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  1. figuring amplification factor of a tube
  2. SE 6l6
  3. Need help
  4. Dynaco (Dynaclone) PA060 transformer
  5. Switching power supply for tube filaments possible???
  6. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  7. DN2540/2535 fun and games
  8. 6P3S SE amp requesting
  9. Newbie needs Magnavox console troubleshooting tips
  10. 6bBYGA x2 as full-wave rectifier?
  11. Digital volume/tone control in Tube amps
  12. plotting load-line for OTL amp?
  13. New SE 6P15P project
  14. New Production Shuguang Type 50 Tubes
  15. Running different tubes
  16. Fairchild 260 rebuild questions
  17. Filament Voltage vs. Hum
  18. drawing a loadline from schematics
  19. Know this tube? 10J12C or 10X12C ...
  20. Precision Fidelity - C7 Mods...help Wanted!
  21. stupid newbie: what is this transformer???
  22. Anyone else having problems with Mercury Magnetics transformers?
  23. EF86-EL84: too much gain!
  24. Balanced Power
  25. GTA 300B SE Mk.II Power Transformer
  26. Tube Shields
  27. Some basic questions about s-5 amp kit mods
  28. Novice Voltage Regulator Question
  29. The Critical Ear
  30. Tube matching service - As found on Craigslist
  31. 6j1 question
  32. Duosonic 40's era record player
  33. 6bl8 el84 nfb question
  34. 6T9 push pull
  35. 12AY7 circuit?
  36. E810F: RIAA circuits
  37. need EL519/6KG6 spice 3f4 model
  38. Anyone recognise this amp?
  39. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  40. matched tubes?
  41. List of current production types
  42. Replacing Valves Leak Stereo 20
  43. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  44. I Damaged my Amp?
  45. EL84 Triode PP Design
  46. pentode with grid AND cathode tied to gnd?
  47. What d'you put in the PSU chassis, and what in the circuit chassis?
  48. a real no-brainer question about 1/2 tubes
  49. 813 power supply question
  50. OPT-102 - data? (Audio Electronic Supply)
  51. Help me out with a circuit design
  52. Partial Feedback EL84PP - Not quite as expected (yet)
  53. Preamp suggestions - Help a hack have some fun
  54. 6GK6 Ultralinear
  55. Vacuum Rectifier Question
  56. LM4702 meets up with 6550's
  57. 6bx7gt envelope temperature
  58. Counterpoint SA 3 schematic
  59. Tubes measured in microhms = mA..?
  60. Checking ARC SP9
  61. 6J11 Datasheet anyone?
  62. Help cleaning tube pins
  63. Best way to use a PAIR of 6SL7ís to drive a 300B?
  64. preamp cathode bypass cap benefits
  65. EF184 or (EC)L82 radio amplifier?!
  66. 5687 for Aikido
  67. Pre Amplifier Out Sockets
  68. Recommended output valves for this transformer
  69. power tubes and learning SET design
  70. Phono pre-amp Question
  71. TVA-1 cathode resistor value
  72. need power tranformer ideas
  73. Cary Cad-300b Se
  74. newbie question about 7591 cathode bias
  75. 5814 Raytheon Windmill Getter late 50's
  76. Fundamentals of tube amp design
  77. 7868 amp sounds good but low volume
  78. How does class AB2 sound?
  79. 6sn7 brand
  80. Might speaker filters be in the wrong place?
  81. Problem: attenuation after cathodyne and CF
  82. LED bias and differential pairs
  83. Kimmel Mu stage summary sheet
  84. Tube buffer for car audio
  85. Practical PSE thinking.
  86. Kr300bxls
  87. Biggest noval dual triode?
  88. 2 amps with 1 set of speakers?
  89. tubeamp kits
  90. Tripletone amplifier
  91. Help with Shunt Regulation and Noise
  92. Plug 'N' Play B+ time delay
  93. Precision PA conversion help needed
  94. Caps in Voltage divider Heater Bias ?
  95. Looking for Melos triode 200+ schematics
  96. ETF07 brief summary
  97. No response from Vacuumtubes.net
  98. dynakit pam selenium rectifier replacement help
  99. Adjustable Fixed Grid Bias
  100. Best output transformer for 300B
  101. Transconductance of E88CC,6922,6N23P
  102. Finding The Root Of The Problem
  103. Beard P35
  104. purple tube heaters...
  105. Which 12AU7 and 6V6GTs?
  106. 6f2 - 6n1???
  107. Help with Schematic
  108. Class A Push Pull with 6L6GC
  109. EL84 driver tube, with less than 5mA current
  110. Sleeping Sickness
  111. 50L6-GT or 6W6-GT
  112. Help ID this transformer
  113. Tube dropping - Help?
  114. For anyone running a K-502 with a FR driver
  115. Active crossover
  116. Pounds, Shillings and Pence
  117. Trying to learn something, against my better judgment
  118. Battery grid bias to fixed bias in Toccato?
  119. PLS take a look!
  120. Use for 5K:8 PP OPT?
  121. Low amp Impedance input and high dac output
  122. The Magic of a Name
  123. which edition of Morgan Jones' books?
