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  1. Need advice for transformer for tube GM 70.
  2. Pentode filter
  3. How to calculate for cathode follower
  4. 6L6WXT in a Dynaco ST-70
  5. tube preamp using submini tube
  6. SE Trafo for PP use
  7. WE91A Pentode Questions?
  8. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  9. looking for schematic; three EL84's in PSE ?
  10. Need work done on a dynaco power amp
  11. quick question on fixed bias
  12. DIY Tube Audio dealers in New Zealand
  13. ornec
  14. Tuner filament supply question
  15. An idea for a partial feedback pentode amp using 6AU6's and 807's
  16. Tube current regulation for series heaters' supply.
  17. Bogen PCA-1 two tube booster amp
  18. First time building a tube preamp
  19. B&K 700 problems?
  20. Silvertone 1482 Blowing Rectifier Tubes
  21. Voltage Multipliers
  22. Russian 6P14P tubes
  23. Where to get tube spec sheets, pinouts
  24. PCL 82 Hybrid 2SC5200/2SA1943
  25. CCS in Otput Tube Cathode - Does It Make Sense?
  26. My Guitar Tube Amp. Help needed with Mesa/Boogie pre
  27. My brew of the "Darling"
  28. Series connection of filaments
  29. noisy filament transformer
  30. Circuit diagram for Trilogy VTi.
  31. Got oddball tubes!
  32. A photo for my question
  33. Make a preamp with an already buil amplifier
  34. DN2540
  35. mods for almarro amp
  36. Filament Transformer
  37. Circuit indentification
  38. Simplest Tube Regulated PSU?
  39. High Voltage Insulator for Umbilical
  40. wiring diagram, instruction on the transformer S-265-Q
  41. help me get started
  42. 12AU7 instead of 6C4
  43. Fisher 600 questions
  44. Phase inverter
  45. srpp input stage
  46. Orientation of EL34 Tubes
  47. Load termination ?
  48. Advice on SE DHT for Lowther Fidelio DX2
  49. Dynacord MV46 as a compressor
  50. Biggest dual triode output tube?
  51. OPT impedance question
  52. Partridge SE O/P transformers
  53. SimpleSE and me
  54. SRPP decoupling cap vs. output transformer
  55. Differences between 6SN7GTA and 6SN7GTB?
  56. Radford STA-15 questions
  57. Balanced Input Hookup
  58. Need Tube Testing Settings for 3 tubes
  59. Need helping in Grounded Grid preamp using 6H6P 6H30P
  60. Regulated Lab DC power supply
  61. Fixed Bias 6BQ5?
  62. Heathkit AG7 Audio Geneator
  63. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  64. NEWBIE question SET vs. Solid State
  65. 6N6P cascode + 6AS7 Cathode follower
  66. Help me calculator OPT for 807, 6C4C tubes.
  67. Now I have caught the bug - next project
  68. 20W cathode follower amplifier
  69. Muting line level signals
  70. Anywhere in Hong Kong...
  71. RIAA / Pre mod/upgrade
  72. IT WORKS! Tube Phono Stage
  73. 2033 info sought
  74. Pentode Zeus
  75. 5987 (sc968b)
  76. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  77. JAN Sylvania 7308 vs. JAN Sylvania 6922
  78. recording amp
  79. A Tee-Vee T00b Amp
  80. metal tube lineup for a guitar amp
  81. Locating a bad resistor
  82. MiscEI
  83. ST70 iron recommendations please
  84. need help finding a link . . .
  85. Cathodyne Phase Inverter question
  86. Using a ignition coil for a audio transformer
  87. Multiple primary windings
  88. mcintosh mc3500 clone
  89. B+ Delay
  90. My attempt: 5 element Pentode Spice model
  91. Spelling, capitalization, and grammar.
  92. Power Supply
  93. Output Autotransformers
  94. Multi Section Cap....diy?
  95. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  96. Tube rectifier to Solid state Diodes exchange
  97. Hickok 533A help
  98. Custom Cards For B&K 675 Tester
  99. Peavey Heritage VTX - Bias Question
  100. EMC Model 200 Tube Tester Any Info Pls
  101. Guitar amp PT design questions
  102. Bada PH-1 simple box mod
  103. Tubes Rectifier Help?
  104. How to make sense of LTSpice FFT analysis?
  105. Cascode with local feedback
  106. amps
  107. how to preserve copper plates?
  108. Stereo EL34 amplifier
  109. SA 3000 Counterpoint
  110. tube amp transformer identification
  111. Beginner needs advices for 807 PP project
  112. Heater Power Supply Pspice model
  113. FWCT Rectification
  114. dc or not dc
  115. OTL for dummies.
  116. TCJ Cathode-Coupled Amplifier
  117. 845 Low voltage SE AMP
  118. Vacuum Tube Computer Simulation Modeling
  119. Getting a vintage amp to work
  120. Switched DC/DCconverter for B+
  121. What can I do with this?
  122. Super Pas Two
  123. pspice model of 811A
  124. Question on what is more important B+ or Plate Voltage
  125. Can I trust SPICE?
  126. Power supply filter mod
  127. Does antone interested xxx PCB groupbuy ?
  128. 1 signal ground or two?
