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  1. 5691 black base?
  2. DIY vacuum tubes!
  3. Replacing 5-pin DIN inputs on a Telefunken Radio? +weird speaker output?
  4. working out Z out for tube with IXYS IXP10M45S plate load
  5. Review of New S-5 K-16LS Kit
  6. Dumb question.
  7. Suggest KT88 Push-Pull schematics, please.
  8. AIKIDO: Main Thread???
  9. 10Y/45 schematic wanted
  10. Dynaco ST-70 Kits Compaired FYI
  11. Mini amp using 12AU7's as power tubes?
  12. Quick question about star grounding
  13. 3K or 5K OPT in EL35 SimpleSE?
  14. Bogen L60 schematic
  15. k-12
  16. Suggestion on tube for CCS
  17. Whats the model for this?
  18. ECL 82 schematic to suggest
  19. Andrea Ciuffoli's KT88 PP
  20. Looking for comments on Welborne Labs PS10 reg. HT supply
  21. Thoughts and suggestions needed.
  22. PSU shunt capacitor selection
  23. Looking for comments in my first 300B project
  24. Transformer Coupling Questions
  25. ECL82 power supply question
  26. CGV-300B Amp Results...Fun.
  27. power transformer rating and tube current - SimpleSE
  28. Ping Drummerwill.
  29. Taking a Hammond 369BX filament winding to the limit?
  30. Speaker connect: Speakon or banana
  31. 50k or 100k output impedance.
  32. Need help remembering the name of a hybrid amplifier design book
  33. Measuring Output Impedance of Power Supply
  34. knob with long end for alpha pots
  35. IT tutorial n selection
  36. Anybody help identify these tubes
  37. CT wire -quick question
  38. New Amplifier
  39. Master Volume for Active Tube Crossover?
  40. Tube lifetime
  41. Raleigh Audio Preamp - somebody heard ?
  42. Mikael Abdellah SE KT88 ideas and questions
  43. Bogen CHB-35 to conversion to B-12/B-15
  44. Melos triode 200+ looking for spare parts
  45. Opinions on integrated amp project
  46. 6AL5 for clipping diodes?
  47. Confusion over Knight 600 tester numbers
  48. 12AU7A: I need fuzz, overdrive and distortion schematic
  49. 12AT7 vs 12AU7 (interchangeable?)
  50. Angela Electronics - Customer Service
  51. PAS visits the naughty side of town (red lit)
  52. Summing at the LTPI
  53. Test of ECC81 to 83
  54. Was this already posted here? Handmade tubes video
  55. Twist dc filament wire?
  56. Power transformer: How Big?
  57. Heater supply options and to Vhk rating of 6X4 & 6203
  58. Hammond 125ESE and sections
  59. 6P15P hybrid amp schema?
  60. Switching voltage converter for HV supply
  61. VT4C output transformer
  62. Sound Multiplex Amp
  63. Suggestions needed for improving Rogers Cadet II PP power amplifier
  64. Adjustable Line out off of Extra Speaker Jack
  65. Transcendere Audio
  66. Wrong capacitors!
  67. 6LW6 operating points
  68. ?? xmer specs for Scott LC 21 or 130 Preamp for rewind...
  69. Loctal 6SN7?
  70. Need some help with simulation
  71. output tranny for 6AK6
  72. What tubes for 7K6PP X-former
  73. Ham radio op makes his own triodes
  74. Newbie looking for some advice on mods and tubes for Cayin TA-30
  75. Power Transconductance Amp with Tubes, How?
  76. using the 6BX7 at low'ish current in Aikido
  77. What preamp should I build?
  78. Transformer hookup question.
  79. Home made vacuum tubes
  80. My New EL84 PP
  81. Hammond power transformer fillament rating
  82. Need help with a Russian Triode
  83. TRAFO NEEDED FOR EL84 pp
  84. Difference between 6JN6 (Berning output) and 6JB6 tubes?
  85. 2A3 SE Amp
  86. Soldering tubes directly to PCB?
  87. pa amp distortion at low volume
  88. Potted transformers
  89. if this can works...
  90. Differential scope probes?
  91. Fisher X100B Iron
  92. Solid state power suppy for CAT SL-1
  93. Help with wiring a Hammond Power Transformer
  94. User manual for GTA SE-40 Tube Amp ?
  95. tube caps that fit.. anyone?
  96. Heater wires through conduit
  97. Wanted - Svet Sk4A bases
  98. AC Characteristics of Glow Tubes?
  99. Bargain Used Transformers: Where?
  100. Top cap tube users: pics of your amps?
  101. Question
  102. „New“ Pentode – measuring resistance between grids G2 and G3 – any idea?
  103. Audio Transformers 101
  104. Thinking about having a 211 SET amp built, anyone know of good schematics?
  105. 4-65A Triode curves?
