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  1. photos of my creations
  2. First Time Project - Finished! Photos Attached
  3. Design parameters for SE OPTs'
  4. want to build a pentode driven drd 2a3!
  5. Passive Magnetic Preamp!
  6. Testing an E288CC (8223)
  7. Need expert help on presence control
  8. Value of output caps for Aikido - how low is too low?
  9. Very expensive WE106A pre-amp, any member had this??
  10. B+ with or without tubes?
  11. 1st Time Project - Spot the howler
  12. Tube flashes on tester... Bad ?
  13. Amp advice needed for a poor DIY er...
  14. DCR of primaries and secondaries of Hammond Transformer
  15. 801 amp with Power Drive
  16. Where did this come from?
  17. 6N7S's PPP Class A
  18. your opinion needed.......
  19. ST-70 strangeness
  20. SS preamp w/ tube amp
  21. pri. impedance vs. sek. impedance
  22. TubeLab SimpleSe and speaker efficiency
  23. Question about speaker transformer
  24. How to read Russian Date Codes
  25. 300B Amp on ebay
  26. Would a 396A or 2C51 drive a 45?
  27. PSUD2 Q on regulator
  28. My last design
  29. OPT for 250th Se A2
  30. 829B, 3E29, QQV03-20 Connector
  31. Measuring from UK schematic but on US mains
  32. strange tube
  33. cathode resistor ?? in p-p fixed bias
  34. Need Help please . Headphones into line up of tube amp .
  35. 5Z4 inrush current too high
  36. Reducing gain on Audible Illusions M3A
  37. Decoding output transformers: strange SE's
  38. cheap and usable for 1K p-p iron?
  39. Help! Phono stage LF instability
  40. Help! Mesa Stiletto is motorboating and then fuse blows
  41. Faulty tube?
  42. Philbrick opamp bases
  43. Hammond Driver transformers
  44. 6n7/2a3
  45. Flea power for cheap OPT's?
  46. 1st Project - Half time report
  47. Claus Byrith 4-30 Questions
  48. quicksilver 8417 biasing
  49. 6sl7
  50. Trying to identify/find documentation on a 50EH5 amp
  51. Basic tests and measurements for OPTs
  52. 6SN7GT SRSE Linestage
  53. Dynaco Mark III
  54. Push Pull 300B preliminary
  55. triode thermodynamic model
  56. My first post!
  57. A Neophyte's 12B4 Build Thread
  58. Webster Hammond Model "G" amplifier
  59. Matching tubes- WE 396a/RFT EL34
  60. What is the most powerful AF tube amp ever built?
  61. SOHA Amp & PSU Layout, need feedback
  62. smoke came from transformer
  63. Startup Cost?
  64. Old or new output transformer?
  65. speaker magnet proximity Question
  66. Russian L3-3 tube tester
  67. I made a web page on building triode models /w CurveCaptor
  68. Boosted Triode mode?
  69. Unbalacing a PP output transformer?
  70. Double C Cores
  71. Aikido Power Supply
  72. Output Noise question
  73. Power Supply Ringing
  74. Compare Sowter SA08 with Plitron 3035SE for 300B
  75. My 6C33C SING WITH No SPEAKER !
  76. MOSFET Driver for Power Pentodes
  77. Floating heater supplies
  78. Altec Amplifiers
  79. What causes the overrun bias on V4?
  80. sound comparison of Class A1 vs A2 amps
  81. 12AU7 substituted for a 6922
  82. Whats the worst that could happen?
  83. Ferranti transformers
  84. PC Cooling Fans for Tube Amps
  85. 845 circuit suggestions
  86. DIY Sofia tube tester?
  87. transformer hum / buzz getting into B+?
  88. Safe Transformerless Amps Possible?
  89. GM70 Lower Voltage PP Question
  90. phonostage with 150VDC B+
  91. Spuddo more powerfull
  92. Larry Moore 300B/10Y/6SN7GT
  93. Foreplay Preamp volume popping
  94. Altec Tube Amplifiers
  95. Circuit review
  96. DIY Tube Tester for 6336s
  97. 12dw7 to 12ax7 conversion?
  98. 26 preamp
  99. Etf07
  100. 1st Project Heater Wiring
  101. Dropped tube
  102. Great bench supply for tube work.
  103. Mullard px25 - need matched pair
  104. 2W carbon composit ressy
  105. popping noise through 1 channel on Radford STA15
  106. Point to point wiring help
  107. 1st Time Project - Report 2 + advice sought
  108. "Simple" 2A3
  109. vinyl v cd differences - phono pre and cd-player
  110. Shielded input cable
  111. Coupling caps in ST35
  112. Mentmore M100
  113. How to match tubes?
  114. Transcendent OTL T8 Vs. Atma-Sphere M60
  115. New 12AX7A Pspice model
  116. What does R2D2, Mickey Mouse and a...
  117. Why 5V filament
  118. Alloys for filaments
  119. 6360 as Power Tube for SE amp
  120. Bridging Stereo Amps
  121. Problem with 6L6 Monoblock
  122. Gain
  123. Proper grounding method...
  124. Changing a tube amp...
  125. Houston Mini 2004 Pot question
  126. Diode Heatsink
  127. Looking for a PCB / kit for a bipolar tube rectified PSU
  128. compactron output stage and power supply
  129. Better sounding ECL86's
  130. interesting amp & interesting problem
  131. Hybrid Tube / Mosfet Amplifier
  132. Again (sorry) what's the biggest 6V heater double rectifier?
  133. PP EL34 circuit wanted
  134. Need advice for transformer for tube GM 70.
  135. Pentode filter
  136. How to calculate for cathode follower
  137. 6L6WXT in a Dynaco ST-70
  138. tube preamp using submini tube
  139. SE Trafo for PP use
  140. WE91A Pentode Questions?
  141. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  142. looking for schematic; three EL84's in PSE ?
