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  1. Best Sounding Phono Input Tube
  2. We417+300b
  3. class-A PP amplifier with 2x 845 question
  4. Kismet-300B-amp
  5. Will differential share the same THD characteristics as SE, if same triode is used?
  6. The biggest bunch of tubes ever seen
  7. DHT AC Filament Noise
  8. augmented cathode follower?
  9. Tube amp find in old theater
  10. Is there a better amp kit????
  11. figuring amplification factor of a tube
  12. SE 6l6
  13. Need help
  14. Dynaco (Dynaclone) PA060 transformer
  15. Switching power supply for tube filaments possible???
  16. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  17. DN2540/2535 fun and games
  18. 6P3S SE amp requesting
  19. Newbie needs Magnavox console troubleshooting tips
  20. 6bBYGA x2 as full-wave rectifier?
  21. Digital volume/tone control in Tube amps
  22. plotting load-line for OTL amp?
  23. New SE 6P15P project
  24. New Production Shuguang Type 50 Tubes
  25. Running different tubes
  26. Fairchild 260 rebuild questions
  27. Filament Voltage vs. Hum
  28. drawing a loadline from schematics
  29. Know this tube? 10J12C or 10X12C ...
  30. Precision Fidelity - C7 Mods...help Wanted!
  31. stupid newbie: what is this transformer???
  32. Anyone else having problems with Mercury Magnetics transformers?
  33. EF86-EL84: too much gain!
  34. Balanced Power
  35. GTA 300B SE Mk.II Power Transformer
  36. Tube Shields
  37. Some basic questions about s-5 amp kit mods
  38. Novice Voltage Regulator Question
  39. The Critical Ear
  40. Tube matching service - As found on Craigslist
  41. 6j1 question
  42. Duosonic 40's era record player
  43. 6bl8 el84 nfb question
  44. 6T9 push pull
  45. 12AY7 circuit?
  46. E810F: RIAA circuits
  47. need EL519/6KG6 spice 3f4 model
  48. enough gain for James tone stack
  49. Anyone recognise this amp?
  50. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  51. matched tubes?
  52. List of current production types
  53. Soundcard greater than 24-bit
  54. Replacing Valves Leak Stereo 20
  55. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  56. I Damaged my Amp?
  57. EL84 Triode PP Design
  58. pentode with grid AND cathode tied to gnd?
  59. What d'you put in the PSU chassis, and what in the circuit chassis?
  60. a real no-brainer question about 1/2 tubes
  61. 813 power supply question
  62. ESR of motor-run caps?
  63. OPT-102 - data? (Audio Electronic Supply)
  64. Help me out with a circuit design
  65. Partial Feedback EL84PP - Not quite as expected (yet)
  66. Preamp suggestions - Help a hack have some fun
  67. 6GK6 Ultralinear
  68. Vacuum Rectifier Question
  69. LM4702 meets up with 6550's
  70. 6bx7gt envelope temperature
  71. Counterpoint SA 3 schematic
  72. Tubes measured in microhms = mA..?
  73. Checking ARC SP9
  74. 6J11 Datasheet anyone?
  75. Help cleaning tube pins
  76. Best way to use a PAIR of 6SL7ís to drive a 300B?
  77. preamp cathode bypass cap benefits
  78. EF184 or (EC)L82 radio amplifier?!
  79. 5687 for Aikido
  80. Pre Amplifier Out Sockets
  81. Recommended output valves for this transformer
  82. power tubes and learning SET design
  83. Phono pre-amp Question
  84. TVA-1 cathode resistor value
  85. need power tranformer ideas
  86. Cary Cad-300b Se
  87. newbie question about 7591 cathode bias
  88. 5814 Raytheon Windmill Getter late 50's
  89. Fundamentals of tube amp design
  90. 7868 amp sounds good but low volume
  91. How does class AB2 sound?
  92. 6sn7 brand
  93. Might speaker filters be in the wrong place?
  94. Problem: attenuation after cathodyne and CF
  95. LED bias and differential pairs
  96. Kimmel Mu stage summary sheet
  97. Tube buffer for car audio
  98. Practical PSE thinking.
  99. I need help on a Simple guitar/vocal pre amp.
  100. Kr300bxls
  101. Biggest noval dual triode?
  102. 2 amps with 1 set of speakers?
  103. tubeamp kits
  104. Tripletone amplifier
  105. Tube curves tracer
  106. Help with Shunt Regulation and Noise
  107. Plug 'N' Play B+ time delay
  108. Hot Rod "Bronco" project/TRANSFORMERS
  109. Precision PA conversion help needed
  110. Caps in Voltage divider Heater Bias ?
  111. Looking for Melos triode 200+ schematics
  112. ETF07 brief summary
  113. No response from Vacuumtubes.net
  114. dynakit pam selenium rectifier replacement help
  115. Adjustable Fixed Grid Bias
  116. Best output transformer for 300B
  117. Transconductance of E88CC,6922,6N23P
  118. Finding The Root Of The Problem
  119. Beard P35
  120. purple tube heaters...
  121. Which 12AU7 and 6V6GTs?
  122. 6f2 - 6n1???
