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  1. Finding The Root Of The Problem
  2. Beard P35
  3. purple tube heaters...
  4. Which 12AU7 and 6V6GTs?
  5. 6f2 - 6n1???
  6. Help with Schematic
  7. Class A Push Pull with 6L6GC
  8. EL84 driver tube, with less than 5mA current
  9. Sleeping Sickness
  10. 50L6-GT or 6W6-GT
  11. Help ID this transformer
  12. Tube dropping - Help?
  13. For anyone running a K-502 with a FR driver
  14. Active crossover
  15. General guidence building guitar amp
  16. Pounds, Shillings and Pence
  17. Trying to learn something, against my better judgment
  18. Battery grid bias to fixed bias in Toccato?
  19. PLS take a look!
  20. Use for 5K:8 PP OPT?
  21. Low amp Impedance input and high dac output
  22. The Magic of a Name
  23. which edition of Morgan Jones' books?
  24. altec 1530 schematic
  25. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  26. 6HB6/6HA& Spud?
  27. schematic diagram golden tube se40 for repair! help
  28. Reliable B+ PSU for pro preamp
  29. Help me find some info please
  30. Some tube radios
  31. Electro Harmonix 300b...shorting problems?
  32. Aikido linestage tube choice? (again)
  33. Teeco 1220??
  34. magic smoke pilot aa903
  35. PP bias balance pot
  36. Jolida JD 502A
  37. Cathode Bias for SimpleSE
  38. TRemPre malfunctioning
  39. HV benchtop power supply, help on opamp setup
  40. Transcendar Output Transformers ST70
  41. Unofficial Tube Market Survey
  42. testing 6DJ8s
  43. 6L6 AB PPP stage; does it make sense?
  44. 7868 tubes - replace with 6L6's?
  45. Vintage Amp...too much gain on CD
  46. ETF07 - Last possibility to join
  47. Tube 7403
  48. New SET: JE labs simple 45 or tubelab SE?
  49. Melos triode and computer as source: BUZZ BUZZ BUZZ
  50. 6SN7 Cascoded CCS
  51. 7591 se tube amp?
  52. Sovtek 5881WXT/Quad II
  53. Adding more capacitors to an AMP
  54. Tube Characteristics
  55. Tube guilt
  56. KT88 or 6550
  57. Single ended OTL Transcendent
  58. K-12 kit, buzz in R channel
  59. Hickok 752A repair
  60. my new tube line stage
  61. Audio Innovations Series 200 Phono Stage
  62. is it correct to calculate OTL?
  63. Late Halloween Cartoon
  64. on/off/on switch for bright/bold?
  65. Another CCS for tubes/valves: PCBs
  66. Customdaveus
  67. newbie questions on Bogen M330A repair
  68. crackling sound from one channel
  69. Cosmos Valve amplifier
  70. The Vacuum Tube Truth
  71. Inverted Triode SE OTL
  72. Negative feedback problems on ECL82 SE amp.
  73. Cheap tester?
  74. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  75. Fisher SA 1000
  76. Hot Hot Hot
  77. Dynaco PAS-4 manual
  78. amplifier pp with 6p3s
  79. rusty chassis - what to do?
  80. Use 9 pin Aikido PCB kit or buy 8 pin ?
  81. Where to find data sheets?
  82. how to reverse signal for Common Cathode circuit
  83. Audio note M2 power supply resistor value
  84. Are 6DZ7 to Rare to be fun?
  85. 7868 substitutes
  86. Millet Hybrid - stacked buffers
  87. Repairing an old tube raido
  88. 3 way ultimate DIY phonostage match!