  124. altec 1530 schematic
  125. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  126. 6HB6/6HA& Spud?
  127. schematic diagram golden tube se40 for repair! help
  128. Reliable B+ PSU for pro preamp
  129. Help me find some info please
  130. Some tube radios
  131. Electro Harmonix 300b...shorting problems?
  132. Aikido linestage tube choice? (again)
  133. Teeco 1220??
  134. magic smoke pilot aa903
  135. PP bias balance pot
  136. Jolida JD 502A
  137. Cathode Bias for SimpleSE
  138. TRemPre malfunctioning
  139. HV benchtop power supply, help on opamp setup
  140. Transcendar Output Transformers ST70
  141. Unofficial Tube Market Survey
  142. testing 6DJ8s
  143. 6L6 AB PPP stage; does it make sense?
  144. 7868 tubes - replace with 6L6's?
  145. Vintage Amp...too much gain on CD
  146. ETF07 - Last possibility to join
  147. Tube 7403
  148. Melos triode and computer as source: BUZZ BUZZ BUZZ
  149. 6SN7 Cascoded CCS
  150. 7591 se tube amp?
  151. Sovtek 5881WXT/Quad II
  152. Adding more capacitors to an AMP
  153. Tube Characteristics
  154. Tube guilt
  155. KT88 or 6550
  156. Single ended OTL Transcendent
  157. K-12 kit, buzz in R channel
  158. my new tube line stage
  159. Audio Innovations Series 200 Phono Stage
  160. is it correct to calculate OTL?
  161. Late Halloween Cartoon
  162. on/off/on switch for bright/bold?
  163. Another CCS for tubes/valves: PCBs
  164. Customdaveus
  165. newbie questions on Bogen M330A repair
  166. crackling sound from one channel
  167. Cosmos Valve amplifier
  168. The Vacuum Tube Truth
  169. Inverted Triode SE OTL
  170. Negative feedback problems on ECL82 SE amp.
  171. Cheap tester?
  172. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  173. Fisher SA 1000
  174. Hot Hot Hot
  175. Dynaco PAS-4 manual
  176. amplifier pp with 6p3s
  177. rusty chassis - what to do?
  178. Use 9 pin Aikido PCB kit or buy 8 pin ?
  179. Where to find data sheets?
  180. how to reverse signal for Common Cathode circuit
  181. Audio note M2 power supply resistor value
  182. Are 6DZ7 to Rare to be fun?
  183. 7868 substitutes
  184. Millet Hybrid - stacked buffers
  185. Repairing an old tube raido
  186. 3 way ultimate DIY phonostage match!
  187. wanted sv572-3
  188. General Aikido power supply question
  189. question about beefing up my monoblocks
  190. multichannel tube amp
  191. Who can explain this FFT graph to me
  192. Equivalent Noise Resistance
  193. Any Tube heads near Central coast NSW
  194. Question
  195. Screen Supply For PP Amp
  196. Datasheets: RC coupled amp VS. typical characteristics
  197. How to calculate Tube Preamp output impedance?
  198. What vintage tube books do you own?
  199. re design of a SE tube amplifier
  200. NRI 70 tube chart
  201. Multimeter
  202. fizzy and unstable
  203. Russian spud amp
  204. Silly Question about 807
  205. Help with dared MP-15, please!
  206. Do tube curves tell most of the story?
  207. Sovtek 6B4-G
  208. Ultimate Amplifier
  209. How quiet is dead quiet?
  210. Max B+ for triode-connected KT88
  211. Acrosound Archive
  212. Hail to Vintage Power Transformer & Choke?
  213. 2a3 parafeed
  214. Kimmel mu stage
  215. 4043c
  216. Impedance quandary
  217. 6L6G Amp recommendations
  218. Beefing up the power supply
  219. System distortion and Single Ended Tube Amps
  220. TB3/1000 is alive ! ("European 833A")
  221. Another tube newb
  222. Decoding another recycled power trans
  223. parafeed plate choke calculation
  224. New to tube building / design - Input requested!
  225. tube preamp with hum??emf
  226. Which tubes for this OPT?
  227. Ping salas re: LED baising
  228. Model train throttles?
  229. Microphonics that go away by themselves
  230. Variable cathode/plate resistors?
  231. 2 newbe questions
  232. 12B4A + LL1671 Linestage
  233. Distortion Analysis using an Oscilloscope
  234. Western Electric 'Harmonic Equalizer'
  235. Tube Newb McIntosh questions.
  236. AH NJoe TJOEB, valve compatibility issue
  237. Tubes: test as New? translation please
  238. new s5 tube amp kit
  239. Stereo BusBar OK?
  240. Fi Primer 807
  241. Calculating power output in the design stage?
  242. Overdriving the grid of a triode
  243. Newb Questions RE: HS caps & B+ Bias
  244. mercury vapor... i love it!!!
  245. Interstage Couple 300B 811-3 SE amp
  246. PCB Trace Clearance for High Voltage
  247. youtube - tubes!
  248. Noob to the Leak ST20
  249. Unconditional stability, phase shift and feedback
  250. An almost DIY 6DJ8 Linestage

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