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  1. crackling sound from one channel
  2. Cosmos Valve amplifier
  3. The Vacuum Tube Truth
  4. Inverted Triode SE OTL
  5. Negative feedback problems on ECL82 SE amp.
  6. Cheap tester?
  7. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  8. Fisher SA 1000
  9. Hot Hot Hot
  10. Dynaco PAS-4 manual
  11. amplifier pp with 6p3s
  12. rusty chassis - what to do?
  13. Use 9 pin Aikido PCB kit or buy 8 pin ?
  14. Where to find data sheets?
  15. how to reverse signal for Common Cathode circuit
  16. Audio note M2 power supply resistor value
  17. Are 6DZ7 to Rare to be fun?
  18. 7868 substitutes
  19. Millet Hybrid - stacked buffers
  20. Repairing an old tube raido
  21. 3 way ultimate DIY phonostage match!
  22. wanted sv572-3
  23. General Aikido power supply question
  24. question about beefing up my monoblocks
  25. multichannel tube amp
  26. Who can explain this FFT graph to me
  27. Equivalent Noise Resistance
  28. Any Tube heads near Central coast NSW
  29. Question
  30. Screen Supply For PP Amp
  31. Datasheets: RC coupled amp VS. typical characteristics
  32. How to calculate Tube Preamp output impedance?
  33. What vintage tube books do you own?
  34. re design of a SE tube amplifier
  35. NRI 70 tube chart
  36. Multimeter
  37. fizzy and unstable
  38. Russian spud amp
  39. Silly Question about 807
  40. Help with dared MP-15, please!
  41. tube tester B&k 606 Transformer brun need help
  42. Do tube curves tell most of the story?
  43. Sovtek 6B4-G
  44. Ultimate Amplifier
  45. How quiet is dead quiet?
  46. Max B+ for triode-connected KT88
  47. Acrosound Archive
  48. Hail to Vintage Power Transformer & Choke?
  49. 2a3 parafeed
  50. Kimmel mu stage
  51. 4043c
  52. Impedance quandary
  53. 6L6G Amp recommendations
  54. Beefing up the power supply
  55. System distortion and Single Ended Tube Amps
  56. TB3/1000 is alive ! ("European 833A")
  57. Another tube newb
  58. Decoding another recycled power trans
  59. parafeed plate choke calculation
  60. New to tube building / design - Input requested!
  61. tube preamp with hum??emf
  62. Which tubes for this OPT?
  63. Vacuum tube tester, do you own one?
  64. Ping salas re: LED baising
  65. Model train throttles?
  66. Microphonics that go away by themselves
  67. Variable cathode/plate resistors?
  68. 2 newbe questions
  69. 12B4A + LL1671 Linestage
  70. Distortion Analysis using an Oscilloscope
  71. Western Electric 'Harmonic Equalizer'
  72. Tube Newb Mc Intosh questions.
  73. AH NJoe TJOEB, valve compatibility issue
  74. Tubes: test as New? translation please
  75. new s5 tube amp kit
  76. Stereo BusBar OK?
  77. Fi Primer 807
  78. Calculating power output in the design stage?
  79. Overdriving the grid of a triode
  80. Newb Questions RE: HS caps & B+ Bias
  81. mercury vapor... i love it!!!
  82. Interstage Couple 300B 811-3 SE amp
  83. PCB Trace Clearance for High Voltage
  84. youtube - tubes!
  85. Noob to the Leak ST20
  86. Unconditional stability, phase shift and feedback
  87. An almost DIY 6DJ8 Linestage
  88. Is Acrosound T-330 really good?
  89. My 1st amp just came to life......pics
  90. Russian tube power amp repair
  91. Unity coupled circuit amplifier.
  92. info about lectron JH50
  93. G.E. 6CA7/EL34 - any good?
  94. SS Preamp and Tube Poweramp
  95. Values for OTL totem pole (cathode followers)
  96. 12au7 preamp will not work
  97. A Slew of Beginer Tube Questions
  98. calculating b+ voltage drop, decoupling?
  99. Another SET 2A3 in the world
  100. Help needed with Lectron JH 50 Amp
  101. Audio Note M2 regulator schematic
  102. 300b
  103. Three Simple Questions!!
  104. Edcor Transformers
  105. LTP with CCS - IM Distortion
  106. Strange 45 behaviour - help
  107. I have $250 to spend..what amp should I build?
  108. CCs plate load for mu follower 6sn7
  109. Best use of S-265 opt?
  110. what would be a reasonable price to pay for this tube ?
  111. Distortion Neutralizer for Odd Harmonics
  112. 6H13C preamp
  113. Testing tube for noise
  114. Optimal Umbilical Runs and Connections
  115. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  116. Film capacitors for decoupling
  117. Non-simultaneous Pentode anode/G2 turn-on
  118. ArnoldC's IT coupled 300B amplifier
  119. Ultralinear pse
  120. Using 0D3's for DC regulation in Aikido
  121. ECC40 preamp
  122. Newbie PS questions
  123. Another cap replacement: uF changes..
  124. parallel EL84 transconductance amp
  125. Quad II Modified by Glenn Croft
  126. Wanted:Power transformers for Welborne DRD 300B amp
  127. Just finished testing my first 832A amp
  128. Russian Transformer cores
  129. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  130. 15E and plate curves
  131. Replacing 6N1P' s with 6922s or 7308s
  132. the "cheapo"
  133. OPT Quality Factors?
  134. 50CA10 pushpull amp
  135. New Hammonds?
  136. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  137. Voltage Gain Confusion!!
