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  1. Phono pre-amp Question
  2. TVA-1 cathode resistor value
  3. need power tranformer ideas
  4. Cary Cad-300b Se
  5. newbie question about 7591 cathode bias
  6. 5814 Raytheon Windmill Getter late 50's
  7. Fundamentals of tube amp design
  8. 7868 amp sounds good but low volume
  9. How does class AB2 sound?
  10. 6sn7 brand
  11. Might speaker filters be in the wrong place?
  12. Problem: attenuation after cathodyne and CF
  13. LED bias and differential pairs
  14. Kimmel Mu stage summary sheet
  15. Tube buffer for car audio
  16. Practical PSE thinking.
  17. Kr300bxls
  18. Biggest noval dual triode?
  19. 2 amps with 1 set of speakers?
  20. tubeamp kits
  21. Tripletone amplifier
  22. Help with Shunt Regulation and Noise
  23. Plug 'N' Play B+ time delay
  24. Precision PA conversion help needed
  25. Caps in Voltage divider Heater Bias ?
  26. Looking for Melos triode 200+ schematics
  27. ETF07 brief summary
  28. No response from Vacuumtubes.net
  29. dynakit pam selenium rectifier replacement help
  30. Adjustable Fixed Grid Bias
  31. Best output transformer for 300B
  32. Transconductance of E88CC,6922,6N23P
  33. Finding The Root Of The Problem
  34. Beard P35
  35. purple tube heaters...
  36. Which 12AU7 and 6V6GTs?
  37. 6f2 - 6n1???
  38. Help with Schematic
  39. Class A Push Pull with 6L6GC
  40. EL84 driver tube, with less than 5mA current
  41. Sleeping Sickness
  42. 50L6-GT or 6W6-GT
  43. Help ID this transformer
  44. Tube dropping - Help?
  45. For anyone running a K-502 with a FR driver
  46. Active crossover
  47. Pounds, Shillings and Pence
  48. Trying to learn something, against my better judgment
  49. Battery grid bias to fixed bias in Toccato?
  50. PLS take a look!
  51. Use for 5K:8 PP OPT?
  52. Low amp Impedance input and high dac output
  53. The Magic of a Name
  54. which edition of Morgan Jones' books?
  55. altec 1530 schematic
  56. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  57. 6HB6/6HA& Spud?
  58. schematic diagram golden tube se40 for repair! help
  59. Reliable B+ PSU for pro preamp
  60. Help me find some info please
  61. Some tube radios
  62. Electro Harmonix 300b...shorting problems?
  63. Aikido linestage tube choice? (again)
  64. Teeco 1220??
  65. magic smoke pilot aa903
  66. PP bias balance pot
  67. Jolida JD 502A
  68. Cathode Bias for SimpleSE
  69. TRemPre malfunctioning
  70. HV benchtop power supply, help on opamp setup
  71. Transcendar Output Transformers ST70
  72. Unofficial Tube Market Survey
  73. testing 6DJ8s
  74. 6L6 AB PPP stage; does it make sense?
  75. 7868 tubes - replace with 6L6's?
  76. Vintage Amp...too much gain on CD
  77. ETF07 - Last possibility to join
  78. Tube 7403
  79. Melos triode and computer as source: BUZZ BUZZ BUZZ
  80. 6SN7 Cascoded CCS
  81. 7591 se tube amp?
  82. Sovtek 5881WXT/Quad II
  83. Adding more capacitors to an AMP
  84. Tube Characteristics
  85. Tube guilt
  86. KT88 or 6550
  87. Single ended OTL Transcendent
  88. K-12 kit, buzz in R channel
  89. my new tube line stage
  90. Audio Innovations Series 200 Phono Stage
  91. is it correct to calculate OTL?
  92. Late Halloween Cartoon
  93. on/off/on switch for bright/bold?
  94. Another CCS for tubes/valves: PCBs
  95. Customdaveus
  96. newbie questions on Bogen M330A repair
  97. crackling sound from one channel
  98. Cosmos Valve amplifier
  99. The Vacuum Tube Truth
  100. Inverted Triode SE OTL
  101. Negative feedback problems on ECL82 SE amp.
  102. Cheap tester?
  103. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  104. Fisher SA 1000
  105. Hot Hot Hot
  106. Dynaco PAS-4 manual
  107. amplifier pp with 6p3s
  108. rusty chassis - what to do?
  109. Use 9 pin Aikido PCB kit or buy 8 pin ?
  110. Where to find data sheets?
  111. how to reverse signal for Common Cathode circuit
  112. Audio note M2 power supply resistor value
  113. Are 6DZ7 to Rare to be fun?
  114. 7868 substitutes
  115. Millet Hybrid - stacked buffers
  116. Repairing an old tube raido
  117. 3 way ultimate DIY phonostage match!
