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  1. Custom Transformer?
  2. How are this schematic ?
  3. Need help with a Tube preamp Kit (6Z4, 6N3)
  4. data sheets for 7239 and 8068
  5. John Swenson's New BDT preamp
  6. no coupling caps
  7. 6SN7GT brand
  8. tube voltage regulator error amp
  9. driving 845's
  10. Just ordered a Korg EMX-1
  11. Maida for Screen Supply
  12. cracked el34 -> replacement squeals
  13. SimpleSE goes Push Pull
  14. Possibly defective Mullard 12AT7?
  15. Basic measurement question re: shorts
  16. EL84 DC 10Y Project
  17. TubeCad Journal FET CCS
  18. russian tube
  19. Source for #81 light bulb for Hickok Fuse
  20. pchw 's tube hybrid amp accurian info
  21. 3c24 se amp
  22. schematic of firstsoundaudio pre amp
  23. 300b-98c mesh bias
  24. 6SN7 coin base tubes
  25. tube rectifiers and electrolytic reforming w/ variac
  26. I'm running my leak stereo 20 single ended. WHAT???
  27. Varnish on old transformer
  28. SE parallel output questions
  29. Darius Loftin White explained
  30. best capacitor
  31. New Sensor's "Mullard" EL34 reissue?
  32. Best Way to Control Plate Voltage?
  33. Any Mods for a Noisy Leak Point one Stereo?
  34. tubes for 87db spendor
  35. 4v for rectifier tube
  36. Need help rebuilding old PA amplifier!
  37. inverted?
  38. Old Tube Radio - Restoration Project
  39. quick - need parts retailers Wash DC area
  40. H&K Tubeman Circuit Questions (added schematics!)
  41. Marshalls: Why did 600V B+ become 470V?
  42. Raising filament winding above cathode with a EZ81 in the circuit OK?
  43. Problem with Beard Audio
  44. 100K pot in a preamp?
  45. Motor Run Capacitor
  46. Power transformer for 6883B tube uses?
  47. EAGLE PCB help with socket on it
  48. Rca Mi-38188
  49. C- Battery Supply
  50. Seperating Preamp from Amp in Integrated Amps
  51. Wind my own output transformer for 100w bass amp
  52. Please help me in getting rid of the buzz.
  53. Tube Phono stage dilema
  54. Grounding with single tap secondary...
  55. VTL - Manley stereo 75
  56. What about KT100 in SE ?
  57. Tube amplifier kit needed to drive low efficiency speaker
  58. feeling very pleased with myself
  59. Quicksilver Retube
  60. My Totem Arro 4 ohm load on KT-88 based amp
  61. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  62. for fans of the EL38 - the E3375
  63. 811a Opt
  64. Guitar amp for Wes is running!
  65. Pure class-A or class AB?
  66. 12B4 PP Full Differential Amp Notion
  67. My opinion on Audio Note M10 schematic - Japan version
  68. B&K 650 tubecharts
  69. Help, I need your advice - What Next?
  70. Sloppy, Unreadable, Childlike schematics
  71. Anybody going to tomorrow's NVCF fair in Leamington?
  72. Randall RGT 100 Amp Problem
  73. Pete's SE E-Linear
  74. 0A2 or 0D3 ?
  75. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  76. LTP feedback
  77. Need help with my super six...
  78. EL509 as a CF
  79. SE Diode
  80. 6FD7, 6BM8 or other
  81. My OLD Project....... cheap tube audio project!!!
  82. tube noise
  83. Fisher 400 questions
  84. RL12P35 amplifier
  85. 6AS7 ppp
  86. 6j5 dc coupled to 12b4a as 2a3 driver
  87. '81 Twin problems
  88. The sound of different EL34īs.
  89. Output transformer and FB
  90. Triode curves for 6AU5
  91. 26/el-84 amp possible..?
  92. Vaic 52B monos
  93. Hour Meter for a Tube Amp..
  94. volume pot replacement
  95. Any Ampeg SVT-II (non-pro) schematics???
  96. Ampex 600
  97. Tubing Testing...how are these numbers?
  98. No-R No-C Power Supply
  99. Are my Speakers efficient enough for my Amp?
  100. doesn't sound quite right
  101. 6DJ8 alternates?
  102. Is this the dumbest question?
  103. Fuse between B+ and output transformer?
  104. Telefunken Double Label Error...Ever seen this?
  105. 300B Summer Build Question
  106. 1,25kW tube amplifier/modulator
  107. 12sn7 heater-cathode voltage
  108. Toroidal output transformers with screen drive- why not?
  109. Help With 6v6 Spice Model
  110. Different 5AR4's have different voltages and warm up time.
  111. Edcor OPT in S5 Electronics K-16LS kit?
  112. SRPP Powersupply, replace R with choke ?
  113. First tube amp
  114. Best low-signal direct heated triodes?
  115. 25-position switched attenuator using a pair of 5-position switches?
