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  1. Melos triode 200+ looking for spare parts
  2. Opinions on integrated amp project
  3. 6AL5 for clipping diodes?
  4. Confusion over Knight 600 tester numbers
  5. 12AU7A: I need fuzz, overdrive and distortion schematic
  6. 12AT7 vs 12AU7 (interchangeable?)
  7. Angela Electronics - Customer Service
  8. PAS visits the naughty side of town (red lit)
  9. Summing at the LTPI
  10. Test of ECC81 to 83
  11. Polypropylene caps
  12. Was this already posted here? Handmade tubes video
  13. Twist dc filament wire?
  14. Power transformer: How Big?
  15. Heater supply options and to Vhk rating of 6X4 & 6203
  16. Hickok TV-7A/U settings for 8417 tube?
  17. Hammond 125ESE and sections
  18. 6P15P hybrid amp schema?
  19. Switching voltage converter for HV supply
  20. VT4C output transformer
  21. Sound Multiplex Amp
  22. Suggestions needed for improving Rogers Cadet II PP power amplifier
  23. Adjustable Line out off of Extra Speaker Jack
  24. Transcendere Audio
  25. Wrong capacitors!
  26. 6LW6 operating points
  27. ?? xmer specs for Scott LC 21 or 130 Preamp for rewind...
  28. Loctal 6SN7?
  29. peavey heritage vtx how can i make it clean?
  30. Need some help with simulation
  31. output tranny for 6AK6
  32. What tubes for 7K6PP X-former
  33. Ham radio op makes his own triodes
  34. Newbie looking for some advice on mods and tubes for Cayin TA-30
  35. Power Transconductance Amp with Tubes, How?
  36. using the 6BX7 at low'ish current in Aikido
  37. What preamp should I build?
  38. Transformer hookup question.
  39. Home made vacuum tubes
  40. My New EL84 PP
  41. Hammond power transformer fillament rating
  42. Need help with a Russian Triode
  43. TRAFO NEEDED FOR EL84 pp
  44. Difference between 6JN6 (Berning output) and 6JB6 tubes?
  45. 2A3 SE Amp
  46. Soldering tubes directly to PCB?
  47. pa amp distortion at low volume
  48. Transformer input for guitar
  49. Potted transformers
  50. if this can works...
  51. Differential scope probes?
  52. Fisher X100B Iron
  53. Solid state power suppy for CAT SL-1
  54. Help with wiring a Hammond Power Transformer
  55. User manual for GTA SE-40 Tube Amp ?
  56. tube caps that fit.. anyone?
  57. Heater wires through conduit
  58. AB2 guitar amp design questions
  59. Wanted - Svet Sk4A bases
  60. AC Characteristics of Glow Tubes?
  61. Bargain Used Transformers: Where?
  62. Top cap tube users: pics of your amps?
  63. Question
  64. „New“ Pentode – measuring resistance between grids G2 and G3 – any idea?
  65. Audio Transformers 101
  66. Thinking about having a 211 SET amp built, anyone know of good schematics?
  67. 4-65A Triode curves?
  68. Is This A Good Reliable Tube Tester?
  69. Tube projects
  70. Push-Pull Cathode Bias Resistors
  71. Opinion on 300B SETs
  72. So how tattered is your Morgan Jones?
  73. Friend wants to buy a nice tube preamp
  74. Large Oil Capacitors
  75. Too awesome for words
  76. M65 stereo preamp question
  77. nasty buzz in old 35EH5 amp
  78. 6C33C tube stamp
  79. Question about VTV 6SN7 Schematic
  80. Simple Magic Eye Circuit Wanted
  81. Mute circuit on sonic frontier line one
  82. Data point software?
  83. MingDa MC-3R / icon audio la3 preamp mods
  84. Biasing
  85. Compactron characteristic curves?
  86. Analog Metric grounded grid preamp kit
  87. Possible group buy of Lundahl input/phase splitter transformers.
  88. Audio Measurements
  89. B/A 20-4 tube mono block??
  90. Strange find.. help ID?
  91. 813 Thoughts
  92. External 12V heater supply conversion question
  93. My Latest Acquisition
  94. 50/60/whatever cycle hum
  95. OEP input transformers. Anyone used ??
  96. Restack transformer from PP to SE
  97. Se 807??
  98. Min 9-pin or 7-pin sockets to fit octal-sized holes?
  99. Question about phono preamp schematic
  100. Lectron JH50 unknown parts?
  101. Fostex or Car Speakers for My Tube Car Amp
  102. schematics? (also some questions)
  103. Regulated Power Supply. Bipolar, JFET or MOS?
  104. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  105. Blown up resistor in S-5 amp kit...
