
  158. IT WORKS! Tube Phono Stage
  159. 2033 info sought
  160. Pentode Zeus
  161. 5987 (sc968b)
  162. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  163. JAN Sylvania 7308 vs. JAN Sylvania 6922
  164. recording amp
  165. A Tee-Vee T00b Amp
  166. Locating a bad resistor
  167. MiscEI
  168. ST70 iron recommendations please
  169. need help finding a link . . .
  170. Cathodyne Phase Inverter question
  171. Using a ignition coil for a audio transformer
  172. Multiple primary windings
  173. mcintosh mc3500 clone
  174. B+ Delay
  175. My attempt: 5 element Pentode Spice model
  176. Spelling, capitalization, and grammar.
  177. Power Supply
  178. Output Autotransformers
  179. Multi Section Cap....diy?
  180. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  181. Tube rectifier to Solid state Diodes exchange
  182. Custom Cards For B&K 675 Tester
  183. Bada PH-1 simple box mod
  184. Tubes Rectifier Help?
  185. Cascode with local feedback
  186. amps
  187. how to preserve copper plates?
  188. Stereo EL34 amplifier
  189. tube amp transformer identification
  190. SA 3000 Counterpoint
  191. Beginner needs advices for 807 PP project
  192. Heater Power Supply Pspice model
  193. FWCT Rectification
  194. dc or not dc
  195. OTL for dummies.
  196. TCJ Cathode-Coupled Amplifier
  197. 845 Low voltage SE AMP
  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. Hybrid amplifier A2 class
  223. Diodes on power supply output for voltage drop?
  224. Converting from single ended parafeed to differential
  225. micro-amp SE with 2,5k OPT+
  226. Unknown Tube Amp
  227. Aikido AC Heater Supply
  228. Help me find some odd looking rectifiers!
  229. So, you may have been wondering...(813 Content !)
  230. Just sharing my 26 experience last night...
  231. Simple 5842-45 SET Amp Design Idea
  232. Yamamoto teflon sockets
  233. new thread, 6BM8 PP build begins...
  234. KT88 Heater Current
  235. 150V plate output tubes
  236. Newbie need to help
  237. Help me please
  238. Elekit TU-870 help
  239. Looking for schematic of Audible Illusion Modulus 3A preamp
  240. Junker Box amp
  241. aikido hybrid with 5 A bias
  242. Shall we compile a list?
  243. drift in direct coupled tubes
  244. Hammond 2XX vs 3XX Power Tranny Questions
  245. Help with this transformer please...
  246. Capacitor upgrade in Paragon 12A
  247. Light bulbs as cathode resistors?
  248. Favorite Threads and Posts in "Tubes" Forum
  249. I need 12v DC- whats the best option?
  250. Beard P35 and Tubes Replacement

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