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  1. I need help with ccs based LTP
  2. 4033L- rare triode tube.
  3. Single tube linestage schematic wanted: 8CG7
  4. Tetra Sans PS
  5. Tone controls
  6. Vintage Heathkit Electronic Switch as soundcard interface
  7. K-12M extra caps??
  8. Looking for Tube Amp Kit Recommendations
  9. magnatone 280 schematic
  10. high voltage after cap. change
  11. My first tube amp
  12. Recommendations for 6888 triode operating point?
  13. Mullard 12AX7 part uniformity
  14. 6n15n-EB confusion
  15. Noob Question: Phono Preamp
  16. Transformer data required P782
  17. Snubbers on Power Transformer Secondaries
  18. CCS for 6V6 PP amp
  19. screen voltage for triode strapped pentode
  20. New Driver
  21. purpose and value importance of resistor
  22. Values for Vintage Amp's & Preamp's Paragon 12(70's) & More
  23. Help with amp please.
  24. Another Discrete Current Source
  25. 834 Triode amp
  26. Determing the reason for mystery? cap in schematic.
  27. Dyna ST70 to Dual-differential EL34 triode amp project
  28. Tube Signal to Noise Ratio / Dynamic Range
  29. fluctating bias
  30. Just tried a Wire Wound pot for volume.
  31. LED's in the cathode..
  32. Dr. Arthur Loesch
  33. Counterpoint SA-220 mods
  34. Broskie P-P Bridged Output Stage
  35. Would a member fluent in technical German please have a look at this link?
  36. Damaged tube? EL84
  37. Heathkit AA-161 EL84/6BQ5 PP mono integrated amp mod
  38. vk-2100 mod question please
  39. Heater supply
  40. 6111/6n16b - linestage noise problem
  41. OPT specs
  42. Re: Tube Line gain stage with pcc88 or ecc82
  43. Knight-kit KA-55
  44. Can I delay part of a B supply this way?
  45. Tube Preamp turn on circuit
  46. SE GM-70 for 700-800 euro?
  47. filter cap markings
  48. tube buffer noise cancellation
  49. PSUD 2
  50. Bypassing filter caps with Smaller caps
  51. balancing resister for series capacitor in a power supply
  52. Yaqin MC-100b- TJ Full Music 6sn7
  53. Forgive me for I have sinned. Help with Volume Pot!
  54. Help with diagnoses for leak 20 PLEASE
  55. Suggested Circuit Changes to use EM80 in place of 6E2 Eye
  56. Fred Nachbaur SET amp: input capacitor
  57. Heathkit scu 1 and knight kn924 needed schematics
  58. Journey to the centre of a tube..
  59. RIP Dr Jim Marshall
  60. some questions about an ECL82 SE amp
  61. Heathkit Sine/Square wave Generator Manual needed!
  62. SRPP Signal Output Capacitors
  63. simple se input impedance
  64. Kt120 screen current
  65. New or used output xformers to play around with?
  66. Magnavox amp
  67. Help hooking up panel ammeter for bias adjust
  68. opt A-440
  69. OTL Headphone amplifier with Tube ED8000
  70. NJ7P Gone?
  71. MYSTERY METAL TUBES B-1532
  72. noisy tubes
  73. Old amp hum repair
  74. Traveling with DIY Kit in USA-Airport Security Question
  75. Hammond 1650P vs 1650N For EL34 PP
  76. Calibrate a Hickok 6000?
  77. Blown Output Tubes
  78. Kriesler Radiogram refurbishment questions
  79. 6P15P socket connection
  80. Revision 2. Balanced
  81. 6V6 schematic
  82. 6h23N test setting?
  83. 12AH7GT
  84. TUBE Tape Head record / playback amp....
  85. Strange couple comportament 6L6GC RCA black plates.
  86. Reduce Output Volume
  87. Differential Amp CCS Tail SVCS Plate - Noise Issues
  88. Triode curves for EL/PL519
  89. Is that a SRPP circuit with 6SN7?
  90. KT33 Push Pull
  91. Rogers Cadet III Integrated Amp Capacitor Values help
  92. 2a3 alternative after NOS burning
  93. 6SN7 SRPP - oscillating dc offset
  94. Hickok TV-2 'percent quality'
  95. Another Tube I/V converter/preamp for balanced DACs with SE output:build thread
  96. Aikido LV 48V ECC99 or 6N6p
  97. Project: Ultra Small 6C33 / Hybrid Stereo Headphone Amplifier
  98. Back to the tubes
  99. Any use for these PAECO transformer?
  100. Video lectures on tube amplifier design
  101. Millett PP or Allen Wright's PP-2c or?
  102. Magnavox 8608-10
  103. Time relay
  104. Help with Music Angel XD800MKIII mods!?
  105. Little Dot MKIII ??????
  106. Cathode follower wideband amplifier
  107. Wrong base ???
  108. My first DIY schematic... need eagle eyes.!
  109. Stubborn Noise/Oscillation - Another Call for Help
  110. help with power tranny
  111. Tube Amp Repair - SE Michigan
  112. ST 70 Power on!
  113. given choice of low screen voltage or low bias which sounds better or is it equal
  114. How many various OEM brands come from Shuguang?
  115. Bye for now! :)
  116. general power tube output impedance chart?
  117. Should I ground my ST 70?
  118. What is the biggest 300B tube? (Dimension)
  119. 6N16 Valve break-in time
  120. Mystery Amp.
  121. valves tungsten filament
  122. Musical Machine (triode PP EL34) question(s)
  123. M100 Output Tube Problem!
  124. Need to replace the power switch on an EAR 859
  125. Eico pentode vs triode VA
  126. gold grid 5881 - was I had?
