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  1. Aikido Phono Stage
  2. Using an El84 as a driver
  3. Transfromer value of this 300B circuit
  4. Chassis Layout & PS questions
  5. help needed for 1st DIY tube amp - Sakuma 845 SE
  6. Ideas for 4v filament triodes/pentodes
  7. Comments on Power Amp Viability
  8. Balanced active crossover advice
  9. The Tube Center
  10. Help1 with a 3 channel 2a3 amplifier
  11. volume control hum/noise
  12. PS choke magnetic induction
  13. Circlotron power supply question
  14. Autoformer as choke?
  15. E182CC
  16. Grundig Fine Arts OTL Amplifier
  17. Damper diodes, 6ax4 and or 6w4?
  18. Knight 333 / Pioneer SX 34B info needed.
  19. Gargantuan Linestage Output Capacitors
  20. Quad II Restoration
  21. Help identifying a tube.
  22. Tube filaments in series?
  23. Design of Resonant Input Choke PSU
  24. Dissimilar triode
  25. How important is the quality of a triode used as a cathode follower
  26. EL34B tubes
  27. Why not so common to split dual triodes between channels?
  28. In search of power supply schematic for phono preamp
  29. General Electric vs Toshiba 6L6's
  30. Audio Research Dual 75 Capacitor Source?
  31. Choosing A Cathode bypass capacitor
  32. 12AU7 SRPP buffer suggestions
  33. Pentode/triode switch question
  34. Lundahll 1669A Secondary voltage???
  35. Substituting tube rectifiers by silicon
  36. newbie question: is the connection to the output xformer somewhat odd?
  37. All quiet on the SN front - about darned time!
  38. Estimating power output
  39. Looking for KT88 Amplifier Schematic by Mikael Abdellah
  40. Comments on passive pre and cables
  41. curvecaptor
  42. 6b4g pushpull build!newbie
  43. Need help; I have "dog leg" shaped waveform on my amp
  44. Output Transformer Question?
  45. Urgent OT HELP needed ASAP please
  46. Questions on Triode Strapping
  47. Morgan Jones BALANCED?
  48. What are your RFI precautions?
  49. Pentodes without cathodes?
  50. help me
  51. Good quality 6600 CT OT
  52. Local Hamfest score!!!
  53. Unknown Transformer
  54. S5 11g help
  55. 6SN7 pre-amp
  56. These tube can be use for amplifier
  57. Any pitfalls to choke derived CT?
  58. Audio Research D76A bias adjustment
  59. I meet Mr. Morgan Jones
  60. st70 electrolytic caps
  61. Thank you SY
  62. el84 1 channel stopped working help
  63. Help! Weak Bass!
  64. never say never - 300B amps...
  65. 6aq5 Screen resistor?
  66. L. Tatro farm radios from 1930's.
  67. Published/DIY ultra-low THD designs?
  68. EL84 SE auto bias
  69. Kofi Annan in: "Oscillatin' in the Bevois Valley'"
  70. Subwoofer connections
  71. 6/30L2 - What to do with them ?
  72. PIONEER SA-810 Tube Amp Schematics
  73. EF86 Gm
  74. EL84/6BQ5 Ultra-Linear Push-Pull Recomendation
  75. Aria 6P14 makeover.
  76. switch for paralelled tube
  77. Curvecaptor with pentodes??
  78. Ground point for HF decoupling cap?
  79. Cancelling Harmonics
  80. Quiet Tube
  81. LM385 Adjustable voltage ref. diode as LED bias?
  82. Tubed Expression Pedal
  83. Any spice models around for AA5-esque battery tubes?
  84. Where to connect shielding
  85. Help 805 As that the friend makes to straighten even gallbladder machine
  86. studiogear of the beatles
  87. 6AK5 Triode Curves
  88. twisted pair signal, source selector and ground buss???
  89. Tiny Amplifiers
  90. A newly aquired Hum
  91. many jan tubes
  92. is this the correct way of adding a volume control?
  93. Basic DIY Valve Phono Stage
  94. 5879 Experience?
  95. personal jobs
  96. Wanted Triode strapped curves for pentode of ECL82.
  97. source selector / volume hum in Aikido
  98. DHTs and Cathode Bias
  99. Best SET driver stage with lots of B+?
  100. Tube Library Pspice error
  101. referencing DC heater to B+
  102. Double floating Circlotron
  103. Supply Capacitors ?
  104. Sakuma style Tango project
  105. MC10L is good or not
  106. Eico HF-20 & Claus Byrith PS voltage & power draw
  107. Voltage Regulator Tubes
  108. EL34 triode-connected grounding-grid curves?
  109. Pls help me understand AR SP6 circuit
  110. I'm looking for 417a/5842 Preamp Schematic without any Transformer, any suggestion ?
  111. Trouble in a new DIY amp.
  112. Suitable Transformers
  113. PT winding calculations HELP
  114. How to measure frequency response with a PC?
  115. Pspice Tube Generation Software
  116. Tektron tube amplifier Italy made
  117. What to do with 2x Stancor A3830?
  118. REQ: Schematics and tweaking tips
  119. Jadis Da 60 & 80
  120. 6L6 for a beginner, plus ECL86/6GW8
  121. Leak Stereo 20 clone? possibly with 6V6?
  122. Any comment on Vacuum State dpa300b??
  123. Radiotron Designers Handbook
  124. Kofi Annan in: "Buggin' the 'S' Outta Me!"
  125. 12B4 eqivalent : sonics-wise ?