  138. is this ok to build???
  139. PSUD2 help needed
  140. It's raining 10M45's!
  141. Grid Leak Bias on small signal pentodes.
  142. Equalizing + & - output voltage?
  143. Help with ECF80 spice model
  144. Would a Williamson sound better with a CCS tail in the driver?
  145. low ac voltage question
  146. Aikido/SMPS/SKA SS
  147. values of ground(?) coupling caps in Aikido
  148. Please explain grid stoppers..
  149. Psud2 Help
  150. Appropriate Iron for 211 Triode SE
  151. does anyone know the resistance of a hammond 300bx transformer
  152. Help with Aikido B+ Bias layout
  153. 12v 6BF7 preamp design tested
  154. power supply PLEASE HELP
  155. power supply PLEASE HELP
  156. power supply PLEASE HELP
  157. tube amp
  158. 6AU8A, and assorted questions
  159. PPP OPT clarification
  160. ECC83/12AX7 Tube test query
  161. 0D3 shunt regulator for single ended duty
  162. where to buy parts (transformers and chokes)
  163. beefy choke -- please help
  164. 5W EL84 drive EL84 SE
  165. Calculate minimum load current of choke?
  166. Best Sounding Output Tube
  167. Best internal wiring for power
  168. Preamp with DHT
  169. bogen m60 and webster pa
  170. 6p13p schematic
  171. Buzzing Choke - Any Ideas?
  172. Floating A2 Bias
  173. Any SE project for 91db speaker?
  174. Hammond Mains Transformer - Center Tap Split
  175. TINA-TI Tube Simulation
  176. Fixed Bias v Ultrapath
  177. cathode follower asymmetric slew
  178. 6SN7 with transformer coupling
  179. 6AQ7 - why so cheap???
  180. Grommes 260
  181. heathkit aa-81 mono blocks
  182. feedbackless interstage p-p kt88 amp
  183. Using Horizontal Output Tubes - Power Supply
  184. 6e5c
  185. Mr Liang 845 Sound :(
  186. Test pentode grids without a tester
  187. Info required : GAMMA VALVE AMPS..
  188. 6SN7 plate voltage, current and lifespan
  189. Clarification of floating heater supply
  190. Changed a cap and lost some bass...?
  191. 6P9/6AG7 Triode Amplifier
  192. Chokes Designed for Choke Input PSU's
  193. Power trafo...
  194. Any value to modding a UL OPT to CFBK?
  195. Rogers Cadet III Advice & Opinions Needed
  196. DCG5/5000GS Valve
  197. Morgan Jones on Google Books
  198. CCS for 12B4 linestage
  199. 6j9p
  200. philips hf 303 amp
  201. DIY tube testing Curve Tracer
  202. Amplifier impedance and pot selection
  203. Tube rise time and slew rate
  204. What's your favourite sounding DIY/kit tube amp?
  205. How to convert a 220v Chinese amp to 110v for US use
  206. look for schematic of 12v preamp ???
  207. Bevois Valley and parallel push pull
  208. Amp Wiring Color Code
  209. Xindak 805 monos $4700/pr USD
  210. A new DHT power supply idea
  211. 852 tube
  212. Tube Matcher help needed, ala PassDIY
  213. What's the difference?
  214. Cathode Feedback How-To?
  215. Is Thier Away To Clear Up Distortion???
  216. How much feedback for PP penthode?
  217. To regulate or not to regulate
  218. Anyone used interstage transformers for a 300B?
  219. Hissing Sound in KT88 Amp
  220. Go black or go around?
  221. Triodes that would like a 10K a-a OPT?
  222. Yaqin mc10L
  223. Cycline3 on the 12AU7
  224. How Would You Change This Soildstate Circuit To Tube
  225. Using existing transformer winding to provide and additional supply
  226. Magnetic shields for transformers
  227. First DIY job: Dual Tube Recording Preamp
  228. James Transformers
  229. Audiopax Model 7
  230. Isis 3030 Monoblocks
  231. From diode to tube rectification in my Aikido
  232. Williamson KT77 Question
  233. mu followers --- current --- please help
  234. need tube schematic
  235. switch snubber for Aikido
  236. Pioneer Tube Schematics
  237. Question about "bloaty" bass with SET and KT88's
  238. Ultron 6v6GT
  239. low power OTLs
  240. 6H30 equivalents
  241. What Would You Do?
  242. k-502/k-12m vs. Model 1 pcl82
  243. Shunting Pot
  244. Suggested replacements for Chinese tubes
  245. What to do with these.....
  246. ECL82 PP "reference" amp
  247. Heater TX proximity
  248. Quick question on the PP-C1 amp
  249. SET "interstage coupler" for First Watt F4
  250. 811A amp Class A2

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