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  1. Counterpoint SA 3 schematic
  2. Tubes measured in microhms = mA..?
  3. Checking ARC SP9
  4. 6J11 Datasheet anyone?
  5. Help cleaning tube pins
  6. Best way to use a PAIR of 6SL7’s to drive a 300B?
  7. preamp cathode bypass cap benefits
  8. EF184 or (EC)L82 radio amplifier?!
  9. 5687 for Aikido
  10. Pre Amplifier Out Sockets
  11. Recommended output valves for this transformer
  12. power tubes and learning SET design
  13. Phono pre-amp Question
  14. TVA-1 cathode resistor value
  15. need power tranformer ideas
  16. Cary Cad-300b Se
  17. newbie question about 7591 cathode bias
  18. 5814 Raytheon Windmill Getter late 50's
  19. Fundamentals of tube amp design
  20. 7868 amp sounds good but low volume
  21. How does class AB2 sound?
  22. 6sn7 brand
  23. Might speaker filters be in the wrong place?
  24. Problem: attenuation after cathodyne and CF
  25. LED bias and differential pairs
  26. Kimmel Mu stage summary sheet
  27. Tube buffer for car audio
  28. Practical PSE thinking.
  29. I need help on a Simple guitar/vocal pre amp.
  30. Kr300bxls
  31. Biggest noval dual triode?
  32. 2 amps with 1 set of speakers?
  33. tubeamp kits
  34. Tripletone amplifier
  35. Tube curves tracer
  36. Help with Shunt Regulation and Noise
  37. Plug 'N' Play B+ time delay
  38. Hot Rod "Bronco" project/TRANSFORMERS
  39. Precision PA conversion help needed
  40. Caps in Voltage divider Heater Bias ?
  41. Looking for Melos triode 200+ schematics
  42. ETF07 brief summary
  43. No response from Vacuumtubes.net
  44. dynakit pam selenium rectifier replacement help
  45. Adjustable Fixed Grid Bias
  46. Best output transformer for 300B
  47. Transconductance of E88CC,6922,6N23P
  48. Finding The Root Of The Problem
  49. Beard P35
  50. purple tube heaters...
  51. Which 12AU7 and 6V6GTs?
  52. 6f2 - 6n1???
  53. Help with Schematic
  54. Class A Push Pull with 6L6GC
  55. EL84 driver tube, with less than 5mA current
  56. Sleeping Sickness
  57. 50L6-GT or 6W6-GT
  58. Help ID this transformer
  59. Tube dropping - Help?
  60. For anyone running a K-502 with a FR driver
  61. Active crossover
  62. General guidence building guitar amp
  63. Pounds, Shillings and Pence
  64. Trying to learn something, against my better judgment
  65. Battery grid bias to fixed bias in Toccato?
  66. PLS take a look!
  67. Use for 5K:8 PP OPT?
  68. Low amp Impedance input and high dac output
  69. The Magic of a Name
  70. which edition of Morgan Jones' books?
  71. altec 1530 schematic
  72. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  73. 6HB6/6HA& Spud?
  74. schematic diagram golden tube se40 for repair! help
  75. Reliable B+ PSU for pro preamp
  76. Help me find some info please
  77. Some tube radios
  78. Electro Harmonix 300b...shorting problems?
  79. Aikido linestage tube choice? (again)
  80. Teeco 1220??
  81. magic smoke pilot aa903
  82. PP bias balance pot
  83. Jolida JD 502A
  84. Cathode Bias for SimpleSE
  85. TRemPre malfunctioning
  86. HV benchtop power supply, help on opamp setup
  87. Transcendar Output Transformers ST70
  88. Unofficial Tube Market Survey
  89. testing 6DJ8s
  90. 6L6 AB PPP stage; does it make sense?
  91. 7868 tubes - replace with 6L6's?
  92. Vintage Amp...too much gain on CD
  93. ETF07 - Last possibility to join
  94. Tube 7403
  95. New SET: JE labs simple 45 or tubelab SE?
  96. Melos triode and computer as source: BUZZ BUZZ BUZZ
  97. 6SN7 Cascoded CCS
  98. 7591 se tube amp?
  99. Sovtek 5881WXT/Quad II
  100. Adding more capacitors to an AMP
  101. Tube Characteristics
  102. Tube guilt
  103. KT88 or 6550
  104. Single ended OTL Transcendent
  105. K-12 kit, buzz in R channel
  106. Hickok 752A repair
  107. my new tube line stage
  108. Audio Innovations Series 200 Phono Stage
  109. is it correct to calculate OTL?
  110. Late Halloween Cartoon
  111. on/off/on switch for bright/bold?
  112. Another CCS for tubes/valves: PCBs
  113. Customdaveus
  114. newbie questions on Bogen M330A repair
  115. crackling sound from one channel
  116. Cosmos Valve amplifier
  117. The Vacuum Tube Truth
  118. Inverted Triode SE OTL
  119. Negative feedback problems on ECL82 SE amp.
  120. Cheap tester?
  121. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  122. Fisher SA 1000
  123. Hot Hot Hot
  124. Dynaco PAS-4 manual
  125. amplifier pp with 6p3s
  126. rusty chassis - what to do?
