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  1. PP bias balance pot
  2. Jolida JD 502A
  3. Cathode Bias for SimpleSE
  4. TRemPre malfunctioning
  5. HV benchtop power supply, help on opamp setup
  6. Transcendar Output Transformers ST70
  7. Unofficial Tube Market Survey
  8. testing 6DJ8s
  9. 6L6 AB PPP stage; does it make sense?
  10. 7868 tubes - replace with 6L6's?
  11. Vintage Amp...too much gain on CD
  12. ETF07 - Last possibility to join
  13. Tube 7403
  14. New SET: JE labs simple 45 or tubelab SE?
  15. Melos triode and computer as source: BUZZ BUZZ BUZZ
  16. 6SN7 Cascoded CCS
  17. 7591 se tube amp?
  18. Sovtek 5881WXT/Quad II
  19. Adding more capacitors to an AMP
  20. Tube Characteristics
  21. Tube guilt
  22. KT88 or 6550
  23. Single ended OTL Transcendent
  24. K-12 kit, buzz in R channel
  25. Hickok 752A repair
  26. my new tube line stage
  27. Audio Innovations Series 200 Phono Stage
  28. is it correct to calculate OTL?
  29. Late Halloween Cartoon
  30. on/off/on switch for bright/bold?
  31. Another CCS for tubes/valves: PCBs
  32. Customdaveus
  33. newbie questions on Bogen M330A repair
  34. crackling sound from one channel
  35. Cosmos Valve amplifier
  36. The Vacuum Tube Truth
  37. Inverted Triode SE OTL
  38. Negative feedback problems on ECL82 SE amp.
  39. Cheap tester?
  40. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  41. Fisher SA 1000
  42. Hot Hot Hot
  43. Dynaco PAS-4 manual
  44. amplifier pp with 6p3s
  45. rusty chassis - what to do?
  46. Use 9 pin Aikido PCB kit or buy 8 pin ?
  47. Where to find data sheets?
  48. how to reverse signal for Common Cathode circuit
  49. Audio note M2 power supply resistor value
  50. Are 6DZ7 to Rare to be fun?
  51. 7868 substitutes
  52. Millet Hybrid - stacked buffers
  53. Repairing an old tube raido
  54. 3 way ultimate DIY phonostage match!
  55. wanted sv572-3
  56. General Aikido power supply question
  57. question about beefing up my monoblocks
  58. multichannel tube amp
  59. Who can explain this FFT graph to me
  60. Equivalent Noise Resistance
  61. Any Tube heads near Central coast NSW
  62. Question
  63. Screen Supply For PP Amp
  64. Datasheets: RC coupled amp VS. typical characteristics
  65. How to calculate Tube Preamp output impedance?
  66. What vintage tube books do you own?
  67. re design of a SE tube amplifier
  68. NRI 70 tube chart
  69. Multimeter
  70. fizzy and unstable
  71. Russian spud amp
  72. Silly Question about 807
  73. Help with dared MP-15, please!
  74. tube tester B&k 606 Transformer brun need help
  75. Do tube curves tell most of the story?
  76. Sovtek 6B4-G
  77. Ultimate Amplifier
  78. How quiet is dead quiet?
  79. Max B+ for triode-connected KT88
  80. Acrosound Archive
  81. Hail to Vintage Power Transformer & Choke?
  82. 2a3 parafeed
  83. Kimmel mu stage
  84. 4043c
  85. Impedance quandary
  86. 6L6G Amp recommendations
  87. Beefing up the power supply
  88. System distortion and Single Ended Tube Amps
  89. TB3/1000 is alive ! ("European 833A")
  90. Another tube newb
  91. Decoding another recycled power trans
  92. parafeed plate choke calculation
  93. New to tube building / design - Input requested!
  94. tube preamp with hum??emf
  95. Which tubes for this OPT?
  96. Vacuum tube tester, do you own one?
  97. Ping salas re: LED baising
  98. Model train throttles?
  99. Microphonics that go away by themselves
  100. Variable cathode/plate resistors?
  101. 2 newbe questions
  102. 12B4A + LL1671 Linestage
  103. crate vintage "club 50" schematics needed
  104. Distortion Analysis using an Oscilloscope
  105. Western Electric 'Harmonic Equalizer'
  106. Tube Newb Mc Intosh questions.
  107. AH NJoe TJOEB, valve compatibility issue
  108. Tubes: test as New? translation please
  109. new s5 tube amp kit
  110. Stereo BusBar OK?
  111. Fi Primer 807
  112. Calculating power output in the design stage?
  113. Overdriving the grid of a triode
  114. Newb Questions RE: HS caps & B+ Bias
  115. mercury vapor... i love it!!!
  116. Interstage Couple 300B 811-3 SE amp
  117. PCB Trace Clearance for High Voltage
  118. youtube - tubes!
  119. Noob to the Leak ST20
  120. Unconditional stability, phase shift and feedback
  121. An almost DIY 6DJ8 Linestage
  122. Is Acrosound T-330 really good?
  123. My 1st amp just came to life......pics
  124. Russian tube power amp repair
  125. Unity coupled circuit amplifier.
  126. info about lectron JH50
  127. G.E. 6CA7/EL34 - any good?
  128. black face champ tubes
  129. SS Preamp and Tube Poweramp
  130. Values for OTL totem pole (cathode followers)
  131. 12au7 preamp will not work
  132. A Slew of Beginer Tube Questions
  133. calculating b+ voltage drop, decoupling?
