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  1. Audio Innovations Series 200 Phono Stage
  2. is it correct to calculate OTL?
  3. Late Halloween Cartoon
  4. on/off/on switch for bright/bold?
  5. Another CCS for tubes/valves: PCBs
  6. Customdaveus
  7. newbie questions on Bogen M330A repair
  8. crackling sound from one channel
  9. Cosmos Valve amplifier
  10. The Vacuum Tube Truth
  11. Inverted Triode SE OTL
  12. Negative feedback problems on ECL82 SE amp.
  13. Cheap tester?
  14. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  15. Fisher SA 1000
  16. Hot Hot Hot
  17. Dynaco PAS-4 manual
  18. amplifier pp with 6p3s
  19. rusty chassis - what to do?
  20. Use 9 pin Aikido PCB kit or buy 8 pin ?
  21. Where to find data sheets?
  22. how to reverse signal for Common Cathode circuit
  23. Audio note M2 power supply resistor value
  24. Are 6DZ7 to Rare to be fun?
  25. 7868 substitutes
  26. Millet Hybrid - stacked buffers
  27. Repairing an old tube raido
  28. 3 way ultimate DIY phonostage match!
  29. wanted sv572-3
  30. General Aikido power supply question
  31. question about beefing up my monoblocks
  32. multichannel tube amp
  33. Who can explain this FFT graph to me
  34. Equivalent Noise Resistance
  35. Any Tube heads near Central coast NSW
  36. Question
  37. Screen Supply For PP Amp
  38. Datasheets: RC coupled amp VS. typical characteristics
  39. How to calculate Tube Preamp output impedance?
  40. What vintage tube books do you own?
  41. re design of a SE tube amplifier
  42. NRI 70 tube chart
  43. Multimeter
  44. fizzy and unstable
  45. Russian spud amp
  46. Silly Question about 807
  47. Help with dared MP-15, please!
  48. tube tester B&k 606 Transformer brun need help
  49. Do tube curves tell most of the story?
  50. Sovtek 6B4-G
  51. Ultimate Amplifier
  52. How quiet is dead quiet?
  53. Max B+ for triode-connected KT88
  54. Acrosound Archive
  55. Hail to Vintage Power Transformer & Choke?
  56. 2a3 parafeed
  57. Kimmel mu stage
  58. 4043c
  59. Impedance quandary
  60. 6L6G Amp recommendations
  61. Beefing up the power supply
  62. System distortion and Single Ended Tube Amps
  63. TB3/1000 is alive ! ("European 833A")
  64. Another tube newb
  65. Decoding another recycled power trans
  66. parafeed plate choke calculation
  67. New to tube building / design - Input requested!
  68. tube preamp with hum??emf
  69. Which tubes for this OPT?
  70. Vacuum tube tester, do you own one?
  71. Ping salas re: LED baising
  72. Model train throttles?
  73. Microphonics that go away by themselves
  74. Variable cathode/plate resistors?
  75. 2 newbe questions
  76. 12B4A + LL1671 Linestage
  77. Distortion Analysis using an Oscilloscope
  78. Western Electric 'Harmonic Equalizer'
  79. Tube Newb Mc Intosh questions.
  80. AH NJoe TJOEB, valve compatibility issue
  81. Tubes: test as New? translation please
  82. new s5 tube amp kit
  83. Stereo BusBar OK?
  84. Fi Primer 807
  85. Calculating power output in the design stage?
  86. Overdriving the grid of a triode
  87. Newb Questions RE: HS caps & B+ Bias
  88. mercury vapor... i love it!!!
  89. Interstage Couple 300B 811-3 SE amp
  90. PCB Trace Clearance for High Voltage
  91. youtube - tubes!
  92. Noob to the Leak ST20
  93. Unconditional stability, phase shift and feedback
  94. An almost DIY 6DJ8 Linestage
  95. Is Acrosound T-330 really good?
  96. My 1st amp just came to life......pics
  97. Russian tube power amp repair
  98. Unity coupled circuit amplifier.
  99. info about lectron JH50
  100. G.E. 6CA7/EL34 - any good?
  101. SS Preamp and Tube Poweramp
  102. Values for OTL totem pole (cathode followers)
  103. 12au7 preamp will not work
  104. A Slew of Beginer Tube Questions
  105. calculating b+ voltage drop, decoupling?
  106. Another SET 2A3 in the world
  107. Help needed with Lectron JH 50 Amp
  108. Audio Note M2 regulator schematic
  109. 300b
  110. Three Simple Questions!!
  111. Edcor Transformers
  112. LTP with CCS - IM Distortion
  113. Strange 45 behaviour - help
  114. I have $250 to spend..what amp should I build?
  115. CCs plate load for mu follower 6sn7
  116. Best use of S-265 opt?
  117. what would be a reasonable price to pay for this tube ?
