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  1. Philips Tube radio
  2. Improve Avel toroid in OTL amp
  3. tube pre amp mods in queensland, australia
  4. 6SL7GT pre-amp
  5. Aikido circuit question
  6. question
  7. Edcor OPT's w/ SimpleSE
  8. Please check this PSU
  9. met. MKP in oil capacitors for PSU?
  10. EH EL34's at +600V?
  11. The Infamous Kay 703C! - Help finding an output transformer?
  12. MOT's as output transformers?
  13. Grain oriented silicon steel core data needed
  14. Gibson reverb driver transformer
  15. PSUD II help
  16. Edcor In SE Guitar Amp
  17. Tube curves
  18. S-5 electronics amp kits
  19. up-to-date El Cheapo schematic
  20. unknown output trannie
  21. Help needed with KT88 Amp design
  22. Bogen MX60a
  23. AIKIDO - Low-volage with buffer version
  24. 6N6P cascode calculation
  25. 866a Min operating voltages
  26. new 6V6 amp
  27. Tube-based CCS- 0.2uF cap OK?
  28. DHT filament PSU: What would you do?
  29. PSU problem
  30. 811A se amp using a solid state driver
  31. ECC83 - Long Plate vs Short Plate
  32. Tube Matching
  33. Cascoded mu-follower
  34. DIY speaker choice for SE
  35. Output transformer wanted
  36. big valve traffo for guitar amp?
  37. Tube Tester
  38. 835 amp
  39. One 300B filament supply for stereo?
  40. Aikido Built At Last!!
  41. Question about amount of feedback to apply
  42. design help needed.
  43. LED in cathode
  44. Need help for Eico 1030 regulated power supply
  45. zinc chassis
  46. Anode Cap Question
  47. what pins to use solid rectifier for 5Y3
  48. New PSU for Aikido?
  49. tube anti-vibration mounting
  50. Border Patrol PSU, can anyone help?
  51. Aikido Line Stage
  52. LED Bias Modifications
  53. danelectro vibravox
  54. Standby switch for bridge rectified power supplies.
  55. Decoupling in Phono stages.
  56. easy one valve pre help
  57. Single-ended-series amp with a "1 winding" transformer
  58. Complementary Symmetry Output
  59. Help getting these d$&* Dynascan probes apart!
  60. Aikido output cap selector switch
  61. adding an "on" lamp to amp kit
  62. Why does 6BM8 have so high max plate voltage?
  63. B+ soft start
  64. Unison research
  65. photos of my creations
  66. First Time Project - Finished! Photos Attached
  67. Design parameters for SE OPTs'
  68. want to build a pentode driven drd 2a3!
  69. Passive Magnetic Preamp!
  70. Testing an E288CC (8223)
  71. Need expert help on presence control
  72. Value of output caps for Aikido - how low is too low?
  73. Very expensive WE106A pre-amp, any member had this??
  74. B+ with or without tubes?
  75. 1st Time Project - Spot the howler
  76. Tube flashes on tester... Bad ?
  77. Amp advice needed for a poor DIY er...
  78. DCR of primaries and secondaries of Hammond Transformer
  79. 801 amp with Power Drive
  80. Where did this come from?
  81. 6N7S's PPP Class A
  82. your opinion needed.......
  83. ST-70 strangeness
  84. SS preamp w/ tube amp
  85. pri. impedance vs. sek. impedance
  86. TubeLab SimpleSe and speaker efficiency
  87. Question about speaker transformer
  88. How to read Russian Date Codes
  89. 300B Amp on ebay
  90. Would a 396A or 2C51 drive a 45?
  91. PSUD2 Q on regulator
  92. My last design
  93. Silvertone 1481 power transformer?
  94. OPT for 250th Se A2
  95. 829B, 3E29, QQV03-20 Connector
  96. Measuring from UK schematic but on US mains
  97. strange tube
  98. cathode resistor ?? in p-p fixed bias
  99. Need Help please . Headphones into line up of tube amp .
  100. 5Z4 inrush current too high
  101. Reducing gain on Audible Illusions M3A
  102. Decoding output transformers: strange SE's
  103. cheap and usable for 1K p-p iron?
  104. Help! Phono stage LF instability
  105. Help! Mesa Stiletto is motorboating and then fuse blows
  106. Faulty tube?
  107. Philbrick opamp bases
  108. Hammond Driver transformers
  109. 6n7/2a3
  110. Flea power for cheap OPT's?
  111. 1st Project - Half time report
  112. Claus Byrith 4-30 Questions
  113. quicksilver 8417 biasing
  114. 6sl7
  115. Trying to identify/find documentation on a 50EH5 amp
  116. Basic tests and measurements for OPTs
  117. 6SN7GT SRSE Linestage
  118. Dynaco Mark III
  119. Push Pull 300B preliminary
  120. triode thermodynamic model
  121. My first post!
  122. A Neophyte's 12B4 Build Thread
  123. Webster Hammond Model "G" amplifier
  124. Matching tubes- WE 396a/RFT EL34
  125. What is the most powerful AF tube amp ever built?
  126. SOHA Amp & PSU Layout, need feedback
  127. smoke came from transformer
  128. Startup Cost?
  129. Old or new output transformer?
  130. speaker magnet proximity Question
  131. Russian L3-3 tube tester
  132. I made a web page on building triode models /w CurveCaptor
  133. Boosted Triode mode?
  134. Unbalacing a PP output transformer?
  135. ecl86 & ez80 - suitable for guitar amp?