  134. Another SET 2A3 in the world
  135. Help needed with Lectron JH 50 Amp
  136. Audio Note M2 regulator schematic
  137. 300b
  138. Three Simple Questions!!
  139. Edcor Transformers
  140. LTP with CCS - IM Distortion
  141. Strange 45 behaviour - help
  142. I have $250 to spend..what amp should I build?
  143. CCs plate load for mu follower 6sn7
  144. Best use of S-265 opt?
  145. what would be a reasonable price to pay for this tube ?
  146. Distortion Neutralizer for Odd Harmonics
  147. 6H13C preamp
  148. Testing tube for noise
  149. Optimal Umbilical Runs and Connections
  150. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  151. Film capacitors for decoupling
  152. Non-simultaneous Pentode anode/G2 turn-on
  153. ArnoldC's IT coupled 300B amplifier
  154. Ultralinear pse
  155. Using 0D3's for DC regulation in Aikido
  156. ECC40 preamp
  157. Newbie PS questions
  158. Preliminary 12AX7 guitar preamp
  159. Another cap replacement: uF changes..
  160. parallel EL84 transconductance amp
  161. Quad II Modified by Glenn Croft
  162. Wanted:Power transformers for Welborne DRD 300B amp
  163. Just finished testing my first 832A amp
  164. Russian Transformer cores
  165. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  166. 15E and plate curves
  167. Replacing 6N1P' s with 6922s or 7308s
  168. the "cheapo"
  169. OPT Quality Factors?
  170. 50CA10 pushpull amp
  171. New Hammonds?
  172. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  173. Voltage Gain Confusion!!
  174. is this ok to build???
  175. PSUD2 help needed
  176. It's raining 10M45's!
  177. Grid Leak Bias on small signal pentodes.
  178. Equalizing + & - output voltage?
  179. Help with ECF80 spice model
  180. Would a Williamson sound better with a CCS tail in the driver?
  181. low ac voltage question
  182. Aikido/SMPS/SKA SS
  183. values of ground(?) coupling caps in Aikido
  184. Please explain grid stoppers..
  185. Psud2 Help
  186. Appropriate Iron for 211 Triode SE
  187. does anyone know the resistance of a hammond 300bx transformer
  188. Help with Aikido B+ Bias layout
  189. 12v 6BF7 preamp design tested
  190. power supply PLEASE HELP
  191. power supply PLEASE HELP
  192. power supply PLEASE HELP
  193. tube amp
  194. 6AU8A, and assorted questions
  195. PPP OPT clarification
  196. ECC83/12AX7 Tube test query
  197. 0D3 shunt regulator for single ended duty
  198. where to buy parts (transformers and chokes)
  199. beefy choke -- please help
  200. 5W EL84 drive EL84 SE
  201. Calculate minimum load current of choke?
  202. Best Sounding Output Tube
  203. Best internal wiring for power
  204. Preamp with DHT
  205. bogen m60 and webster pa
  206. 6p13p schematic
  207. Buzzing Choke - Any Ideas?
  208. Floating A2 Bias
  209. Any SE project for 91db speaker?
  210. Hammond Mains Transformer - Center Tap Split
  211. TINA-TI Tube Simulation
  212. Fixed Bias v Ultrapath
  213. Traynor YBA200 6550 help!
  214. cathode follower asymmetric slew
  215. 6SN7 with transformer coupling
  216. 6AQ7 - why so cheap???
  217. Grommes 260
  218. heathkit aa-81 mono blocks
  219. feedbackless interstage p-p kt88 amp
  220. Using Horizontal Output Tubes - Power Supply
  221. 6e5c
  222. Mr Liang 845 Sound :(
  223. Test pentode grids without a tester
  224. Info required : GAMMA VALVE AMPS..
  225. 6SN7 plate voltage, current and lifespan
  226. Clarification of floating heater supply
  227. Changed a cap and lost some bass...?
  228. 6P9/6AG7 Triode Amplifier
  229. Chokes Designed for Choke Input PSU's
  230. Power trafo...
  231. Any value to modding a UL OPT to CFBK?
  232. One guitar, multiple amps at once?
  233. Rogers Cadet III Advice & Opinions Needed
  234. DCG5/5000GS Valve
  235. Morgan Jones on Google Books
  236. CCS for 12B4 linestage
  237. 6j9p
  238. philips hf 303 amp
  239. DIY tube testing Curve Tracer
  240. Amplifier impedance and pot selection
  241. Tube rise time and slew rate
  242. What's your favourite sounding DIY/kit tube amp?
  243. How to convert a 220v Chinese amp to 110v for US use
  244. look for schematic of 12v preamp ???
  245. Bevois Valley and parallel push pull
  246. Amp Wiring Color Code
  247. Xindak 805 monos $4700/pr USD
  248. A new DHT power supply idea
  249. 852 tube
  250. Tube Matcher help needed, ala PassDIY

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