  118. Distortion Neutralizer for Odd Harmonics
  119. 6H13C preamp
  120. Testing tube for noise
  121. Optimal Umbilical Runs and Connections
  122. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  123. Film capacitors for decoupling
  124. Non-simultaneous Pentode anode/G2 turn-on
  125. ArnoldC's IT coupled 300B amplifier
  126. Ultralinear pse
  127. Using 0D3's for DC regulation in Aikido
  128. ECC40 preamp
  129. Newbie PS questions
  130. Another cap replacement: uF changes..
  131. parallel EL84 transconductance amp
  132. Quad II Modified by Glenn Croft
  133. Wanted:Power transformers for Welborne DRD 300B amp
  134. Just finished testing my first 832A amp
  135. Russian Transformer cores
  136. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  137. 15E and plate curves
  138. Replacing 6N1P' s with 6922s or 7308s
  139. the "cheapo"
  140. OPT Quality Factors?
  141. 50CA10 pushpull amp
  142. New Hammonds?
  143. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  144. Voltage Gain Confusion!!
  145. is this ok to build???
  146. PSUD2 help needed
  147. It's raining 10M45's!
  148. Grid Leak Bias on small signal pentodes.
  149. Equalizing + & - output voltage?
  150. Help with ECF80 spice model
  151. Would a Williamson sound better with a CCS tail in the driver?
  152. low ac voltage question
  153. Aikido/SMPS/SKA SS
  154. values of ground(?) coupling caps in Aikido
  155. Please explain grid stoppers..
  156. Psud2 Help
  157. Appropriate Iron for 211 Triode SE
  158. does anyone know the resistance of a hammond 300bx transformer
  159. Help with Aikido B+ Bias layout
  160. 12v 6BF7 preamp design tested
  161. power supply PLEASE HELP
  162. power supply PLEASE HELP
  163. power supply PLEASE HELP
  164. tube amp
  165. 6AU8A, and assorted questions
  166. PPP OPT clarification
  167. ECC83/12AX7 Tube test query
  168. 0D3 shunt regulator for single ended duty
  169. where to buy parts (transformers and chokes)
  170. beefy choke -- please help
  171. 5W EL84 drive EL84 SE
  172. Calculate minimum load current of choke?
  173. Best Sounding Output Tube
  174. Best internal wiring for power
  175. Preamp with DHT
  176. bogen m60 and webster pa
  177. 6p13p schematic
  178. Buzzing Choke - Any Ideas?
  179. Floating A2 Bias
  180. Any SE project for 91db speaker?
  181. Hammond Mains Transformer - Center Tap Split
  182. TINA-TI Tube Simulation
  183. Fixed Bias v Ultrapath
  184. cathode follower asymmetric slew
  185. 6SN7 with transformer coupling
  186. 6AQ7 - why so cheap???
  187. Grommes 260
  188. heathkit aa-81 mono blocks
  189. feedbackless interstage p-p kt88 amp
  190. Using Horizontal Output Tubes - Power Supply
  191. 6e5c
  192. Mr Liang 845 Sound :(
  193. Test pentode grids without a tester
  194. Info required : GAMMA VALVE AMPS..
  195. 6SN7 plate voltage, current and lifespan
  196. Clarification of floating heater supply
  197. Changed a cap and lost some bass...?
  198. 6P9/6AG7 Triode Amplifier
  199. Chokes Designed for Choke Input PSU's
  200. Power trafo...
  201. Any value to modding a UL OPT to CFBK?
  202. Rogers Cadet III Advice & Opinions Needed
  203. DCG5/5000GS Valve
  204. Morgan Jones on Google Books
  205. CCS for 12B4 linestage
  206. 6j9p
  207. philips hf 303 amp
  208. DIY tube testing Curve Tracer
  209. Amplifier impedance and pot selection
  210. Tube rise time and slew rate
  211. What's your favourite sounding DIY/kit tube amp?
  212. How to convert a 220v Chinese amp to 110v for US use
  213. look for schematic of 12v preamp ???
  214. Bevois Valley and parallel push pull
  215. Amp Wiring Color Code
  216. Xindak 805 monos $4700/pr USD
  217. A new DHT power supply idea
  218. 852 tube
  219. Tube Matcher help needed, ala PassDIY
  220. What's the difference?
  221. Cathode Feedback How-To?
  222. Is Thier Away To Clear Up Distortion???
  223. How much feedback for PP penthode?
  224. To regulate or not to regulate
  225. Anyone used interstage transformers for a 300B?
  226. Hissing Sound in KT88 Amp
  227. Go black or go around?
  228. Triodes that would like a 10K a-a OPT?
  229. Yaqin mc10L
  230. Cycline3 on the 12AU7
  231. How Would You Change This Soildstate Circuit To Tube
  232. Using existing transformer winding to provide and additional supply
  233. Magnetic shields for transformers
  234. First DIY job: Dual Tube Recording Preamp
  235. James Transformers
  236. Audiopax Model 7
  237. Isis 3030 Monoblocks
  238. From diode to tube rectification in my Aikido
  239. Williamson KT77 Question
  240. mu followers --- current --- please help
  241. need tube schematic
  242. switch snubber for Aikido
  243. Pioneer Tube Schematics
  244. Question about "bloaty" bass with SET and KT88's
  245. Ultron 6v6GT
  246. low power OTLs
  247. 6H30 equivalents
  248. What Would You Do?
  249. k-502/k-12m vs. Model 1 pcl82
  250. Shunting Pot

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