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  1. Looking for a PCB / kit for a bipolar tube rectified PSU
  2. compactron output stage and power supply
  3. Better sounding ECL86's
  4. Heathkit EA-3 conversion to guitar amp
  5. interesting amp & interesting problem
  6. Hybrid Tube / Mosfet Amplifier
  7. Again (sorry) what's the biggest 6V heater double rectifier?
  8. PP EL34 circuit wanted
  9. Need advice for transformer for tube GM 70.
  10. Pentode filter
  11. How to calculate for cathode follower
  12. 6L6WXT in a Dynaco ST-70
  13. tube preamp using submini tube
  14. SE Trafo for PP use
  15. WE91A Pentode Questions?
  16. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  17. looking for schematic; three EL84's in PSE ?
  18. Need work done on a dynaco power amp
  19. quick question on fixed bias
  20. DIY Tube Audio dealers in New Zealand
  21. ornec
  22. Tuner filament supply question
  23. An idea for a partial feedback pentode amp using 6AU6's and 807's
  24. Tube current regulation for series heaters' supply.
  25. Bogen PCA-1 two tube booster amp
  26. First time building a tube preamp
  27. B&K 700 problems?
  28. Silvertone 1482 Blowing Rectifier Tubes
  29. Voltage Multipliers
  30. Russian 6P14P tubes
  31. Where to get tube spec sheets, pinouts
  32. PCL 82 Hybrid 2SC5200/2SA1943
  33. CCS in Otput Tube Cathode - Does It Make Sense?
  34. My Guitar Tube Amp. Help needed with Mesa/Boogie pre
  35. My brew of the "Darling"
  36. Series connection of filaments
  37. noisy filament transformer
  38. Circuit diagram for Trilogy VTi.
  39. Got oddball tubes!
  40. A photo for my question
  41. Make a preamp with an already buil amplifier
  42. DN2540
  43. mods for almarro amp
  44. Filament Transformer
  45. Circuit indentification
  46. Simplest Tube Regulated PSU?
  47. High Voltage Insulator for Umbilical
  48. wiring diagram, instruction on the transformer S-265-Q
  49. help me get started
  50. 12AU7 instead of 6C4
  51. Fisher 600 questions
  52. Phase inverter
  53. srpp input stage
  54. Orientation of EL34 Tubes
  55. Load termination ?
  56. Advice on SE DHT for Lowther Fidelio DX2
  57. Dynacord MV46 as a compressor
  58. Biggest dual triode output tube?
  59. OPT impedance question
  60. Partridge SE O/P transformers
  61. SimpleSE and me
  62. SRPP decoupling cap vs. output transformer
  63. Differences between 6SN7GTA and 6SN7GTB?
  64. Radford STA-15 questions
  65. Balanced Input Hookup
  66. Need Tube Testing Settings for 3 tubes
  67. Need helping in Grounded Grid preamp using 6H6P 6H30P
  68. Regulated Lab DC power supply
  69. Fixed Bias 6BQ5?
  70. Heathkit AG7 Audio Geneator
  71. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  72. NEWBIE question SET vs. Solid State
  73. 6N6P cascode + 6AS7 Cathode follower
  74. Help me calculator OPT for 807, 6C4C tubes.
  75. Now I have caught the bug - next project
  76. 20W cathode follower amplifier
  77. Muting line level signals
  78. Anywhere in Hong Kong...
  79. RIAA / Pre mod/upgrade
  80. IT WORKS! Tube Phono Stage
  81. 2033 info sought
  82. Pentode Zeus
  83. 5987 (sc968b)
  84. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  85. JAN Sylvania 7308 vs. JAN Sylvania 6922
  86. recording amp
  87. A Tee-Vee T00b Amp
  88. metal tube lineup for a guitar amp
  89. Locating a bad resistor
  90. MiscEI
  91. ST70 iron recommendations please
  92. need help finding a link . . .
  93. Cathodyne Phase Inverter question
  94. Using a ignition coil for a audio transformer
  95. Multiple primary windings
  96. mcintosh mc3500 clone
  97. B+ Delay
  98. My attempt: 5 element Pentode Spice model
  99. Spelling, capitalization, and grammar.
  100. Power Supply
  101. Output Autotransformers
  102. Multi Section Cap....diy?
  103. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  104. Tube rectifier to Solid state Diodes exchange
  105. Hickok 533A help
  106. Custom Cards For B&K 675 Tester
  107. Peavey Heritage VTX - Bias Question
  108. EMC Model 200 Tube Tester Any Info Pls
  109. Guitar amp PT design questions
  110. Bada PH-1 simple box mod
  111. Tubes Rectifier Help?
  112. How to make sense of LTSpice FFT analysis?
  113. Cascode with local feedback
  114. amps
  115. how to preserve copper plates?
