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  1. Cloning transformers
  2. EAR509
  3. Schematics of potential interest
  4. super capacitor for dc heater
  5. Need a kit ??
  6. Edcor XSM10K/15K like intestage in tube SE ?
  7. Does anyone know of an LTSpice model for 12B4?
  8. where to order V-Cap ?
  9. Input Volume Pot
  10. Red Army Power-amp
  11. Cloning a HF-60
  12. Michaelson & Austin TVA-1 info
  13. analyze a circuit...quiescence current and R-Load
  14. how to calculate SE Coupling Cap Voltage ?
  15. Mullard ECC88
  16. Engineering vs tube rolling
  17. Diode Peak working voltage ?
  18. Help wanted; combining topologies to "new" 807 PPP design ?
  19. Hybrid Amp
  20. transformer information need help
  21. Replacing a cathode resistor with a CCS
  22. DC offset and relays
  23. Sourcing JJ 300B tubes
  24. Decware Vs Rogue Audio
  25. Global Feedback on Mikael's KT88SE
  26. Generating big voltage swings without 'iron'
  27. 6AS7G Grid Voltage ??
  28. Next project 6EM7
  29. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  30. What to replace these caps with?
  31. 5691 plate value ratings
  32. Bussiness trip to Singapore
  33. Paco mike tube amp
  34. Emergency help with Wes' amp
  35. 2A3 without cathode bypass cap???
  36. Best way to burn-in my new SE xfrmers on the bench?
  37. Need help with my ST70
  38. 6sn7 direct coupled and transformer coupled
  39. Grounded Grid Preamp
  40. Beginner WLTM fixer of 300B hum...
  41. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  42. How to figure gain on split-load with positive feedback?
  43. Mikaels KT88SE & VTV Octal Linestage
  44. idiot needs help making sense of funny squigles - Filmosound
  45. Custom Transformer?
  46. How are this schematic ?
  47. Need help with a Tube preamp Kit (6Z4, 6N3)
  48. data sheets for 7239 and 8068
  49. John Swenson's New BDT preamp
  50. no coupling caps
  51. 6SN7GT brand
  52. tube voltage regulator error amp
  53. driving 845's
  54. Just ordered a Korg EMX-1
  55. Maida for Screen Supply
  56. cracked el34 -> replacement squeals
  57. SimpleSE goes Push Pull
  58. Possibly defective Mullard 12AT7?
  59. Basic measurement question re: shorts
  60. EL84 DC 10Y Project
  61. TubeCad Journal FET CCS
  62. russian tube
  63. pchw 's tube hybrid amp accurian info
  64. 3c24 se amp
  65. schematic of firstsoundaudio pre amp
  66. 300b-98c mesh bias
  67. 6SN7 coin base tubes
  68. tube rectifiers and electrolytic reforming w/ variac
  69. I'm running my leak stereo 20 single ended. WHAT???
  70. Varnish on old transformer
  71. SE parallel output questions
  72. Darius Loftin White explained
  73. New Sensor's "Mullard" EL34 reissue?
  74. Best Way to Control Plate Voltage?
  75. Any Mods for a Noisy Leak Point one Stereo?
  76. tubes for 87db spendor
  77. 4v for rectifier tube
  78. Need help rebuilding old PA amplifier!
  79. inverted?
  80. Old Tube Radio - Restoration Project
  81. quick - need parts retailers Wash DC area
  82. H&K Tubeman Circuit Questions (added schematics!)
  83. Raising filament winding above cathode with a EZ81 in the circuit OK?
  84. Problem with Beard Audio
  85. 100K pot in a preamp?
  86. Power transformer for 6883B tube uses?
  87. Rca Mi-38188
  88. C- Battery Supply
  89. Seperating Preamp from Amp in Integrated Amps
  90. Please help me in getting rid of the buzz.
  91. Tube Phono stage dilema
  92. Grounding with single tap secondary...
  93. VTL - Manley stereo 75
  94. What about KT100 in SE ?
  95. Tube amplifier kit needed to drive low efficiency speaker
  96. feeling very pleased with myself
  97. Quicksilver Retube
  98. My Totem Arro 4 ohm load on KT-88 based amp
  99. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  100. for fans of the EL38 - the E3375
  101. 811a Opt
  102. Pure class-A or class AB?
  103. 12B4 PP Full Differential Amp Notion
  104. My opinion on Audio Note M10 schematic - Japan version
  105. Help, I need your advice - What Next?
  106. Sloppy, Unreadable, Childlike schematics
  107. Anybody going to tomorrow's NVCF fair in Leamington?
  108. Pete's SE E-Linear
  109. 0A2 or 0D3 ?
  110. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  111. LTP feedback
  112. Need help with my super six...
  113. EL509 as a CF
  114. SE Diode
  115. 6FD7, 6BM8 or other
  116. My OLD Project....... cheap tube audio project!!!
  117. tube noise
  118. Fisher 400 questions
  119. RL12P35 amplifier
  120. 6AS7 ppp
  121. 6j5 dc coupled to 12b4a as 2a3 driver
  122. The sound of different EL34īs.
  123. Output transformer and FB
  124. Triode curves for 6AU5
  125. 26/el-84 amp possible..?
