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  1. Tube Identification
  2. Supratek schematics?
  3. Choice of OTL output capacitors
  4. Feedback scheme.
  5. Christmas Eve
  6. Best tubes for Scott 222
  7. HH Scott 222 speaker recommendations and upgrades
  8. mixing coupling cap types
  9. Transformer chassis layout
  10. SimpleSE / Edcor CXSE OPT
  11. Star ground help
  12. What causes my 0D3 to extinguish?
  13. converting UL in triode
  14. Beyer Dynamic BV35570
  15. Lundahl LL1527 phase-splitter
  16. Morgan Jones HPA ...strange startup behaviour
  17. Best Sounding Phono Input Tube
  18. We417+300b
  19. class-A PP amplifier with 2x 845 question
  20. Kismet-300B-amp
  21. Will differential share the same THD characteristics as SE, if same triode is used?
  22. The biggest bunch of tubes ever seen
  23. DHT AC Filament Noise
  24. augmented cathode follower?
  25. Tube amp find in old theater
  26. Is there a better amp kit????
  27. figuring amplification factor of a tube
  28. SE 6l6
  29. Need help
  30. Dynaco (Dynaclone) PA060 transformer
  31. Switching power supply for tube filaments possible???
  32. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  33. DN2540/2535 fun and games
  34. 6P3S SE amp requesting
  35. Newbie needs Magnavox console troubleshooting tips
  36. 6bBYGA x2 as full-wave rectifier?
  37. Digital volume/tone control in Tube amps
  38. plotting load-line for OTL amp?
  39. New SE 6P15P project
  40. New Production Shuguang Type 50 Tubes
  41. Running different tubes
  42. Fairchild 260 rebuild questions
  43. Filament Voltage vs. Hum
  44. drawing a loadline from schematics
  45. Know this tube? 10J12C or 10X12C ...
  46. Precision Fidelity - C7 Mods...help Wanted!
  47. stupid newbie: what is this transformer???
  48. Anyone else having problems with Mercury Magnetics transformers?
  49. EF86-EL84: too much gain!
  50. Balanced Power
  51. GTA 300B SE Mk.II Power Transformer
  52. Tube Shields
  53. Some basic questions about s-5 amp kit mods
  54. Novice Voltage Regulator Question
  55. The Critical Ear
  56. Tube matching service - As found on Craigslist
  57. 6j1 question
  58. Duosonic 40's era record player
  59. 6bl8 el84 nfb question
  60. 6T9 push pull
  61. 12AY7 circuit?
  62. E810F: RIAA circuits
  63. need EL519/6KG6 spice 3f4 model
  64. enough gain for James tone stack
  65. Anyone recognise this amp?
  66. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  67. matched tubes?
  68. List of current production types
  69. Soundcard greater than 24-bit
  70. Replacing Valves Leak Stereo 20
  71. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  72. I Damaged my Amp?
  73. EL84 Triode PP Design
  74. pentode with grid AND cathode tied to gnd?
  75. What d'you put in the PSU chassis, and what in the circuit chassis?
  76. a real no-brainer question about 1/2 tubes
  77. 813 power supply question
  78. OPT-102 - data? (Audio Electronic Supply)
  79. Help me out with a circuit design
  80. Partial Feedback EL84PP - Not quite as expected (yet)
  81. Preamp suggestions - Help a hack have some fun
  82. 6GK6 Ultralinear
  83. Vacuum Rectifier Question
  84. LM4702 meets up with 6550's
  85. 6bx7gt envelope temperature
  86. Counterpoint SA 3 schematic
  87. Tubes measured in microhms = mA..?
  88. Checking ARC SP9
  89. 6J11 Datasheet anyone?
  90. Help cleaning tube pins
  91. Best way to use a PAIR of 6SL7ís to drive a 300B?
  92. preamp cathode bypass cap benefits
  93. EF184 or (EC)L82 radio amplifier?!
  94. 5687 for Aikido
  95. Pre Amplifier Out Sockets
  96. Recommended output valves for this transformer
  97. power tubes and learning SET design
  98. Phono pre-amp Question
  99. TVA-1 cathode resistor value
  100. need power tranformer ideas
  101. Cary Cad-300b Se
  102. newbie question about 7591 cathode bias
  103. 5814 Raytheon Windmill Getter late 50's
  104. Fundamentals of tube amp design
  105. 7868 amp sounds good but low volume
  106. How does class AB2 sound?
  107. 6sn7 brand
  108. Might speaker filters be in the wrong place?
  109. Problem: attenuation after cathodyne and CF
  110. LED bias and differential pairs
  111. Kimmel Mu stage summary sheet
  112. Tube buffer for car audio
  113. Practical PSE thinking.
  114. Kr300bxls
  115. Biggest noval dual triode?
  116. 2 amps with 1 set of speakers?
