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  1. noisy filament transformer
  2. Circuit diagram for Trilogy VTi.
  3. Got oddball tubes!
  4. A photo for my question
  5. Make a preamp with an already buil amplifier
  6. DN2540
  7. mods for almarro amp
  8. Filament Transformer
  9. Circuit indentification
  10. Simplest Tube Regulated PSU?
  11. High Voltage Insulator for Umbilical
  12. wiring diagram, instruction on the transformer S-265-Q
  13. help me get started
  14. 12AU7 instead of 6C4
  15. Fisher 600 questions
  16. Phase inverter
  17. srpp input stage
  18. Orientation of EL34 Tubes
  19. Load termination ?
  20. Advice on SE DHT for Lowther Fidelio DX2
  21. Dynacord MV46 as a compressor
  22. Biggest dual triode output tube?
  23. OPT impedance question
  24. Partridge SE O/P transformers
  25. SimpleSE and me
  26. SRPP decoupling cap vs. output transformer
  27. Differences between 6SN7GTA and 6SN7GTB?
  28. Radford STA-15 questions
  29. Balanced Input Hookup
  30. Need Tube Testing Settings for 3 tubes
  31. Need helping in Grounded Grid preamp using 6H6P 6H30P
  32. Regulated Lab DC power supply
  33. Fixed Bias 6BQ5?
  34. Heathkit AG7 Audio Geneator
  35. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  36. NEWBIE question SET vs. Solid State
  37. 6N6P cascode + 6AS7 Cathode follower
  38. Help me calculator OPT for 807, 6C4C tubes.
  39. Now I have caught the bug - next project
  40. 20W cathode follower amplifier
  41. Muting line level signals
  42. Anywhere in Hong Kong...
  43. RIAA / Pre mod/upgrade
  44. IT WORKS! Tube Phono Stage
  45. 2033 info sought
  46. Pentode Zeus
  47. 5987 (sc968b)
  48. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  49. JAN Sylvania 7308 vs. JAN Sylvania 6922
  50. recording amp
  51. A Tee-Vee T00b Amp
  52. metal tube lineup for a guitar amp
  53. Locating a bad resistor
  54. MiscEI
  55. ST70 iron recommendations please
  56. need help finding a link . . .
  57. Cathodyne Phase Inverter question
  58. Using a ignition coil for a audio transformer
  59. Multiple primary windings
  60. mcintosh mc3500 clone
  61. B+ Delay
  62. My attempt: 5 element Pentode Spice model
  63. Spelling, capitalization, and grammar.
  64. Power Supply
  65. Output Autotransformers
  66. Multi Section Cap....diy?
  67. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  68. Tube rectifier to Solid state Diodes exchange
  69. Hickok 533A help
  70. Custom Cards For B&K 675 Tester
  71. Peavey Heritage VTX - Bias Question
  72. EMC Model 200 Tube Tester Any Info Pls
  73. Guitar amp PT design questions
  74. Bada PH-1 simple box mod
  75. Tubes Rectifier Help?
  76. How to make sense of LTSpice FFT analysis?
  77. Cascode with local feedback
  78. amps
  79. how to preserve copper plates?
  80. Stereo EL34 amplifier
  81. SA 3000 Counterpoint
  82. tube amp transformer identification
  83. Beginner needs advices for 807 PP project
  84. Heater Power Supply Pspice model
  85. FWCT Rectification
  86. dc or not dc
  87. OTL for dummies.
  88. TCJ Cathode-Coupled Amplifier
  89. 845 Low voltage SE AMP
  90. Vacuum Tube Computer Simulation Modeling
  91. Getting a vintage amp to work
  92. Switched DC/DCconverter for B+
  93. What can I do with this?
  94. Super Pas Two
  95. pspice model of 811A
  96. Question on what is more important B+ or Plate Voltage
  97. Can I trust SPICE?
  98. Power supply filter mod
  99. Does antone interested xxx PCB groupbuy ?
  100. 1 signal ground or two?
  101. Peavey Heritage VTX - Schematics
  102. #47......
  103. Hammond 1650F
  104. 100 watt KT88/6550 Designs
  105. What glue to use for tube glass bulb + base
  106. Tube filaments (heaters) power supply
  107. Quick Ecl86/6gw8 Amp
  108. Need help on eq. hook up for new tube system
  109. Alternatives to the Dynaco ST-70
  110. I need some eq. hook up expert advice please!
  111. Please help identify which plug I need for this socket
  112. Svetlana KT88 winged C's failings
  113. PP amp using 6p15P
  114. Time for another round of "Criticise my Circuit"... err..I mean
  115. Adding a parallel feed on DRD
  116. How hot can resistor stands?
  117. Hybrid amplifier A2 class
  118. Diodes on power supply output for voltage drop?
  119. Converting from single ended parafeed to differential
  120. micro-amp SE with 2,5k OPT+
  121. Unknown Tube Amp
  122. Aikido AC Heater Supply
  123. Help me find some odd looking rectifiers!
  124. So, you may have been wondering...(813 Content !)
  125. Just sharing my 26 experience last night...
  126. Simple 5842-45 SET Amp Design Idea
  127. Yamamoto teflon sockets
  128. new thread, 6BM8 PP build begins...
