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  1. Twist dc filament wire?
  2. Power transformer: How Big?
  3. Heater supply options and to Vhk rating of 6X4 & 6203
  4. Hammond 125ESE and sections
  5. 6P15P hybrid amp schema?
  6. Switching voltage converter for HV supply
  7. VT4C output transformer
  8. Sound Multiplex Amp
  9. Suggestions needed for improving Rogers Cadet II PP power amplifier
  10. Adjustable Line out off of Extra Speaker Jack
  11. Transcendere Audio
  12. Wrong capacitors!
  13. 6LW6 operating points
  14. ?? xmer specs for Scott LC 21 or 130 Preamp for rewind...
  15. Loctal 6SN7?
  16. Need some help with simulation
  17. output tranny for 6AK6
  18. What tubes for 7K6PP X-former
  19. Ham radio op makes his own triodes
  20. Newbie looking for some advice on mods and tubes for Cayin TA-30
  21. Power Transconductance Amp with Tubes, How?
  22. using the 6BX7 at low'ish current in Aikido
  23. What preamp should I build?
  24. Transformer hookup question.
  25. Home made vacuum tubes
  26. My New EL84 PP
  27. Hammond power transformer fillament rating
  28. Need help with a Russian Triode
  29. TRAFO NEEDED FOR EL84 pp
  30. Difference between 6JN6 (Berning output) and 6JB6 tubes?
  31. 2A3 SE Amp
  32. Soldering tubes directly to PCB?
  33. pa amp distortion at low volume
  34. Potted transformers
  35. if this can works...
  36. Differential scope probes?
  37. Fisher X100B Iron
  38. Solid state power suppy for CAT SL-1
  39. Help with wiring a Hammond Power Transformer
  40. User manual for GTA SE-40 Tube Amp ?
  41. tube caps that fit.. anyone?
  42. Heater wires through conduit
  43. Wanted - Svet Sk4A bases
  44. AC Characteristics of Glow Tubes?
  45. Bargain Used Transformers: Where?
  46. Top cap tube users: pics of your amps?
  47. Question
  48. „New“ Pentode – measuring resistance between grids G2 and G3 – any idea?
  49. Audio Transformers 101
  50. Thinking about having a 211 SET amp built, anyone know of good schematics?
  51. 4-65A Triode curves?
  52. Tube projects
  53. Push-Pull Cathode Bias Resistors
  54. Opinion on 300B SETs
  55. So how tattered is your Morgan Jones?
  56. Friend wants to buy a nice tube preamp
  57. Large Oil Capacitors
  58. Too awesome for words
  59. M65 stereo preamp question
  60. nasty buzz in old 35EH5 amp
  61. 6C33C tube stamp
  62. Question about VTV 6SN7 Schematic
  63. Simple Magic Eye Circuit Wanted
  64. Mute circuit on sonic frontier line one
  65. Data point software?
  66. MingDa MC-3R / icon audio la3 preamp mods
  67. Biasing
  68. Compactron characteristic curves?
  69. Analog Metric grounded grid preamp kit
  70. Possible group buy of Lundahl input/phase splitter transformers.
  71. Audio Measurements
  72. B/A 20-4 tube mono block??
  73. Strange find.. help ID?
  74. 813 Thoughts
  75. External 12V heater supply conversion question
  76. My Latest Acquisition
  77. 50/60/whatever cycle hum
  78. OEP input transformers. Anyone used ??
  79. Restack transformer from PP to SE
  80. Se 807??
  81. Min 9-pin or 7-pin sockets to fit octal-sized holes?
  82. Question about phono preamp schematic
  83. Lectron JH50 unknown parts?
  84. Fostex or Car Speakers for My Tube Car Amp
  85. schematics? (also some questions)
  86. Regulated Power Supply. Bipolar, JFET or MOS?
  87. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  88. Blown up resistor in S-5 amp kit...
  89. EZ80 or 81
  90. Gun or Iron?
  91. Shanling SP-80C Problem - DC Spikes?!
  92. Need some advice on a LTP input stage.
  93. CAT 110V to 220 V conversion
  94. When is a compactron not a compactron?
  95. Looking for big Ni lams
  96. Three PP KT88 designs. Which one ... (please;-)
  97. EAR 834P needing repair
  98. Toasted PW tranformer?
  99. Tube Cad from Glass-Ware questions
  100. U-links for earthing
  101. Supreme 45 tube amp
  102. Boxing Day Special
  103. Look what Santa brought!
  104. Soft Start for Tubes
  105. Need help to check out this preamp schematic.
  106. What dimensions for perforated AL sheet?
  107. NC pins on submin tubes
  108. Cheap alternative to EF86
  109. MOSFET follower driver oscillation
  110. Hi-Fi system build
  111. Car Tube Amp
  112. Tube Identification
  113. Supratek schematics?
  114. Choice of OTL output capacitors
  115. Feedback scheme.
  116. Christmas Eve
  117. Best tubes for Scott 222
  118. HH Scott 222 speaker recommendations and upgrades
  119. mixing coupling cap types
  120. Transformer chassis layout
  121. SimpleSE / Edcor CXSE OPT
  122. Star ground help
  123. What causes my 0D3 to extinguish?
  124. converting UL in triode
  125. Beyer Dynamic BV35570
  126. Lundahl LL1527 phase-splitter
  127. Morgan Jones HPA ...strange startup behaviour
  128. Best Sounding Phono Input Tube
  129. We417+300b
  130. class-A PP amplifier with 2x 845 question
  131. Kismet-300B-amp
  132. Will differential share the same THD characteristics as SE, if same triode is used?
  133. The biggest bunch of tubes ever seen
  134. DHT AC Filament Noise
  135. augmented cathode follower?
