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  1. Bargain Used Transformers: Where?
  2. Top cap tube users: pics of your amps?
  3. Question
  4. „New“ Pentode – measuring resistance between grids G2 and G3 – any idea?
  5. Audio Transformers 101
  6. Thinking about having a 211 SET amp built, anyone know of good schematics?
  7. 4-65A Triode curves?
  8. Is This A Good Reliable Tube Tester?
  9. Tube projects
  10. Push-Pull Cathode Bias Resistors
  11. Opinion on 300B SETs
  12. So how tattered is your Morgan Jones?
  13. Friend wants to buy a nice tube preamp
  14. Large Oil Capacitors
  15. Too awesome for words
  16. M65 stereo preamp question
  17. nasty buzz in old 35EH5 amp
  18. 6C33C tube stamp
  19. Question about VTV 6SN7 Schematic
  20. Simple Magic Eye Circuit Wanted
  21. Mute circuit on sonic frontier line one
  22. Data point software?
  23. MingDa MC-3R / icon audio la3 preamp mods
  24. Biasing
  25. Compactron characteristic curves?
  26. Analog Metric grounded grid preamp kit
  27. Possible group buy of Lundahl input/phase splitter transformers.
  28. Audio Measurements
  29. B/A 20-4 tube mono block??
  30. Strange find.. help ID?
  31. 813 Thoughts
  32. External 12V heater supply conversion question
  33. My Latest Acquisition
  34. 50/60/whatever cycle hum
  35. OEP input transformers. Anyone used ??
  36. Restack transformer from PP to SE
  37. Se 807??
  38. Min 9-pin or 7-pin sockets to fit octal-sized holes?
  39. Question about phono preamp schematic
  40. Lectron JH50 unknown parts?
  41. Fostex or Car Speakers for My Tube Car Amp
  42. schematics? (also some questions)
  43. Regulated Power Supply. Bipolar, JFET or MOS?
  44. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  45. Blown up resistor in S-5 amp kit...
  46. EZ80 or 81
  47. Gun or Iron?
  48. Shanling SP-80C Problem - DC Spikes?!
  49. Silvertone Organ amp, weird osc section.
  50. Need some advice on a LTP input stage.
  51. CAT 110V to 220 V conversion
  52. When is a compactron not a compactron?
  53. Looking for big Ni lams
  54. Three PP KT88 designs. Which one ... (please;-)
  55. EAR 834P needing repair
  56. How to make non-polarized electrolytic cap?
  57. Toasted PW tranformer?
  58. Tube Cad from Glass-Ware questions
  59. U-links for earthing
  60. Supreme 45 tube amp
  61. Boxing Day Special
  62. Look what Santa brought!
  63. Soft Start for Tubes
  64. Need help to check out this preamp schematic.
  65. What dimensions for perforated AL sheet?
  66. NC pins on submin tubes
  67. Cheap alternative to EF86
  68. MOSFET follower driver oscillation
  69. Fender "Twin Reverb Amp" has no output.
  70. Hi-Fi system build
  71. Car Tube Amp
  72. Tube Identification
  73. Supratek schematics?
  74. Choice of OTL output capacitors
  75. Feedback scheme.
  76. Christmas Eve
  77. Best tubes for Scott 222
  78. HH Scott 222 speaker recommendations and upgrades
  79. mixing coupling cap types
  80. Transformer chassis layout
  81. SimpleSE / Edcor CXSE OPT
  82. Star ground help
  83. What causes my 0D3 to extinguish?
  84. converting UL in triode
  85. Beyer Dynamic BV35570
  86. Lundahl LL1527 phase-splitter
  87. Morgan Jones HPA ...strange startup behaviour
  88. Best Sounding Phono Input Tube
  89. We417+300b
  90. class-A PP amplifier with 2x 845 question
  91. Kismet-300B-amp
  92. Will differential share the same THD characteristics as SE, if same triode is used?
  93. The biggest bunch of tubes ever seen
  94. DHT AC Filament Noise
  95. augmented cathode follower?
  96. Tube amp find in old theater
  97. Is there a better amp kit????
  98. figuring amplification factor of a tube
  99. SE 6l6
  100. Need help
  101. Dynaco (Dynaclone) PA060 transformer
  102. Switching power supply for tube filaments possible???
  103. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  104. DN2540/2535 fun and games
  105. 6P3S SE amp requesting
  106. Newbie needs Magnavox console troubleshooting tips
  107. 6bBYGA x2 as full-wave rectifier?
  108. Digital volume/tone control in Tube amps
  109. plotting load-line for OTL amp?
  110. New SE 6P15P project
  111. New Production Shuguang Type 50 Tubes
  112. Running different tubes
  113. Fairchild 260 rebuild questions
  114. Filament Voltage vs. Hum
  115. drawing a loadline from schematics
  116. Know this tube? 10J12C or 10X12C ...
  117. Precision Fidelity - C7 Mods...help Wanted!
  118. stupid newbie: what is this transformer???
