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  1. newbie question about 7591 cathode bias
  2. 5814 Raytheon Windmill Getter late 50's
  3. Fundamentals of tube amp design
  4. 7868 amp sounds good but low volume
  5. How does class AB2 sound?
  6. 6sn7 brand
  7. Might speaker filters be in the wrong place?
  8. Problem: attenuation after cathodyne and CF
  9. LED bias and differential pairs
  10. Kimmel Mu stage summary sheet
  11. Tube buffer for car audio
  12. Practical PSE thinking.
  13. I need help on a Simple guitar/vocal pre amp.
  14. Kr300bxls
  15. Biggest noval dual triode?
  16. 2 amps with 1 set of speakers?
  17. tubeamp kits
  18. Tripletone amplifier
  19. Tube curves tracer
  20. Help with Shunt Regulation and Noise
  21. Plug 'N' Play B+ time delay
  22. Hot Rod "Bronco" project/TRANSFORMERS
  23. Precision PA conversion help needed
  24. Caps in Voltage divider Heater Bias ?
  25. Looking for Melos triode 200+ schematics
  26. ETF07 brief summary
  27. No response from Vacuumtubes.net
  28. dynakit pam selenium rectifier replacement help
  29. Adjustable Fixed Grid Bias
  30. Best output transformer for 300B
  31. Transconductance of E88CC,6922,6N23P
  32. Finding The Root Of The Problem
  33. Beard P35
  34. purple tube heaters...
  35. Which 12AU7 and 6V6GTs?
  36. 6f2 - 6n1???
  37. Help with Schematic
  38. Class A Push Pull with 6L6GC
  39. EL84 driver tube, with less than 5mA current
  40. Sleeping Sickness
  41. 50L6-GT or 6W6-GT
  42. Help ID this transformer
  43. Tube dropping - Help?
  44. For anyone running a K-502 with a FR driver
  45. Active crossover
  46. General guidence building guitar amp
  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. New SET: JE labs simple 45 or tubelab SE?
  80. Melos triode and computer as source: BUZZ BUZZ BUZZ
  81. 6SN7 Cascoded CCS
  82. 7591 se tube amp?
  83. Sovtek 5881WXT/Quad II
  84. Adding more capacitors to an AMP
  85. Tube Characteristics
  86. Tube guilt
  87. KT88 or 6550
  88. Single ended OTL Transcendent
  89. K-12 kit, buzz in R channel
  90. Hickok 752A repair
  91. my new tube line stage
  92. Audio Innovations Series 200 Phono Stage
  93. is it correct to calculate OTL?
  94. Late Halloween Cartoon
  95. on/off/on switch for bright/bold?
  96. Another CCS for tubes/valves: PCBs
  97. Customdaveus
  98. newbie questions on Bogen M330A repair
  99. crackling sound from one channel
  100. Cosmos Valve amplifier
  101. The Vacuum Tube Truth
  102. Inverted Triode SE OTL
  103. Negative feedback problems on ECL82 SE amp.
  104. Cheap tester?
  105. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  106. Fisher SA 1000
  107. Hot Hot Hot
  108. Dynaco PAS-4 manual
  109. amplifier pp with 6p3s
  110. rusty chassis - what to do?
  111. Use 9 pin Aikido PCB kit or buy 8 pin ?
  112. Where to find data sheets?
  113. how to reverse signal for Common Cathode circuit
  114. Audio note M2 power supply resistor value
  115. Are 6DZ7 to Rare to be fun?
  116. 7868 substitutes
  117. Millet Hybrid - stacked buffers
  118. Repairing an old tube raido
  119. 3 way ultimate DIY phonostage match!
