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  1. unknown output trannie
  2. Help needed with KT88 Amp design
  3. Bogen MX60a
  4. AIKIDO - Low-volage with buffer version
  5. 6N6P cascode calculation
  6. 866a Min operating voltages
  7. new 6V6 amp
  8. Tube-based CCS- 0.2uF cap OK?
  9. DHT filament PSU: What would you do?
  10. PSU problem
  11. 811A se amp using a solid state driver
  12. ECC83 - Long Plate vs Short Plate
  13. Tube Matching
  14. Cascoded mu-follower
  15. DIY speaker choice for SE
  16. Output transformer wanted
  17. big valve traffo for guitar amp?
  18. Tube Tester
  19. 835 amp
  20. One 300B filament supply for stereo?
  21. Aikido Built At Last!!
  22. Question about amount of feedback to apply
  23. design help needed.
  24. LED in cathode
  25. Need help for Eico 1030 regulated power supply
  26. zinc chassis
  27. Anode Cap Question
  28. what pins to use solid rectifier for 5Y3
  29. New PSU for Aikido?
  30. tube anti-vibration mounting
  31. Border Patrol PSU, can anyone help?
  32. Aikido Line Stage
  33. LED Bias Modifications
  34. danelectro vibravox
  35. Standby switch for bridge rectified power supplies.
  36. Decoupling in Phono stages.
  37. easy one valve pre help
  38. Single-ended-series amp with a "1 winding" transformer
  39. Complementary Symmetry Output
  40. Help getting these d$&* Dynascan probes apart!
  41. Aikido output cap selector switch
  42. adding an "on" lamp to amp kit
  43. Why does 6BM8 have so high max plate voltage?
  44. B+ soft start
  45. Unison research
  46. photos of my creations
  47. First Time Project - Finished! Photos Attached
  48. Design parameters for SE OPTs'
  49. want to build a pentode driven drd 2a3!
  50. Passive Magnetic Preamp!
  51. Testing an E288CC (8223)
  52. Need expert help on presence control
  53. Value of output caps for Aikido - how low is too low?
  54. Very expensive WE106A pre-amp, any member had this??
  55. B+ with or without tubes?
  56. 1st Time Project - Spot the howler
  57. Tube flashes on tester... Bad ?
  58. Amp advice needed for a poor DIY er...
  59. DCR of primaries and secondaries of Hammond Transformer
  60. 801 amp with Power Drive
  61. Where did this come from?
  62. 6N7S's PPP Class A
  63. your opinion needed.......
  64. ST-70 strangeness
  65. SS preamp w/ tube amp
  66. pri. impedance vs. sek. impedance
  67. TubeLab SimpleSe and speaker efficiency
  68. Question about speaker transformer
  69. How to read Russian Date Codes
  70. 300B Amp on ebay
  71. Would a 396A or 2C51 drive a 45?
  72. PSUD2 Q on regulator
  73. My last design
  74. OPT for 250th Se A2
  75. Silvertone 1481 power transformer?
  76. 829B, 3E29, QQV03-20 Connector
  77. Measuring from UK schematic but on US mains
  78. strange tube
  79. cathode resistor ?? in p-p fixed bias
  80. Need Help please . Headphones into line up of tube amp .
  81. 5Z4 inrush current too high
  82. Reducing gain on Audible Illusions M3A
  83. Decoding output transformers: strange SE's
  84. cheap and usable for 1K p-p iron?
  85. Help! Phono stage LF instability
  86. Help! Mesa Stiletto is motorboating and then fuse blows
  87. Faulty tube?
  88. Philbrick opamp bases
  89. Hammond Driver transformers
  90. 6n7/2a3
  91. Flea power for cheap OPT's?
  92. 1st Project - Half time report
  93. Claus Byrith 4-30 Questions
  94. quicksilver 8417 biasing
  95. 6sl7
  96. Trying to identify/find documentation on a 50EH5 amp
  97. Basic tests and measurements for OPTs
  98. 6SN7GT SRSE Linestage
  99. Dynaco Mark III
  100. Push Pull 300B preliminary
  101. triode thermodynamic model
  102. My first post!
  103. A Neophyte's 12B4 Build Thread
  104. Webster Hammond Model "G" amplifier
  105. Matching tubes- WE 396a/RFT EL34
  106. What is the most powerful AF tube amp ever built?
  107. SOHA Amp & PSU Layout, need feedback
  108. smoke came from transformer
  109. Startup Cost?
  110. Old or new output transformer?
  111. speaker magnet proximity Question
  112. Russian L3-3 tube tester
  113. I made a web page on building triode models /w CurveCaptor
  114. Boosted Triode mode?
  115. Unbalacing a PP output transformer?
  116. ecl86 & ez80 - suitable for guitar amp?
  117. Double C Cores
  118. Aikido Power Supply
  119. Output Noise question
  120. Power Supply Ringing
  121. Compare Sowter SA08 with Plitron 3035SE for 300B
  122. My 6C33C SING WITH No SPEAKER !
  123. MOSFET Driver for Power Pentodes
  124. Floating heater supplies
  125. Altec Amplifiers
  126. What causes the overrun bias on V4?
  127. sound comparison of Class A1 vs A2 amps
  128. 12AU7 substituted for a 6922
  129. Whats the worst that could happen?
  130. Ferranti transformers
  131. PC Cooling Fans for Tube Amps
  132. 845 circuit suggestions
  133. DIY Sofia tube tester?
  134. transformer hum / buzz getting into B+?
