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  1. Soft Start for Tubes
  2. Need help to check out this preamp schematic.
  3. What dimensions for perforated AL sheet?
  4. NC pins on submin tubes
  5. Cheap alternative to EF86
  6. MOSFET follower driver oscillation
  7. Hi-Fi system build
  8. Car Tube Amp
  9. Tube Identification
  10. Supratek schematics?
  11. Choice of OTL output capacitors
  12. Feedback scheme.
  13. Christmas Eve
  14. Best tubes for Scott 222
  15. HH Scott 222 speaker recommendations and upgrades
  16. mixing coupling cap types
  17. Transformer chassis layout
  18. SimpleSE / Edcor CXSE OPT
  19. Star ground help
  20. What causes my 0D3 to extinguish?
  21. converting UL in triode
  22. Beyer Dynamic BV35570
  23. Lundahl LL1527 phase-splitter
  24. Morgan Jones HPA ...strange startup behaviour
  25. Best Sounding Phono Input Tube
  26. We417+300b
  27. class-A PP amplifier with 2x 845 question
  28. Kismet-300B-amp
  29. Will differential share the same THD characteristics as SE, if same triode is used?
  30. The biggest bunch of tubes ever seen
  31. DHT AC Filament Noise
  32. augmented cathode follower?
  33. Tube amp find in old theater
  34. Is there a better amp kit????
  35. figuring amplification factor of a tube
  36. SE 6l6
  37. Need help
  38. Dynaco (Dynaclone) PA060 transformer
  39. Switching power supply for tube filaments possible???
  40. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  41. DN2540/2535 fun and games
  42. 6P3S SE amp requesting
  43. Newbie needs Magnavox console troubleshooting tips
  44. 6bBYGA x2 as full-wave rectifier?
  45. Digital volume/tone control in Tube amps
  46. plotting load-line for OTL amp?
  47. New SE 6P15P project
  48. New Production Shuguang Type 50 Tubes
  49. Running different tubes
  50. Fairchild 260 rebuild questions
  51. Filament Voltage vs. Hum
  52. drawing a loadline from schematics
  53. Know this tube? 10J12C or 10X12C ...
  54. Precision Fidelity - C7 Mods...help Wanted!
  55. stupid newbie: what is this transformer???
  56. Anyone else having problems with Mercury Magnetics transformers?
  57. EF86-EL84: too much gain!
  58. Balanced Power
  59. GTA 300B SE Mk.II Power Transformer
  60. Tube Shields
  61. Some basic questions about s-5 amp kit mods
  62. Novice Voltage Regulator Question
  63. The Critical Ear
  64. Tube matching service - As found on Craigslist
  65. 6j1 question
  66. Duosonic 40's era record player
  67. 6bl8 el84 nfb question
  68. 6T9 push pull
  69. 12AY7 circuit?
  70. E810F: RIAA circuits
  71. need EL519/6KG6 spice 3f4 model
  72. enough gain for James tone stack
  73. Anyone recognise this amp?
  74. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  75. matched tubes?
  76. List of current production types
  77. Soundcard greater than 24-bit
  78. Replacing Valves Leak Stereo 20
  79. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  80. I Damaged my Amp?
  81. EL84 Triode PP Design
  82. pentode with grid AND cathode tied to gnd?
  83. What d'you put in the PSU chassis, and what in the circuit chassis?
  84. a real no-brainer question about 1/2 tubes
  85. 813 power supply question
  86. OPT-102 - data? (Audio Electronic Supply)
  87. Help me out with a circuit design
  88. Partial Feedback EL84PP - Not quite as expected (yet)
  89. Preamp suggestions - Help a hack have some fun
  90. 6GK6 Ultralinear
  91. Vacuum Rectifier Question
  92. LM4702 meets up with 6550's
  93. 6bx7gt envelope temperature
  94. Counterpoint SA 3 schematic
  95. Tubes measured in microhms = mA..?
  96. Checking ARC SP9
  97. 6J11 Datasheet anyone?
  98. Help cleaning tube pins
  99. Best way to use a PAIR of 6SL7ís to drive a 300B?
  100. preamp cathode bypass cap benefits
  101. EF184 or (EC)L82 radio amplifier?!
  102. 5687 for Aikido
  103. Pre Amplifier Out Sockets
  104. Recommended output valves for this transformer
  105. power tubes and learning SET design
  106. Phono pre-amp Question
  107. TVA-1 cathode resistor value
  108. need power tranformer ideas
  109. Cary Cad-300b Se
  110. newbie question about 7591 cathode bias
  111. 5814 Raytheon Windmill Getter late 50's
  112. Fundamentals of tube amp design
  113. 7868 amp sounds good but low volume
  114. How does class AB2 sound?
  115. 6sn7 brand
  116. Might speaker filters be in the wrong place?
  117. Problem: attenuation after cathodyne and CF
  118. LED bias and differential pairs
  119. Kimmel Mu stage summary sheet
  120. Tube buffer for car audio
  121. Practical PSE thinking.
  122. Kr300bxls
  123. Biggest noval dual triode?
  124. 2 amps with 1 set of speakers?