  116. Stereo EL34 amplifier
  117. SA 3000 Counterpoint
  118. tube amp transformer identification
  119. Beginner needs advices for 807 PP project
  120. Heater Power Supply Pspice model
  121. FWCT Rectification
  122. dc or not dc
  123. OTL for dummies.
  124. TCJ Cathode-Coupled Amplifier
  125. 845 Low voltage SE AMP
  126. Vacuum Tube Computer Simulation Modeling
  127. Getting a vintage amp to work
  128. Switched DC/DCconverter for B+
  129. What can I do with this?
  130. Super Pas Two
  131. pspice model of 811A
  132. Question on what is more important B+ or Plate Voltage
  133. Can I trust SPICE?
  134. Power supply filter mod
  135. Does antone interested xxx PCB groupbuy ?
  136. 1 signal ground or two?
  137. Peavey Heritage VTX - Schematics
  138. #47......
  139. Hammond 1650F
  140. 100 watt KT88/6550 Designs
  141. What glue to use for tube glass bulb + base
  142. Tube filaments (heaters) power supply
  143. Quick Ecl86/6gw8 Amp
  144. Need help on eq. hook up for new tube system
  145. Alternatives to the Dynaco ST-70
  146. I need some eq. hook up expert advice please!
  147. Please help identify which plug I need for this socket
  148. Svetlana KT88 winged C's failings
  149. PP amp using 6p15P
  150. Time for another round of "Criticise my Circuit"... err..I mean
  151. Adding a parallel feed on DRD
  152. How hot can resistor stands?
  153. Hybrid amplifier A2 class
  154. Diodes on power supply output for voltage drop?
  155. Converting from single ended parafeed to differential
  156. micro-amp SE with 2,5k OPT+
  157. Unknown Tube Amp
  158. Aikido AC Heater Supply
  159. Help me find some odd looking rectifiers!
  160. So, you may have been wondering...(813 Content !)
  161. Just sharing my 26 experience last night...
  162. Simple 5842-45 SET Amp Design Idea
  163. Yamamoto teflon sockets
  164. new thread, 6BM8 PP build begins...
  165. KT88 Heater Current
  166. 150V plate output tubes
  167. Newbie need to help
  168. Help me please
  169. Elekit TU-870 help
  170. Looking for schematic of Audible Illusion Modulus 3A preamp
  171. Junker Box amp
  172. aikido hybrid with 5 A bias
  173. Shall we compile a list?
  174. drift in direct coupled tubes
  175. Hammond 2XX vs 3XX Power Tranny Questions
  176. Help with this transformer please...
  177. Capacitor upgrade in Paragon 12A
  178. Light bulbs as cathode resistors?
  179. Favorite Threads and Posts in "Tubes" Forum
  180. I need 12v DC- whats the best option?
  181. Beard P35 and Tubes Replacement
  182. Graphic 1/3 Octave Tube Equaliser
  183. GE "Dual Speaker" radio to Harmony H303 conversion : Help, please?
  184. Power Supply Design
  185. Gomes amp
  186. pignose g40v power transformer
  187. Grid battery biased SE output stages
  188. KT88 amp schematic/parts list
  189. Wire Wrap connections for point to point
  190. Aikido Tubes
  191. Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300
  192. Schematic Question
  193. EL34 as triode?
  194. Linestage Questions
  195. Help! Building Jax's HFTA
  196. Gobs of AC on ISCO 494
  197. Change step up ratio of input transformer?
  198. LCR RIAA rebuild
  199. common mode choke question
  200. Choosing Choke
  201. Input impedance
  202. Hey Tubelab, Transformer Question
  203. Hybrid Rectifier Check Please !
  204. 1st tube project, tubalizer?
  205. 1st Time project - Report 1
  206. ED-8000 set amp
  207. Hitachi v-202 scope
  208. Cheap and nice looking SE OPT
  209. How much difference 0.22 vs 0.33 cap?
  210. Tubelab SimpleSE
  211. 813 final design?
  212. HPHV regulator, designed by Emile Sprenger
  213. Counterpoint tube amps
  214. SS or tube voltage amplifying stages in an amp with tube output?
  215. 24V Aikido --> 6GM8 with Buffer
  216. Motorboating in Dynaco ST-70
  217. Does such a tube exist?
  218. Noisy PSU?
  219. Bell & Howell amp
  220. Valve Amp with soild state front end
  221. Controlling transient response
  222. Transcendar Budget SE Transformers
  223. Opinion on New Sensor 6SN7GTB?
  224. Determining optimal OT turns ratio
  225. Splitting up the Power Amp
  226. Sowter 5113
  227. Cascoded 6N6P
  228. MachMat or Tentlabs Heater Supply for 300B
  229. Common mode filtering for heater supplies.
  230. Distortion.
  231. 83 rectifier peak repetitive current?
  232. 813 Project has begun !
  233. C3G PX25 DRD - Will it work
  234. 6J5 (Metal Tubes) ....something goes around inside
  235. common-mode chokes
  236. EL-34 and 100k pot
  237. Scott 299 (late) OPT's
  238. Tube magazines
  239. PP plate-choke?
  240. More Phase Splitting Questions
  241. Concertina sanity check
  242. Transformer Specs
  243. The Aikido or Moskido??
  244. KT88 PP suggestion
  245. Ultrapath line amp
  246. Gross loudspeaker cone movement when using tube amps.
  247. Pre-amp power iron advice??
  248. Class A 8417 Amp
  249. DHT output tubes and DC heating
  250. rock music and SE?

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