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  1. ETF07 - Last possibility to join
  2. Tube 7403
  3. New SET: JE labs simple 45 or tubelab SE?
  4. Melos triode and computer as source: BUZZ BUZZ BUZZ
  5. 6SN7 Cascoded CCS
  6. 7591 se tube amp?
  7. Sovtek 5881WXT/Quad II
  8. Adding more capacitors to an AMP
  9. Tube Characteristics
  10. Tube guilt
  11. KT88 or 6550
  12. Single ended OTL Transcendent
  13. K-12 kit, buzz in R channel
  14. Hickok 752A repair
  15. my new tube line stage
  16. Audio Innovations Series 200 Phono Stage
  17. is it correct to calculate OTL?
  18. Late Halloween Cartoon
  19. on/off/on switch for bright/bold?
  20. Another CCS for tubes/valves: PCBs
  21. Customdaveus
  22. newbie questions on Bogen M330A repair
  23. crackling sound from one channel
  24. Cosmos Valve amplifier
  25. The Vacuum Tube Truth
  26. Inverted Triode SE OTL
  27. Negative feedback problems on ECL82 SE amp.
  28. Cheap tester?
  29. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  30. Fisher SA 1000
  31. Hot Hot Hot
  32. Dynaco PAS-4 manual
  33. amplifier pp with 6p3s
  34. rusty chassis - what to do?
  35. Use 9 pin Aikido PCB kit or buy 8 pin ?
  36. Where to find data sheets?
  37. how to reverse signal for Common Cathode circuit
  38. Audio note M2 power supply resistor value
  39. Are 6DZ7 to Rare to be fun?
  40. 7868 substitutes
  41. Millet Hybrid - stacked buffers
  42. Repairing an old tube raido
  43. 3 way ultimate DIY phonostage match!
  44. wanted sv572-3
  45. General Aikido power supply question
  46. question about beefing up my monoblocks
  47. multichannel tube amp
  48. Who can explain this FFT graph to me
  49. Equivalent Noise Resistance
  50. Any Tube heads near Central coast NSW
  51. Question
  52. Screen Supply For PP Amp
  53. Datasheets: RC coupled amp VS. typical characteristics
  54. How to calculate Tube Preamp output impedance?
  55. What vintage tube books do you own?
  56. re design of a SE tube amplifier
  57. NRI 70 tube chart
  58. Multimeter
  59. fizzy and unstable
  60. Russian spud amp
  61. Silly Question about 807
  62. Help with dared MP-15, please!
  63. tube tester B&k 606 Transformer brun need help
  64. Do tube curves tell most of the story?
  65. Sovtek 6B4-G
  66. Ultimate Amplifier
  67. How quiet is dead quiet?
  68. Max B+ for triode-connected KT88
  69. Acrosound Archive
  70. Hail to Vintage Power Transformer & Choke?
  71. 2a3 parafeed
  72. Kimmel mu stage
  73. 4043c
  74. Impedance quandary
  75. 6L6G Amp recommendations
  76. Beefing up the power supply
  77. System distortion and Single Ended Tube Amps
  78. TB3/1000 is alive ! ("European 833A")
  79. Another tube newb
  80. Decoding another recycled power trans
  81. parafeed plate choke calculation
  82. New to tube building / design - Input requested!
  83. tube preamp with hum??emf
  84. Which tubes for this OPT?
  85. Vacuum tube tester, do you own one?
  86. Ping salas re: LED baising
  87. Model train throttles?
  88. Microphonics that go away by themselves
  89. Variable cathode/plate resistors?
  90. 2 newbe questions
  91. 12B4A + LL1671 Linestage
  92. crate vintage "club 50" schematics needed
  93. Distortion Analysis using an Oscilloscope
  94. Western Electric 'Harmonic Equalizer'
  95. Tube Newb Mc Intosh questions.
  96. AH NJoe TJOEB, valve compatibility issue
  97. Tubes: test as New? translation please
  98. new s5 tube amp kit
  99. Stereo BusBar OK?
  100. Fi Primer 807
  101. Calculating power output in the design stage?
  102. Overdriving the grid of a triode
  103. Newb Questions RE: HS caps & B+ Bias
  104. mercury vapor... i love it!!!
  105. Interstage Couple 300B 811-3 SE amp
  106. PCB Trace Clearance for High Voltage
  107. youtube - tubes!
  108. Noob to the Leak ST20
  109. Unconditional stability, phase shift and feedback
  110. An almost DIY 6DJ8 Linestage
  111. Is Acrosound T-330 really good?
  112. My 1st amp just came to life......pics
  113. Russian tube power amp repair
  114. Unity coupled circuit amplifier.
  115. info about lectron JH50
  116. G.E. 6CA7/EL34 - any good?
  117. black face champ tubes
  118. SS Preamp and Tube Poweramp
  119. Values for OTL totem pole (cathode followers)
  120. 12au7 preamp will not work
  121. A Slew of Beginer Tube Questions
  122. calculating b+ voltage drop, decoupling?