  120. wanted sv572-3
  121. General Aikido power supply question
  122. question about beefing up my monoblocks
  123. multichannel tube amp
  124. Who can explain this FFT graph to me
  125. Equivalent Noise Resistance
  126. Any Tube heads near Central coast NSW
  127. Question
  128. Screen Supply For PP Amp
  129. Datasheets: RC coupled amp VS. typical characteristics
  130. How to calculate Tube Preamp output impedance?
  131. What vintage tube books do you own?
  132. re design of a SE tube amplifier
  133. NRI 70 tube chart
  134. Multimeter
  135. fizzy and unstable
  136. Russian spud amp
  137. Silly Question about 807
  138. Help with dared MP-15, please!
  139. tube tester B&k 606 Transformer brun need help
  140. Do tube curves tell most of the story?
  141. Sovtek 6B4-G
  142. Ultimate Amplifier
  143. How quiet is dead quiet?
  144. Max B+ for triode-connected KT88
  145. Acrosound Archive
  146. Hail to Vintage Power Transformer & Choke?
  147. 2a3 parafeed
  148. Kimmel mu stage
  149. 4043c
  150. Impedance quandary
  151. 6L6G Amp recommendations
  152. Beefing up the power supply
  153. System distortion and Single Ended Tube Amps
  154. TB3/1000 is alive ! ("European 833A")
  155. Another tube newb
  156. Decoding another recycled power trans
  157. parafeed plate choke calculation
  158. New to tube building / design - Input requested!
  159. tube preamp with hum??emf
  160. Which tubes for this OPT?
  161. Vacuum tube tester, do you own one?
  162. Ping salas re: LED baising
  163. Model train throttles?
  164. Microphonics that go away by themselves
  165. Variable cathode/plate resistors?
  166. 2 newbe questions
  167. 12B4A + LL1671 Linestage
  168. crate vintage "club 50" schematics needed
  169. Distortion Analysis using an Oscilloscope
  170. Western Electric 'Harmonic Equalizer'
  171. Tube Newb Mc Intosh questions.
  172. AH NJoe TJOEB, valve compatibility issue
  173. Tubes: test as New? translation please
  174. new s5 tube amp kit
  175. Stereo BusBar OK?
  176. Fi Primer 807
  177. Calculating power output in the design stage?
  178. Overdriving the grid of a triode
  179. Newb Questions RE: HS caps & B+ Bias
  180. mercury vapor... i love it!!!
  181. Interstage Couple 300B 811-3 SE amp
  182. PCB Trace Clearance for High Voltage
  183. youtube - tubes!
  184. Noob to the Leak ST20
  185. Unconditional stability, phase shift and feedback
  186. An almost DIY 6DJ8 Linestage
  187. Is Acrosound T-330 really good?
  188. My 1st amp just came to life......pics
  189. Russian tube power amp repair
  190. Unity coupled circuit amplifier.
  191. info about lectron JH50
  192. G.E. 6CA7/EL34 - any good?
  193. black face champ tubes
  194. SS Preamp and Tube Poweramp
  195. Values for OTL totem pole (cathode followers)
  196. 12au7 preamp will not work
  197. A Slew of Beginer Tube Questions
  198. calculating b+ voltage drop, decoupling?
  199. Another SET 2A3 in the world
  200. Help needed with Lectron JH 50 Amp
  201. Audio Note M2 regulator schematic
  202. 300b
  203. Three Simple Questions!!
  204. Edcor Transformers
  205. LTP with CCS - IM Distortion
  206. Strange 45 behaviour - help
  207. I have $250 to spend..what amp should I build?
  208. CCs plate load for mu follower 6sn7
  209. Best use of S-265 opt?
  210. what would be a reasonable price to pay for this tube ?
  211. Distortion Neutralizer for Odd Harmonics
  212. 6H13C preamp
  213. Testing tube for noise
  214. Optimal Umbilical Runs and Connections
  215. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  216. Film capacitors for decoupling
  217. Non-simultaneous Pentode anode/G2 turn-on
  218. ArnoldC's IT coupled 300B amplifier
  219. Ultralinear pse
  220. Using 0D3's for DC regulation in Aikido
  221. ECC40 preamp
  222. Newbie PS questions
  223. Preliminary 12AX7 guitar preamp
  224. Another cap replacement: uF changes..
  225. parallel EL84 transconductance amp
  226. Quad II Modified by Glenn Croft
  227. Wanted:Power transformers for Welborne DRD 300B amp
  228. Just finished testing my first 832A amp
  229. Russian Transformer cores
  230. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  231. 15E and plate curves
  232. Replacing 6N1P' s with 6922s or 7308s
  233. the "cheapo"
  234. OPT Quality Factors?
  235. 50CA10 pushpull amp
  236. New Hammonds?
  237. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  238. Voltage Gain Confusion!!
  239. is this ok to build???
  240. PSUD2 help needed
  241. It's raining 10M45's!
  242. Grid Leak Bias on small signal pentodes.
  243. Equalizing + & - output voltage?
  244. Help with ECF80 spice model
  245. Would a Williamson sound better with a CCS tail in the driver?
  246. low ac voltage question
  247. Aikido/SMPS/SKA SS
  248. values of ground(?) coupling caps in Aikido
  249. Please explain grid stoppers..
  250. Psud2 Help

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