  106. EZ80 or 81
  107. Gun or Iron?
  108. Shanling SP-80C Problem - DC Spikes?!
  109. Silvertone Organ amp, weird osc section.
  110. Need some advice on a LTP input stage.
  111. CAT 110V to 220 V conversion
  112. When is a compactron not a compactron?
  113. Looking for big Ni lams
  114. Three PP KT88 designs. Which one ... (please;-)
  115. EAR 834P needing repair
  116. How to make non-polarized electrolytic cap?
  117. Toasted PW tranformer?
  118. Tube Cad from Glass-Ware questions
  119. U-links for earthing
  120. Supreme 45 tube amp
  121. Boxing Day Special
  122. Look what Santa brought!
  123. Soft Start for Tubes
  124. Need help to check out this preamp schematic.
  125. What dimensions for perforated AL sheet?
  126. NC pins on submin tubes
  127. Cheap alternative to EF86
  128. MOSFET follower driver oscillation
  129. Fender "Twin Reverb Amp" has no output.
  130. Hi-Fi system build
  131. Car Tube Amp
  132. Tube Identification
  133. Supratek schematics?
  134. Choice of OTL output capacitors
  135. Feedback scheme.
  136. Christmas Eve
  137. Best tubes for Scott 222
  138. HH Scott 222 speaker recommendations and upgrades
  139. mixing coupling cap types
  140. Transformer chassis layout
  141. SimpleSE / Edcor CXSE OPT
  142. Star ground help
  143. What causes my 0D3 to extinguish?
  144. converting UL in triode
  145. Beyer Dynamic BV35570
  146. Lundahl LL1527 phase-splitter
  147. Morgan Jones HPA ...strange startup behaviour
  148. Best Sounding Phono Input Tube
  149. We417+300b
  150. class-A PP amplifier with 2x 845 question
  151. Kismet-300B-amp
  152. Will differential share the same THD characteristics as SE, if same triode is used?
  153. The biggest bunch of tubes ever seen
  154. DHT AC Filament Noise
  155. augmented cathode follower?
  156. Tube amp find in old theater
  157. Is there a better amp kit????
  158. figuring amplification factor of a tube
  159. SE 6l6
  160. Need help
  161. Dynaco (Dynaclone) PA060 transformer
  162. Switching power supply for tube filaments possible???
  163. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  164. DN2540/2535 fun and games
  165. 6P3S SE amp requesting
  166. Newbie needs Magnavox console troubleshooting tips
  167. 6bBYGA x2 as full-wave rectifier?
  168. Digital volume/tone control in Tube amps
  169. plotting load-line for OTL amp?
  170. New SE 6P15P project
  171. New Production Shuguang Type 50 Tubes
  172. Running different tubes
  173. Fairchild 260 rebuild questions
  174. Filament Voltage vs. Hum
  175. drawing a loadline from schematics
  176. Know this tube? 10J12C or 10X12C ...
  177. Precision Fidelity - C7 Mods...help Wanted!
  178. stupid newbie: what is this transformer???
  179. Anyone else having problems with Mercury Magnetics transformers?
  180. EF86-EL84: too much gain!
  181. Balanced Power
  182. GTA 300B SE Mk.II Power Transformer
  183. Tube Shields
  184. Some basic questions about s-5 amp kit mods
  185. Novice Voltage Regulator Question
  186. The Critical Ear
  187. Tube matching service - As found on Craigslist
  188. 6j1 question
  189. Duosonic 40's era record player
  190. 6bl8 el84 nfb question
  191. 6T9 push pull
  192. 12AY7 circuit?
  193. E810F: RIAA circuits
  194. need EL519/6KG6 spice 3f4 model
  195. enough gain for James tone stack
  196. Anyone recognise this amp?
  197. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  198. matched tubes?
  199. List of current production types
  200. Soundcard greater than 24-bit
  201. Replacing Valves Leak Stereo 20
  202. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  203. I Damaged my Amp?
  204. EL84 Triode PP Design
  205. pentode with grid AND cathode tied to gnd?
  206. What d'you put in the PSU chassis, and what in the circuit chassis?
  207. a real no-brainer question about 1/2 tubes
  208. 813 power supply question
  209. ESR of motor-run caps?
  210. OPT-102 - data? (Audio Electronic Supply)
  211. Help me out with a circuit design
  212. Partial Feedback EL84PP - Not quite as expected (yet)
  213. Preamp suggestions - Help a hack have some fun
  214. 6GK6 Ultralinear
  215. Vacuum Rectifier Question
  216. LM4702 meets up with 6550's
  217. 6bx7gt envelope temperature
  218. Counterpoint SA 3 schematic
  219. Tubes measured in microhms = mA..?
  220. Checking ARC SP9
  221. 6J11 Datasheet anyone?
  222. Help cleaning tube pins
  223. Best way to use a PAIR of 6SL7’s to drive a 300B?
  224. preamp cathode bypass cap benefits
  225. EF184 or (EC)L82 radio amplifier?!
  226. 5687 for Aikido
  227. Pre Amplifier Out Sockets
  228. Recommended output valves for this transformer
  229. power tubes and learning SET design
  230. Phono pre-amp Question
  231. TVA-1 cathode resistor value
  232. need power tranformer ideas
  233. Cary Cad-300b Se
  234. newbie question about 7591 cathode bias
  235. 5814 Raytheon Windmill Getter late 50's
  236. Fundamentals of tube amp design
  237. 7868 amp sounds good but low volume
  238. How does class AB2 sound?
  239. 6sn7 brand
  240. Might speaker filters be in the wrong place?
  241. Problem: attenuation after cathodyne and CF
  242. LED bias and differential pairs
  243. Kimmel Mu stage summary sheet
  244. Tube buffer for car audio
  245. Practical PSE thinking.
  246. I need help on a Simple guitar/vocal pre amp.
  247. Kr300bxls
  248. Biggest noval dual triode?
  249. 2 amps with 1 set of speakers?
  250. tubeamp kits

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