  127. Use 9 pin Aikido PCB kit or buy 8 pin ?
  128. Where to find data sheets?
  129. how to reverse signal for Common Cathode circuit
  130. Audio note M2 power supply resistor value
  131. Are 6DZ7 to Rare to be fun?
  132. 7868 substitutes
  133. Millet Hybrid - stacked buffers
  134. Repairing an old tube raido
  135. 3 way ultimate DIY phonostage match!
  136. wanted sv572-3
  137. General Aikido power supply question
  138. question about beefing up my monoblocks
  139. multichannel tube amp
  140. Who can explain this FFT graph to me
  141. Equivalent Noise Resistance
  142. Any Tube heads near Central coast NSW
  143. Question
  144. Screen Supply For PP Amp
  145. Datasheets: RC coupled amp VS. typical characteristics
  146. How to calculate Tube Preamp output impedance?
  147. What vintage tube books do you own?
  148. re design of a SE tube amplifier
  149. NRI 70 tube chart
  150. Multimeter
  151. fizzy and unstable
  152. Russian spud amp
  153. Silly Question about 807
  154. Help with dared MP-15, please!
  155. tube tester B&k 606 Transformer brun need help
  156. Do tube curves tell most of the story?
  157. Sovtek 6B4-G
  158. Ultimate Amplifier
  159. How quiet is dead quiet?
  160. Max B+ for triode-connected KT88
  161. Acrosound Archive
  162. Hail to Vintage Power Transformer & Choke?
  163. 2a3 parafeed
  164. Kimmel mu stage
  165. 4043c
  166. Impedance quandary
  167. 6L6G Amp recommendations
  168. Beefing up the power supply
  169. System distortion and Single Ended Tube Amps
  170. TB3/1000 is alive ! ("European 833A")
  171. Another tube newb
  172. Decoding another recycled power trans
  173. parafeed plate choke calculation
  174. New to tube building / design - Input requested!
  175. tube preamp with hum??emf
  176. Which tubes for this OPT?
  177. Vacuum tube tester, do you own one?
  178. Ping salas re: LED baising
  179. Model train throttles?
  180. Microphonics that go away by themselves
  181. Variable cathode/plate resistors?
  182. 2 newbe questions
  183. 12B4A + LL1671 Linestage
  184. crate vintage "club 50" schematics needed
  185. Distortion Analysis using an Oscilloscope
  186. Western Electric 'Harmonic Equalizer'
  187. Tube Newb Mc Intosh questions.
  188. AH NJoe TJOEB, valve compatibility issue
  189. Tubes: test as New? translation please
  190. new s5 tube amp kit
  191. Stereo BusBar OK?
  192. Fi Primer 807
  193. Calculating power output in the design stage?
  194. Overdriving the grid of a triode
  195. Newb Questions RE: HS caps & B+ Bias
  196. mercury vapor... i love it!!!
  197. Interstage Couple 300B 811-3 SE amp
  198. PCB Trace Clearance for High Voltage
  199. youtube - tubes!
  200. Noob to the Leak ST20
  201. Unconditional stability, phase shift and feedback
  202. An almost DIY 6DJ8 Linestage
  203. Is Acrosound T-330 really good?
  204. My 1st amp just came to life......pics
  205. Russian tube power amp repair
  206. Unity coupled circuit amplifier.
  207. info about lectron JH50
  208. G.E. 6CA7/EL34 - any good?
  209. black face champ tubes
  210. SS Preamp and Tube Poweramp
  211. Values for OTL totem pole (cathode followers)
  212. 12au7 preamp will not work
  213. A Slew of Beginer Tube Questions
  214. calculating b+ voltage drop, decoupling?
  215. Another SET 2A3 in the world
  216. Help needed with Lectron JH 50 Amp
  217. Audio Note M2 regulator schematic
  218. 300b
  219. Three Simple Questions!!
  220. Edcor Transformers
  221. LTP with CCS - IM Distortion
  222. Strange 45 behaviour - help
  223. I have $250 to spend..what amp should I build?
  224. CCs plate load for mu follower 6sn7
  225. Best use of S-265 opt?
  226. what would be a reasonable price to pay for this tube ?
  227. Distortion Neutralizer for Odd Harmonics
  228. 6H13C preamp
  229. Testing tube for noise
  230. Optimal Umbilical Runs and Connections
  231. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  232. Film capacitors for decoupling
  233. Non-simultaneous Pentode anode/G2 turn-on
  234. ArnoldC's IT coupled 300B amplifier
  235. Ultralinear pse
  236. Using 0D3's for DC regulation in Aikido
  237. ECC40 preamp
  238. Newbie PS questions
  239. Preliminary 12AX7 guitar preamp
  240. Another cap replacement: uF changes..
  241. parallel EL84 transconductance amp
  242. Quad II Modified by Glenn Croft
  243. Wanted:Power transformers for Welborne DRD 300B amp
  244. Just finished testing my first 832A amp
  245. Russian Transformer cores
  246. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  247. 15E and plate curves
  248. Replacing 6N1P' s with 6922s or 7308s
  249. the "cheapo"
  250. OPT Quality Factors?