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  1. New 12AX7A Pspice model
  2. What does R2D2, Mickey Mouse and a...
  3. Why 5V filament
  4. Alloys for filaments
  5. 6360 as Power Tube for SE amp
  6. Bridging Stereo Amps
  7. Problem with 6L6 Monoblock
  8. Gain
  9. Proper grounding method...
  10. Changing a tube amp...
  11. Houston Mini 2004 Pot question
  12. Diode Heatsink
  13. Looking for a PCB / kit for a bipolar tube rectified PSU
  14. compactron output stage and power supply
  15. Better sounding ECL86's
  16. Heathkit EA-3 conversion to guitar amp
  17. interesting amp & interesting problem
  18. Hybrid Tube / Mosfet Amplifier
  19. Again (sorry) what's the biggest 6V heater double rectifier?
  20. PP EL34 circuit wanted
  21. Need advice for transformer for tube GM 70.
  22. Pentode filter
  23. How to calculate for cathode follower
  24. 6L6WXT in a Dynaco ST-70
  25. tube preamp using submini tube
  26. SE Trafo for PP use
  27. WE91A Pentode Questions?
  28. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  29. looking for schematic; three EL84's in PSE ?
  30. Need work done on a dynaco power amp
  31. quick question on fixed bias
  32. DIY Tube Audio dealers in New Zealand
  33. ornec
  34. Tuner filament supply question
  35. An idea for a partial feedback pentode amp using 6AU6's and 807's
  36. Tube current regulation for series heaters' supply.
  37. Bogen PCA-1 two tube booster amp
  38. First time building a tube preamp
  39. B&K 700 problems?
  40. Silvertone 1482 Blowing Rectifier Tubes
  41. Voltage Multipliers
  42. Russian 6P14P tubes
  43. Where to get tube spec sheets, pinouts
  44. PCL 82 Hybrid 2SC5200/2SA1943
  45. CCS in Otput Tube Cathode - Does It Make Sense?
  46. My Guitar Tube Amp. Help needed with Mesa/Boogie pre
  47. My brew of the "Darling"
  48. Series connection of filaments
  49. noisy filament transformer
  50. Circuit diagram for Trilogy VTi.
  51. Got oddball tubes!
  52. A photo for my question
  53. Make a preamp with an already buil amplifier
  54. DN2540
  55. mods for almarro amp
  56. Filament Transformer
  57. Circuit indentification
  58. Simplest Tube Regulated PSU?
  59. High Voltage Insulator for Umbilical
  60. wiring diagram, instruction on the transformer S-265-Q
  61. help me get started
  62. 12AU7 instead of 6C4
  63. Fisher 600 questions
  64. Phase inverter
  65. srpp input stage
  66. Orientation of EL34 Tubes
  67. Load termination ?
  68. Advice on SE DHT for Lowther Fidelio DX2
  69. Dynacord MV46 as a compressor
  70. Biggest dual triode output tube?
  71. OPT impedance question
  72. Partridge SE O/P transformers
  73. SimpleSE and me
  74. SRPP decoupling cap vs. output transformer
  75. Differences between 6SN7GTA and 6SN7GTB?
  76. Radford STA-15 questions
  77. Balanced Input Hookup
  78. Need Tube Testing Settings for 3 tubes
  79. Need helping in Grounded Grid preamp using 6H6P 6H30P
  80. Regulated Lab DC power supply
  81. Fixed Bias 6BQ5?
  82. Heathkit AG7 Audio Geneator
  83. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  84. NEWBIE question SET vs. Solid State
  85. 6N6P cascode + 6AS7 Cathode follower
  86. Help me calculator OPT for 807, 6C4C tubes.
  87. Now I have caught the bug - next project
  88. 20W cathode follower amplifier
  89. Muting line level signals
  90. Anywhere in Hong Kong...
  91. RIAA / Pre mod/upgrade
  92. IT WORKS! Tube Phono Stage
  93. 2033 info sought
  94. Pentode Zeus
  95. 5987 (sc968b)
  96. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  97. JAN Sylvania 7308 vs. JAN Sylvania 6922
  98. recording amp
  99. A Tee-Vee T00b Amp
  100. metal tube lineup for a guitar amp
  101. Locating a bad resistor
  102. MiscEI
  103. ST70 iron recommendations please
  104. need help finding a link . . .
  105. Cathodyne Phase Inverter question
  106. Using a ignition coil for a audio transformer
  107. Multiple primary windings
  108. mcintosh mc3500 clone
  109. B+ Delay
  110. My attempt: 5 element Pentode Spice model
  111. Spelling, capitalization, and grammar.
  112. Power Supply
  113. Output Autotransformers
  114. Multi Section Cap....diy?
  115. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  116. Tube rectifier to Solid state Diodes exchange
  117. Hickok 533A help
  118. Custom Cards For B&K 675 Tester
  119. Peavey Heritage VTX - Bias Question
  120. EMC Model 200 Tube Tester Any Info Pls
  121. Guitar amp PT design questions
  122. Bada PH-1 simple box mod
  123. Tubes Rectifier Help?
  124. How to make sense of LTSpice FFT analysis?
  125. Cascode with local feedback
  126. amps
  127. how to preserve copper plates?