  136. Tube amp find in old theater
  137. Is there a better amp kit????
  138. figuring amplification factor of a tube
  139. SE 6l6
  140. Need help
  141. Dynaco (Dynaclone) PA060 transformer
  142. Switching power supply for tube filaments possible???
  143. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  144. DN2540/2535 fun and games
  145. 6P3S SE amp requesting
  146. Newbie needs Magnavox console troubleshooting tips
  147. 6bBYGA x2 as full-wave rectifier?
  148. Digital volume/tone control in Tube amps
  149. plotting load-line for OTL amp?
  150. New SE 6P15P project
  151. New Production Shuguang Type 50 Tubes
  152. Running different tubes
  153. Fairchild 260 rebuild questions
  154. Filament Voltage vs. Hum
  155. drawing a loadline from schematics
  156. Know this tube? 10J12C or 10X12C ...
  157. Precision Fidelity - C7 Mods...help Wanted!
  158. stupid newbie: what is this transformer???
  159. Anyone else having problems with Mercury Magnetics transformers?
  160. EF86-EL84: too much gain!
  161. Balanced Power
  162. GTA 300B SE Mk.II Power Transformer
  163. Tube Shields
  164. Some basic questions about s-5 amp kit mods
  165. Novice Voltage Regulator Question
  166. The Critical Ear
  167. Tube matching service - As found on Craigslist
  168. 6j1 question
  169. Duosonic 40's era record player
  170. 6bl8 el84 nfb question
  171. 6T9 push pull
  172. 12AY7 circuit?
  173. E810F: RIAA circuits
  174. need EL519/6KG6 spice 3f4 model
  175. enough gain for James tone stack
  176. Anyone recognise this amp?
  177. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  178. matched tubes?
  179. List of current production types
  180. Soundcard greater than 24-bit
  181. Replacing Valves Leak Stereo 20
  182. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  183. I Damaged my Amp?
  184. EL84 Triode PP Design
  185. pentode with grid AND cathode tied to gnd?
  186. What d'you put in the PSU chassis, and what in the circuit chassis?
  187. a real no-brainer question about 1/2 tubes
  188. 813 power supply question
  189. OPT-102 - data? (Audio Electronic Supply)
  190. Help me out with a circuit design
  191. Partial Feedback EL84PP - Not quite as expected (yet)
  192. Preamp suggestions - Help a hack have some fun
  193. 6GK6 Ultralinear
  194. Vacuum Rectifier Question
  195. LM4702 meets up with 6550's
  196. 6bx7gt envelope temperature
  197. Counterpoint SA 3 schematic
  198. Tubes measured in microhms = mA..?
  199. Checking ARC SP9
  200. 6J11 Datasheet anyone?
  201. Help cleaning tube pins
  202. Best way to use a PAIR of 6SL7’s to drive a 300B?
  203. preamp cathode bypass cap benefits
  204. EF184 or (EC)L82 radio amplifier?!
  205. 5687 for Aikido
  206. Pre Amplifier Out Sockets
  207. Recommended output valves for this transformer
  208. power tubes and learning SET design
  209. Phono pre-amp Question
  210. TVA-1 cathode resistor value
  211. need power tranformer ideas
  212. Cary Cad-300b Se
  213. newbie question about 7591 cathode bias
  214. 5814 Raytheon Windmill Getter late 50's
  215. Fundamentals of tube amp design
  216. 7868 amp sounds good but low volume
  217. How does class AB2 sound?
  218. 6sn7 brand
  219. Might speaker filters be in the wrong place?
  220. Problem: attenuation after cathodyne and CF
  221. LED bias and differential pairs
  222. Kimmel Mu stage summary sheet
  223. Tube buffer for car audio
  224. Practical PSE thinking.
  225. Kr300bxls
  226. Biggest noval dual triode?
  227. 2 amps with 1 set of speakers?
  228. tubeamp kits
  229. Tripletone amplifier
  230. Help with Shunt Regulation and Noise
  231. Plug 'N' Play B+ time delay
  232. Precision PA conversion help needed
  233. Caps in Voltage divider Heater Bias ?
  234. Looking for Melos triode 200+ schematics
  235. ETF07 brief summary
  236. No response from Vacuumtubes.net
  237. dynakit pam selenium rectifier replacement help
  238. Adjustable Fixed Grid Bias
  239. Best output transformer for 300B
  240. Transconductance of E88CC,6922,6N23P
  241. Finding The Root Of The Problem
  242. Beard P35
  243. purple tube heaters...
  244. Which 12AU7 and 6V6GTs?
  245. 6f2 - 6n1???
  246. Help with Schematic
  247. Class A Push Pull with 6L6GC
  248. EL84 driver tube, with less than 5mA current
  249. Sleeping Sickness
  250. 50L6-GT or 6W6-GT

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