  126. Any Eimac Scematics?
  127. What's a 6SL7 Good For?
  128. Where Can Buy 6c41
  129. would twisted pair from a network cable be suitable as hook-up wires inside an amp?
  130. use a 45 to drive a 45 ?
  131. Regulated heater reference
  132. Heater Elevation, how high?
  133. 6201 alternative
  134. 4V Tentlabs filament supply
  135. Difference between stereo & 2 monoblocks
  136. Parallel operation of triodes.
  137. input tubes using 6922?
  138. Looking for choices - affordable PP OPTs
  139. HH Scott Transformer #s
  140. Tips for rebuilding this amp?
  141. Need advice - what can I build with this power transformer?
  142. differences between K-12M and K-12G kits?
  143. 12B4 Line Stage with Fixed Bias?
  144. split push-pull output stage
  145. any thoughts/explanation on the power supply for this circuit?
  146. Where to begin on a PP?
  147. ProAc Tablette 50 Speakers
  148. Recognizing wiped out ECC's 81,82,83
  149. So tell me.... how did YOU get into tubes??
  150. 7189 or 7819 el84 tube?
  151. Question about Star Grounding
  152. Employment offered; breadboarding a Tube Monoblock
  153. Need help: Looking for ECF80 preamp schematic
  154. a 5AR4 after a diode bridge? what is the purpose?
  155. 807 & Pe 06/40n
  156. Board layout design
  157. 12AX7, 12AU7 Substitution
  158. 200,000 Tubes for sale in Michigan
  159. Ground scheme
  160. Help on 6L6GC Triode PP..working points..
  161. A neat trick?
  162. Setup & Implementation of G Pimm's Self-Bias CCS
  163. Tube Preamp FM interference
  164. Parafeed 6EM7 with 2k load?
  165. Need Help on HEATHKIT W-5M Power Transformer
  166. Fully isolated oilbath transformer.
  167. small signal DHT or DHP like AVVT20/8?
  168. EL 84 Pentode Config.
  169. Amp Tubes
  170. Can I replace the 1M volume pot with a 100K one in my HK A300?
  171. what's a hum band?
  172. Tube phono pre-amp needed.
  173. U/L or triode mode on music angel amp
  174. Why do some people dislike ultralinear?
  175. Adaptive class A
  176. 6X4 Tube rectifier.
  177. AN Conquest Clone modification
  178. Beautiful tubes.
  179. Selectable EL34/6L6 Amp OT
  180. Simple circlotron amp
  181. 12AX7 how many is enough?
  182. samples of 300B in pse or pp
  183. power supply choke with a connection for AC ground?
  184. musical fidelity x10d schematic
  185. Pot Value
  186. Minor crackling in new valves
  187. Aikido linestage Help Needed
  188. Scott 299A Schematic
  189. Q on PP & current mirrors
  190. Calculating PT headroom in PP class AB
  191. EL34 Failure
  192. Aikido Transformer recommendation
  193. No mains transformer B+ ?
  194. Help with horizontal mounting of 01-A and VR tubes
  195. twisted pair wiring on a tube amp
  196. Calculating SE Output Question
  197. Fixed-Bias Williamson EL34
  198. Bogen CHB-35 Preamp Mod
  199. resistors and sonic effects?
  200. tamura F-683 pole question
  201. EC52--Plate choke--300B/45/2a3/50/EL34 SE
  202. vtl deluxe 300 mb
  203. Is SD a Schottky Diode in this schematic?
  204. Maida regulator
  205. 572B vs 845 vs 211 SE
  206. Yet Another EL84 Amp
  207. Regulator for tube pre
  208. referencing heater supply ground to B+
  209. One Question for Hammond 1620 output transformer
  210. Bias adjustment on Dynaco ST70
  211. To SRPP or not?
  212. 811 vs 811A?
  213. Bogen integrated stereo amp
  214. Audionote Japan (Kondo) Ongaku... Can I Clone to DIY!
  215. Broken 6L6WXT tube
  216. transformer questions
  217. Microphone With A Low Impedance Tube
  218. 6EM7 Push-Pull
  219. polarity of Xicon electrolytics
  220. SE EL84 question
  221. ST-70 Power Transformer Info
  222. My new quad SED EL34 arrived
  223. isolation transformer for 50C5 amp
  224. DSP and vacuum tubes (from Analog Devices)
  225. Asymmetrical P-P OPT Primary
  226. Gated beam discriminator "amplifier"
  227. PCB Mount Loctal Socket?
  228. "Zero bias"/ driving the grid positive
  229. Low Profile Power Transformer Help
  230. Lowering Gain on an Aikido Preamp
  231. HELP; DIY PP amp - it's phase splitter, or buy Chineese.
  232. Tube vs. SS CCS...
  233. Another "I need an amp recommendation" thread
  234. i am a new one here
  235. i am new ! can you help me
  236. Pentode CCS: Would somebody check my work?
  237. PSU for 12V DC heaters
  238. 50C5 Triode strapped?
  239. homemade faceplates
  240. Can I build this?
  241. Heptode audio preamp? ECH83
  242. E130L in Triode mode
  243. class AB2 who's using it for hifi?
  244. Obscure radio tube
  245. another mingda
  246. tube hum in Aikido
  247. equivalent input impedance
  248. 6DG6GT "Magic Amp"
  249. Tektronix transformers
  250. *very* basic plate resistance Q

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