  125. tubeamp kits
  126. Tripletone amplifier
  127. Tube curves tracer
  128. Help with Shunt Regulation and Noise
  129. Plug 'N' Play B+ time delay
  130. Precision PA conversion help needed
  131. Caps in Voltage divider Heater Bias ?
  132. Looking for Melos triode 200+ schematics
  133. ETF07 brief summary
  134. No response from Vacuumtubes.net
  135. dynakit pam selenium rectifier replacement help
  136. Adjustable Fixed Grid Bias
  137. Best output transformer for 300B
  138. Transconductance of E88CC,6922,6N23P
  139. Finding The Root Of The Problem
  140. Beard P35
  141. purple tube heaters...
  142. Which 12AU7 and 6V6GTs?
  143. 6f2 - 6n1???
  144. Help with Schematic
  145. Class A Push Pull with 6L6GC
  146. EL84 driver tube, with less than 5mA current
  147. Sleeping Sickness
  148. 50L6-GT or 6W6-GT
  149. Help ID this transformer
  150. Tube dropping - Help?
  151. For anyone running a K-502 with a FR driver
  152. Active crossover
  153. Pounds, Shillings and Pence
  154. Trying to learn something, against my better judgment
  155. Battery grid bias to fixed bias in Toccato?
  156. PLS take a look!
  157. Use for 5K:8 PP OPT?
  158. Low amp Impedance input and high dac output
  159. The Magic of a Name
  160. which edition of Morgan Jones' books?
  161. altec 1530 schematic
  162. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  163. 6HB6/6HA& Spud?
  164. schematic diagram golden tube se40 for repair! help
  165. Reliable B+ PSU for pro preamp
  166. Help me find some info please
  167. Some tube radios
  168. Electro Harmonix 300b...shorting problems?
  169. Aikido linestage tube choice? (again)
  170. Teeco 1220??
  171. magic smoke pilot aa903
  172. PP bias balance pot
  173. Jolida JD 502A
  174. Cathode Bias for SimpleSE
  175. TRemPre malfunctioning
  176. HV benchtop power supply, help on opamp setup
  177. Transcendar Output Transformers ST70
  178. Unofficial Tube Market Survey
  179. testing 6DJ8s
  180. 6L6 AB PPP stage; does it make sense?
  181. 7868 tubes - replace with 6L6's?
  182. Vintage Amp...too much gain on CD
  183. ETF07 - Last possibility to join
  184. Tube 7403
  185. New SET: JE labs simple 45 or tubelab SE?
  186. Melos triode and computer as source: BUZZ BUZZ BUZZ
  187. 6SN7 Cascoded CCS
  188. 7591 se tube amp?
  189. Sovtek 5881WXT/Quad II
  190. Adding more capacitors to an AMP
  191. Tube Characteristics
  192. Tube guilt
  193. KT88 or 6550
  194. Single ended OTL Transcendent
  195. K-12 kit, buzz in R channel
  196. Hickok 752A repair
  197. my new tube line stage
  198. Audio Innovations Series 200 Phono Stage
  199. is it correct to calculate OTL?
  200. Late Halloween Cartoon
  201. on/off/on switch for bright/bold?
  202. Another CCS for tubes/valves: PCBs
  203. Customdaveus
  204. newbie questions on Bogen M330A repair
  205. crackling sound from one channel
  206. Cosmos Valve amplifier
  207. The Vacuum Tube Truth
  208. Inverted Triode SE OTL
  209. Negative feedback problems on ECL82 SE amp.
  210. Cheap tester?
  211. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  212. Fisher SA 1000
  213. Hot Hot Hot
  214. Dynaco PAS-4 manual
  215. amplifier pp with 6p3s
  216. rusty chassis - what to do?
  217. Use 9 pin Aikido PCB kit or buy 8 pin ?
  218. Where to find data sheets?
  219. how to reverse signal for Common Cathode circuit
  220. Audio note M2 power supply resistor value
  221. Are 6DZ7 to Rare to be fun?
  222. 7868 substitutes
  223. Millet Hybrid - stacked buffers
  224. Repairing an old tube raido
  225. 3 way ultimate DIY phonostage match!
  226. wanted sv572-3
  227. General Aikido power supply question
  228. question about beefing up my monoblocks
  229. multichannel tube amp
  230. Who can explain this FFT graph to me
  231. Equivalent Noise Resistance
  232. Any Tube heads near Central coast NSW
  233. Question
  234. Screen Supply For PP Amp
  235. Datasheets: RC coupled amp VS. typical characteristics
  236. How to calculate Tube Preamp output impedance?
  237. What vintage tube books do you own?
  238. re design of a SE tube amplifier
  239. NRI 70 tube chart
  240. Multimeter
  241. fizzy and unstable
  242. Russian spud amp
  243. Silly Question about 807
  244. Help with dared MP-15, please!
  245. tube tester B&k 606 Transformer brun need help
  246. Do tube curves tell most of the story?
  247. Sovtek 6B4-G
  248. Ultimate Amplifier
  249. How quiet is dead quiet?
  250. Max B+ for triode-connected KT88

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