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  1. Tube guilt
  2. KT88 or 6550
  3. Single ended OTL Transcendent
  4. K-12 kit, buzz in R channel
  5. my new tube line stage
  6. Audio Innovations Series 200 Phono Stage
  7. is it correct to calculate OTL?
  8. Late Halloween Cartoon
  9. on/off/on switch for bright/bold?
  10. Another CCS for tubes/valves: PCBs
  11. Customdaveus
  12. newbie questions on Bogen M330A repair
  13. crackling sound from one channel
  14. Cosmos Valve amplifier
  15. The Vacuum Tube Truth
  16. Inverted Triode SE OTL
  17. Negative feedback problems on ECL82 SE amp.
  18. Cheap tester?
  19. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  20. Fisher SA 1000
  21. Hot Hot Hot
  22. Dynaco PAS-4 manual
  23. amplifier pp with 6p3s
  24. rusty chassis - what to do?
  25. Use 9 pin Aikido PCB kit or buy 8 pin ?
  26. Where to find data sheets?
  27. how to reverse signal for Common Cathode circuit
  28. Audio note M2 power supply resistor value
  29. Are 6DZ7 to Rare to be fun?
  30. 7868 substitutes
  31. Millet Hybrid - stacked buffers
  32. Repairing an old tube raido
  33. 3 way ultimate DIY phonostage match!
  34. wanted sv572-3
  35. General Aikido power supply question
  36. question about beefing up my monoblocks
  37. multichannel tube amp
  38. Who can explain this FFT graph to me
  39. Equivalent Noise Resistance
  40. Any Tube heads near Central coast NSW
  41. Question
  42. Screen Supply For PP Amp
  43. Datasheets: RC coupled amp VS. typical characteristics
  44. How to calculate Tube Preamp output impedance?
  45. What vintage tube books do you own?
  46. re design of a SE tube amplifier
  47. NRI 70 tube chart
  48. Multimeter
  49. fizzy and unstable
  50. Russian spud amp
  51. Silly Question about 807
  52. Help with dared MP-15, please!
  53. Do tube curves tell most of the story?
  54. Sovtek 6B4-G
  55. Ultimate Amplifier
  56. How quiet is dead quiet?
  57. Max B+ for triode-connected KT88
  58. Acrosound Archive
  59. Hail to Vintage Power Transformer & Choke?
  60. 2a3 parafeed
  61. Kimmel mu stage
  62. 4043c
  63. Impedance quandary
  64. 6L6G Amp recommendations
  65. Beefing up the power supply
  66. System distortion and Single Ended Tube Amps
  67. TB3/1000 is alive ! ("European 833A")
  68. Another tube newb
  69. Decoding another recycled power trans
  70. parafeed plate choke calculation
  71. New to tube building / design - Input requested!
  72. tube preamp with hum??emf
  73. Which tubes for this OPT?
  74. Ping salas re: LED baising
  75. Model train throttles?
  76. Microphonics that go away by themselves
  77. Variable cathode/plate resistors?
  78. 2 newbe questions
  79. 12B4A + LL1671 Linestage
  80. Distortion Analysis using an Oscilloscope
  81. Western Electric 'Harmonic Equalizer'
  82. Tube Newb Mc Intosh questions.
  83. AH NJoe TJOEB, valve compatibility issue
  84. Tubes: test as New? translation please
  85. new s5 tube amp kit
  86. Stereo BusBar OK?
  87. Fi Primer 807
  88. Calculating power output in the design stage?
  89. Overdriving the grid of a triode
  90. Newb Questions RE: HS caps & B+ Bias
  91. mercury vapor... i love it!!!
  92. Interstage Couple 300B 811-3 SE amp
  93. PCB Trace Clearance for High Voltage
  94. youtube - tubes!
  95. Noob to the Leak ST20
  96. Unconditional stability, phase shift and feedback
  97. An almost DIY 6DJ8 Linestage
  98. Is Acrosound T-330 really good?
  99. My 1st amp just came to life......pics
  100. Russian tube power amp repair
  101. Unity coupled circuit amplifier.
  102. info about lectron JH50
  103. G.E. 6CA7/EL34 - any good?
  104. SS Preamp and Tube Poweramp
  105. Values for OTL totem pole (cathode followers)
  106. 12au7 preamp will not work
  107. A Slew of Beginer Tube Questions
  108. calculating b+ voltage drop, decoupling?
  109. Another SET 2A3 in the world
  110. Help needed with Lectron JH 50 Amp
  111. Audio Note M2 regulator schematic
  112. 300b
  113. Three Simple Questions!!
  114. Edcor Transformers
  115. LTP with CCS - IM Distortion
  116. Strange 45 behaviour - help
  117. I have $250 to spend..what amp should I build?
  118. CCs plate load for mu follower 6sn7
  119. Best use of S-265 opt?
  120. what would be a reasonable price to pay for this tube ?
