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  1. S-5 electronics amp kits
  2. up-to-date El Cheapo schematic
  3. unknown output trannie
  4. Help needed with KT88 Amp design
  5. Bogen MX60a
  6. AIKIDO - Low-volage with buffer version
  7. 6N6P cascode calculation
  8. 866a Min operating voltages
  9. new 6V6 amp
  10. Tube-based CCS- 0.2uF cap OK?
  11. DHT filament PSU: What would you do?
  12. PSU problem
  13. 811A se amp using a solid state driver
  14. ECC83 - Long Plate vs Short Plate
  15. Tube Matching
  16. Cascoded mu-follower
  17. DIY speaker choice for SE
  18. Output transformer wanted
  19. Tube Tester
  20. 835 amp
  21. One 300B filament supply for stereo?
  22. Aikido Built At Last!!
  23. Question about amount of feedback to apply
  24. design help needed.
  25. LED in cathode
  26. Need help for Eico 1030 regulated power supply
  27. zinc chassis
  28. Anode Cap Question
  29. what pins to use solid rectifier for 5Y3
  30. New PSU for Aikido?
  31. tube anti-vibration mounting
  32. Border Patrol PSU, can anyone help?
  33. Aikido Line Stage
  34. LED Bias Modifications
  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. 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. Voltage Multipliers
  200. Russian 6P14P tubes
  201. Where to get tube spec sheets, pinouts
  202. PCL 82 Hybrid 2SC5200/2SA1943
  203. CCS in Otput Tube Cathode - Does It Make Sense?
  204. My brew of the "Darling"
  205. Series connection of filaments
  206. noisy filament transformer
  207. Circuit diagram for Trilogy VTi.
  208. Got oddball tubes!
  209. A photo for my question
  210. Make a preamp with an already buil amplifier
  211. DN2540
  212. mods for almarro amp
  213. Filament Transformer
  214. Circuit indentification
  215. Simplest Tube Regulated PSU?
  216. High Voltage Insulator for Umbilical
  217. wiring diagram, instruction on the transformer S-265-Q
  218. help me get started
  219. 12AU7 instead of 6C4
  220. Fisher 600 questions
  221. Phase inverter
  222. srpp input stage
  223. Orientation of EL34 Tubes
  224. Load termination ?
  225. Advice on SE DHT for Lowther Fidelio DX2
  226. Dynacord MV46 as a compressor
  227. Biggest dual triode output tube?
  228. OPT impedance question
  229. Partridge SE O/P transformers
  230. SimpleSE and me
  231. SRPP decoupling cap vs. output transformer
  232. Differences between 6SN7GTA and 6SN7GTB?
  233. Radford STA-15 questions
  234. Balanced Input Hookup
  235. Need Tube Testing Settings for 3 tubes
  236. Need helping in Grounded Grid preamp using 6H6P 6H30P
  237. Regulated Lab DC power supply
  238. Fixed Bias 6BQ5?
  239. Heathkit AG7 Audio Geneator
  240. Music Angel vs Mr Liang L1-L3? And best speakers for 3k budget?
  241. NEWBIE question SET vs. Solid State
  242. 6N6P cascode + 6AS7 Cathode follower
  243. Help me calculator OPT for 807, 6C4C tubes.
  244. Now I have caught the bug - next project
  245. 20W cathode follower amplifier
  246. Muting line level signals
  247. Anywhere in Hong Kong...
  248. RIAA / Pre mod/upgrade
  249. IT WORKS! Tube Phono Stage
  250. 2033 info sought

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