  136. Double C Cores
  137. Aikido Power Supply
  138. Output Noise question
  139. Power Supply Ringing
  140. Compare Sowter SA08 with Plitron 3035SE for 300B
  141. My 6C33C SING WITH No SPEAKER !
  142. MOSFET Driver for Power Pentodes
  143. Floating heater supplies
  144. Altec Amplifiers
  145. What causes the overrun bias on V4?
  146. sound comparison of Class A1 vs A2 amps
  147. 12AU7 substituted for a 6922
  148. Whats the worst that could happen?
  149. Ferranti transformers
  150. PC Cooling Fans for Tube Amps
  151. 845 circuit suggestions
  152. DIY Sofia tube tester?
  153. transformer hum / buzz getting into B+?
  154. Safe Transformerless Amps Possible?
  155. GM70 Lower Voltage PP Question
  156. phonostage with 150VDC B+
  157. Spuddo more powerfull
  158. Larry Moore 300B/10Y/6SN7GT
  159. Foreplay Preamp volume popping
  160. Altec Tube Amplifiers
  161. Circuit review
  162. DIY Tube Tester for 6336s
  163. 12dw7 to 12ax7 conversion?
  164. 26 preamp
  165. Etf07
  166. 1st Project Heater Wiring
  167. Dropped tube
  168. Great bench supply for tube work.
  169. Mullard px25 - need matched pair
  170. 2W carbon composit ressy
  171. popping noise through 1 channel on Radford STA15
  172. Point to point wiring help
  173. 1st Time Project - Report 2 + advice sought
  174. "Simple" 2A3
  175. vinyl v cd differences - phono pre and cd-player
  176. Shielded input cable
  177. knight guitar amp conversion
  178. Dumb motor run capacitor question
  179. Coupling caps in ST35
  180. Mentmore M100
  181. How to match tubes?
  182. Transcendent OTL T8 Vs. Atma-Sphere M60
  183. New 12AX7A Pspice model
  184. What does R2D2, Mickey Mouse and a...
  185. Why 5V filament
  186. Alloys for filaments
  187. 6360 as Power Tube for SE amp
  188. Bridging Stereo Amps
  189. Problem with 6L6 Monoblock
  190. Gain
  191. Proper grounding method...
  192. Changing a tube amp...
  193. Houston Mini 2004 Pot question
  194. Diode Heatsink
  195. Looking for a PCB / kit for a bipolar tube rectified PSU
  196. compactron output stage and power supply
  197. Better sounding ECL86's
  198. Heathkit EA-3 conversion to guitar amp
  199. interesting amp & interesting problem
  200. Hybrid Tube / Mosfet Amplifier
  201. Again (sorry) what's the biggest 6V heater double rectifier?
  202. PP EL34 circuit wanted
  203. Need advice for transformer for tube GM 70.
  204. Pentode filter
  205. How to calculate for cathode follower
  206. 6L6WXT in a Dynaco ST-70
  207. tube preamp using submini tube
  208. SE Trafo for PP use
  209. WE91A Pentode Questions?
  210. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  211. looking for schematic; three EL84's in PSE ?
  212. Need work done on a dynaco power amp
  213. quick question on fixed bias
  214. DIY Tube Audio dealers in New Zealand
  215. ornec
  216. Tuner filament supply question
  217. An idea for a partial feedback pentode amp using 6AU6's and 807's
  218. Tube current regulation for series heaters' supply.
  219. Bogen PCA-1 two tube booster amp
  220. First time building a tube preamp
  221. B&K 700 problems?
  222. Silvertone 1482 Blowing Rectifier Tubes
  223. Voltage Multipliers
  224. Russian 6P14P tubes
  225. Where to get tube spec sheets, pinouts
  226. PCL 82 Hybrid 2SC5200/2SA1943
  227. CCS in Otput Tube Cathode - Does It Make Sense?
  228. My Guitar Tube Amp. Help needed with Mesa/Boogie pre
  229. My brew of the "Darling"
  230. Series connection of filaments
  231. noisy filament transformer
  232. Circuit diagram for Trilogy VTi.
  233. Got oddball tubes!
  234. A photo for my question
  235. Make a preamp with an already buil amplifier
  236. DN2540
  237. mods for almarro amp
  238. Filament Transformer
  239. Circuit indentification
  240. Simplest Tube Regulated PSU?
  241. High Voltage Insulator for Umbilical
  242. wiring diagram, instruction on the transformer S-265-Q
  243. help me get started
  244. 12AU7 instead of 6C4
  245. Fisher 600 questions
  246. Phase inverter
  247. srpp input stage
  248. Orientation of EL34 Tubes
  249. Load termination ?
  250. Advice on SE DHT for Lowther Fidelio DX2

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