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  1. converting UL in triode
  2. Beyer Dynamic BV35570
  3. Lundahl LL1527 phase-splitter
  4. Morgan Jones HPA ...strange startup behaviour
  5. Best Sounding Phono Input Tube
  6. We417+300b
  7. class-A PP amplifier with 2x 845 question
  8. Kismet-300B-amp
  9. Will differential share the same THD characteristics as SE, if same triode is used?
  10. The biggest bunch of tubes ever seen
  11. DHT AC Filament Noise
  12. augmented cathode follower?
  13. Tube amp find in old theater
  14. Is there a better amp kit????
  15. figuring amplification factor of a tube
  16. SE 6l6
  17. Need help
  18. Dynaco (Dynaclone) PA060 transformer
  19. Switching power supply for tube filaments possible???
  20. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  21. DN2540/2535 fun and games
  22. 6P3S SE amp requesting
  23. Newbie needs Magnavox console troubleshooting tips
  24. 6bBYGA x2 as full-wave rectifier?
  25. Digital volume/tone control in Tube amps
  26. plotting load-line for OTL amp?
  27. New SE 6P15P project
  28. New Production Shuguang Type 50 Tubes
  29. Running different tubes
  30. Fairchild 260 rebuild questions
  31. Filament Voltage vs. Hum
  32. drawing a loadline from schematics
  33. Know this tube? 10J12C or 10X12C ...
  34. Precision Fidelity - C7 Mods...help Wanted!
  35. stupid newbie: what is this transformer???
  36. Anyone else having problems with Mercury Magnetics transformers?
  37. EF86-EL84: too much gain!
  38. Balanced Power
  39. GTA 300B SE Mk.II Power Transformer
  40. Tube Shields
  41. Some basic questions about s-5 amp kit mods
  42. Novice Voltage Regulator Question
  43. The Critical Ear
  44. Tube matching service - As found on Craigslist
  45. 6j1 question
  46. Duosonic 40's era record player
  47. 6bl8 el84 nfb question
  48. 6T9 push pull
  49. 12AY7 circuit?
  50. E810F: RIAA circuits
  51. need EL519/6KG6 spice 3f4 model
  52. enough gain for James tone stack
  53. Anyone recognise this amp?
  54. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  55. matched tubes?
  56. List of current production types
  57. Soundcard greater than 24-bit
  58. Replacing Valves Leak Stereo 20
  59. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  60. I Damaged my Amp?
  61. EL84 Triode PP Design
  62. pentode with grid AND cathode tied to gnd?
  63. What d'you put in the PSU chassis, and what in the circuit chassis?
  64. a real no-brainer question about 1/2 tubes
  65. 813 power supply question
  66. ESR of motor-run caps?
  67. OPT-102 - data? (Audio Electronic Supply)
  68. Help me out with a circuit design
  69. Partial Feedback EL84PP - Not quite as expected (yet)
  70. Preamp suggestions - Help a hack have some fun
  71. 6GK6 Ultralinear
  72. Vacuum Rectifier Question
  73. LM4702 meets up with 6550's
  74. 6bx7gt envelope temperature
  75. Counterpoint SA 3 schematic
  76. Tubes measured in microhms = mA..?
  77. Checking ARC SP9
  78. 6J11 Datasheet anyone?
  79. Help cleaning tube pins
  80. Best way to use a PAIR of 6SL7ís to drive a 300B?
  81. preamp cathode bypass cap benefits
  82. EF184 or (EC)L82 radio amplifier?!
  83. 5687 for Aikido
  84. Pre Amplifier Out Sockets
  85. Recommended output valves for this transformer
  86. power tubes and learning SET design
  87. Phono pre-amp Question
  88. TVA-1 cathode resistor value
  89. need power tranformer ideas
  90. Cary Cad-300b Se
  91. newbie question about 7591 cathode bias
  92. 5814 Raytheon Windmill Getter late 50's
  93. Fundamentals of tube amp design
  94. 7868 amp sounds good but low volume
  95. How does class AB2 sound?
  96. 6sn7 brand
  97. Might speaker filters be in the wrong place?
  98. Problem: attenuation after cathodyne and CF
  99. LED bias and differential pairs
  100. Kimmel Mu stage summary sheet
  101. Tube buffer for car audio
  102. Practical PSE thinking.
  103. I need help on a Simple guitar/vocal pre amp.
  104. Kr300bxls
  105. Biggest noval dual triode?
  106. 2 amps with 1 set of speakers?
  107. tubeamp kits
  108. Tripletone amplifier
  109. Tube curves tracer
  110. Help with Shunt Regulation and Noise
  111. Plug 'N' Play B+ time delay
  112. Hot Rod "Bronco" project/TRANSFORMERS
  113. Precision PA conversion help needed
  114. Caps in Voltage divider Heater Bias ?
  115. Looking for Melos triode 200+ schematics
  116. ETF07 brief summary
  117. No response from Vacuumtubes.net
  118. dynakit pam selenium rectifier replacement help
  119. Adjustable Fixed Grid Bias
  120. Best output transformer for 300B
  121. Transconductance of E88CC,6922,6N23P
  122. Finding The Root Of The Problem
  123. Beard P35
  124. purple tube heaters...