  123. Help with Schematic
  124. Class A Push Pull with 6L6GC
  125. EL84 driver tube, with less than 5mA current
  126. Sleeping Sickness
  127. 50L6-GT or 6W6-GT
  128. Help ID this transformer
  129. Tube dropping - Help?
  130. For anyone running a K-502 with a FR driver
  131. Active crossover
  132. General guidence building guitar amp
  133. Pounds, Shillings and Pence
  134. Trying to learn something, against my better judgment
  135. Battery grid bias to fixed bias in Toccato?
  136. PLS take a look!
  137. Use for 5K:8 PP OPT?
  138. Low amp Impedance input and high dac output
  139. The Magic of a Name
  140. which edition of Morgan Jones' books?
  141. altec 1530 schematic
  142. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  143. 6HB6/6HA& Spud?
  144. schematic diagram golden tube se40 for repair! help
  145. Reliable B+ PSU for pro preamp
  146. Help me find some info please
  147. Some tube radios
  148. Electro Harmonix 300b...shorting problems?
  149. Aikido linestage tube choice? (again)
  150. Teeco 1220??
  151. magic smoke pilot aa903
  152. PP bias balance pot
  153. Jolida JD 502A
  154. Cathode Bias for SimpleSE
  155. TRemPre malfunctioning
  156. HV benchtop power supply, help on opamp setup
  157. Transcendar Output Transformers ST70
  158. Unofficial Tube Market Survey
  159. testing 6DJ8s
  160. 6L6 AB PPP stage; does it make sense?
  161. 7868 tubes - replace with 6L6's?
  162. Vintage Amp...too much gain on CD
  163. ETF07 - Last possibility to join
  164. Tube 7403
  165. New SET: JE labs simple 45 or tubelab SE?
  166. Melos triode and computer as source: BUZZ BUZZ BUZZ
  167. 6SN7 Cascoded CCS
  168. 7591 se tube amp?
  169. Sovtek 5881WXT/Quad II
  170. Adding more capacitors to an AMP
  171. Tube Characteristics
  172. Tube guilt
  173. KT88 or 6550
  174. Single ended OTL Transcendent
  175. K-12 kit, buzz in R channel
  176. Hickok 752A repair
  177. my new tube line stage
  178. Audio Innovations Series 200 Phono Stage
  179. is it correct to calculate OTL?
  180. Late Halloween Cartoon
  181. on/off/on switch for bright/bold?
  182. Another CCS for tubes/valves: PCBs
  183. Customdaveus
  184. newbie questions on Bogen M330A repair
  185. crackling sound from one channel
  186. Cosmos Valve amplifier
  187. The Vacuum Tube Truth
  188. Inverted Triode SE OTL
  189. Negative feedback problems on ECL82 SE amp.
  190. Cheap tester?
  191. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  192. Fisher SA 1000
  193. Hot Hot Hot
  194. Dynaco PAS-4 manual
  195. amplifier pp with 6p3s
  196. rusty chassis - what to do?
  197. Use 9 pin Aikido PCB kit or buy 8 pin ?
  198. Where to find data sheets?
  199. how to reverse signal for Common Cathode circuit
  200. Audio note M2 power supply resistor value
  201. Are 6DZ7 to Rare to be fun?
  202. 7868 substitutes
  203. Millet Hybrid - stacked buffers
  204. Repairing an old tube raido
  205. 3 way ultimate DIY phonostage match!
  206. wanted sv572-3
  207. General Aikido power supply question
  208. question about beefing up my monoblocks
  209. multichannel tube amp
  210. Who can explain this FFT graph to me
  211. Equivalent Noise Resistance
  212. Any Tube heads near Central coast NSW
  213. Question
  214. Screen Supply For PP Amp
  215. Datasheets: RC coupled amp VS. typical characteristics
  216. How to calculate Tube Preamp output impedance?
  217. What vintage tube books do you own?
  218. re design of a SE tube amplifier
  219. NRI 70 tube chart
  220. Multimeter
  221. fizzy and unstable
  222. Russian spud amp
  223. Silly Question about 807
  224. Help with dared MP-15, please!
  225. tube tester B&k 606 Transformer brun need help
  226. Do tube curves tell most of the story?
  227. Sovtek 6B4-G
  228. Ultimate Amplifier
  229. How quiet is dead quiet?
  230. Max B+ for triode-connected KT88
  231. Acrosound Archive
  232. Hail to Vintage Power Transformer & Choke?
  233. 2a3 parafeed
  234. Kimmel mu stage
  235. 4043c
  236. Impedance quandary
  237. 6L6G Amp recommendations
  238. Beefing up the power supply
  239. System distortion and Single Ended Tube Amps
  240. TB3/1000 is alive ! ("European 833A")
  241. Another tube newb
  242. Decoding another recycled power trans
  243. parafeed plate choke calculation
  244. New to tube building / design - Input requested!
  245. tube preamp with hum??emf
  246. Which tubes for this OPT?
  247. Vacuum tube tester, do you own one?
  248. Ping salas re: LED baising
  249. Model train throttles?
  250. Microphonics that go away by themselves

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