  123. Another SET 2A3 in the world
  124. Help needed with Lectron JH 50 Amp
  125. Audio Note M2 regulator schematic
  126. 300b
  127. Three Simple Questions!!
  128. Edcor Transformers
  129. LTP with CCS - IM Distortion
  130. Tubeman I tubes and pots
  131. Strange 45 behaviour - help
  132. I have $250 to spend..what amp should I build?
  133. CCs plate load for mu follower 6sn7
  134. Best use of S-265 opt?
  135. what would be a reasonable price to pay for this tube ?
  136. Distortion Neutralizer for Odd Harmonics
  137. 6H13C preamp
  138. Testing tube for noise
  139. Optimal Umbilical Runs and Connections
  140. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  141. Film capacitors for decoupling
  142. Non-simultaneous Pentode anode/G2 turn-on
  143. ArnoldC's IT coupled 300B amplifier
  144. Ultralinear pse
  145. Using 0D3's for DC regulation in Aikido
  146. ECC40 preamp
  147. Newbie PS questions
  148. Preliminary 12AX7 guitar preamp
  149. Another cap replacement: uF changes..
  150. parallel EL84 transconductance amp
  151. Quad II Modified by Glenn Croft
  152. Wanted:Power transformers for Welborne DRD 300B amp
  153. Just finished testing my first 832A amp
  154. Russian Transformer cores
  155. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  156. 15E and plate curves
  157. Replacing 6N1P' s with 6922s or 7308s
  158. the "cheapo"
  159. OPT Quality Factors?
  160. 50CA10 pushpull amp
  161. New Hammonds?
  162. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  163. Voltage Gain Confusion!!
  164. is this ok to build???
  165. PSUD2 help needed
  166. It's raining 10M45's!
  167. Grid Leak Bias on small signal pentodes.
  168. Equalizing + & - output voltage?
  169. Help with ECF80 spice model
  170. Would a Williamson sound better with a CCS tail in the driver?
  171. low ac voltage question
  172. Aikido/SMPS/SKA SS
  173. values of ground(?) coupling caps in Aikido
  174. Please explain grid stoppers..
  175. Psud2 Help
  176. Appropriate Iron for 211 Triode SE
  177. does anyone know the resistance of a hammond 300bx transformer
  178. Help with Aikido B+ Bias layout
  179. 12v 6BF7 preamp design tested
  180. power supply PLEASE HELP
  181. power supply PLEASE HELP
  182. power supply PLEASE HELP
  183. tube amp
  184. 6AU8A, and assorted questions
  185. PPP OPT clarification
  186. ECC83/12AX7 Tube test query
  187. 0D3 shunt regulator for single ended duty
  188. where to buy parts (transformers and chokes)
  189. beefy choke -- please help
  190. 5W EL84 drive EL84 SE
  191. Calculate minimum load current of choke?
  192. Best Sounding Output Tube
  193. Best internal wiring for power
  194. Preamp with DHT
  195. bogen m60 and webster pa
  196. 6p13p schematic
  197. Buzzing Choke - Any Ideas?
  198. Floating A2 Bias
  199. Any SE project for 91db speaker?
  200. Hammond Mains Transformer - Center Tap Split
  201. TINA-TI Tube Simulation
  202. Fixed Bias v Ultrapath
  203. Traynor YBA200 6550 help!
  204. cathode follower asymmetric slew
  205. 6SN7 with transformer coupling
  206. 6AQ7 - why so cheap???
  207. Grommes 260
  208. heathkit aa-81 mono blocks
  209. feedbackless interstage p-p kt88 amp
  210. Using Horizontal Output Tubes - Power Supply
  211. 6e5c
  212. Mr Liang 845 Sound :(
  213. Test pentode grids without a tester
  214. Info required : GAMMA VALVE AMPS..
  215. 6SN7 plate voltage, current and lifespan
  216. Clarification of floating heater supply
  217. Changed a cap and lost some bass...?
  218. 6P9/6AG7 Triode Amplifier
  219. Chokes Designed for Choke Input PSU's
  220. Power trafo...
  221. Any value to modding a UL OPT to CFBK?
  222. One guitar, multiple amps at once?
  223. Rogers Cadet III Advice & Opinions Needed
  224. DCG5/5000GS Valve
  225. Morgan Jones on Google Books
  226. CCS for 12B4 linestage
  227. 6j9p
  228. philips hf 303 amp
  229. DIY tube testing Curve Tracer
  230. Amplifier impedance and pot selection
  231. Tube rise time and slew rate
  232. What's your favourite sounding DIY/kit tube amp?
  233. How to convert a 220v Chinese amp to 110v for US use
  234. look for schematic of 12v preamp ???
  235. Bevois Valley and parallel push pull
  236. Amp Wiring Color Code
  237. Xindak 805 monos $4700/pr USD
  238. A new DHT power supply idea
  239. 852 tube
  240. Tube Matcher help needed, ala PassDIY
  241. What's the difference?
  242. Cathode Feedback How-To?
  243. Is Thier Away To Clear Up Distortion???
  244. How much feedback for PP penthode?
  245. To regulate or not to regulate
  246. Anyone used interstage transformers for a 300B?
  247. Hissing Sound in KT88 Amp
  248. Go black or go around?
  249. Triodes that would like a 10K a-a OPT?
  250. Yaqin mc10L