  125. Which 12AU7 and 6V6GTs?
  126. 6f2 - 6n1???
  127. Help with Schematic
  128. Class A Push Pull with 6L6GC
  129. EL84 driver tube, with less than 5mA current
  130. Sleeping Sickness
  131. 50L6-GT or 6W6-GT
  132. Help ID this transformer
  133. Tube dropping - Help?
  134. For anyone running a K-502 with a FR driver
  135. Active crossover
  136. General guidence building guitar amp
  137. Pounds, Shillings and Pence
  138. Trying to learn something, against my better judgment
  139. Battery grid bias to fixed bias in Toccato?
  140. PLS take a look!
  141. Use for 5K:8 PP OPT?
  142. Low amp Impedance input and high dac output
  143. The Magic of a Name
  144. which edition of Morgan Jones' books?
  145. altec 1530 schematic
  146. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  147. 6HB6/6HA& Spud?
  148. schematic diagram golden tube se40 for repair! help
  149. Reliable B+ PSU for pro preamp
  150. Help me find some info please
  151. Some tube radios
  152. Electro Harmonix 300b...shorting problems?
  153. Aikido linestage tube choice? (again)
  154. Teeco 1220??
  155. magic smoke pilot aa903
  156. PP bias balance pot
  157. Jolida JD 502A
  158. Cathode Bias for SimpleSE
  159. TRemPre malfunctioning
  160. HV benchtop power supply, help on opamp setup
  161. Transcendar Output Transformers ST70
  162. Unofficial Tube Market Survey
  163. testing 6DJ8s
  164. 6L6 AB PPP stage; does it make sense?
  165. 7868 tubes - replace with 6L6's?
  166. Vintage Amp...too much gain on CD
  167. ETF07 - Last possibility to join
  168. Tube 7403
  169. New SET: JE labs simple 45 or tubelab SE?
  170. Melos triode and computer as source: BUZZ BUZZ BUZZ
  171. 6SN7 Cascoded CCS
  172. 7591 se tube amp?
  173. Sovtek 5881WXT/Quad II
  174. Adding more capacitors to an AMP
  175. Tube Characteristics
  176. Tube guilt
  177. KT88 or 6550
  178. Single ended OTL Transcendent
  179. K-12 kit, buzz in R channel
  180. Hickok 752A repair
  181. my new tube line stage
  182. Audio Innovations Series 200 Phono Stage
  183. is it correct to calculate OTL?
  184. Late Halloween Cartoon
  185. on/off/on switch for bright/bold?
  186. Another CCS for tubes/valves: PCBs
  187. Customdaveus
  188. newbie questions on Bogen M330A repair
  189. crackling sound from one channel
  190. Cosmos Valve amplifier
  191. The Vacuum Tube Truth
  192. Inverted Triode SE OTL
  193. Negative feedback problems on ECL82 SE amp.
  194. Cheap tester?
  195. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  196. Fisher SA 1000
  197. Hot Hot Hot
  198. Dynaco PAS-4 manual
  199. amplifier pp with 6p3s
  200. rusty chassis - what to do?
  201. Use 9 pin Aikido PCB kit or buy 8 pin ?
  202. Where to find data sheets?
  203. how to reverse signal for Common Cathode circuit
  204. Audio note M2 power supply resistor value
  205. Are 6DZ7 to Rare to be fun?
  206. 7868 substitutes
  207. Millet Hybrid - stacked buffers
  208. Repairing an old tube raido
  209. 3 way ultimate DIY phonostage match!
  210. wanted sv572-3
  211. General Aikido power supply question
  212. question about beefing up my monoblocks
  213. multichannel tube amp
  214. Who can explain this FFT graph to me
  215. Equivalent Noise Resistance
  216. Any Tube heads near Central coast NSW
  217. Question
  218. Screen Supply For PP Amp
  219. Datasheets: RC coupled amp VS. typical characteristics
  220. How to calculate Tube Preamp output impedance?
  221. What vintage tube books do you own?
  222. re design of a SE tube amplifier
  223. NRI 70 tube chart
  224. Multimeter
  225. fizzy and unstable
  226. Russian spud amp
  227. Silly Question about 807
  228. Help with dared MP-15, please!
  229. tube tester B&k 606 Transformer brun need help
  230. Do tube curves tell most of the story?
  231. Sovtek 6B4-G
  232. Ultimate Amplifier
  233. How quiet is dead quiet?
  234. Max B+ for triode-connected KT88
  235. Acrosound Archive
  236. Hail to Vintage Power Transformer & Choke?
  237. 2a3 parafeed
  238. Kimmel mu stage
  239. 4043c
  240. Impedance quandary
  241. 6L6G Amp recommendations
  242. Beefing up the power supply
  243. System distortion and Single Ended Tube Amps
  244. TB3/1000 is alive ! ("European 833A")
  245. Another tube newb
  246. Decoding another recycled power trans
  247. parafeed plate choke calculation
  248. New to tube building / design - Input requested!
  249. tube preamp with hum??emf
  250. Which tubes for this OPT?

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