  118. wanted sv572-3
  119. General Aikido power supply question
  120. question about beefing up my monoblocks
  121. multichannel tube amp
  122. Who can explain this FFT graph to me
  123. Equivalent Noise Resistance
  124. Any Tube heads near Central coast NSW
  125. Question
  126. Screen Supply For PP Amp
  127. Datasheets: RC coupled amp VS. typical characteristics
  128. How to calculate Tube Preamp output impedance?
  129. What vintage tube books do you own?
  130. re design of a SE tube amplifier
  131. NRI 70 tube chart
  132. Multimeter
  133. fizzy and unstable
  134. Russian spud amp
  135. Silly Question about 807
  136. Help with dared MP-15, please!
  137. Do tube curves tell most of the story?
  138. Sovtek 6B4-G
  139. Ultimate Amplifier
  140. How quiet is dead quiet?
  141. Max B+ for triode-connected KT88
  142. Acrosound Archive
  143. Hail to Vintage Power Transformer & Choke?
  144. 2a3 parafeed
  145. Kimmel mu stage
  146. 4043c
  147. Impedance quandary
  148. 6L6G Amp recommendations
  149. Beefing up the power supply
  150. System distortion and Single Ended Tube Amps
  151. TB3/1000 is alive ! ("European 833A")
  152. Another tube newb
  153. Decoding another recycled power trans
  154. parafeed plate choke calculation
  155. New to tube building / design - Input requested!
  156. tube preamp with hum??emf
  157. Which tubes for this OPT?
  158. Ping salas re: LED baising
  159. Model train throttles?
  160. Microphonics that go away by themselves
  161. Variable cathode/plate resistors?
  162. 2 newbe questions
  163. 12B4A + LL1671 Linestage
  164. Distortion Analysis using an Oscilloscope
  165. Western Electric 'Harmonic Equalizer'
  166. Tube Newb McIntosh questions.
  167. AH NJoe TJOEB, valve compatibility issue
  168. Tubes: test as New? translation please
  169. new s5 tube amp kit
  170. Stereo BusBar OK?
  171. Fi Primer 807
  172. Calculating power output in the design stage?
  173. Overdriving the grid of a triode
  174. Newb Questions RE: HS caps & B+ Bias
  175. mercury vapor... i love it!!!
  176. Interstage Couple 300B 811-3 SE amp
  177. PCB Trace Clearance for High Voltage
  178. youtube - tubes!
  179. Noob to the Leak ST20
  180. Unconditional stability, phase shift and feedback
  181. An almost DIY 6DJ8 Linestage
  182. Is Acrosound T-330 really good?
  183. My 1st amp just came to life......pics
  184. Russian tube power amp repair
  185. Unity coupled circuit amplifier.
  186. info about lectron JH50
  187. G.E. 6CA7/EL34 - any good?
  188. SS Preamp and Tube Poweramp
  189. Values for OTL totem pole (cathode followers)
  190. 12au7 preamp will not work
  191. A Slew of Beginer Tube Questions
  192. calculating b+ voltage drop, decoupling?
  193. Another SET 2A3 in the world
  194. Help needed with Lectron JH 50 Amp
  195. Audio Note M2 regulator schematic
  196. 300b
  197. Three Simple Questions!!
  198. Edcor Transformers
  199. LTP with CCS - IM Distortion
  200. Strange 45 behaviour - help
  201. I have $250 to spend..what amp should I build?
  202. CCs plate load for mu follower 6sn7
  203. Best use of S-265 opt?
  204. what would be a reasonable price to pay for this tube ?
  205. Distortion Neutralizer for Odd Harmonics
  206. 6H13C preamp
  207. Testing tube for noise
  208. Optimal Umbilical Runs and Connections
  209. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  210. Non-simultaneous Pentode anode/G2 turn-on
  211. ArnoldC's IT coupled 300B amplifier
  212. Ultralinear pse
  213. Using 0D3's for DC regulation in Aikido
  214. ECC40 preamp
  215. Newbie PS questions
  216. parallel EL84 transconductance amp
  217. Quad II Modified by Glenn Croft
  218. Wanted:Power transformers for Welborne DRD 300B amp
  219. Just finished testing my first 832A amp
  220. Russian Transformer cores
  221. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  222. 15E and plate curves
  223. Replacing 6N1P' s with 6922s or 7308s
  224. the "cheapo"
  225. OPT Quality Factors?
  226. 50CA10 pushpull amp
  227. New Hammonds?
  228. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  229. Voltage Gain Confusion!!
  230. is this ok to build???
  231. It's raining 10M45's!
  232. Grid Leak Bias on small signal pentodes.
  233. Equalizing + & - output voltage?
  234. Help with ECF80 spice model
  235. Would a Williamson sound better with a CCS tail in the driver?
  236. low ac voltage question
  237. Aikido/SMPS/SKA SS
  238. values of ground(?) coupling caps in Aikido
  239. Please explain grid stoppers..
  240. Appropriate Iron for 211 Triode SE
  241. Help with Aikido B+ Bias layout
  242. 12v 6BF7 preamp design tested
  243. power supply PLEASE HELP
  244. tube amp
  245. 6AU8A, and assorted questions
  246. PPP OPT clarification
  247. ECC83/12AX7 Tube test query
  248. 0D3 shunt regulator for single ended duty
  249. power supply PLEASE HELP
  250. beefy choke -- please help

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