  117. tubeamp kits
  118. Tripletone amplifier
  119. Help with Shunt Regulation and Noise
  120. Plug 'N' Play B+ time delay
  121. Precision PA conversion help needed
  122. Caps in Voltage divider Heater Bias ?
  123. Looking for Melos triode 200+ schematics
  124. ETF07 brief summary
  125. No response from Vacuumtubes.net
  126. dynakit pam selenium rectifier replacement help
  127. Adjustable Fixed Grid Bias
  128. Best output transformer for 300B
  129. Transconductance of E88CC,6922,6N23P
  130. Finding The Root Of The Problem
  131. Beard P35
  132. purple tube heaters...
  133. Which 12AU7 and 6V6GTs?
  134. 6f2 - 6n1???
  135. Help with Schematic
  136. Class A Push Pull with 6L6GC
  137. EL84 driver tube, with less than 5mA current
  138. Sleeping Sickness
  139. 50L6-GT or 6W6-GT
  140. Help ID this transformer
  141. Tube dropping - Help?
  142. For anyone running a K-502 with a FR driver
  143. Active crossover
  144. Pounds, Shillings and Pence
  145. Trying to learn something, against my better judgment
  146. Battery grid bias to fixed bias in Toccato?
  147. PLS take a look!
  148. Use for 5K:8 PP OPT?
  149. Low amp Impedance input and high dac output
  150. The Magic of a Name
  151. which edition of Morgan Jones' books?
  152. altec 1530 schematic
  153. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  154. 6HB6/6HA& Spud?
  155. schematic diagram golden tube se40 for repair! help
  156. Reliable B+ PSU for pro preamp
  157. Help me find some info please
  158. Some tube radios
  159. Electro Harmonix 300b...shorting problems?
  160. Aikido linestage tube choice? (again)
  161. Teeco 1220??
  162. magic smoke pilot aa903
  163. PP bias balance pot
  164. Jolida JD 502A
  165. Cathode Bias for SimpleSE
  166. TRemPre malfunctioning
  167. HV benchtop power supply, help on opamp setup
  168. Transcendar Output Transformers ST70
  169. Unofficial Tube Market Survey
  170. testing 6DJ8s
  171. 6L6 AB PPP stage; does it make sense?
  172. 7868 tubes - replace with 6L6's?
  173. Vintage Amp...too much gain on CD
  174. ETF07 - Last possibility to join
  175. Tube 7403
  176. Melos triode and computer as source: BUZZ BUZZ BUZZ
  177. 6SN7 Cascoded CCS
  178. 7591 se tube amp?
  179. Sovtek 5881WXT/Quad II
  180. Adding more capacitors to an AMP
  181. Tube Characteristics
  182. Tube guilt
  183. KT88 or 6550
  184. Single ended OTL Transcendent
  185. K-12 kit, buzz in R channel
  186. my new tube line stage
  187. Audio Innovations Series 200 Phono Stage
  188. is it correct to calculate OTL?
  189. Late Halloween Cartoon
  190. on/off/on switch for bright/bold?
  191. Another CCS for tubes/valves: PCBs
  192. Customdaveus
  193. newbie questions on Bogen M330A repair
  194. crackling sound from one channel
  195. Cosmos Valve amplifier
  196. The Vacuum Tube Truth
  197. Inverted Triode SE OTL
  198. Negative feedback problems on ECL82 SE amp.
  199. Cheap tester?
  200. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  201. Fisher SA 1000
  202. Hot Hot Hot
  203. Dynaco PAS-4 manual
  204. amplifier pp with 6p3s
  205. rusty chassis - what to do?
  206. Use 9 pin Aikido PCB kit or buy 8 pin ?
  207. Where to find data sheets?
  208. how to reverse signal for Common Cathode circuit
  209. Audio note M2 power supply resistor value
  210. Are 6DZ7 to Rare to be fun?
  211. 7868 substitutes
  212. Millet Hybrid - stacked buffers
  213. Repairing an old tube raido
  214. 3 way ultimate DIY phonostage match!
  215. wanted sv572-3
  216. General Aikido power supply question
  217. question about beefing up my monoblocks
  218. multichannel tube amp
  219. Who can explain this FFT graph to me
  220. Equivalent Noise Resistance
  221. Any Tube heads near Central coast NSW
  222. Question
  223. Screen Supply For PP Amp
  224. Datasheets: RC coupled amp VS. typical characteristics
  225. How to calculate Tube Preamp output impedance?
  226. What vintage tube books do you own?
  227. re design of a SE tube amplifier
  228. NRI 70 tube chart
  229. Multimeter
  230. fizzy and unstable
  231. Russian spud amp
  232. Silly Question about 807
  233. Help with dared MP-15, please!
  234. Do tube curves tell most of the story?
  235. Sovtek 6B4-G
  236. Ultimate Amplifier
  237. How quiet is dead quiet?
  238. Max B+ for triode-connected KT88
  239. Acrosound Archive
  240. Hail to Vintage Power Transformer & Choke?
  241. 2a3 parafeed
  242. Kimmel mu stage
  243. 4043c
  244. Impedance quandary
  245. 6L6G Amp recommendations
  246. Beefing up the power supply
  247. System distortion and Single Ended Tube Amps
  248. TB3/1000 is alive ! ("European 833A")
  249. Another tube newb
  250. Decoding another recycled power trans

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