  135. Safe Transformerless Amps Possible?
  136. GM70 Lower Voltage PP Question
  137. phonostage with 150VDC B+
  138. Spuddo more powerfull
  139. Larry Moore 300B/10Y/6SN7GT
  140. Foreplay Preamp volume popping
  141. Altec Tube Amplifiers
  142. Circuit review
  143. DIY Tube Tester for 6336s
  144. 12dw7 to 12ax7 conversion?
  145. 26 preamp
  146. Etf07
  147. 1st Project Heater Wiring
  148. Dropped tube
  149. Great bench supply for tube work.
  150. Mullard px25 - need matched pair
  151. 2W carbon composit ressy
  152. popping noise through 1 channel on Radford STA15
  153. Point to point wiring help
  154. 1st Time Project - Report 2 + advice sought
  155. "Simple" 2A3
  156. vinyl v cd differences - phono pre and cd-player
  157. Shielded input cable
  158. knight guitar amp conversion
  159. Dumb motor run capacitor question
  160. Coupling caps in ST35
  161. Mentmore M100
  162. How to match tubes?
  163. Transcendent OTL T8 Vs. Atma-Sphere M60
  164. New 12AX7A Pspice model
  165. What does R2D2, Mickey Mouse and a...
  166. Why 5V filament
  167. Alloys for filaments
  168. 6360 as Power Tube for SE amp
  169. Bridging Stereo Amps
  170. Problem with 6L6 Monoblock
  171. Gain
  172. Proper grounding method...
  173. Changing a tube amp...
  174. Houston Mini 2004 Pot question
  175. Diode Heatsink
  176. Looking for a PCB / kit for a bipolar tube rectified PSU
  177. compactron output stage and power supply
  178. Better sounding ECL86's
  179. Heathkit EA-3 conversion to guitar amp
  180. interesting amp & interesting problem
  181. Hybrid Tube / Mosfet Amplifier
  182. Again (sorry) what's the biggest 6V heater double rectifier?
  183. PP EL34 circuit wanted
  184. Need advice for transformer for tube GM 70.
  185. Pentode filter
  186. How to calculate for cathode follower
  187. 6L6WXT in a Dynaco ST-70
  188. tube preamp using submini tube
  189. SE Trafo for PP use
  190. WE91A Pentode Questions?
  191. Lower voltage Dynaco ST35 for 6P14P // 7247 replacement
  192. looking for schematic; three EL84's in PSE ?
  193. Need work done on a dynaco power amp
  194. quick question on fixed bias
  195. DIY Tube Audio dealers in New Zealand
  196. ornec
  197. Tuner filament supply question
  198. An idea for a partial feedback pentode amp using 6AU6's and 807's
  199. Tube current regulation for series heaters' supply.
  200. Bogen PCA-1 two tube booster amp
  201. First time building a tube preamp
  202. B&K 700 problems?
  203. Silvertone 1482 Blowing Rectifier Tubes
  204. Voltage Multipliers
  205. Russian 6P14P tubes
  206. Where to get tube spec sheets, pinouts
  207. PCL 82 Hybrid 2SC5200/2SA1943
  208. CCS in Otput Tube Cathode - Does It Make Sense?
  209. My Guitar Tube Amp. Help needed with Mesa/Boogie pre
  210. My brew of the "Darling"
  211. Series connection of filaments
  212. noisy filament transformer
  213. Circuit diagram for Trilogy VTi.
  214. Got oddball tubes!
  215. A photo for my question
  216. Make a preamp with an already buil amplifier
  217. DN2540
  218. mods for almarro amp
  219. Filament Transformer
  220. Circuit indentification
  221. Simplest Tube Regulated PSU?
  222. High Voltage Insulator for Umbilical
  223. wiring diagram, instruction on the transformer S-265-Q
  224. help me get started
  225. 12AU7 instead of 6C4
  226. Fisher 600 questions
  227. Phase inverter
  228. srpp input stage
  229. Orientation of EL34 Tubes
  230. Load termination ?
  231. Advice on SE DHT for Lowther Fidelio DX2
  232. Dynacord MV46 as a compressor
  233. Biggest dual triode output tube?
  234. OPT impedance question
  235. Partridge SE O/P transformers
  236. SimpleSE and me
  237. SRPP decoupling cap vs. output transformer
  238. Differences between 6SN7GTA and 6SN7GTB?
  239. Radford STA-15 questions
  240. Balanced Input Hookup
  241. Need Tube Testing Settings for 3 tubes
  242. Need helping in Grounded Grid preamp using 6H6P 6H30P
  243. Regulated Lab DC power supply
  244. Fixed Bias 6BQ5?
  245. Heathkit AG7 Audio Geneator
  246. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  247. NEWBIE question SET vs. Solid State
  248. 6N6P cascode + 6AS7 Cathode follower
  249. Help me calculator OPT for 807, 6C4C tubes.
  250. Now I have caught the bug - next project

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