  119. Anyone else having problems with Mercury Magnetics transformers?
  120. EF86-EL84: too much gain!
  121. Balanced Power
  122. GTA 300B SE Mk.II Power Transformer
  123. Tube Shields
  124. Some basic questions about s-5 amp kit mods
  125. Novice Voltage Regulator Question
  126. The Critical Ear
  127. Tube matching service - As found on Craigslist
  128. 6j1 question
  129. Duosonic 40's era record player
  130. 6bl8 el84 nfb question
  131. 6T9 push pull
  132. 12AY7 circuit?
  133. E810F: RIAA circuits
  134. need EL519/6KG6 spice 3f4 model
  135. enough gain for James tone stack
  136. Anyone recognise this amp?
  137. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  138. matched tubes?
  139. List of current production types
  140. Soundcard greater than 24-bit
  141. Replacing Valves Leak Stereo 20
  142. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  143. I Damaged my Amp?
  144. EL84 Triode PP Design
  145. pentode with grid AND cathode tied to gnd?
  146. What d'you put in the PSU chassis, and what in the circuit chassis?
  147. a real no-brainer question about 1/2 tubes
  148. 813 power supply question
  149. ESR of motor-run caps?
  150. OPT-102 - data? (Audio Electronic Supply)
  151. Help me out with a circuit design
  152. Partial Feedback EL84PP - Not quite as expected (yet)
  153. Preamp suggestions - Help a hack have some fun
  154. 6GK6 Ultralinear
  155. Vacuum Rectifier Question
  156. LM4702 meets up with 6550's
  157. 6bx7gt envelope temperature
  158. Counterpoint SA 3 schematic
  159. Tubes measured in microhms = mA..?
  160. Checking ARC SP9
  161. 6J11 Datasheet anyone?
  162. Help cleaning tube pins
  163. Best way to use a PAIR of 6SL7’s to drive a 300B?
  164. preamp cathode bypass cap benefits
  165. EF184 or (EC)L82 radio amplifier?!
  166. 5687 for Aikido
  167. Pre Amplifier Out Sockets
  168. Recommended output valves for this transformer
  169. power tubes and learning SET design
  170. Phono pre-amp Question
  171. TVA-1 cathode resistor value
  172. need power tranformer ideas
  173. Cary Cad-300b Se
  174. newbie question about 7591 cathode bias
  175. 5814 Raytheon Windmill Getter late 50's
  176. Fundamentals of tube amp design
  177. 7868 amp sounds good but low volume
  178. How does class AB2 sound?
  179. 6sn7 brand
  180. Might speaker filters be in the wrong place?
  181. Problem: attenuation after cathodyne and CF
  182. LED bias and differential pairs
  183. Kimmel Mu stage summary sheet
  184. Tube buffer for car audio
  185. Practical PSE thinking.
  186. I need help on a Simple guitar/vocal pre amp.
  187. Kr300bxls
  188. Biggest noval dual triode?
  189. 2 amps with 1 set of speakers?
  190. tubeamp kits
  191. Tripletone amplifier
  192. Tube curves tracer
  193. Help with Shunt Regulation and Noise
  194. Plug 'N' Play B+ time delay
  195. Hot Rod "Bronco" project/TRANSFORMERS
  196. Precision PA conversion help needed
  197. Caps in Voltage divider Heater Bias ?
  198. Looking for Melos triode 200+ schematics
  199. ETF07 brief summary
  200. No response from Vacuumtubes.net
  201. dynakit pam selenium rectifier replacement help
  202. Adjustable Fixed Grid Bias
  203. Best output transformer for 300B
  204. Transconductance of E88CC,6922,6N23P
  205. Finding The Root Of The Problem
  206. Beard P35
  207. purple tube heaters...
  208. Which 12AU7 and 6V6GTs?
  209. 6f2 - 6n1???
  210. Help with Schematic
  211. Class A Push Pull with 6L6GC
  212. EL84 driver tube, with less than 5mA current
  213. Sleeping Sickness
  214. 50L6-GT or 6W6-GT
  215. Help ID this transformer
  216. Tube dropping - Help?
  217. For anyone running a K-502 with a FR driver
  218. Active crossover
  219. General guidence building guitar amp
  220. Pounds, Shillings and Pence
  221. Trying to learn something, against my better judgment
  222. Battery grid bias to fixed bias in Toccato?
  223. PLS take a look!
  224. Use for 5K:8 PP OPT?
  225. Low amp Impedance input and high dac output
  226. The Magic of a Name
  227. which edition of Morgan Jones' books?
  228. altec 1530 schematic
  229. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  230. 6HB6/6HA& Spud?
  231. schematic diagram golden tube se40 for repair! help
  232. Reliable B+ PSU for pro preamp
  233. Help me find some info please
  234. Some tube radios
  235. Electro Harmonix 300b...shorting problems?
  236. Aikido linestage tube choice? (again)
  237. Teeco 1220??
  238. magic smoke pilot aa903
  239. PP bias balance pot
  240. Jolida JD 502A
  241. Cathode Bias for SimpleSE
  242. TRemPre malfunctioning
  243. HV benchtop power supply, help on opamp setup
  244. Transcendar Output Transformers ST70
  245. Unofficial Tube Market Survey
  246. testing 6DJ8s
  247. 6L6 AB PPP stage; does it make sense?
  248. 7868 tubes - replace with 6L6's?
  249. Vintage Amp...too much gain on CD
  250. ETF07 - Last possibility to join