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

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