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  1. Question about phono preamp schematic
  2. Lectron JH50 unknown parts?
  3. Fostex or Car Speakers for My Tube Car Amp
  4. schematics? (also some questions)
  5. Regulated Power Supply. Bipolar, JFET or MOS?
  6. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  7. Blown up resistor in S-5 amp kit...
  8. EZ80 or 81
  9. Gun or Iron?
  10. Shanling SP-80C Problem - DC Spikes?!
  11. Need some advice on a LTP input stage.
  12. CAT 110V to 220 V conversion
  13. When is a compactron not a compactron?
  14. Looking for big Ni lams
  15. Three PP KT88 designs. Which one ... (please;-)
  16. EAR 834P needing repair
  17. Toasted PW tranformer?
  18. Tube Cad from Glass-Ware questions
  19. U-links for earthing
  20. Supreme 45 tube amp
  21. Boxing Day Special
  22. Look what Santa brought!
  23. Soft Start for Tubes
  24. Need help to check out this preamp schematic.
  25. What dimensions for perforated AL sheet?
  26. NC pins on submin tubes
  27. Cheap alternative to EF86
  28. MOSFET follower driver oscillation
  29. Hi-Fi system build
  30. Car Tube Amp
  31. Tube Identification
  32. Supratek schematics?
  33. Choice of OTL output capacitors
  34. Feedback scheme.
  35. Christmas Eve
  36. Best tubes for Scott 222
  37. HH Scott 222 speaker recommendations and upgrades
  38. mixing coupling cap types
  39. Transformer chassis layout
  40. SimpleSE / Edcor CXSE OPT
  41. Star ground help
  42. What causes my 0D3 to extinguish?
  43. converting UL in triode
  44. Beyer Dynamic BV35570
  45. Lundahl LL1527 phase-splitter
  46. Morgan Jones HPA ...strange startup behaviour
  47. Best Sounding Phono Input Tube
  48. We417+300b
  49. class-A PP amplifier with 2x 845 question
  50. Kismet-300B-amp
  51. Will differential share the same THD characteristics as SE, if same triode is used?
  52. The biggest bunch of tubes ever seen
  53. DHT AC Filament Noise
  54. augmented cathode follower?
  55. Tube amp find in old theater
  56. Is there a better amp kit????
  57. figuring amplification factor of a tube
  58. SE 6l6
  59. Need help
  60. Dynaco (Dynaclone) PA060 transformer
  61. Switching power supply for tube filaments possible???
  62. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  63. DN2540/2535 fun and games
  64. 6P3S SE amp requesting
  65. Newbie needs Magnavox console troubleshooting tips
  66. 6bBYGA x2 as full-wave rectifier?
  67. Digital volume/tone control in Tube amps
  68. plotting load-line for OTL amp?
  69. New SE 6P15P project
  70. New Production Shuguang Type 50 Tubes
  71. Running different tubes
  72. Fairchild 260 rebuild questions
  73. Filament Voltage vs. Hum
  74. drawing a loadline from schematics
  75. Know this tube? 10J12C or 10X12C ...
  76. Precision Fidelity - C7 Mods...help Wanted!
  77. stupid newbie: what is this transformer???
  78. Anyone else having problems with Mercury Magnetics transformers?
  79. EF86-EL84: too much gain!
  80. Balanced Power
  81. GTA 300B SE Mk.II Power Transformer
  82. Tube Shields
  83. Some basic questions about s-5 amp kit mods
  84. Novice Voltage Regulator Question
  85. The Critical Ear
  86. Tube matching service - As found on Craigslist
  87. 6j1 question
  88. Duosonic 40's era record player
  89. 6bl8 el84 nfb question
  90. 6T9 push pull
  91. 12AY7 circuit?
  92. E810F: RIAA circuits
  93. need EL519/6KG6 spice 3f4 model
  94. enough gain for James tone stack
  95. Anyone recognise this amp?
  96. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  97. matched tubes?
  98. List of current production types
  99. Soundcard greater than 24-bit
  100. Replacing Valves Leak Stereo 20
  101. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  102. I Damaged my Amp?
  103. EL84 Triode PP Design
  104. pentode with grid AND cathode tied to gnd?
  105. What d'you put in the PSU chassis, and what in the circuit chassis?
  106. a real no-brainer question about 1/2 tubes
  107. 813 power supply question
  108. OPT-102 - data? (Audio Electronic Supply)
  109. Help me out with a circuit design
  110. Partial Feedback EL84PP - Not quite as expected (yet)
  111. Preamp suggestions - Help a hack have some fun
  112. 6GK6 Ultralinear
  113. Vacuum Rectifier Question
  114. LM4702 meets up with 6550's
  115. 6bx7gt envelope temperature
  116. Counterpoint SA 3 schematic
  117. Tubes measured in microhms = mA..?
  118. Checking ARC SP9
  119. 6J11 Datasheet anyone?