  129. KT88 Heater Current
  130. 150V plate output tubes
  131. Newbie need to help
  132. Help me please
  133. Elekit TU-870 help
  134. Looking for schematic of Audible Illusion Modulus 3A preamp
  135. Junker Box amp
  136. aikido hybrid with 5 A bias
  137. Shall we compile a list?
  138. drift in direct coupled tubes
  139. Hammond 2XX vs 3XX Power Tranny Questions
  140. Help with this transformer please...
  141. Capacitor upgrade in Paragon 12A
  142. Light bulbs as cathode resistors?
  143. Favorite Threads and Posts in "Tubes" Forum
  144. I need 12v DC- whats the best option?
  145. Beard P35 and Tubes Replacement
  146. Graphic 1/3 Octave Tube Equaliser
  147. GE "Dual Speaker" radio to Harmony H303 conversion : Help, please?
  148. Power Supply Design
  149. Gomes amp
  150. pignose g40v power transformer
  151. Grid battery biased SE output stages
  152. KT88 amp schematic/parts list
  153. Wire Wrap connections for point to point
  154. Aikido Tubes
  155. Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300
  156. Schematic Question
  157. EL34 as triode?
  158. Linestage Questions
  159. Help! Building Jax's HFTA
  160. Gobs of AC on ISCO 494
  161. Change step up ratio of input transformer?
  162. LCR RIAA rebuild
  163. common mode choke question
  164. Choosing Choke
  165. Input impedance
  166. Hey Tubelab, Transformer Question
  167. Hybrid Rectifier Check Please !
  168. 1st tube project, tubalizer?
  169. 1st Time project - Report 1
  170. ED-8000 set amp
  171. Hitachi v-202 scope
  172. Cheap and nice looking SE OPT
  173. How much difference 0.22 vs 0.33 cap?
  174. Tubelab SimpleSE
  175. 813 final design?
  176. HPHV regulator, designed by Emile Sprenger
  177. Counterpoint tube amps
  178. SS or tube voltage amplifying stages in an amp with tube output?
  179. 24V Aikido --> 6GM8 with Buffer
  180. Motorboating in Dynaco ST-70
  181. Does such a tube exist?
  182. Noisy PSU?
  183. Bell & Howell amp
  184. Valve Amp with soild state front end
  185. Controlling transient response
  186. Transcendar Budget SE Transformers
  187. Opinion on New Sensor 6SN7GTB?
  188. Determining optimal OT turns ratio
  189. Splitting up the Power Amp
  190. Sowter 5113
  191. Cascoded 6N6P
  192. MachMat or Tentlabs Heater Supply for 300B
  193. Common mode filtering for heater supplies.
  194. Distortion.
  195. 83 rectifier peak repetitive current?
  196. 813 Project has begun !
  197. C3G PX25 DRD - Will it work
  198. 6J5 (Metal Tubes) ....something goes around inside
  199. common-mode chokes
  200. EL-34 and 100k pot
  201. Scott 299 (late) OPT's
  202. Tube magazines
  203. PP plate-choke?
  204. More Phase Splitting Questions
  205. Concertina sanity check
  206. Transformer Specs
  207. The Aikido or Moskido??
  208. KT88 PP suggestion
  209. Ultrapath line amp
  210. Gross loudspeaker cone movement when using tube amps.
  211. Pre-amp power iron advice??
  212. Class A 8417 Amp
  213. DHT output tubes and DC heating
  214. rock music and SE?
  215. Disadvantages of using Zobel and Series notch filter ?
  216. old days source
  217. Mu-follower vs common cathode w/- active load
  218. K40 or K42 Russian PIO: what would you use/recommend?
  219. CCS turning off prematurely?
  220. ESL amp again!
  221. calling Moray James, and others ..wav8 or 6BM8 schemtics--PP.
  222. Does anyone know the output transformer specs of the...
  223. SE EL84 project for my friend
  224. SE amplifier - How much power?
  225. what speakers do you use?
  226. A Tube amp for a Hostille Tube Enviornment
  227. practical choice for an amp
  228. Simple cathode CCS
  229. 2A3s in push pull; class A
  230. 5 VDC heater question
  231. Power transformer snerring.
  232. Subminiature Tube & Tripath Hybrid Integrated
  233. 211
  234. Which of these output tubes?
  235. High Voltage Heater info
  236. 6SL7 in place of a 12AX7?
  237. DHT Tubes
  238. Driving 6AQ5's
  239. schematic wanted
  240. 807s replacing 6L6GCs
  241. Shielded vs twisted pair in internal wiring
  242. tube basics: computing mu and transconductance
  243. Aluminium vs steel chassis
  244. Etf06 & 07
  245. FU 13 tubes
  246. Good Souinding Direct Replacement For 325 / OP 37
  247. how to wire 6.3VDC heater on a heater with center tap (12.6V series, 6.3V parallel)?
  248. The Russian 5U4M is a 5AR4 equivalent ?
  249. WE427A Cold Cathode Diode
  250. reversing polarity in regulated B+ and other question

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