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  1. Little Dot MKIII ??????
  2. Cathode follower wideband amplifier
  3. Wrong base ???
  4. My first DIY schematic... need eagle eyes.!
  5. Stubborn Noise/Oscillation - Another Call for Help
  6. help with power tranny
  7. Tube Amp Repair - SE Michigan
  8. ST 70 Power on!
  9. given choice of low screen voltage or low bias which sounds better or is it equal
  10. How many various OEM brands come from Shuguang?
  11. Bye for now! :)
  12. general power tube output impedance chart?
  13. Should I ground my ST 70?
  14. What is the biggest 300B tube? (Dimension)
  15. 6N16 Valve break-in time
  16. Mystery Amp.
  17. valves tungsten filament
  18. Musical Machine (triode PP EL34) question(s)
  19. M100 Output Tube Problem!
  20. Need to replace the power switch on an EAR 859
  21. Eico pentode vs triode VA
  22. gold grid 5881 - was I had?
  23. DN2540 CCS questions
  24. Operating point for pp KT88
  25. Low THD of Opt Cathode feedback
  26. No bias in S-5 12K, 8L, 16L, etc?
  27. Wanted...broken Golden Tube Audio SE-40
  28. Precise 116 Data Needed
  29. Can you bi-wire using two different taps
  30. Transient Responce of Williamson Amp build
  31. Tantalum caps in the filament supply?
  32. Assistance needed in reconstructing a Golden Tube Audio SE-40
  33. interesting power tube comparison chart
  34. 833A and 3-500Z Circuits
  35. Pilot SA-260 amp and Fischer 400C advice
  36. Long tailed pair phase inverter issues
  37. advice on changing bridge rectifier
  38. 21st Century Maida Regulator
  39. 6CA7 UL Push Pull Amp Design
  40. Tube recommendations anyone?
  41. WE 2C51 Date codes
  42. T500-1 - any ideas?
  43. hybrid power amp and more questions
  44. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  45. 6CB5 AMP BUILD.
  46. ABB France SE OPT??
  47. heater wiring
  48. Audioromy FU29 improvement and upgrades?
  49. Need VFD display filament driver
  50. Power Transformer Limitations
  51. Yaqin 100b channel imbalance
  52. Grid stoppers in class AB2 push-pull arrangenets?
  53. Glass bead inside of KT88
  54. Find tube tester!
  55. mono block amps with 2 x 833C overkill ? even possible to DIY?
  56. happiness is a box of 6550 NOS tubes
  57. Taming the 83
  58. 6550 tube bias characters
  59. Tube Amp Squeel
  60. Bias help Music Angel L$, EL84
  61. Stubborn Oscillation
  62. Moderm "high watt" resistors seem too small
  63. Thyratron based emergency switch?
  64. vT4C.com out of business....
  65. Maggie 8802 6V6
  66. Need Counterpoint SA-3 Board Photo
  67. Diodes in a Graetz Hybrid
  68. Tube Noob with a few questions
  69. KT88 Push Pull Idea... Questions
  70. Superior Instruments tv11 restore question?
  71. Superior Instruments tv11 restore question?
  72. Frequency Response of Output Tubes
  73. symptom of a dying (gain) tube
  74. Grounding in monoblock amps
  75. Seeking 6ME5 data and connection diagram
  76. 12BK5 UL tracing gone boosted triode?
  77. Difference between OPT
  78. Tweaking PP AMP Suggestions Please
  79. DC coupled Sand 'n Glass with Current Feedback
  80. Yaqin 100B fire and spares
  81. Pls help with a preamp
  82. Questions about Aikdo all in one octal
  83. Did I get used to my amp's sound?
  84. Michaelson and Austin TVA1 revB
  85. Joy of birth - a new preamp brought to the world
  86. 5U4G
  87. 6N6P best musicality? Help with modes.
  88. Identifying this capacitor in my Cayin TA-30 amp
  89. GU50 Push-Pull version1
  90. Common mode feedback
  91. Stuck with repair ;(
  92. active hum cancellation. PCB idea?
  93. Why this huge cap is so light?
  94. OPT performance
  95. Capacitor WVDC. is higher really better?
  96. Tung Sol ECC803S reissue - thumbs down
  97. Biasing Marshall 9200
  98. In a search for a 6CG7 line stage schematic
  99. Output stage for a Mono FM tube tuner
  100. Want to use El Cheapo P.I. for Scott LK72 rebuild
  101. Ansar caps
  102. TO220 isolation kits breakdown
  103. Schematic for Sony TC-200 tape unit
  104. HV power supply with serial chokes
  105. no logo on tube
  106. Tango XE-20-600S SE OPT for preamp ?
  107. RF Voltage Amplifier
  108. Anyone deal with psvane member here?
  109. Op Amp
  110. Imbalanced LTP using 6922/E88CC
  111. OPT choice for PP1C
  112. Drawing software for P2P layout?
  113. A hybrid amplifier with PCC88 and IRFP240/9240
  114. ARC D-75A Regulator tube
  115. cap upgrade worth it?