  116. Help with dead Jadis Defy7 Amp
  117. Bring test points to chassis - Tubelab
  118. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  119. Remote control for integrated tube amp
  120. EL34 pp "fixed" bias is wandering
  121. US sources Russian Surplus
  122. 6550 SE class project (continued)
  123. Convert RCA tuner/pre to high perf AM only
  124. Metal Can 6CA7s
  125. Bypassing B+ in PP amp
  126. Tube shunt regulator for phono amp
  127. Triplett tube tester help
  128. Motor run Caps Question
  129. speaker that can be driven by tube amp
  130. Which perf board?
  131. Looking for schematic/info for a Knight KN 3050 PA Amp
  132. Need help with volume control.
  133. Flame triodes!
  134. make OPT
  135. Tube GU50 made in Russia
  136. Expectations of new tube specs
  137. DC on preamp input
  138. We're up and going!
  139. Putting serial number on tubes
  140. Which of these tubes is best?
  141. Stepped attenuator resistor calculation software
  142. Help with PSU for tube DAC output stage
  143. single-tube (6GN8) amplifier?
  144. Dukane schematic needed
  145. Bloody pinouts!
  146. Testing 5651WA on the bench
  147. phase splitter concerns ?
  148. phono pre RIAA 2001
  149. Quick output transformer wiring question
  150. Can I.....
  151. Cathode FB P.P. Strange behaviour.
  152. Historic Valve Assembly Vids Mullard Content
  153. Unknown output impedance
  154. Any matching in 12AT7 sections? (SimpleSE)
  155. Over-voltage on heaters...
  156. Stray capacitance of CCS
  157. CCS Design for DHT Filaments
  158. coupling cap value help for tubelabSE
  159. YAQIN MC-10L to Klipsch B-3 Speakers
  160. Sonic effects of tubes
  161. Gubin Valve Stereo Amplifier Question
  162. 6J5 Shootout - which one's best?
  163. Chinese Tube Amps?
  164. 26 DHT users please comment on what you built & use.
  165. Guitar amp project report
  166. auricap Vs musicap (Another Cap Question)
  167. Help with splitter design for 7591 PP
  168. Question regarding PS ripple in guitar amps - TubeLab?
  169. Tron Seven
  170. blue glow on one channel
  171. Suitable Power Trans for 6gw8/6bm8/el84
  172. Dynaco Pas 3 Hiss from HV regulator
  173. PS Problem: How do I Reduce Voltage?
  174. Got the build itch again. 80w kt88
  175. lm317 CCS question
  176. LM334z
  177. Parafeeding a Tetrode
  178. Differential stage biasing choice
  179. Got an overshoot problem.
  180. Help! What could possibly be wrong?
  181. Noise - 6J5 - 71a -300B amp
  182. crude, simple and powerful PP-amplifier
  183. What's the appeal of type 80 rectifiers?
  184. Guitar amp layout second thoughts
  185. 6N7 PP amplifier
  186. 300 KW tube audio amplifire-modulator
  187. Weird amp on ebay
  188. which type of rubber cushion under transformers?
  189. 12at7 LTP CCS
  190. Which value of a potentiometer
  191. Strange circuit - heater hum opt feedback?
  192. Aikido question
  193. Tubelab SE diode substitute
  194. Copland CTA-402 Phono Section Comments
  195. modified sine wave power inverter
  196. Rebiasing my DSL-100
  197. My EL84 SE
  198. K-16LS kit Assembled and Working
  199. Claus Byrith 30W PP
  200. Aikido pre and class T amplifier ...for a newby
  201. Best replacement for Black Gate WKZ?
  202. DIY Jukebox!!
  203. Partial feedback confusion
  204. Anyone used the 7C7 loktal pentode?
  205. Is vacuumtubes.net still in business?
  206. Rectifier Tubes
  207. music angel kt88 tube amp schmetic needed
  208. Next project suggestions
  209. Unpotted Peerless 16309 OPT from Heath W5m
  210. 6au6 Cf
  211. Direct-Coupling Question
  212. Help on CCS PP differential driver stage for SE 845 amp
  213. I'm Looking for this Similar Schematic !
  214. ECL86 preamp critique please
  215. Low cost 6AV5 design questions (long)
  216. Got my tube spice models, and tubed CD player page back on the air
  217. Vsac 2008?
  218. How hot do Hammond chokes get?
  219. Transformer current question
  220. TubelabSE - best MOSFET choice?
  221. WTD: Reviewer/Writer For DIY Articles
  222. photomultiplier tube - what is this???
  223. Trace Elliot Tube replacment
  224. fun idea: cameras and tubes!
  225. Quicksilver
  226. EI-75 End Bells
  227. Svetlana vs. Winged C
  228. Tube Amp Links
  229. McMartin MA-20 mods
  230. Power-tube grid-leak bias
  231. Best/favorite CF NOS noval twin triode?
  232. How can I calculate voltage over cathode resistor?
  233. Grid bias with Class A SE ?
  234. QUADII with DHT
  235. My First Tube Amp
  236. RH84 vs Magnavox SE?
  237. Rectifier and amp heaters on one supply?
  238. OPT impedance vs. speaker
  239. Power Supply help
  240. Problem with Stealth clone (12A6)
  241. phono stage hiss
  242. Lafayette LT-100 and 6AQ8 tubes
  243. Input potentiometer selection
  244. VSAC 2008 Amp Class
  245. Searching for simple 12bh7/E80cc pre schematic
  246. filament AC vs DC
  247. Novice PS Question: Diode Dilemma
  248. Custom Power Transformer Supplier UK ?
  249. lowering AC heater voltage help?
  250. 60 hz hum, what causes those?

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