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  1. Need help remembering the name of a hybrid amplifier design book
  2. Measuring Output Impedance of Power Supply
  3. knob with long end for alpha pots
  4. IT tutorial n selection
  5. Anybody help identify these tubes
  6. CT wire -quick question
  7. New Amplifier
  8. Master Volume for Active Tube Crossover?
  9. Tube lifetime
  10. Raleigh Audio Preamp - somebody heard ?
  11. Mikael Abdellah SE KT88 ideas and questions
  12. Masco MA-8 for guitar
  13. Bogen CHB-35 to conversion to B-12/B-15
  14. Melos triode 200+ looking for spare parts
  15. Opinions on integrated amp project
  16. 6AL5 for clipping diodes?
  17. Confusion over Knight 600 tester numbers
  18. 12AU7A: I need fuzz, overdrive and distortion schematic
  19. 12AT7 vs 12AU7 (interchangeable?)
  20. Angela Electronics - Customer Service
  21. PAS visits the naughty side of town (red lit)
  22. Summing at the LTPI
  23. Test of ECC81 to 83
  24. Polypropylene caps
  25. Was this already posted here? Handmade tubes video
  26. Twist dc filament wire?
  27. Power transformer: How Big?
  28. Heater supply options and to Vhk rating of 6X4 & 6203
  29. Hickok TV-7A/U settings for 8417 tube?
  30. Hammond 125ESE and sections
  31. 6P15P hybrid amp schema?
  32. Switching voltage converter for HV supply
  33. VT4C output transformer
  34. Sound Multiplex Amp
  35. Suggestions needed for improving Rogers Cadet II PP power amplifier
  36. Adjustable Line out off of Extra Speaker Jack
  37. Transcendere Audio
  38. Wrong capacitors!
  39. 6LW6 operating points
  40. ?? xmer specs for Scott LC 21 or 130 Preamp for rewind...
  41. Loctal 6SN7?
  42. peavey heritage vtx how can i make it clean?
  43. Need some help with simulation
  44. output tranny for 6AK6
  45. What tubes for 7K6PP X-former
  46. Ham radio op makes his own triodes
  47. Newbie looking for some advice on mods and tubes for Cayin TA-30
  48. Power Transconductance Amp with Tubes, How?
  49. using the 6BX7 at low'ish current in Aikido
  50. What preamp should I build?
  51. Transformer hookup question.
  52. Home made vacuum tubes
  53. My New EL84 PP
  54. Hammond power transformer fillament rating
  55. Need help with a Russian Triode
  56. TRAFO NEEDED FOR EL84 pp
  57. Difference between 6JN6 (Berning output) and 6JB6 tubes?
  58. 2A3 SE Amp
  59. Soldering tubes directly to PCB?
  60. pa amp distortion at low volume
  61. Transformer input for guitar
  62. Potted transformers
  63. if this can works...
  64. Differential scope probes?
  65. Fisher X100B Iron
  66. Solid state power suppy for CAT SL-1
  67. Help with wiring a Hammond Power Transformer
  68. User manual for GTA SE-40 Tube Amp ?
  69. tube caps that fit.. anyone?
  70. Heater wires through conduit
  71. AB2 guitar amp design questions
  72. Wanted - Svet Sk4A bases
  73. AC Characteristics of Glow Tubes?
  74. Bargain Used Transformers: Where?
  75. Top cap tube users: pics of your amps?
  76. Question
  77. „New“ Pentode – measuring resistance between grids G2 and G3 – any idea?
  78. Audio Transformers 101
  79. Thinking about having a 211 SET amp built, anyone know of good schematics?
  80. 4-65A Triode curves?
  81. Is This A Good Reliable Tube Tester?
  82. Tube projects
  83. Push-Pull Cathode Bias Resistors
  84. Opinion on 300B SETs
  85. So how tattered is your Morgan Jones?
  86. Friend wants to buy a nice tube preamp
  87. Large Oil Capacitors
  88. Too awesome for words
  89. M65 stereo preamp question
  90. nasty buzz in old 35EH5 amp
  91. 6C33C tube stamp
  92. Question about VTV 6SN7 Schematic
  93. Simple Magic Eye Circuit Wanted
  94. Mute circuit on sonic frontier line one
  95. Data point software?
  96. MingDa MC-3R / icon audio la3 preamp mods
  97. Biasing
  98. Compactron characteristic curves?
  99. Analog Metric grounded grid preamp kit
  100. Possible group buy of Lundahl input/phase splitter transformers.
  101. Audio Measurements
  102. B/A 20-4 tube mono block??
  103. Strange find.. help ID?
  104. 813 Thoughts
  105. External 12V heater supply conversion question
  106. My Latest Acquisition
  107. 50/60/whatever cycle hum
  108. OEP input transformers. Anyone used ??
  109. Restack transformer from PP to SE
  110. Se 807??
  111. Min 9-pin or 7-pin sockets to fit octal-sized holes?
  112. Question about phono preamp schematic
  113. Lectron JH50 unknown parts?
  114. Fostex or Car Speakers for My Tube Car Amp
  115. schematics? (also some questions)
  116. Regulated Power Supply. Bipolar, JFET or MOS?
  117. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  118. Blown up resistor in S-5 amp kit...
