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  1. schematic diagram golden tube se40 for repair! help
  2. Reliable B+ PSU for pro preamp
  3. Help me find some info please
  4. Some tube radios
  5. Electro Harmonix 300b...shorting problems?
  6. Aikido linestage tube choice? (again)
  7. Teeco 1220??
  8. magic smoke pilot aa903
  9. PP bias balance pot
  10. Jolida JD 502A
  11. Cathode Bias for SimpleSE
  12. TRemPre malfunctioning
  13. HV benchtop power supply, help on opamp setup
  14. Transcendar Output Transformers ST70
  15. Unofficial Tube Market Survey
  16. testing 6DJ8s
  17. 6L6 AB PPP stage; does it make sense?
  18. 7868 tubes - replace with 6L6's?
  19. Vintage Amp...too much gain on CD
  20. ETF07 - Last possibility to join
  21. Tube 7403
  22. New SET: JE labs simple 45 or tubelab SE?
  23. Melos triode and computer as source: BUZZ BUZZ BUZZ
  24. 6SN7 Cascoded CCS
  25. 7591 se tube amp?
  26. Sovtek 5881WXT/Quad II
  27. Adding more capacitors to an AMP
  28. Tube Characteristics
  29. Tube guilt
  30. KT88 or 6550
  31. Single ended OTL Transcendent
  32. K-12 kit, buzz in R channel
  33. Hickok 752A repair
  34. my new tube line stage
  35. Audio Innovations Series 200 Phono Stage
  36. is it correct to calculate OTL?
  37. Late Halloween Cartoon
  38. on/off/on switch for bright/bold?
  39. Another CCS for tubes/valves: PCBs
  40. Customdaveus
  41. newbie questions on Bogen M330A repair
  42. crackling sound from one channel
  43. Cosmos Valve amplifier
  44. The Vacuum Tube Truth
  45. Inverted Triode SE OTL
  46. Negative feedback problems on ECL82 SE amp.
  47. Cheap tester?
  48. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  49. Fisher SA 1000
  50. Hot Hot Hot
  51. Dynaco PAS-4 manual
  52. amplifier pp with 6p3s
  53. rusty chassis - what to do?
  54. Use 9 pin Aikido PCB kit or buy 8 pin ?
  55. Where to find data sheets?
  56. how to reverse signal for Common Cathode circuit
  57. Audio note M2 power supply resistor value
  58. Are 6DZ7 to Rare to be fun?
  59. 7868 substitutes
  60. Millet Hybrid - stacked buffers
  61. Repairing an old tube raido
  62. 3 way ultimate DIY phonostage match!
  63. wanted sv572-3
  64. General Aikido power supply question
  65. question about beefing up my monoblocks
  66. multichannel tube amp
  67. Who can explain this FFT graph to me
  68. Equivalent Noise Resistance
  69. Any Tube heads near Central coast NSW
  70. Question
  71. Screen Supply For PP Amp
  72. Datasheets: RC coupled amp VS. typical characteristics
  73. How to calculate Tube Preamp output impedance?
  74. What vintage tube books do you own?
  75. re design of a SE tube amplifier
  76. NRI 70 tube chart
  77. Multimeter
  78. fizzy and unstable
  79. Russian spud amp
  80. Silly Question about 807
  81. Help with dared MP-15, please!
  82. tube tester B&k 606 Transformer brun need help
  83. Do tube curves tell most of the story?
  84. Sovtek 6B4-G
  85. Ultimate Amplifier
  86. How quiet is dead quiet?
  87. Max B+ for triode-connected KT88
  88. Acrosound Archive
  89. Hail to Vintage Power Transformer & Choke?
  90. 2a3 parafeed
  91. Kimmel mu stage
  92. 4043c
  93. Impedance quandary
  94. 6L6G Amp recommendations
  95. Beefing up the power supply
  96. System distortion and Single Ended Tube Amps
  97. TB3/1000 is alive ! ("European 833A")
  98. Another tube newb
  99. Decoding another recycled power trans
  100. parafeed plate choke calculation
  101. New to tube building / design - Input requested!
  102. tube preamp with hum??emf
  103. Which tubes for this OPT?
  104. Vacuum tube tester, do you own one?
  105. Ping salas re: LED baising
  106. Model train throttles?
  107. Microphonics that go away by themselves
  108. Variable cathode/plate resistors?
  109. 2 newbe questions
  110. 12B4A + LL1671 Linestage
  111. crate vintage "club 50" schematics needed
  112. Distortion Analysis using an Oscilloscope
  113. Western Electric 'Harmonic Equalizer'
  114. Tube Newb Mc Intosh questions.
  115. AH NJoe TJOEB, valve compatibility issue
  116. Tubes: test as New? translation please
  117. new s5 tube amp kit
  118. Stereo BusBar OK?
  119. Fi Primer 807
  120. Calculating power output in the design stage?
  121. Overdriving the grid of a triode
  122. Newb Questions RE: HS caps & B+ Bias
  123. mercury vapor... i love it!!!
  124. Interstage Couple 300B 811-3 SE amp
  125. PCB Trace Clearance for High Voltage
  126. youtube - tubes!
