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  1. Power transformer: How Big?
  2. Heater supply options and to Vhk rating of 6X4 & 6203
  3. Hickok TV-7A/U settings for 8417 tube?
  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. peavey heritage vtx how can i make it clean?
  17. Need some help with simulation
  18. output tranny for 6AK6
  19. What tubes for 7K6PP X-former
  20. Ham radio op makes his own triodes
  21. Newbie looking for some advice on mods and tubes for Cayin TA-30
  22. Power Transconductance Amp with Tubes, How?
  23. using the 6BX7 at low'ish current in Aikido
  24. What preamp should I build?
  25. Transformer hookup question.
  26. Home made vacuum tubes
  27. My New EL84 PP
  28. Hammond power transformer fillament rating
  29. Need help with a Russian Triode
  30. TRAFO NEEDED FOR EL84 pp
  31. Difference between 6JN6 (Berning output) and 6JB6 tubes?
  32. 2A3 SE Amp
  33. Soldering tubes directly to PCB?
  34. pa amp distortion at low volume
  35. Transformer input for guitar
  36. Potted transformers
  37. if this can works...
  38. Differential scope probes?
  39. Fisher X100B Iron
  40. Solid state power suppy for CAT SL-1
  41. Help with wiring a Hammond Power Transformer
  42. User manual for GTA SE-40 Tube Amp ?
  43. tube caps that fit.. anyone?
  44. Heater wires through conduit
  45. AB2 guitar amp design questions
  46. Wanted - Svet Sk4A bases
  47. AC Characteristics of Glow Tubes?
  48. Bargain Used Transformers: Where?
  49. Top cap tube users: pics of your amps?
  50. Question
  51. „New“ Pentode – measuring resistance between grids G2 and G3 – any idea?
  52. Audio Transformers 101
  53. Thinking about having a 211 SET amp built, anyone know of good schematics?
  54. 4-65A Triode curves?
  55. Is This A Good Reliable Tube Tester?
  56. Tube projects
  57. Push-Pull Cathode Bias Resistors
  58. Opinion on 300B SETs
  59. So how tattered is your Morgan Jones?
  60. Friend wants to buy a nice tube preamp
  61. Large Oil Capacitors
  62. Too awesome for words
  63. M65 stereo preamp question
  64. nasty buzz in old 35EH5 amp
  65. 6C33C tube stamp
  66. Question about VTV 6SN7 Schematic
  67. Simple Magic Eye Circuit Wanted
  68. Mute circuit on sonic frontier line one
  69. Data point software?
  70. MingDa MC-3R / icon audio la3 preamp mods
  71. Biasing
  72. Compactron characteristic curves?
  73. Analog Metric grounded grid preamp kit
  74. Possible group buy of Lundahl input/phase splitter transformers.
  75. Audio Measurements
  76. B/A 20-4 tube mono block??
  77. Strange find.. help ID?
  78. 813 Thoughts
  79. External 12V heater supply conversion question
  80. My Latest Acquisition
  81. 50/60/whatever cycle hum
  82. OEP input transformers. Anyone used ??
  83. Restack transformer from PP to SE
  84. Se 807??
  85. Min 9-pin or 7-pin sockets to fit octal-sized holes?
  86. Question about phono preamp schematic
  87. Lectron JH50 unknown parts?
  88. Fostex or Car Speakers for My Tube Car Amp
  89. schematics? (also some questions)
  90. Regulated Power Supply. Bipolar, JFET or MOS?
  91. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  92. Blown up resistor in S-5 amp kit...
  93. EZ80 or 81
  94. Gun or Iron?
  95. Shanling SP-80C Problem - DC Spikes?!
  96. Silvertone Organ amp, weird osc section.
  97. Need some advice on a LTP input stage.
  98. CAT 110V to 220 V conversion
  99. When is a compactron not a compactron?
  100. Looking for big Ni lams
  101. Three PP KT88 designs. Which one ... (please;-)
  102. EAR 834P needing repair
  103. How to make non-polarized electrolytic cap?
  104. Toasted PW tranformer?
  105. Tube Cad from Glass-Ware questions
  106. U-links for earthing
  107. Supreme 45 tube amp
  108. Boxing Day Special
  109. Look what Santa brought!
  110. Soft Start for Tubes
  111. Need help to check out this preamp schematic.
  112. What dimensions for perforated AL sheet?
  113. NC pins on submin tubes
  114. Cheap alternative to EF86
  115. MOSFET follower driver oscillation
  116. Fender "Twin Reverb Amp" has no output.
  117. Hi-Fi system build
  118. Car Tube Amp
  119. Tube Identification
  120. Supratek schematics?
  121. Choice of OTL output capacitors
  122. Feedback scheme.
  123. Christmas Eve
  124. Best tubes for Scott 222
  125. HH Scott 222 speaker recommendations and upgrades
  126. mixing coupling cap types
  127. Transformer chassis layout
  128. SimpleSE / Edcor CXSE OPT
  129. Star ground help
  130. What causes my 0D3 to extinguish?
  131. converting UL in triode
  132. Beyer Dynamic BV35570
  133. Lundahl LL1527 phase-splitter
  134. Morgan Jones HPA ...strange startup behaviour
  135. Best Sounding Phono Input Tube
  136. We417+300b
  137. class-A PP amplifier with 2x 845 question
  138. Kismet-300B-amp
  139. Will differential share the same THD characteristics as SE, if same triode is used?
  140. The biggest bunch of tubes ever seen
  141. DHT AC Filament Noise
  142. augmented cathode follower?