  143. Need work done on a dynaco power amp
  144. quick question on fixed bias
  145. DIY Tube Audio dealers in New Zealand
  146. ornec
  147. Tuner filament supply question
  148. An idea for a partial feedback pentode amp using 6AU6's and 807's
  149. Tube current regulation for series heaters' supply.
  150. Bogen PCA-1 two tube booster amp
  151. First time building a tube preamp
  152. B&K 700 problems?
  153. Voltage Multipliers
  154. Russian 6P14P tubes
  155. Where to get tube spec sheets, pinouts
  156. PCL 82 Hybrid 2SC5200/2SA1943
  157. CCS in Otput Tube Cathode - Does It Make Sense?
  158. My brew of the "Darling"
  159. Series connection of filaments
  160. noisy filament transformer
  161. Circuit diagram for Trilogy VTi.
  162. Got oddball tubes!
  163. A photo for my question
  164. Make a preamp with an already buil amplifier
  165. DN2540
  166. mods for almarro amp
  167. Filament Transformer
  168. Circuit indentification
  169. Simplest Tube Regulated PSU?
  170. High Voltage Insulator for Umbilical
  171. wiring diagram, instruction on the transformer S-265-Q
  172. help me get started
  173. 12AU7 instead of 6C4
  174. Fisher 600 questions
  175. Phase inverter
  176. srpp input stage
  177. Orientation of EL34 Tubes
  178. Load termination ?
  179. Advice on SE DHT for Lowther Fidelio DX2
  180. Dynacord MV46 as a compressor
  181. Biggest dual triode output tube?
  182. OPT impedance question
  183. Partridge SE O/P transformers
  184. SimpleSE and me
  185. SRPP decoupling cap vs. output transformer
  186. Differences between 6SN7GTA and 6SN7GTB?
  187. Radford STA-15 questions
  188. Balanced Input Hookup
  189. Need Tube Testing Settings for 3 tubes
  190. Need helping in Grounded Grid preamp using 6H6P 6H30P
  191. Regulated Lab DC power supply
  192. Fixed Bias 6BQ5?
  193. Heathkit AG7 Audio Geneator
  194. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  195. NEWBIE question SET vs. Solid State
  196. 6N6P cascode + 6AS7 Cathode follower
  197. Help me calculator OPT for 807, 6C4C tubes.
  198. Now I have caught the bug - next project
  199. 20W cathode follower amplifier
  200. Muting line level signals
  201. Anywhere in Hong Kong...
  202. RIAA / Pre mod/upgrade
  203. IT WORKS! Tube Phono Stage
  204. 2033 info sought
  205. Pentode Zeus
  206. 5987 (sc968b)
  207. Low Voltage Plate Follower 6DJ8 Buffer Power Supply
  208. JAN Sylvania 7308 vs. JAN Sylvania 6922
  209. recording amp
  210. A Tee-Vee T00b Amp
  211. Locating a bad resistor
  212. MiscEI
  213. ST70 iron recommendations please
  214. need help finding a link . . .
  215. Cathodyne Phase Inverter question
  216. Using a ignition coil for a audio transformer
  217. Multiple primary windings
  218. mcintosh mc3500 clone
  219. B+ Delay
  220. My attempt: 5 element Pentode Spice model
  221. Spelling, capitalization, and grammar.
  222. Power Supply
  223. Output Autotransformers
  224. Multi Section Cap....diy?
  225. Mullard: Tube Circuits for Audio Amplifiers" - Price?
  226. Tube rectifier to Solid state Diodes exchange
  227. Hickok 533A help
  228. Custom Cards For B&K 675 Tester
  229. EMC Model 200 Tube Tester Any Info Pls
  230. Bada PH-1 simple box mod
  231. Tubes Rectifier Help?
  232. How to make sense of LTSpice FFT analysis?
  233. Cascode with local feedback
  234. amps
  235. how to preserve copper plates?
  236. Stereo EL34 amplifier
  237. tube amp transformer identification
  238. SA 3000 Counterpoint
  239. Beginner needs advices for 807 PP project
  240. Heater Power Supply Pspice model
  241. FWCT Rectification
  242. dc or not dc
  243. OTL for dummies.
  244. TCJ Cathode-Coupled Amplifier
  245. 845 Low voltage SE AMP
  246. Vacuum Tube Computer Simulation Modeling
  247. Getting a vintage amp to work
  248. Switched DC/DCconverter for B+
  249. What can I do with this?
  250. Super Pas Two

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