  127. Noob to the Leak ST20
  128. Unconditional stability, phase shift and feedback
  129. An almost DIY 6DJ8 Linestage
  130. Is Acrosound T-330 really good?
  131. My 1st amp just came to life......pics
  132. Russian tube power amp repair
  133. Unity coupled circuit amplifier.
  134. info about lectron JH50
  135. G.E. 6CA7/EL34 - any good?
  136. black face champ tubes
  137. SS Preamp and Tube Poweramp
  138. Values for OTL totem pole (cathode followers)
  139. 12au7 preamp will not work
  140. A Slew of Beginer Tube Questions
  141. calculating b+ voltage drop, decoupling?
  142. Another SET 2A3 in the world
  143. Help needed with Lectron JH 50 Amp
  144. Audio Note M2 regulator schematic
  145. 300b
  146. Three Simple Questions!!
  147. Edcor Transformers
  148. LTP with CCS - IM Distortion
  149. Strange 45 behaviour - help
  150. I have $250 to spend..what amp should I build?
  151. CCs plate load for mu follower 6sn7
  152. Best use of S-265 opt?
  153. what would be a reasonable price to pay for this tube ?
  154. Distortion Neutralizer for Odd Harmonics
  155. 6H13C preamp
  156. Testing tube for noise
  157. Optimal Umbilical Runs and Connections
  158. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  159. Film capacitors for decoupling
  160. Non-simultaneous Pentode anode/G2 turn-on
  161. ArnoldC's IT coupled 300B amplifier
  162. Ultralinear pse
  163. Using 0D3's for DC regulation in Aikido
  164. ECC40 preamp
  165. Newbie PS questions
  166. Preliminary 12AX7 guitar preamp
  167. Another cap replacement: uF changes..
  168. parallel EL84 transconductance amp
  169. Quad II Modified by Glenn Croft
  170. Wanted:Power transformers for Welborne DRD 300B amp
  171. Just finished testing my first 832A amp
  172. Russian Transformer cores
  173. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  174. 15E and plate curves
  175. Replacing 6N1P' s with 6922s or 7308s
  176. the "cheapo"
  177. OPT Quality Factors?
  178. 50CA10 pushpull amp
  179. New Hammonds?
  180. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  181. Voltage Gain Confusion!!
  182. is this ok to build???
  183. PSUD2 help needed
  184. It's raining 10M45's!
  185. Grid Leak Bias on small signal pentodes.
  186. Equalizing + & - output voltage?
  187. Help with ECF80 spice model
  188. Would a Williamson sound better with a CCS tail in the driver?
  189. low ac voltage question
  190. Aikido/SMPS/SKA SS
  191. values of ground(?) coupling caps in Aikido
  192. Please explain grid stoppers..
  193. Psud2 Help
  194. Appropriate Iron for 211 Triode SE
  195. does anyone know the resistance of a hammond 300bx transformer
  196. Help with Aikido B+ Bias layout
  197. 12v 6BF7 preamp design tested
  198. power supply PLEASE HELP
  199. power supply PLEASE HELP
  200. power supply PLEASE HELP
  201. tube amp
  202. 6AU8A, and assorted questions
  203. PPP OPT clarification
  204. ECC83/12AX7 Tube test query
  205. 0D3 shunt regulator for single ended duty
  206. where to buy parts (transformers and chokes)
  207. beefy choke -- please help
  208. 5W EL84 drive EL84 SE
  209. Calculate minimum load current of choke?
  210. Best Sounding Output Tube
  211. Best internal wiring for power
  212. Preamp with DHT
  213. bogen m60 and webster pa
  214. 6p13p schematic
  215. Buzzing Choke - Any Ideas?
  216. Floating A2 Bias
  217. Any SE project for 91db speaker?
  218. Hammond Mains Transformer - Center Tap Split
  219. TINA-TI Tube Simulation
  220. Fixed Bias v Ultrapath
  221. Traynor YBA200 6550 help!
  222. cathode follower asymmetric slew
  223. 6SN7 with transformer coupling
  224. 6AQ7 - why so cheap???
  225. Grommes 260
  226. heathkit aa-81 mono blocks
  227. feedbackless interstage p-p kt88 amp
  228. Using Horizontal Output Tubes - Power Supply
  229. 6e5c
  230. Mr Liang 845 Sound :(
  231. Test pentode grids without a tester
  232. Info required : GAMMA VALVE AMPS..
  233. 6SN7 plate voltage, current and lifespan
  234. Clarification of floating heater supply
  235. Changed a cap and lost some bass...?
  236. 6P9/6AG7 Triode Amplifier
  237. Chokes Designed for Choke Input PSU's
  238. Power trafo...
  239. Any value to modding a UL OPT to CFBK?
  240. One guitar, multiple amps at once?
  241. Rogers Cadet III Advice & Opinions Needed
  242. DCG5/5000GS Valve
  243. Morgan Jones on Google Books
  244. CCS for 12B4 linestage
  245. 6j9p
  246. philips hf 303 amp
  247. DIY tube testing Curve Tracer
  248. Amplifier impedance and pot selection
  249. Tube rise time and slew rate
  250. What's your favourite sounding DIY/kit tube amp?

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