  119. EZ80 or 81
  120. Gun or Iron?
  121. Shanling SP-80C Problem - DC Spikes?!
  122. Silvertone Organ amp, weird osc section.
  123. Need some advice on a LTP input stage.
  124. CAT 110V to 220 V conversion
  125. When is a compactron not a compactron?
  126. Looking for big Ni lams
  127. Three PP KT88 designs. Which one ... (please;-)
  128. EAR 834P needing repair
  129. How to make non-polarized electrolytic cap?
  130. Toasted PW tranformer?
  131. Tube Cad from Glass-Ware questions
  132. U-links for earthing
  133. Supreme 45 tube amp
  134. Boxing Day Special
  135. Look what Santa brought!
  136. Soft Start for Tubes
  137. Need help to check out this preamp schematic.
  138. What dimensions for perforated AL sheet?
  139. NC pins on submin tubes
  140. Cheap alternative to EF86
  141. MOSFET follower driver oscillation
  142. Fender "Twin Reverb Amp" has no output.
  143. Hi-Fi system build
  144. Car Tube Amp
  145. Tube Identification
  146. Supratek schematics?
  147. Choice of OTL output capacitors
  148. Feedback scheme.
  149. Christmas Eve
  150. Best tubes for Scott 222
  151. HH Scott 222 speaker recommendations and upgrades
  152. mixing coupling cap types
  153. Transformer chassis layout
  154. SimpleSE / Edcor CXSE OPT
  155. Star ground help
  156. What causes my 0D3 to extinguish?
  157. converting UL in triode
  158. Beyer Dynamic BV35570
  159. Lundahl LL1527 phase-splitter
  160. Morgan Jones HPA ...strange startup behaviour
  161. Best Sounding Phono Input Tube
  162. We417+300b
  163. class-A PP amplifier with 2x 845 question
  164. Kismet-300B-amp
  165. Will differential share the same THD characteristics as SE, if same triode is used?
  166. The biggest bunch of tubes ever seen
  167. DHT AC Filament Noise
  168. augmented cathode follower?
  169. Tube amp find in old theater
  170. Is there a better amp kit????
  171. figuring amplification factor of a tube
  172. SE 6l6
  173. Need help
  174. Dynaco (Dynaclone) PA060 transformer
  175. Switching power supply for tube filaments possible???
  176. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  177. DN2540/2535 fun and games
  178. 6P3S SE amp requesting
  179. Newbie needs Magnavox console troubleshooting tips
  180. 6bBYGA x2 as full-wave rectifier?
  181. Digital volume/tone control in Tube amps
  182. plotting load-line for OTL amp?
  183. New SE 6P15P project
  184. New Production Shuguang Type 50 Tubes
  185. Running different tubes
  186. Fairchild 260 rebuild questions
  187. Filament Voltage vs. Hum
  188. drawing a loadline from schematics
  189. Know this tube? 10J12C or 10X12C ...
  190. Precision Fidelity - C7 Mods...help Wanted!
  191. stupid newbie: what is this transformer???
  192. Anyone else having problems with Mercury Magnetics transformers?
  193. EF86-EL84: too much gain!
  194. Balanced Power
  195. GTA 300B SE Mk.II Power Transformer
  196. Tube Shields
  197. Some basic questions about s-5 amp kit mods
  198. Novice Voltage Regulator Question
  199. The Critical Ear
  200. Tube matching service - As found on Craigslist
  201. 6j1 question
  202. Duosonic 40's era record player
  203. 6bl8 el84 nfb question
  204. 6T9 push pull
  205. 12AY7 circuit?
  206. E810F: RIAA circuits
  207. need EL519/6KG6 spice 3f4 model
  208. enough gain for James tone stack
  209. Anyone recognise this amp?
  210. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  211. matched tubes?
  212. List of current production types
  213. Soundcard greater than 24-bit
  214. Replacing Valves Leak Stereo 20
  215. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  216. I Damaged my Amp?
  217. EL84 Triode PP Design
  218. pentode with grid AND cathode tied to gnd?
  219. What d'you put in the PSU chassis, and what in the circuit chassis?
  220. a real no-brainer question about 1/2 tubes
  221. 813 power supply question
  222. ESR of motor-run caps?
  223. OPT-102 - data? (Audio Electronic Supply)
  224. Help me out with a circuit design
  225. Partial Feedback EL84PP - Not quite as expected (yet)
  226. Preamp suggestions - Help a hack have some fun
  227. 6GK6 Ultralinear
  228. Vacuum Rectifier Question
  229. LM4702 meets up with 6550's
  230. 6bx7gt envelope temperature
  231. Counterpoint SA 3 schematic
  232. Tubes measured in microhms = mA..?
  233. Checking ARC SP9
  234. 6J11 Datasheet anyone?
  235. Help cleaning tube pins
  236. Best way to use a PAIR of 6SL7’s to drive a 300B?
  237. preamp cathode bypass cap benefits
  238. EF184 or (EC)L82 radio amplifier?!
  239. 5687 for Aikido
  240. Pre Amplifier Out Sockets
  241. Recommended output valves for this transformer
  242. power tubes and learning SET design
  243. Phono pre-amp Question
  244. TVA-1 cathode resistor value
  245. need power tranformer ideas
  246. Cary Cad-300b Se
  247. newbie question about 7591 cathode bias
  248. 5814 Raytheon Windmill Getter late 50's
  249. Fundamentals of tube amp design
  250. 7868 amp sounds good but low volume

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