  126. Vaic 52B monos
  127. Hour Meter for a Tube Amp..
  128. volume pot replacement
  129. Ampex 600
  130. Tubing Testing...how are these numbers?
  131. No-R No-C Power Supply
  132. Are my Speakers efficient enough for my Amp?
  133. doesn't sound quite right
  134. 6DJ8 alternates?
  135. Is this the dumbest question?
  136. Fuse between B+ and output transformer?
  137. Telefunken Double Label Error...Ever seen this?
  138. 300B Summer Build Question
  139. 1,25kW tube amplifier/modulator
  140. 12sn7 heater-cathode voltage
  141. Toroidal output transformers with screen drive- why not?
  142. Help With 6v6 Spice Model
  143. Different 5AR4's have different voltages and warm up time.
  144. Edcor OPT in S5 Electronics K-16LS kit?
  145. SRPP Powersupply, replace R with choke ?
  146. First tube amp
  147. Best low-signal direct heated triodes?
  148. 25-position switched attenuator using a pair of 5-position switches?
  149. Help with dead Jadis Defy7 Amp
  150. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  151. Remote control for integrated tube amp
  152. EL34 pp "fixed" bias is wandering
  153. US sources Russian Surplus
  154. Convert RCA tuner/pre to high perf AM only
  155. Metal Can 6CA7s
  156. Bypassing B+ in PP amp
  157. Tube shunt regulator for phono amp
  158. speaker that can be driven by tube amp
  159. Need help with volume control.
  160. Flame triodes!
  161. make OPT
  162. Tube GU50 made in Russia
  163. Expectations of new tube specs
  164. DC on preamp input
  165. We're up and going!
  166. Putting serial number on tubes
  167. Which of these tubes is best?
  168. Stepped attenuator resistor calculation software
  169. Help with PSU for tube DAC output stage
  170. single-tube (6GN8) amplifier?
  171. Dukane schematic needed
  172. Bloody pinouts!
  173. Testing 5651WA on the bench
  174. phase splitter concerns ?
  175. phono pre RIAA 2001
  176. Quick output transformer wiring question
  177. Can I.....
  178. Cathode FB P.P. Strange behaviour.
  179. Historic Valve Assembly Vids Mullard Content
  180. Unknown output impedance
  181. Any matching in 12AT7 sections? (SimpleSE)
  182. Over-voltage on heaters...
  183. Stray capacitance of CCS
  184. CCS Design for DHT Filaments
  185. YAQIN MC-10L to Klipsch B-3 Speakers
  186. Sonic effects of tubes
  187. Gubin Valve Stereo Amplifier Question
  188. 6J5 Shootout - which one's best?
  189. Chinese Tube Amps?
  190. 26 DHT users please comment on what you built & use.
  191. auricap Vs musicap (Another Cap Question)
  192. Help with splitter design for 7591 PP
  193. Tron Seven
  194. blue glow on one channel
  195. Suitable Power Trans for 6gw8/6bm8/el84
  196. Dynaco Pas 3 Hiss from HV regulator
  197. Got the build itch again. 80w kt88
  198. lm317 CCS question
  199. LM334z
  200. Parafeeding a Tetrode
  201. Differential stage biasing choice
  202. Got an overshoot problem.
  203. Help! What could possibly be wrong?
  204. Noise - 6J5 - 71a -300B amp
  205. crude, simple and powerful PP-amplifier
  206. What's the appeal of type 80 rectifiers?
  207. 6N7 PP amplifier
  208. 300 KW tube audio amplifire-modulator
  209. Weird amp on ebay
  210. which type of rubber cushion under transformers?
  211. 12at7 LTP CCS
  212. Which value of a potentiometer
  213. Strange circuit - heater hum opt feedback?
  214. Aikido question
  215. Copland CTA-402 Phono Section Comments
  216. Rebiasing my DSL-100
  217. My EL84 SE
  218. K-16LS kit Assembled and Working
  219. Claus Byrith 30W PP
  220. Aikido pre and class T amplifier ...for a newby
  221. Best replacement for Black Gate WKZ?
  222. DIY Jukebox!!
  223. Partial feedback confusion
  224. Anyone used the 7C7 loktal pentode?
  225. Is vacuumtubes.net still in business?
  226. Rectifier Tubes
  227. music angel kt88 tube amp schmetic needed
  228. Next project suggestions
  229. Unpotted Peerless 16309 OPT from Heath W5m
  230. 6au6 Cf
  231. Direct-Coupling Question
  232. Help on CCS PP differential driver stage for SE 845 amp
  233. I'm Looking for this Similar Schematic !
  234. ECL86 preamp critique please
  235. Low cost 6AV5 design questions (long)
  236. Got my tube spice models, and tubed CD player page back on the air
  237. Vsac 2008?
  238. How hot do Hammond chokes get?
  239. Transformer current question
  240. photomultiplier tube - what is this???
  241. Quicksilver
  242. EI-75 End Bells
  243. Svetlana vs. Winged C
  244. Tube Amp Links
  245. McMartin MA-20 mods
  246. Power-tube grid-leak bias
  247. Best/favorite CF NOS noval twin triode?
  248. How can I calculate voltage over cathode resistor?
  249. Grid bias with Class A SE ?
  250. QUADII with DHT

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