  129. Peavey Heritage VTX - Schematics
  130. #47......
  131. Hammond 1650F
  132. 100 watt KT88/6550 Designs
  133. What glue to use for tube glass bulb + base
  134. Tube filaments (heaters) power supply
  135. Quick Ecl86/6gw8 Amp
  136. Need help on eq. hook up for new tube system
  137. Alternatives to the Dynaco ST-70
  138. I need some eq. hook up expert advice please!
  139. Please help identify which plug I need for this socket
  140. Svetlana KT88 winged C's failings
  141. PP amp using 6p15P
  142. Time for another round of "Criticise my Circuit"... err..I mean
  143. Adding a parallel feed on DRD
  144. How hot can resistor stands?
  145. Hybrid amplifier A2 class
  146. Diodes on power supply output for voltage drop?
  147. Converting from single ended parafeed to differential
  148. micro-amp SE with 2,5k OPT+
  149. Unknown Tube Amp
  150. Aikido AC Heater Supply
  151. Help me find some odd looking rectifiers!
  152. So, you may have been wondering...(813 Content !)
  153. Just sharing my 26 experience last night...
  154. Simple 5842-45 SET Amp Design Idea
  155. Yamamoto teflon sockets
  156. new thread, 6BM8 PP build begins...
  157. KT88 Heater Current
  158. 150V plate output tubes
  159. Newbie need to help
  160. Help me please
  161. Elekit TU-870 help
  162. Looking for schematic of Audible Illusion Modulus 3A preamp
  163. Junker Box amp
  164. aikido hybrid with 5 A bias
  165. Shall we compile a list?
  166. drift in direct coupled tubes
  167. Hammond 2XX vs 3XX Power Tranny Questions
  168. Help with this transformer please...
  169. Capacitor upgrade in Paragon 12A
  170. Light bulbs as cathode resistors?
  171. Favorite Threads and Posts in "Tubes" Forum
  172. I need 12v DC- whats the best option?
  173. Beard P35 and Tubes Replacement
  174. Graphic 1/3 Octave Tube Equaliser
  175. GE "Dual Speaker" radio to Harmony H303 conversion : Help, please?
  176. Power Supply Design
  177. Gomes amp
  178. pignose g40v power transformer
  179. Grid battery biased SE output stages
  180. KT88 amp schematic/parts list
  181. Wire Wrap connections for point to point
  182. Aikido Tubes
  183. Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300
  184. Schematic Question
  185. EL34 as triode?
  186. Linestage Questions
  187. Help! Building Jax's HFTA
  188. Gobs of AC on ISCO 494
  189. Change step up ratio of input transformer?
  190. LCR RIAA rebuild
  191. common mode choke question
  192. Choosing Choke
  193. Input impedance
  194. Hey Tubelab, Transformer Question
  195. Hybrid Rectifier Check Please !
  196. 1st tube project, tubalizer?
  197. 1st Time project - Report 1
  198. ED-8000 set amp
  199. Hitachi v-202 scope
  200. Cheap and nice looking SE OPT
  201. How much difference 0.22 vs 0.33 cap?
  202. Tubelab SimpleSE
  203. 813 final design?
  204. HPHV regulator, designed by Emile Sprenger
  205. Counterpoint tube amps
  206. SS or tube voltage amplifying stages in an amp with tube output?
  207. 24V Aikido --> 6GM8 with Buffer
  208. Motorboating in Dynaco ST-70
  209. Does such a tube exist?
  210. Noisy PSU?
  211. Bell & Howell amp
  212. Valve Amp with soild state front end
  213. Controlling transient response
  214. Transcendar Budget SE Transformers
  215. Opinion on New Sensor 6SN7GTB?
  216. Determining optimal OT turns ratio
  217. Splitting up the Power Amp
  218. Sowter 5113
  219. Cascoded 6N6P
  220. MachMat or Tentlabs Heater Supply for 300B
  221. Common mode filtering for heater supplies.
  222. Distortion.
  223. 83 rectifier peak repetitive current?
  224. 813 Project has begun !
  225. C3G PX25 DRD - Will it work
  226. 6J5 (Metal Tubes) ....something goes around inside
  227. common-mode chokes
  228. EL-34 and 100k pot
  229. Scott 299 (late) OPT's
  230. Tube magazines
  231. PP plate-choke?
  232. More Phase Splitting Questions
  233. Concertina sanity check
  234. Transformer Specs
  235. The Aikido or Moskido??
  236. KT88 PP suggestion
  237. Ultrapath line amp
  238. Gross loudspeaker cone movement when using tube amps.
  239. Pre-amp power iron advice??
  240. Class A 8417 Amp
  241. DHT output tubes and DC heating
  242. rock music and SE?
  243. Disadvantages of using Zobel and Series notch filter ?
  244. old days source
  245. Mu-follower vs common cathode w/- active load
  246. K40 or K42 Russian PIO: what would you use/recommend?
  247. CCS turning off prematurely?
  248. ESL amp again!
  249. calling Moray James, and others ..wav8 or 6BM8 schemtics--PP.
  250. Does anyone know the output transformer specs of the...

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