  116. valve/tube output transformer construction
  117. 300B (or other DHT) biasing options
  118. Cathode Bypass Capacitor concern
  119. Phase splitter into push pull front end - possible?
  120. Question on push-pull OT LEads
  121. Importance of Screen Voltage of Pentode???
  122. measuring dc offset in OTL headphone amp
  123. Seeking comments on Russian KBG-MN for PS
  124. Joe List Archive
  125. grundig tk45
  126. Grid bias - sound quality of battery or PSU?
  127. Help: Western Electric 418A tubes wire in triode ?
  128. Scott 355 Tuner-Preamp
  129. 6550 internal resistance hit parade
  130. Max anode voltage and srpp/aikido amps
  131. Effect of IERC coolers on SQ
  132. Tube standoff ?
  133. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  134. New Harman Kardon Citation II
  135. Conrad johnson Preamp Volume
  136. What's the benefit of dual NFB?
  137. Over-Spec'd PT as replacement.
  138. pp KT88, IT phase splitter
  139. ID this for me?
  140. 12AX7 in starving mode Dynaco PAS3X
  141. YAQIN MS-22B. Any thoughts, please?
  142. Heathkit A7E phono section
  143. Dyna-Quik 500
  144. Driving balanced outputs
  145. Primary current feedback - any good? Help!
  146. 3C30 tube...datasheet...help !!!
  147. LEDs on input valve cathodes
  148. Help with Conrad Johnson
  149. Output Transformer Power Rating Question
  150. Little piece of glass in tube.
  151. ASL Preamp Help
  152. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  153. Citation V OPT Diagnosis/Question...
  154. Cossor BT185 Beam tetrode
  155. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  156. Amp making phase shifter noise
  157. Help, Amp distortion after on/off/on???
  158. TDO 5w resistors?
  159. Audio Research Dual 75 - Low Bias
  160. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  161. 6N16 headphone amplifier
  162. 5k plate to plate, el34 triode strapped, 400v b+
  163. russian penthodes 6J2P-EB and 6J9P.
  164. mA meter drags the circuit down
  165. Valve stage coupling capacitor leakage?
  166. Carvin Transformer
  167. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  168. RCA 6V6PP amp schematic (Schade fb)
  169. 25W Class A Hybrid Amp
  170. help testing gz32 gz34
  171. A BeamKido?
  172. Zeners and voltage regulation
  173. A2 positive bias push pull possible?
  174. EL34 burn out on Yaqin MC10T
  175. input transformer and impedance question
  176. Options for 300mA tube rectifiers
  177. Electrical flow
  178. 5AR4 @ 250mA
  179. newbie with a choke question
  180. ROCKOAL JUKEBOX 1458
  181. Who can help to recognize this tube preamp?
  182. DIY High power Audio Amplifier from Heathkit SB200
  183. ECL82 amplifier help
  184. 6146B SPICE model wanted
  185. how to install a bias meter in a cathode bias amp
  186. Stuck... Output tube for Single ended?
  187. Aikido Octal Headphone amp
  188. silvertone organ amp conversion. 4704
  189. Impedance bridging
  190. Philips AG-9016 frequency range?
  191. fuse voltage rating?
  192. Grounding issue between turntable and tube amp
  193. Great sounding KT88 amp?
  194. Designing a Gomes i/v stage for tda1541a
  195. choke input power supply
  196. Need Help with New Amp Build, Ugly signals
  197. Amplifier Saftey
  198. Cary SLM100 question (older brand)
  199. 6n18p 6n1p 6n2p project needed
  200. Heater wiring idea?
  201. 300B Amp Testing
  202. New amp build
  203. Bamboo chassis 6P3P SE
  204. 6N23P-EB SRPP DAC output stage.
  205. Packard Plamor Schematic needed
  206. Hickok 600A
  207. Opinion; Alternate input tube socket
  208. Very Simple Attenuator For Audio Card
  209. Switchable PI, Paraphase,Cathodyne, LTP.
  210. Hmm... 4-1000As
  211. Bootstrapped anode
  212. Selecting the correct output transformer/primary impedance
  213. Caddock MK-132 or Mills MRA-12 as plate R?
  214. Minimum rating for stepdown transformer
  215. 6L6 Dared VP-20 issues
  216. Potentiometer Desigations/Codes
  217. 6L6 SE Tube Amp Kit on eBay... opinions?
  218. Building a VT46/PT25H PP amp
  219. Help choosing Sweat Peach FU50 or KT100
  220. New FM-3 Boards
  221. Unity-Coupled amp project
  222. Rectifier injecting noise into heater supply
  223. Tube base failures
  224. 1624 as DHT triode outputs
  225. Will this 2 stage DC DHT cct idea work?
  226. Help with Output Transformer
  227. multi cap verses add on power supply board
  228. 6AS7 hybride CCS
  229. Decware Zbox - looking for Tube buffer mods to reduce buzz
  230. Decware Zbox - looking for Tube buffer mods to reduce buzz
  231. Eico-ST-70 Advice
  232. Choosing Btw 2 EL34 China Tube Amps
  233. Looking for the GA article.
  234. Tube amp left ch. hum
  235. Did i model this PT correctly(psud2)?
  236. Help with the modifications of my tube-amp
  237. detailed photos of RH 84 build?
  238. heathkit aa-191
  239. Which KT-88 tube?
  240. 10m45s cascode diagram?
  241. What amp can make use of these large caps?
  242. Leslie 720 used with stereo keyboard
  243. Tube testers : sorting out settings for the Jackson 648
  244. Question about Shishido 2A3
  245. A micro-programmable tube tracer/tester
  246. amp with the FD422
  247. ST-35 C-1 Capacitor on PC-13 board.
  248. Transformer winding examples!!!!
  249. sansui sm-33
  250. How to mod ASL MG OTL 32 DT?

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