  121. Distortion Neutralizer for Odd Harmonics
  122. 6H13C preamp
  123. Testing tube for noise
  124. Optimal Umbilical Runs and Connections
  125. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  126. Film capacitors for decoupling
  127. Non-simultaneous Pentode anode/G2 turn-on
  128. ArnoldC's IT coupled 300B amplifier
  129. Ultralinear pse
  130. Using 0D3's for DC regulation in Aikido
  131. ECC40 preamp
  132. Newbie PS questions
  133. Another cap replacement: uF changes..
  134. parallel EL84 transconductance amp
  135. Quad II Modified by Glenn Croft
  136. Wanted:Power transformers for Welborne DRD 300B amp
  137. Just finished testing my first 832A amp
  138. Russian Transformer cores
  139. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  140. 15E and plate curves
  141. Replacing 6N1P' s with 6922s or 7308s
  142. the "cheapo"
  143. OPT Quality Factors?
  144. 50CA10 pushpull amp
  145. New Hammonds?
  146. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  147. Voltage Gain Confusion!!
  148. is this ok to build???
  149. PSUD2 help needed
  150. It's raining 10M45's!
  151. Grid Leak Bias on small signal pentodes.
  152. Equalizing + & - output voltage?
  153. Help with ECF80 spice model
  154. Would a Williamson sound better with a CCS tail in the driver?
  155. low ac voltage question
  156. Aikido/SMPS/SKA SS
  157. values of ground(?) coupling caps in Aikido
  158. Please explain grid stoppers..
  159. Psud2 Help
  160. Appropriate Iron for 211 Triode SE
  161. does anyone know the resistance of a hammond 300bx transformer
  162. Help with Aikido B+ Bias layout
  163. 12v 6BF7 preamp design tested
  164. power supply PLEASE HELP
  165. power supply PLEASE HELP
  166. power supply PLEASE HELP
  167. tube amp
  168. 6AU8A, and assorted questions
  169. PPP OPT clarification
  170. ECC83/12AX7 Tube test query
  171. 0D3 shunt regulator for single ended duty
  172. where to buy parts (transformers and chokes)
  173. beefy choke -- please help
  174. 5W EL84 drive EL84 SE
  175. Calculate minimum load current of choke?
  176. Best Sounding Output Tube
  177. Best internal wiring for power
  178. Preamp with DHT
  179. bogen m60 and webster pa
  180. 6p13p schematic
  181. Buzzing Choke - Any Ideas?
  182. Floating A2 Bias
  183. Any SE project for 91db speaker?
  184. Hammond Mains Transformer - Center Tap Split
  185. Fixed Bias v Ultrapath
  186. cathode follower asymmetric slew
  187. 6SN7 with transformer coupling
  188. 6AQ7 - why so cheap???
  189. Grommes 260
  190. heathkit aa-81 mono blocks
  191. feedbackless interstage p-p kt88 amp
  192. Using Horizontal Output Tubes - Power Supply
  193. 6e5c
  194. Mr Liang 845 Sound :(
  195. Test pentode grids without a tester
  196. Info required : GAMMA VALVE AMPS..
  197. 6SN7 plate voltage, current and lifespan
  198. Clarification of floating heater supply
  199. Changed a cap and lost some bass...?
  200. 6P9/6AG7 Triode Amplifier
  201. Chokes Designed for Choke Input PSU's
  202. Power trafo...
  203. Any value to modding a UL OPT to CFBK?
  204. Rogers Cadet III Advice & Opinions Needed
  205. DCG5/5000GS Valve
  206. Morgan Jones on Google Books
  207. CCS for 12B4 linestage
  208. 6j9p
  209. philips hf 303 amp
  210. DIY tube testing Curve Tracer
  211. Amplifier impedance and pot selection
  212. Tube rise time and slew rate
  213. What's your favourite sounding DIY/kit tube amp?
  214. How to convert a 220v Chinese amp to 110v for US use
  215. look for schematic of 12v preamp ???
  216. Bevois Valley and parallel push pull
  217. Amp Wiring Color Code
  218. Xindak 805 monos $4700/pr USD
  219. A new DHT power supply idea
  220. 852 tube
  221. Tube Matcher help needed, ala PassDIY
  222. What's the difference?
  223. Cathode Feedback How-To?
  224. Is Thier Away To Clear Up Distortion???
  225. How much feedback for PP penthode?
  226. To regulate or not to regulate
  227. Anyone used interstage transformers for a 300B?
  228. Hissing Sound in KT88 Amp
  229. Go black or go around?
  230. Triodes that would like a 10K a-a OPT?
  231. Yaqin mc10L
  232. Cycline3 on the 12AU7
  233. How Would You Change This Soildstate Circuit To Tube
  234. Using existing transformer winding to provide and additional supply
  235. Magnetic shields for transformers
  236. First DIY job: Dual Tube Recording Preamp
  237. James Transformers
  238. Audiopax Model 7
  239. Isis 3030 Monoblocks
  240. From diode to tube rectification in my Aikido
  241. Williamson KT77 Question
  242. mu followers --- current --- please help
  243. need tube schematic
  244. switch snubber for Aikido
  245. Pioneer Tube Schematics
  246. Question about "bloaty" bass with SET and KT88's
  247. Ultron 6v6GT
  248. low power OTLs
  249. 6H30 equivalents
  250. What Would You Do?

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