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  1. EH EL34's at +600V?
  2. The Infamous Kay 703C! - Help finding an output transformer?
  3. MOT's as output transformers?
  4. Grain oriented silicon steel core data needed
  5. Gibson reverb driver transformer
  6. PSUD II help
  7. Edcor In SE Guitar Amp
  8. Tube curves
  9. S-5 electronics amp kits
  10. up-to-date El Cheapo schematic
  11. unknown output trannie
  12. Help needed with KT88 Amp design
  13. Bogen MX60a
  14. AIKIDO - Low-volage with buffer version
  15. 6N6P cascode calculation
  16. 866a Min operating voltages
  17. new 6V6 amp
  18. Tube-based CCS- 0.2uF cap OK?
  19. DHT filament PSU: What would you do?
  20. PSU problem
  21. 811A se amp using a solid state driver
  22. ECC83 - Long Plate vs Short Plate
  23. Tube Matching
  24. Cascoded mu-follower
  25. DIY speaker choice for SE
  26. Output transformer wanted
  27. big valve traffo for guitar amp?
  28. Tube Tester
  29. 835 amp
  30. One 300B filament supply for stereo?
  31. Aikido Built At Last!!
  32. Question about amount of feedback to apply
  33. design help needed.
  34. LED in cathode
  35. Need help for Eico 1030 regulated power supply
  36. zinc chassis
  37. Anode Cap Question
  38. what pins to use solid rectifier for 5Y3
  39. New PSU for Aikido?
  40. tube anti-vibration mounting
  41. Border Patrol PSU, can anyone help?
  42. Aikido Line Stage
  43. LED Bias Modifications
  44. danelectro vibravox
  45. Standby switch for bridge rectified power supplies.
  46. Decoupling in Phono stages.
  47. easy one valve pre help
  48. Single-ended-series amp with a "1 winding" transformer
  49. Complementary Symmetry Output
  50. Help getting these d$&* Dynascan probes apart!
  51. Aikido output cap selector switch
  52. adding an "on" lamp to amp kit
  53. Why does 6BM8 have so high max plate voltage?
  54. B+ soft start
  55. Unison research
  56. photos of my creations
  57. First Time Project - Finished! Photos Attached
  58. Design parameters for SE OPTs'
  59. want to build a pentode driven drd 2a3!
  60. Passive Magnetic Preamp!
  61. Testing an E288CC (8223)
  62. Need expert help on presence control
  63. Value of output caps for Aikido - how low is too low?
  64. Very expensive WE106A pre-amp, any member had this??
  65. B+ with or without tubes?
  66. 1st Time Project - Spot the howler
  67. Tube flashes on tester... Bad ?
  68. Amp advice needed for a poor DIY er...
  69. DCR of primaries and secondaries of Hammond Transformer
  70. 801 amp with Power Drive
  71. Where did this come from?
  72. 6N7S's PPP Class A
  73. your opinion needed.......
  74. ST-70 strangeness
  75. SS preamp w/ tube amp
  76. pri. impedance vs. sek. impedance
  77. TubeLab SimpleSe and speaker efficiency
  78. Question about speaker transformer
  79. How to read Russian Date Codes
  80. 300B Amp on ebay
  81. Would a 396A or 2C51 drive a 45?
  82. PSUD2 Q on regulator
  83. My last design
  84. Silvertone 1481 power transformer?
  85. OPT for 250th Se A2
  86. 829B, 3E29, QQV03-20 Connector
  87. Measuring from UK schematic but on US mains
  88. strange tube
  89. cathode resistor ?? in p-p fixed bias
  90. Need Help please . Headphones into line up of tube amp .
  91. 5Z4 inrush current too high
  92. Reducing gain on Audible Illusions M3A
  93. Decoding output transformers: strange SE's
  94. cheap and usable for 1K p-p iron?
  95. Help! Phono stage LF instability
  96. Help! Mesa Stiletto is motorboating and then fuse blows
  97. Faulty tube?
  98. Philbrick opamp bases
  99. Hammond Driver transformers
  100. 6n7/2a3
  101. Flea power for cheap OPT's?
  102. 1st Project - Half time report
  103. Claus Byrith 4-30 Questions
  104. quicksilver 8417 biasing
  105. 6sl7
  106. Trying to identify/find documentation on a 50EH5 amp
  107. Basic tests and measurements for OPTs
  108. 6SN7GT SRSE Linestage
  109. Dynaco Mark III
  110. Push Pull 300B preliminary
  111. triode thermodynamic model
  112. My first post!
  113. A Neophyte's 12B4 Build Thread
  114. Webster Hammond Model "G" amplifier
  115. Matching tubes- WE 396a/RFT EL34
  116. What is the most powerful AF tube amp ever built?
  117. SOHA Amp & PSU Layout, need feedback
  118. smoke came from transformer
  119. Startup Cost?
  120. Old or new output transformer?
  121. speaker magnet proximity Question
  122. Russian L3-3 tube tester
  123. I made a web page on building triode models /w CurveCaptor
  124. Boosted Triode mode?
  125. Unbalacing a PP output transformer?
  126. ecl86 & ez80 - suitable for guitar amp?
