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  1. Caps in Voltage divider Heater Bias ?
  2. Looking for Melos triode 200+ schematics
  3. ETF07 brief summary
  4. No response from Vacuumtubes.net
  5. dynakit pam selenium rectifier replacement help
  6. Adjustable Fixed Grid Bias
  7. Best output transformer for 300B
  8. Transconductance of E88CC,6922,6N23P
  9. Finding The Root Of The Problem
  10. Beard P35
  11. purple tube heaters...
  12. Which 12AU7 and 6V6GTs?
  13. 6f2 - 6n1???
  14. Help with Schematic
  15. Class A Push Pull with 6L6GC
  16. EL84 driver tube, with less than 5mA current
  17. Sleeping Sickness
  18. 50L6-GT or 6W6-GT
  19. Help ID this transformer
  20. Tube dropping - Help?
  21. For anyone running a K-502 with a FR driver
  22. Active crossover
  23. General guidence building guitar amp
  24. Pounds, Shillings and Pence
  25. Trying to learn something, against my better judgment
  26. Battery grid bias to fixed bias in Toccato?
  27. PLS take a look!
  28. Use for 5K:8 PP OPT?
  29. Low amp Impedance input and high dac output
  30. The Magic of a Name
  31. which edition of Morgan Jones' books?
  32. altec 1530 schematic
  33. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  34. 6HB6/6HA& Spud?
  35. schematic diagram golden tube se40 for repair! help
  36. Reliable B+ PSU for pro preamp
  37. Help me find some info please
  38. Some tube radios
  39. Electro Harmonix 300b...shorting problems?
  40. Aikido linestage tube choice? (again)
  41. Teeco 1220??
  42. magic smoke pilot aa903
  43. PP bias balance pot
  44. Jolida JD 502A
  45. Cathode Bias for SimpleSE
  46. TRemPre malfunctioning
  47. HV benchtop power supply, help on opamp setup
  48. Transcendar Output Transformers ST70
  49. Unofficial Tube Market Survey
  50. testing 6DJ8s
  51. 6L6 AB PPP stage; does it make sense?
  52. 7868 tubes - replace with 6L6's?
  53. Vintage Amp...too much gain on CD
  54. ETF07 - Last possibility to join
  55. Tube 7403
  56. New SET: JE labs simple 45 or tubelab SE?
  57. Melos triode and computer as source: BUZZ BUZZ BUZZ
  58. 6SN7 Cascoded CCS
  59. 7591 se tube amp?
  60. Sovtek 5881WXT/Quad II
  61. Adding more capacitors to an AMP
  62. Tube Characteristics
  63. Tube guilt
  64. KT88 or 6550
  65. Single ended OTL Transcendent
  66. K-12 kit, buzz in R channel
  67. Hickok 752A repair
  68. my new tube line stage
  69. Audio Innovations Series 200 Phono Stage
  70. is it correct to calculate OTL?
  71. Late Halloween Cartoon
  72. on/off/on switch for bright/bold?
  73. Another CCS for tubes/valves: PCBs
  74. Customdaveus
  75. newbie questions on Bogen M330A repair
  76. crackling sound from one channel
  77. Cosmos Valve amplifier
  78. The Vacuum Tube Truth
  79. Inverted Triode SE OTL
  80. Negative feedback problems on ECL82 SE amp.
  81. Cheap tester?
  82. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  83. Fisher SA 1000
  84. Hot Hot Hot
  85. Dynaco PAS-4 manual
  86. amplifier pp with 6p3s
  87. rusty chassis - what to do?
  88. Use 9 pin Aikido PCB kit or buy 8 pin ?
  89. Where to find data sheets?
  90. how to reverse signal for Common Cathode circuit
  91. Audio note M2 power supply resistor value
  92. Are 6DZ7 to Rare to be fun?
  93. 7868 substitutes
  94. Millet Hybrid - stacked buffers
  95. Repairing an old tube raido
  96. 3 way ultimate DIY phonostage match!