  120. Help cleaning tube pins
  121. Best way to use a PAIR of 6SL7ís to drive a 300B?
  122. preamp cathode bypass cap benefits
  123. EF184 or (EC)L82 radio amplifier?!
  124. 5687 for Aikido
  125. Pre Amplifier Out Sockets
  126. Recommended output valves for this transformer
  127. power tubes and learning SET design
  128. Phono pre-amp Question
  129. TVA-1 cathode resistor value
  130. need power tranformer ideas
  131. Cary Cad-300b Se
  132. newbie question about 7591 cathode bias
  133. 5814 Raytheon Windmill Getter late 50's
  134. Fundamentals of tube amp design
  135. 7868 amp sounds good but low volume
  136. How does class AB2 sound?
  137. 6sn7 brand
  138. Might speaker filters be in the wrong place?
  139. Problem: attenuation after cathodyne and CF
  140. LED bias and differential pairs
  141. Kimmel Mu stage summary sheet
  142. Tube buffer for car audio
  143. Practical PSE thinking.
  144. Kr300bxls
  145. Biggest noval dual triode?
  146. 2 amps with 1 set of speakers?
  147. tubeamp kits
  148. Tripletone amplifier
  149. Help with Shunt Regulation and Noise
  150. Plug 'N' Play B+ time delay
  151. Precision PA conversion help needed
  152. Caps in Voltage divider Heater Bias ?
  153. Looking for Melos triode 200+ schematics
  154. ETF07 brief summary
  155. No response from Vacuumtubes.net
  156. dynakit pam selenium rectifier replacement help
  157. Adjustable Fixed Grid Bias
  158. Best output transformer for 300B
  159. Transconductance of E88CC,6922,6N23P
  160. Finding The Root Of The Problem
  161. Beard P35
  162. purple tube heaters...
  163. Which 12AU7 and 6V6GTs?
  164. 6f2 - 6n1???
  165. Help with Schematic
  166. Class A Push Pull with 6L6GC
  167. EL84 driver tube, with less than 5mA current
  168. Sleeping Sickness
  169. 50L6-GT or 6W6-GT
  170. Help ID this transformer
  171. Tube dropping - Help?
  172. For anyone running a K-502 with a FR driver
  173. Active crossover
  174. Pounds, Shillings and Pence
  175. Trying to learn something, against my better judgment
  176. Battery grid bias to fixed bias in Toccato?
  177. PLS take a look!
  178. Use for 5K:8 PP OPT?
  179. Low amp Impedance input and high dac output
  180. The Magic of a Name
  181. which edition of Morgan Jones' books?
  182. altec 1530 schematic
  183. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  184. 6HB6/6HA& Spud?
  185. schematic diagram golden tube se40 for repair! help
  186. Reliable B+ PSU for pro preamp
  187. Help me find some info please
  188. Some tube radios
  189. Electro Harmonix 300b...shorting problems?
  190. Aikido linestage tube choice? (again)
  191. Teeco 1220??
  192. magic smoke pilot aa903
  193. PP bias balance pot
  194. Jolida JD 502A
  195. Cathode Bias for SimpleSE
  196. TRemPre malfunctioning
  197. HV benchtop power supply, help on opamp setup
  198. Transcendar Output Transformers ST70
  199. Unofficial Tube Market Survey
  200. testing 6DJ8s
  201. 6L6 AB PPP stage; does it make sense?
  202. 7868 tubes - replace with 6L6's?
  203. Vintage Amp...too much gain on CD
  204. ETF07 - Last possibility to join
  205. Tube 7403
  206. New SET: JE labs simple 45 or tubelab SE?
  207. Melos triode and computer as source: BUZZ BUZZ BUZZ
  208. 6SN7 Cascoded CCS
  209. 7591 se tube amp?
  210. Sovtek 5881WXT/Quad II
  211. Adding more capacitors to an AMP
  212. Tube Characteristics
  213. Tube guilt
  214. KT88 or 6550
  215. Single ended OTL Transcendent
  216. K-12 kit, buzz in R channel
  217. Hickok 752A repair
  218. my new tube line stage
  219. Audio Innovations Series 200 Phono Stage
  220. is it correct to calculate OTL?
  221. Late Halloween Cartoon
  222. on/off/on switch for bright/bold?
  223. Another CCS for tubes/valves: PCBs
  224. Customdaveus
  225. newbie questions on Bogen M330A repair
  226. crackling sound from one channel
  227. Cosmos Valve amplifier
  228. The Vacuum Tube Truth
  229. Inverted Triode SE OTL
  230. Negative feedback problems on ECL82 SE amp.
  231. Cheap tester?
  232. Anyone familiar with Hyuger HK-300BS kit from Hino Audio?
  233. Fisher SA 1000
  234. Hot Hot Hot
  235. Dynaco PAS-4 manual
  236. amplifier pp with 6p3s
  237. rusty chassis - what to do?
  238. Use 9 pin Aikido PCB kit or buy 8 pin ?
  239. Where to find data sheets?
  240. how to reverse signal for Common Cathode circuit
  241. Audio note M2 power supply resistor value
  242. Are 6DZ7 to Rare to be fun?
  243. 7868 substitutes
  244. Millet Hybrid - stacked buffers
  245. Repairing an old tube raido
  246. 3 way ultimate DIY phonostage match!
  247. wanted sv572-3
  248. General Aikido power supply question
  249. question about beefing up my monoblocks
  250. multichannel tube amp

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