  127. DN2540 CCS questions
  128. Operating point for pp KT88
  129. Low THD of Opt Cathode feedback
  130. No bias in S-5 12K, 8L, 16L, etc?
  131. Wanted...broken Golden Tube Audio SE-40
  132. Precise 116 Data Needed
  133. Can you bi-wire using two different taps
  134. Transient Responce of Williamson Amp build
  135. Tantalum caps in the filament supply?
  136. Assistance needed in reconstructing a Golden Tube Audio SE-40
  137. interesting power tube comparison chart
  138. 833A and 3-500Z Circuits
  139. Pilot SA-260 amp and Fischer 400C advice
  140. Long tailed pair phase inverter issues
  141. advice on changing bridge rectifier
  142. 21st Century Maida Regulator
  143. 6CA7 UL Push Pull Amp Design
  144. Tube recommendations anyone?
  145. WE 2C51 Date codes
  146. T500-1 - any ideas?
  147. hybrid power amp and more questions
  148. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  149. 6CB5 AMP BUILD.
  150. ABB France SE OPT??
  151. heater wiring
  152. Audioromy FU29 improvement and upgrades?
  153. Need VFD display filament driver
  154. Power Transformer Limitations
  155. Yaqin 100b channel imbalance
  156. Grid stoppers in class AB2 push-pull arrangenets?
  157. Glass bead inside of KT88
  158. Find tube tester!
  159. mono block amps with 2 x 833C overkill ? even possible to DIY?
  160. happiness is a box of 6550 NOS tubes
  161. Taming the 83
  162. 6550 tube bias characters
  163. Tube Amp Squeel
  164. Bias help Music Angel L$, EL84
  165. Stubborn Oscillation
  166. Moderm "high watt" resistors seem too small
  167. Thyratron based emergency switch?
  168. vT4C.com out of business....
  169. Maggie 8802 6V6
  170. Need Counterpoint SA-3 Board Photo
  171. Diodes in a Graetz Hybrid
  172. Tube Noob with a few questions
  173. KT88 Push Pull Idea... Questions
  174. Superior Instruments tv11 restore question?
  175. Superior Instruments tv11 restore question?
  176. Frequency Response of Output Tubes
  177. symptom of a dying (gain) tube
  178. Grounding in monoblock amps
  179. Seeking 6ME5 data and connection diagram
  180. 12BK5 UL tracing gone boosted triode?
  181. Difference between OPT
  182. Tweaking PP AMP Suggestions Please
  183. DC coupled Sand 'n Glass with Current Feedback
  184. Yaqin 100B fire and spares
  185. Pls help with a preamp
  186. Questions about Aikdo all in one octal
  187. Did I get used to my amp's sound?
  188. Michaelson and Austin TVA1 revB
  189. Joy of birth - a new preamp brought to the world
  190. 5U4G
  191. 6N6P best musicality? Help with modes.
  192. Identifying this capacitor in my Cayin TA-30 amp
  193. GU50 Push-Pull version1
  194. Common mode feedback
  195. Stuck with repair ;(
  196. active hum cancellation. PCB idea?
  197. Why this huge cap is so light?
  198. OPT performance
  199. Capacitor WVDC. is higher really better?
  200. Tung Sol ECC803S reissue - thumbs down
  201. Biasing Marshall 9200
  202. In a search for a 6CG7 line stage schematic
  203. Output stage for a Mono FM tube tuner
  204. Want to use El Cheapo P.I. for Scott LK72 rebuild
  205. Ansar caps
  206. TO220 isolation kits breakdown
  207. Schematic for Sony TC-200 tape unit
  208. HV power supply with serial chokes
  209. no logo on tube
  210. Tango XE-20-600S SE OPT for preamp ?
  211. RF Voltage Amplifier
  212. Anyone deal with psvane member here?
  213. Op Amp
  214. Imbalanced LTP using 6922/E88CC
  215. OPT choice for PP1C
  216. Drawing software for P2P layout?
  217. A hybrid amplifier with PCC88 and IRFP240/9240
  218. ARC D-75A Regulator tube
  219. cap upgrade worth it?
  220. valve/tube output transformer construction
  221. 300B (or other DHT) biasing options
  222. Cathode Bypass Capacitor concern
  223. Phase splitter into push pull front end - possible?
  224. Question on push-pull OT LEads
  225. Importance of Screen Voltage of Pentode???
  226. measuring dc offset in OTL headphone amp
  227. Seeking comments on Russian KBG-MN for PS
  228. Joe List Archive
  229. grundig tk45
  230. Grid bias - sound quality of battery or PSU?
  231. Help: Western Electric 418A tubes wire in triode ?
  232. Scott 355 Tuner-Preamp
  233. 6550 internal resistance hit parade
  234. Max anode voltage and srpp/aikido amps
  235. Effect of IERC coolers on SQ
  236. Tube standoff ?
  237. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  238. New Harman Kardon Citation II
  239. Conrad johnson Preamp Volume
  240. What's the benefit of dual NFB?
  241. Over-Spec'd PT as replacement.
  242. pp KT88, IT phase splitter
  243. ID this for me?
  244. 12AX7 in starving mode Dynaco PAS3X
  245. YAQIN MS-22B. Any thoughts, please?
  246. Heathkit A7E phono section
  247. Dyna-Quik 500
  248. Driving balanced outputs
  249. Primary current feedback - any good? Help!
  250. 3C30 tube...datasheet...help !!!

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