  127. Double C Cores
  128. Aikido Power Supply
  129. Output Noise question
  130. Power Supply Ringing
  131. Compare Sowter SA08 with Plitron 3035SE for 300B
  132. My 6C33C SING WITH No SPEAKER !
  133. MOSFET Driver for Power Pentodes
  134. Floating heater supplies
  135. Altec Amplifiers
  136. What causes the overrun bias on V4?
  137. sound comparison of Class A1 vs A2 amps
  138. 12AU7 substituted for a 6922
  139. Whats the worst that could happen?
  140. Ferranti transformers
  141. PC Cooling Fans for Tube Amps
  142. 845 circuit suggestions
  143. DIY Sofia tube tester?
  144. transformer hum / buzz getting into B+?
  145. Safe Transformerless Amps Possible?
  146. GM70 Lower Voltage PP Question
  147. phonostage with 150VDC B+
  148. Spuddo more powerfull
  149. Larry Moore 300B/10Y/6SN7GT
  150. Foreplay Preamp volume popping
  151. Altec Tube Amplifiers
  152. Circuit review
  153. DIY Tube Tester for 6336s
  154. 12dw7 to 12ax7 conversion?
  155. 26 preamp
  156. Etf07
  157. 1st Project Heater Wiring
  158. Dropped tube
  159. Great bench supply for tube work.
  160. Mullard px25 - need matched pair
  161. 2W carbon composit ressy
  162. popping noise through 1 channel on Radford STA15
  163. Point to point wiring help
  164. 1st Time Project - Report 2 + advice sought
  165. "Simple" 2A3
  166. vinyl v cd differences - phono pre and cd-player
  167. Shielded input cable
  168. knight guitar amp conversion
  169. Dumb motor run capacitor question
  170. Coupling caps in ST35
  171. Mentmore M100
  172. How to match tubes?
  173. Transcendent OTL T8 Vs. Atma-Sphere M60
  174. New 12AX7A Pspice model
  175. What does R2D2, Mickey Mouse and a...
  176. Why 5V filament
  177. Alloys for filaments
  178. 6360 as Power Tube for SE amp
  179. Bridging Stereo Amps
  180. Problem with 6L6 Monoblock
  181. Gain
  182. Proper grounding method...
  183. Changing a tube amp...
  184. Houston Mini 2004 Pot question
  185. Diode Heatsink
  186. Looking for a PCB / kit for a bipolar tube rectified PSU
  187. compactron output stage and power supply
  188. Better sounding ECL86's
  189. Heathkit EA-3 conversion to guitar amp
  190. interesting amp & interesting problem
  191. Hybrid Tube / Mosfet Amplifier
  192. Again (sorry) what's the biggest 6V heater double rectifier?
  193. PP EL34 circuit wanted
  194. Need advice for transformer for tube GM 70.
  195. Pentode filter
  196. How to calculate for cathode follower
  197. 6L6WXT in a Dynaco ST-70
  198. tube preamp using submini tube
  199. SE Trafo for PP use
  200. WE91A Pentode Questions?
  201. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  202. looking for schematic; three EL84's in PSE ?
  203. Need work done on a dynaco power amp
  204. quick question on fixed bias
  205. DIY Tube Audio dealers in New Zealand
  206. ornec
  207. Tuner filament supply question
  208. An idea for a partial feedback pentode amp using 6AU6's and 807's
  209. Tube current regulation for series heaters' supply.
  210. Bogen PCA-1 two tube booster amp
  211. First time building a tube preamp
  212. B&K 700 problems?
  213. Silvertone 1482 Blowing Rectifier Tubes
  214. Voltage Multipliers
  215. Russian 6P14P tubes
  216. Where to get tube spec sheets, pinouts
  217. PCL 82 Hybrid 2SC5200/2SA1943
  218. CCS in Otput Tube Cathode - Does It Make Sense?
  219. My Guitar Tube Amp. Help needed with Mesa/Boogie pre
  220. My brew of the "Darling"
  221. Series connection of filaments
  222. noisy filament transformer
  223. Circuit diagram for Trilogy VTi.
  224. Got oddball tubes!
  225. A photo for my question
  226. Make a preamp with an already buil amplifier
  227. DN2540
  228. mods for almarro amp
  229. Filament Transformer
  230. Circuit indentification
  231. Simplest Tube Regulated PSU?
  232. High Voltage Insulator for Umbilical
  233. wiring diagram, instruction on the transformer S-265-Q
  234. help me get started
  235. 12AU7 instead of 6C4
  236. Fisher 600 questions
  237. Phase inverter
  238. srpp input stage
  239. Orientation of EL34 Tubes
  240. Load termination ?
  241. Advice on SE DHT for Lowther Fidelio DX2
  242. Dynacord MV46 as a compressor
  243. Biggest dual triode output tube?
  244. OPT impedance question
  245. Partridge SE O/P transformers
  246. SimpleSE and me
  247. SRPP decoupling cap vs. output transformer
  248. Differences between 6SN7GTA and 6SN7GTB?
  249. Radford STA-15 questions
  250. Balanced Input Hookup

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