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  1. Floating heater supplies
  2. Altec Amplifiers
  3. What causes the overrun bias on V4?
  4. sound comparison of Class A1 vs A2 amps
  5. 12AU7 substituted for a 6922
  6. Whats the worst that could happen?
  7. Ferranti transformers
  8. PC Cooling Fans for Tube Amps
  9. 845 circuit suggestions
  10. DIY Sofia tube tester?
  11. transformer hum / buzz getting into B+?
  12. Safe Transformerless Amps Possible?
  13. GM70 Lower Voltage PP Question
  14. phonostage with 150VDC B+
  15. Spuddo more powerfull
  16. Larry Moore 300B/10Y/6SN7GT
  17. Foreplay Preamp volume popping
  18. Altec Tube Amplifiers
  19. Circuit review
  20. DIY Tube Tester for 6336s
  21. 12dw7 to 12ax7 conversion?
  22. 26 preamp
  23. Etf07
  24. 1st Project Heater Wiring
  25. Dropped tube
  26. Great bench supply for tube work.
  27. Mullard px25 - need matched pair
  28. 2W carbon composit ressy
  29. popping noise through 1 channel on Radford STA15
  30. Point to point wiring help
  31. 1st Time Project - Report 2 + advice sought
  32. "Simple" 2A3
  33. vinyl v cd differences - phono pre and cd-player
  34. Shielded input cable
  35. knight guitar amp conversion
  36. Dumb motor run capacitor question
  37. Coupling caps in ST35
  38. Mentmore M100
  39. How to match tubes?
  40. Transcendent OTL T8 Vs. Atma-Sphere M60
  41. New 12AX7A Pspice model
  42. What does R2D2, Mickey Mouse and a...
  43. Why 5V filament
  44. Alloys for filaments
  45. 6360 as Power Tube for SE amp
  46. Bridging Stereo Amps
  47. Problem with 6L6 Monoblock
  48. Gain
  49. Proper grounding method...
  50. Changing a tube amp...
  51. Houston Mini 2004 Pot question
  52. Diode Heatsink
  53. Looking for a PCB / kit for a bipolar tube rectified PSU
  54. compactron output stage and power supply
  55. Better sounding ECL86's
  56. Heathkit EA-3 conversion to guitar amp
  57. interesting amp & interesting problem
  58. Hybrid Tube / Mosfet Amplifier
  59. Again (sorry) what's the biggest 6V heater double rectifier?
  60. PP EL34 circuit wanted
  61. Need advice for transformer for tube GM 70.
  62. Pentode filter
  63. How to calculate for cathode follower
  64. 6L6WXT in a Dynaco ST-70
  65. tube preamp using submini tube
  66. SE Trafo for PP use
  67. WE91A Pentode Questions?
  68. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  69. looking for schematic; three EL84's in PSE ?
  70. Need work done on a dynaco power amp
  71. quick question on fixed bias
  72. DIY Tube Audio dealers in New Zealand
  73. ornec
  74. Tuner filament supply question
  75. An idea for a partial feedback pentode amp using 6AU6's and 807's
  76. Tube current regulation for series heaters' supply.
  77. Bogen PCA-1 two tube booster amp
  78. First time building a tube preamp
  79. B&K 700 problems?
  80. Silvertone 1482 Blowing Rectifier Tubes
  81. Voltage Multipliers
  82. Russian 6P14P tubes
  83. Where to get tube spec sheets, pinouts
  84. PCL 82 Hybrid 2SC5200/2SA1943
  85. CCS in Otput Tube Cathode - Does It Make Sense?
  86. My Guitar Tube Amp. Help needed with Mesa/Boogie pre
  87. My brew of the "Darling"
  88. Series connection of filaments
  89. noisy filament transformer
  90. Circuit diagram for Trilogy VTi.
  91. Got oddball tubes!
  92. A photo for my question
  93. Make a preamp with an already buil amplifier
  94. DN2540
  95. mods for almarro amp
  96. Filament Transformer
  97. Circuit indentification
  98. Simplest Tube Regulated PSU?
  99. High Voltage Insulator for Umbilical
  100. wiring diagram, instruction on the transformer S-265-Q
  101. help me get started
  102. 12AU7 instead of 6C4
  103. Fisher 600 questions
  104. Phase inverter
  105. srpp input stage
  106. Orientation of EL34 Tubes
  107. Load termination ?
  108. Advice on SE DHT for Lowther Fidelio DX2
  109. Dynacord MV46 as a compressor
  110. Biggest dual triode output tube?
  111. OPT impedance question
  112. Partridge SE O/P transformers
  113. SimpleSE and me
  114. SRPP decoupling cap vs. output transformer
  115. Differences between 6SN7GTA and 6SN7GTB?
  116. Radford STA-15 questions
  117. Balanced Input Hookup
  118. Need Tube Testing Settings for 3 tubes
  119. Need helping in Grounded Grid preamp using 6H6P 6H30P
  120. Regulated Lab DC power supply
  121. Fixed Bias 6BQ5?
  122. Heathkit AG7 Audio Geneator
  123. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  124. NEWBIE question SET vs. Solid State
  125. 6N6P cascode + 6AS7 Cathode follower
  126. Help me calculator OPT for 807, 6C4C tubes.
  127. Now I have caught the bug - next project
  128. 20W cathode follower amplifier
  129. Muting line level signals
  130. Anywhere in Hong Kong...
  131. RIAA / Pre mod/upgrade
  132. IT WORKS! Tube Phono Stage
  133. 2033 info sought
  134. Pentode Zeus
  135. 5987 (sc968b)
  136. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  137. JAN Sylvania 7308 vs. JAN Sylvania 6922
  138. recording amp
  139. A Tee-Vee T00b Amp
  140. metal tube lineup for a guitar amp
  141. Locating a bad resistor
  142. MiscEI
  143. ST70 iron recommendations please
  144. need help finding a link . . .