  106. Tube projects
  107. Push-Pull Cathode Bias Resistors
  108. Opinion on 300B SETs
  109. So how tattered is your Morgan Jones?
  110. Friend wants to buy a nice tube preamp
  111. Large Oil Capacitors
  112. Too awesome for words
  113. M65 stereo preamp question
  114. nasty buzz in old 35EH5 amp
  115. 6C33C tube stamp
  116. Question about VTV 6SN7 Schematic
  117. Simple Magic Eye Circuit Wanted
  118. Mute circuit on sonic frontier line one
  119. Data point software?
  120. MingDa MC-3R / icon audio la3 preamp mods
  121. Biasing
  122. Compactron characteristic curves?
  123. Analog Metric grounded grid preamp kit
  124. Possible group buy of Lundahl input/phase splitter transformers.
  125. Audio Measurements
  126. B/A 20-4 tube mono block??
  127. Strange find.. help ID?
  128. 813 Thoughts
  129. External 12V heater supply conversion question
  130. My Latest Acquisition
  131. 50/60/whatever cycle hum
  132. OEP input transformers. Anyone used ??
  133. Restack transformer from PP to SE
  134. Se 807??
  135. Min 9-pin or 7-pin sockets to fit octal-sized holes?
  136. Question about phono preamp schematic
  137. Lectron JH50 unknown parts?
  138. Fostex or Car Speakers for My Tube Car Amp
  139. schematics? (also some questions)
  140. Regulated Power Supply. Bipolar, JFET or MOS?
  141. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  142. Blown up resistor in S-5 amp kit...
  143. EZ80 or 81
  144. Gun or Iron?
  145. Shanling SP-80C Problem - DC Spikes?!
  146. Need some advice on a LTP input stage.
  147. CAT 110V to 220 V conversion
  148. When is a compactron not a compactron?
  149. Looking for big Ni lams
  150. Three PP KT88 designs. Which one ... (please;-)
  151. EAR 834P needing repair
  152. Toasted PW tranformer?
  153. Tube Cad from Glass-Ware questions
  154. U-links for earthing
  155. Supreme 45 tube amp
  156. Boxing Day Special
  157. Look what Santa brought!
  158. Soft Start for Tubes
  159. Need help to check out this preamp schematic.
  160. What dimensions for perforated AL sheet?
  161. NC pins on submin tubes
  162. Cheap alternative to EF86
  163. MOSFET follower driver oscillation
  164. Hi-Fi system build
  165. Car Tube Amp
  166. Tube Identification
  167. Supratek schematics?
  168. Choice of OTL output capacitors
  169. Feedback scheme.
  170. Christmas Eve
  171. Best tubes for Scott 222
  172. HH Scott 222 speaker recommendations and upgrades
  173. mixing coupling cap types
  174. Transformer chassis layout
  175. SimpleSE / Edcor CXSE OPT
  176. Star ground help
  177. What causes my 0D3 to extinguish?
  178. converting UL in triode
  179. Beyer Dynamic BV35570
  180. Lundahl LL1527 phase-splitter
  181. Morgan Jones HPA ...strange startup behaviour
  182. Best Sounding Phono Input Tube
  183. We417+300b
  184. class-A PP amplifier with 2x 845 question
  185. Kismet-300B-amp
  186. Will differential share the same THD characteristics as SE, if same triode is used?
  187. The biggest bunch of tubes ever seen
  188. DHT AC Filament Noise
  189. augmented cathode follower?
  190. Tube amp find in old theater
  191. Is there a better amp kit????
  192. figuring amplification factor of a tube
  193. SE 6l6
  194. Need help
  195. Dynaco (Dynaclone) PA060 transformer
  196. Switching power supply for tube filaments possible???
  197. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  198. DN2540/2535 fun and games
  199. 6P3S SE amp requesting
  200. Newbie needs Magnavox console troubleshooting tips
  201. 6bBYGA x2 as full-wave rectifier?
  202. Digital volume/tone control in Tube amps
  203. plotting load-line for OTL amp?
  204. New SE 6P15P project
  205. New Production Shuguang Type 50 Tubes
  206. Running different tubes
  207. Fairchild 260 rebuild questions
  208. Filament Voltage vs. Hum
  209. drawing a loadline from schematics
  210. Know this tube? 10J12C or 10X12C ...
  211. Precision Fidelity - C7 Mods...help Wanted!
  212. stupid newbie: what is this transformer???
  213. Anyone else having problems with Mercury Magnetics transformers?
  214. EF86-EL84: too much gain!
  215. Balanced Power
  216. GTA 300B SE Mk.II Power Transformer
  217. Tube Shields
  218. Some basic questions about s-5 amp kit mods
  219. Novice Voltage Regulator Question
  220. The Critical Ear
  221. Tube matching service - As found on Craigslist
  222. 6j1 question
  223. Duosonic 40's era record player
  224. 6bl8 el84 nfb question
  225. 6T9 push pull
  226. 12AY7 circuit?
  227. E810F: RIAA circuits
  228. need EL519/6KG6 spice 3f4 model
  229. Anyone recognise this amp?
  230. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  231. matched tubes?
  232. List of current production types
  233. Replacing Valves Leak Stereo 20
  234. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  235. I Damaged my Amp?
  236. EL84 Triode PP Design
  237. pentode with grid AND cathode tied to gnd?
  238. What d'you put in the PSU chassis, and what in the circuit chassis?
  239. a real no-brainer question about 1/2 tubes
  240. 813 power supply question
  241. OPT-102 - data? (Audio Electronic Supply)
  242. Help me out with a circuit design
  243. Partial Feedback EL84PP - Not quite as expected (yet)
  244. Preamp suggestions - Help a hack have some fun
  245. 6GK6 Ultralinear
  246. Vacuum Rectifier Question
  247. LM4702 meets up with 6550's
  248. 6bx7gt envelope temperature
  249. Counterpoint SA 3 schematic
  250. Tubes measured in microhms = mA..?

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