  89. wanted sv572-3
  90. General Aikido power supply question
  91. question about beefing up my monoblocks
  92. multichannel tube amp
  93. Who can explain this FFT graph to me
  94. Equivalent Noise Resistance
  95. Any Tube heads near Central coast NSW
  96. Question
  97. Screen Supply For PP Amp
  98. Datasheets: RC coupled amp VS. typical characteristics
  99. How to calculate Tube Preamp output impedance?
  100. What vintage tube books do you own?
  101. re design of a SE tube amplifier
  102. NRI 70 tube chart
  103. Multimeter
  104. fizzy and unstable
  105. Russian spud amp
  106. Silly Question about 807
  107. Help with dared MP-15, please!
  108. tube tester B&k 606 Transformer brun need help
  109. Do tube curves tell most of the story?
  110. Sovtek 6B4-G
  111. Ultimate Amplifier
  112. How quiet is dead quiet?
  113. Max B+ for triode-connected KT88
  114. Acrosound Archive
  115. Hail to Vintage Power Transformer & Choke?
  116. 2a3 parafeed
  117. Kimmel mu stage
  118. 4043c
  119. Impedance quandary
  120. 6L6G Amp recommendations
  121. Beefing up the power supply
  122. System distortion and Single Ended Tube Amps
  123. TB3/1000 is alive ! ("European 833A")
  124. Another tube newb
  125. Decoding another recycled power trans
  126. parafeed plate choke calculation
  127. New to tube building / design - Input requested!
  128. tube preamp with hum??emf
  129. Which tubes for this OPT?
  130. Vacuum tube tester, do you own one?
  131. Ping salas re: LED baising
  132. Model train throttles?
  133. Microphonics that go away by themselves
  134. Variable cathode/plate resistors?
  135. 2 newbe questions
  136. 12B4A + LL1671 Linestage
  137. crate vintage "club 50" schematics needed
  138. Distortion Analysis using an Oscilloscope
  139. Western Electric 'Harmonic Equalizer'
  140. Tube Newb Mc Intosh questions.
  141. AH NJoe TJOEB, valve compatibility issue
  142. Tubes: test as New? translation please
  143. new s5 tube amp kit
  144. Stereo BusBar OK?
  145. Fi Primer 807
  146. Calculating power output in the design stage?
  147. Overdriving the grid of a triode
  148. Newb Questions RE: HS caps & B+ Bias
  149. mercury vapor... i love it!!!
  150. Interstage Couple 300B 811-3 SE amp
  151. PCB Trace Clearance for High Voltage
  152. youtube - tubes!
  153. Noob to the Leak ST20
  154. Unconditional stability, phase shift and feedback
  155. An almost DIY 6DJ8 Linestage
  156. Is Acrosound T-330 really good?
  157. My 1st amp just came to life......pics
  158. Russian tube power amp repair
  159. Unity coupled circuit amplifier.
  160. info about lectron JH50
  161. G.E. 6CA7/EL34 - any good?
  162. black face champ tubes
  163. SS Preamp and Tube Poweramp
  164. Values for OTL totem pole (cathode followers)
  165. 12au7 preamp will not work
  166. A Slew of Beginer Tube Questions
  167. calculating b+ voltage drop, decoupling?
  168. Another SET 2A3 in the world
  169. Help needed with Lectron JH 50 Amp
  170. Audio Note M2 regulator schematic
  171. 300b
  172. Three Simple Questions!!
  173. Edcor Transformers
  174. LTP with CCS - IM Distortion
  175. Strange 45 behaviour - help
  176. I have $250 to spend..what amp should I build?
  177. CCs plate load for mu follower 6sn7
  178. Best use of S-265 opt?
  179. what would be a reasonable price to pay for this tube ?
  180. Distortion Neutralizer for Odd Harmonics
  181. 6H13C preamp
  182. Testing tube for noise
  183. Optimal Umbilical Runs and Connections
  184. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  185. Film capacitors for decoupling
  186. Non-simultaneous Pentode anode/G2 turn-on
  187. ArnoldC's IT coupled 300B amplifier
  188. Ultralinear pse
  189. Using 0D3's for DC regulation in Aikido
  190. ECC40 preamp
  191. Newbie PS questions
  192. Preliminary 12AX7 guitar preamp
  193. Another cap replacement: uF changes..
  194. parallel EL84 transconductance amp
  195. Quad II Modified by Glenn Croft
  196. Wanted:Power transformers for Welborne DRD 300B amp
  197. Just finished testing my first 832A amp
  198. Russian Transformer cores
  199. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  200. 15E and plate curves
  201. Replacing 6N1P' s with 6922s or 7308s
  202. the "cheapo"
  203. OPT Quality Factors?
  204. 50CA10 pushpull amp
  205. New Hammonds?
  206. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  207. Voltage Gain Confusion!!
  208. is this ok to build???
  209. PSUD2 help needed
  210. It's raining 10M45's!
  211. Grid Leak Bias on small signal pentodes.
  212. Equalizing + & - output voltage?
  213. Help with ECF80 spice model
  214. Would a Williamson sound better with a CCS tail in the driver?
  215. low ac voltage question
  216. Aikido/SMPS/SKA SS
  217. values of ground(?) coupling caps in Aikido
  218. Please explain grid stoppers..
  219. Psud2 Help
  220. Appropriate Iron for 211 Triode SE
  221. does anyone know the resistance of a hammond 300bx transformer
  222. Help with Aikido B+ Bias layout
  223. 12v 6BF7 preamp design tested
  224. power supply PLEASE HELP
  225. power supply PLEASE HELP
  226. power supply PLEASE HELP
  227. tube amp
  228. 6AU8A, and assorted questions
  229. PPP OPT clarification
  230. ECC83/12AX7 Tube test query
  231. 0D3 shunt regulator for single ended duty
  232. where to buy parts (transformers and chokes)
  233. beefy choke -- please help
  234. 5W EL84 drive EL84 SE
  235. Calculate minimum load current of choke?
  236. Best Sounding Output Tube
  237. Best internal wiring for power
  238. Preamp with DHT
  239. bogen m60 and webster pa
  240. 6p13p schematic
  241. Buzzing Choke - Any Ideas?
  242. Floating A2 Bias
  243. Any SE project for 91db speaker?
  244. Hammond Mains Transformer - Center Tap Split
  245. TINA-TI Tube Simulation
  246. Fixed Bias v Ultrapath
  247. Traynor YBA200 6550 help!
  248. cathode follower asymmetric slew
  249. 6SN7 with transformer coupling
  250. 6AQ7 - why so cheap???

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