  128. Stereo EL34 amplifier
  129. SA 3000 Counterpoint
  130. tube amp transformer identification
  131. Beginner needs advices for 807 PP project
  132. Heater Power Supply Pspice model
  133. FWCT Rectification
  134. dc or not dc
  135. OTL for dummies.
  136. TCJ Cathode-Coupled Amplifier
  137. 845 Low voltage SE AMP
  138. Vacuum Tube Computer Simulation Modeling
  139. Getting a vintage amp to work
  140. Switched DC/DCconverter for B+
  141. What can I do with this?
  142. Super Pas Two
  143. pspice model of 811A
  144. Question on what is more important B+ or Plate Voltage
  145. Can I trust SPICE?
  146. Power supply filter mod
  147. Does antone interested xxx PCB groupbuy ?
  148. 1 signal ground or two?
  149. Peavey Heritage VTX - Schematics
  150. #47......
  151. Hammond 1650F
  152. 100 watt KT88/6550 Designs
  153. What glue to use for tube glass bulb + base
  154. Tube filaments (heaters) power supply
  155. Quick Ecl86/6gw8 Amp
  156. Need help on eq. hook up for new tube system
  157. Alternatives to the Dynaco ST-70
  158. I need some eq. hook up expert advice please!
  159. Please help identify which plug I need for this socket
  160. Svetlana KT88 winged C's failings
  161. PP amp using 6p15P
  162. Time for another round of "Criticise my Circuit"... err..I mean
  163. Adding a parallel feed on DRD
  164. How hot can resistor stands?
  165. Hybrid amplifier A2 class
  166. Diodes on power supply output for voltage drop?
  167. Converting from single ended parafeed to differential
  168. micro-amp SE with 2,5k OPT+
  169. Unknown Tube Amp
  170. Aikido AC Heater Supply
  171. Help me find some odd looking rectifiers!
  172. So, you may have been wondering...(813 Content !)
  173. Just sharing my 26 experience last night...
  174. Simple 5842-45 SET Amp Design Idea
  175. Yamamoto teflon sockets
  176. new thread, 6BM8 PP build begins...
  177. KT88 Heater Current
  178. 150V plate output tubes
  179. Newbie need to help
  180. Help me please
  181. Elekit TU-870 help
  182. Looking for schematic of Audible Illusion Modulus 3A preamp
  183. Junker Box amp
  184. aikido hybrid with 5 A bias
  185. Shall we compile a list?
  186. drift in direct coupled tubes
  187. Hammond 2XX vs 3XX Power Tranny Questions
  188. Help with this transformer please...
  189. Capacitor upgrade in Paragon 12A
  190. Light bulbs as cathode resistors?
  191. Favorite Threads and Posts in "Tubes" Forum
  192. I need 12v DC- whats the best option?
  193. Beard P35 and Tubes Replacement
  194. Graphic 1/3 Octave Tube Equaliser
  195. GE "Dual Speaker" radio to Harmony H303 conversion : Help, please?
  196. Power Supply Design
  197. Gomes amp
  198. pignose g40v power transformer
  199. Grid battery biased SE output stages
  200. KT88 amp schematic/parts list
  201. Wire Wrap connections for point to point
  202. Aikido Tubes
  203. Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300
  204. Schematic Question
  205. EL34 as triode?
  206. Linestage Questions
  207. Help! Building Jax's HFTA
  208. Gobs of AC on ISCO 494
  209. Change step up ratio of input transformer?
  210. LCR RIAA rebuild
  211. common mode choke question
  212. Choosing Choke
  213. Input impedance
  214. Hey Tubelab, Transformer Question
  215. Hybrid Rectifier Check Please !
  216. 1st tube project, tubalizer?
  217. 1st Time project - Report 1
  218. ED-8000 set amp
  219. Hitachi v-202 scope
  220. Cheap and nice looking SE OPT
  221. How much difference 0.22 vs 0.33 cap?
  222. Tubelab SimpleSE
  223. 813 final design?
  224. HPHV regulator, designed by Emile Sprenger
  225. Counterpoint tube amps
  226. SS or tube voltage amplifying stages in an amp with tube output?
  227. 24V Aikido --> 6GM8 with Buffer
  228. Motorboating in Dynaco ST-70
  229. Does such a tube exist?
  230. Noisy PSU?
  231. Bell & Howell amp
  232. Valve Amp with soild state front end
  233. Controlling transient response
  234. Transcendar Budget SE Transformers
  235. Opinion on New Sensor 6SN7GTB?
  236. Determining optimal OT turns ratio
  237. Splitting up the Power Amp
  238. Sowter 5113
  239. Cascoded 6N6P
  240. MachMat or Tentlabs Heater Supply for 300B
  241. Common mode filtering for heater supplies.
  242. Distortion.
  243. 83 rectifier peak repetitive current?
  244. 813 Project has begun !
  245. C3G PX25 DRD - Will it work
  246. 6J5 (Metal Tubes) ....something goes around inside
  247. common-mode chokes
  248. EL-34 and 100k pot
  249. Scott 299 (late) OPT's
  250. Tube magazines

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