  145. Cathodyne Phase Inverter question
  146. Using a ignition coil for a audio transformer
  147. Multiple primary windings
  148. mcintosh mc3500 clone
  149. B+ Delay
  150. My attempt: 5 element Pentode Spice model
  151. Spelling, capitalization, and grammar.
  152. Power Supply
  153. Output Autotransformers
  154. Multi Section Cap....diy?
  155. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  156. Tube rectifier to Solid state Diodes exchange
  157. Hickok 533A help
  158. Custom Cards For B&K 675 Tester
  159. Peavey Heritage VTX - Bias Question
  160. EMC Model 200 Tube Tester Any Info Pls
  161. Guitar amp PT design questions
  162. Bada PH-1 simple box mod
  163. Tubes Rectifier Help?
  164. How to make sense of LTSpice FFT analysis?
  165. Cascode with local feedback
  166. amps
  167. how to preserve copper plates?
  168. Stereo EL34 amplifier
  169. SA 3000 Counterpoint
  170. tube amp transformer identification
  171. Beginner needs advices for 807 PP project
  172. Heater Power Supply Pspice model
  173. FWCT Rectification
  174. dc or not dc
  175. OTL for dummies.
  176. TCJ Cathode-Coupled Amplifier
  177. 845 Low voltage SE AMP
  178. Vacuum Tube Computer Simulation Modeling
  179. Getting a vintage amp to work
  180. Switched DC/DCconverter for B+
  181. What can I do with this?
  182. Super Pas Two
  183. pspice model of 811A
  184. Question on what is more important B+ or Plate Voltage
  185. Can I trust SPICE?
  186. Power supply filter mod
  187. Does antone interested xxx PCB groupbuy ?
  188. 1 signal ground or two?
  189. Peavey Heritage VTX - Schematics
  190. #47......
  191. Hammond 1650F
  192. 100 watt KT88/6550 Designs
  193. What glue to use for tube glass bulb + base
  194. Tube filaments (heaters) power supply
  195. Quick Ecl86/6gw8 Amp
  196. Need help on eq. hook up for new tube system
  197. Alternatives to the Dynaco ST-70
  198. I need some eq. hook up expert advice please!
  199. Please help identify which plug I need for this socket
  200. Svetlana KT88 winged C's failings
  201. PP amp using 6p15P
  202. Time for another round of "Criticise my Circuit"... err..I mean
  203. Adding a parallel feed on DRD
  204. How hot can resistor stands?
  205. Hybrid amplifier A2 class
  206. Diodes on power supply output for voltage drop?
  207. Converting from single ended parafeed to differential
  208. micro-amp SE with 2,5k OPT+
  209. Unknown Tube Amp
  210. Aikido AC Heater Supply
  211. Help me find some odd looking rectifiers!
  212. So, you may have been wondering...(813 Content !)
  213. Just sharing my 26 experience last night...
  214. Simple 5842-45 SET Amp Design Idea
  215. Yamamoto teflon sockets
  216. new thread, 6BM8 PP build begins...
  217. KT88 Heater Current
  218. 150V plate output tubes
  219. Newbie need to help
  220. Help me please
  221. Elekit TU-870 help
  222. Looking for schematic of Audible Illusion Modulus 3A preamp
  223. Junker Box amp
  224. aikido hybrid with 5 A bias
  225. Shall we compile a list?
  226. drift in direct coupled tubes
  227. Hammond 2XX vs 3XX Power Tranny Questions
  228. Help with this transformer please...
  229. Capacitor upgrade in Paragon 12A
  230. Light bulbs as cathode resistors?
  231. Favorite Threads and Posts in "Tubes" Forum
  232. I need 12v DC- whats the best option?
  233. Beard P35 and Tubes Replacement
  234. Graphic 1/3 Octave Tube Equaliser
  235. GE "Dual Speaker" radio to Harmony H303 conversion : Help, please?
  236. Power Supply Design
  237. Gomes amp
  238. pignose g40v power transformer
  239. Grid battery biased SE output stages
  240. KT88 amp schematic/parts list
  241. Wire Wrap connections for point to point
  242. Aikido Tubes
  243. Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300
  244. Schematic Question
  245. EL34 as triode?
  246. Linestage Questions
  247. Help! Building Jax's HFTA
  248. Gobs of AC on ISCO 494
  249. Change step up ratio of input transformer?
  250. LCR RIAA rebuild

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