  97. wanted sv572-3
  98. General Aikido power supply question
  99. question about beefing up my monoblocks
  100. multichannel tube amp
  101. Who can explain this FFT graph to me
  102. Equivalent Noise Resistance
  103. Any Tube heads near Central coast NSW
  104. Question
  105. Screen Supply For PP Amp
  106. Datasheets: RC coupled amp VS. typical characteristics
  107. How to calculate Tube Preamp output impedance?
  108. What vintage tube books do you own?
  109. re design of a SE tube amplifier
  110. NRI 70 tube chart
  111. Multimeter
  112. fizzy and unstable
  113. Russian spud amp
  114. Silly Question about 807
  115. Help with dared MP-15, please!
  116. tube tester B&k 606 Transformer brun need help
  117. Do tube curves tell most of the story?
  118. Sovtek 6B4-G
  119. Ultimate Amplifier
  120. How quiet is dead quiet?
  121. Max B+ for triode-connected KT88
  122. Acrosound Archive
  123. Hail to Vintage Power Transformer & Choke?
  124. 2a3 parafeed
  125. Kimmel mu stage
  126. 4043c
  127. Impedance quandary
  128. 6L6G Amp recommendations
  129. Beefing up the power supply
  130. System distortion and Single Ended Tube Amps
  131. TB3/1000 is alive ! ("European 833A")
  132. Another tube newb
  133. Decoding another recycled power trans
  134. parafeed plate choke calculation
  135. New to tube building / design - Input requested!
  136. tube preamp with hum??emf
  137. Which tubes for this OPT?
  138. Vacuum tube tester, do you own one?
  139. Ping salas re: LED baising
  140. Model train throttles?
  141. Microphonics that go away by themselves
  142. Variable cathode/plate resistors?
  143. 2 newbe questions
  144. 12B4A + LL1671 Linestage
  145. crate vintage "club 50" schematics needed
  146. Distortion Analysis using an Oscilloscope
  147. Western Electric 'Harmonic Equalizer'
  148. Tube Newb Mc Intosh questions.
  149. AH NJoe TJOEB, valve compatibility issue
  150. Tubes: test as New? translation please
  151. new s5 tube amp kit
  152. Stereo BusBar OK?
  153. Fi Primer 807
  154. Calculating power output in the design stage?
  155. Overdriving the grid of a triode
  156. Newb Questions RE: HS caps & B+ Bias
  157. mercury vapor... i love it!!!
  158. Interstage Couple 300B 811-3 SE amp
  159. PCB Trace Clearance for High Voltage
  160. youtube - tubes!
  161. Noob to the Leak ST20
  162. Unconditional stability, phase shift and feedback
  163. An almost DIY 6DJ8 Linestage
  164. Is Acrosound T-330 really good?
  165. My 1st amp just came to life......pics
  166. Russian tube power amp repair
  167. Unity coupled circuit amplifier.
  168. info about lectron JH50
  169. G.E. 6CA7/EL34 - any good?
  170. black face champ tubes
  171. SS Preamp and Tube Poweramp
  172. Values for OTL totem pole (cathode followers)
  173. 12au7 preamp will not work
  174. A Slew of Beginer Tube Questions
  175. calculating b+ voltage drop, decoupling?
  176. Another SET 2A3 in the world
  177. Help needed with Lectron JH 50 Amp
  178. Audio Note M2 regulator schematic
  179. 300b
  180. Three Simple Questions!!
  181. Edcor Transformers
  182. LTP with CCS - IM Distortion
  183. Strange 45 behaviour - help
  184. I have $250 to spend..what amp should I build?
  185. CCs plate load for mu follower 6sn7
  186. Best use of S-265 opt?
  187. what would be a reasonable price to pay for this tube ?
  188. Distortion Neutralizer for Odd Harmonics
  189. 6H13C preamp
  190. Testing tube for noise
  191. Optimal Umbilical Runs and Connections
  192. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  193. Film capacitors for decoupling
  194. Non-simultaneous Pentode anode/G2 turn-on
  195. ArnoldC's IT coupled 300B amplifier
  196. Ultralinear pse
  197. Using 0D3's for DC regulation in Aikido
  198. ECC40 preamp
  199. Newbie PS questions
  200. Preliminary 12AX7 guitar preamp
  201. Another cap replacement: uF changes..
  202. parallel EL84 transconductance amp
  203. Quad II Modified by Glenn Croft
  204. Wanted:Power transformers for Welborne DRD 300B amp
  205. Just finished testing my first 832A amp
  206. Russian Transformer cores
  207. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  208. 15E and plate curves
  209. Replacing 6N1P' s with 6922s or 7308s
  210. the "cheapo"
  211. OPT Quality Factors?
  212. 50CA10 pushpull amp
  213. New Hammonds?
  214. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  215. Voltage Gain Confusion!!
  216. is this ok to build???
  217. PSUD2 help needed
  218. It's raining 10M45's!
  219. Grid Leak Bias on small signal pentodes.
  220. Equalizing + & - output voltage?
  221. Help with ECF80 spice model
  222. Would a Williamson sound better with a CCS tail in the driver?
  223. low ac voltage question
  224. Aikido/SMPS/SKA SS
  225. values of ground(?) coupling caps in Aikido
  226. Please explain grid stoppers..
  227. Psud2 Help
  228. Appropriate Iron for 211 Triode SE
  229. does anyone know the resistance of a hammond 300bx transformer
  230. Help with Aikido B+ Bias layout
  231. 12v 6BF7 preamp design tested
  232. power supply PLEASE HELP
  233. power supply PLEASE HELP
  234. power supply PLEASE HELP
  235. tube amp
  236. 6AU8A, and assorted questions
  237. PPP OPT clarification
  238. ECC83/12AX7 Tube test query
  239. 0D3 shunt regulator for single ended duty
  240. where to buy parts (transformers and chokes)
  241. beefy choke -- please help
  242. 5W EL84 drive EL84 SE
  243. Calculate minimum load current of choke?
  244. Best Sounding Output Tube
  245. Best internal wiring for power
  246. Preamp with DHT
  247. bogen m60 and webster pa
  248. 6p13p schematic
  249. Buzzing Choke - Any Ideas?
  250. Floating A2 Bias

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