  143. Tube amp find in old theater
  144. Is there a better amp kit????
  145. figuring amplification factor of a tube
  146. SE 6l6
  147. Need help
  148. Dynaco (Dynaclone) PA060 transformer
  149. Switching power supply for tube filaments possible???
  150. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  151. DN2540/2535 fun and games
  152. 6P3S SE amp requesting
  153. Newbie needs Magnavox console troubleshooting tips
  154. 6bBYGA x2 as full-wave rectifier?
  155. Digital volume/tone control in Tube amps
  156. plotting load-line for OTL amp?
  157. New SE 6P15P project
  158. New Production Shuguang Type 50 Tubes
  159. Running different tubes
  160. Fairchild 260 rebuild questions
  161. Filament Voltage vs. Hum
  162. drawing a loadline from schematics
  163. Know this tube? 10J12C or 10X12C ...
  164. Precision Fidelity - C7 Mods...help Wanted!
  165. stupid newbie: what is this transformer???
  166. Anyone else having problems with Mercury Magnetics transformers?
  167. EF86-EL84: too much gain!
  168. Balanced Power
  169. GTA 300B SE Mk.II Power Transformer
  170. Tube Shields
  171. Some basic questions about s-5 amp kit mods
  172. Novice Voltage Regulator Question
  173. The Critical Ear
  174. Tube matching service - As found on Craigslist
  175. 6j1 question
  176. Duosonic 40's era record player
  177. 6bl8 el84 nfb question
  178. 6T9 push pull
  179. 12AY7 circuit?
  180. E810F: RIAA circuits
  181. need EL519/6KG6 spice 3f4 model
  182. enough gain for James tone stack
  183. Anyone recognise this amp?
  184. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  185. matched tubes?
  186. List of current production types
  187. Soundcard greater than 24-bit
  188. Replacing Valves Leak Stereo 20
  189. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  190. I Damaged my Amp?
  191. EL84 Triode PP Design
  192. pentode with grid AND cathode tied to gnd?
  193. What d'you put in the PSU chassis, and what in the circuit chassis?
  194. a real no-brainer question about 1/2 tubes
  195. 813 power supply question
  196. ESR of motor-run caps?
  197. OPT-102 - data? (Audio Electronic Supply)
  198. Help me out with a circuit design
  199. Partial Feedback EL84PP - Not quite as expected (yet)
  200. Preamp suggestions - Help a hack have some fun
  201. 6GK6 Ultralinear
  202. Vacuum Rectifier Question
  203. LM4702 meets up with 6550's
  204. 6bx7gt envelope temperature
  205. Counterpoint SA 3 schematic
  206. Tubes measured in microhms = mA..?
  207. Checking ARC SP9
  208. 6J11 Datasheet anyone?
  209. Help cleaning tube pins
  210. Best way to use a PAIR of 6SL7’s to drive a 300B?
  211. preamp cathode bypass cap benefits
  212. EF184 or (EC)L82 radio amplifier?!
  213. 5687 for Aikido
  214. Pre Amplifier Out Sockets
  215. Recommended output valves for this transformer
  216. power tubes and learning SET design
  217. Phono pre-amp Question
  218. TVA-1 cathode resistor value
  219. need power tranformer ideas
  220. Cary Cad-300b Se
  221. newbie question about 7591 cathode bias
  222. 5814 Raytheon Windmill Getter late 50's
  223. Fundamentals of tube amp design
  224. 7868 amp sounds good but low volume
  225. How does class AB2 sound?
  226. 6sn7 brand
  227. Might speaker filters be in the wrong place?
  228. Problem: attenuation after cathodyne and CF
  229. LED bias and differential pairs
  230. Kimmel Mu stage summary sheet
  231. Tube buffer for car audio
  232. Practical PSE thinking.
  233. I need help on a Simple guitar/vocal pre amp.
  234. Kr300bxls
  235. Biggest noval dual triode?
  236. 2 amps with 1 set of speakers?
  237. tubeamp kits
  238. Tripletone amplifier
  239. Tube curves tracer
  240. Help with Shunt Regulation and Noise
  241. Plug 'N' Play B+ time delay
  242. Hot Rod "Bronco" project/TRANSFORMERS
  243. Precision PA conversion help needed
  244. Caps in Voltage divider Heater Bias ?
  245. Looking for Melos triode 200+ schematics
  246. ETF07 brief summary
  247. No response from Vacuumtubes.net
  248. dynakit pam selenium rectifier replacement help
  249. Adjustable Fixed Grid Bias
  250. Best output transformer for 300B

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