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  1. 6N16 Valve break-in time
  2. Mystery Amp.
  3. valves tungsten filament
  4. Musical Machine (triode PP EL34) question(s)
  5. M100 Output Tube Problem!
  6. Need to replace the power switch on an EAR 859
  7. Eico pentode vs triode VA
  8. gold grid 5881 - was I had?
  9. DN2540 CCS questions
  10. Operating point for pp KT88
  11. Low THD of Opt Cathode feedback
  12. No bias in S-5 12K, 8L, 16L, etc?
  13. Wanted...broken Golden Tube Audio SE-40
  14. Precise 116 Data Needed
  15. Can you bi-wire using two different taps
  16. Transient Responce of Williamson Amp build
  17. Tantalum caps in the filament supply?
  18. Assistance needed in reconstructing a Golden Tube Audio SE-40
  19. interesting power tube comparison chart
  20. 833A and 3-500Z Circuits
  21. Pilot SA-260 amp and Fischer 400C advice
  22. Long tailed pair phase inverter issues
  23. advice on changing bridge rectifier
  24. 21st Century Maida Regulator
  25. 6CA7 UL Push Pull Amp Design
  26. Tube recommendations anyone?
  27. WE 2C51 Date codes
  28. T500-1 - any ideas?
  29. hybrid power amp and more questions
  30. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  31. 6CB5 AMP BUILD.
  32. ABB France SE OPT??
  33. heater wiring
  34. Audioromy FU29 improvement and upgrades?
  35. Need VFD display filament driver
  36. Power Transformer Limitations
  37. Yaqin 100b channel imbalance
  38. Grid stoppers in class AB2 push-pull arrangenets?
  39. Glass bead inside of KT88
  40. Find tube tester!
  41. mono block amps with 2 x 833C overkill ? even possible to DIY?
  42. happiness is a box of 6550 NOS tubes
  43. Taming the 83
  44. 6550 tube bias characters
  45. Tube Amp Squeel
  46. Bias help Music Angel L$, EL84
  47. Stubborn Oscillation
  48. Moderm "high watt" resistors seem too small
  49. Thyratron based emergency switch?
  50. vT4C.com out of business....
  51. Maggie 8802 6V6
  52. Need Counterpoint SA-3 Board Photo
  53. Diodes in a Graetz Hybrid
  54. Tube Noob with a few questions
  55. KT88 Push Pull Idea... Questions
  56. Superior Instruments tv11 restore question?
  57. Superior Instruments tv11 restore question?
  58. Frequency Response of Output Tubes
  59. symptom of a dying (gain) tube
  60. Grounding in monoblock amps
  61. Seeking 6ME5 data and connection diagram
  62. 12BK5 UL tracing gone boosted triode?
  63. Difference between OPT
  64. Tweaking PP AMP Suggestions Please
  65. DC coupled Sand 'n Glass with Current Feedback
  66. Yaqin 100B fire and spares
  67. Pls help with a preamp
  68. Questions about Aikdo all in one octal
  69. Did I get used to my amp's sound?
  70. Michaelson and Austin TVA1 revB
  71. Joy of birth - a new preamp brought to the world
  72. 5U4G
  73. 6N6P best musicality? Help with modes.
  74. Identifying this capacitor in my Cayin TA-30 amp
  75. GU50 Push-Pull version1
  76. Common mode feedback
  77. Stuck with repair ;(
  78. active hum cancellation. PCB idea?
  79. Why this huge cap is so light?
  80. OPT performance
  81. Capacitor WVDC. is higher really better?
  82. Tung Sol ECC803S reissue - thumbs down
  83. Biasing Marshall 9200
  84. In a search for a 6CG7 line stage schematic
  85. Output stage for a Mono FM tube tuner
  86. Want to use El Cheapo P.I. for Scott LK72 rebuild
  87. Ansar caps
  88. TO220 isolation kits breakdown
  89. Schematic for Sony TC-200 tape unit
  90. HV power supply with serial chokes
  91. no logo on tube
  92. Tango XE-20-600S SE OPT for preamp ?
  93. RF Voltage Amplifier
  94. Anyone deal with psvane member here?
  95. Op Amp
  96. Imbalanced LTP using 6922/E88CC
  97. OPT choice for PP1C
  98. Drawing software for P2P layout?
  99. A hybrid amplifier with PCC88 and IRFP240/9240
  100. ARC D-75A Regulator tube
  101. cap upgrade worth it?
  102. valve/tube output transformer construction
  103. 300B (or other DHT) biasing options
  104. Cathode Bypass Capacitor concern
  105. Phase splitter into push pull front end - possible?
  106. Question on push-pull OT LEads
  107. Importance of Screen Voltage of Pentode???
  108. measuring dc offset in OTL headphone amp
  109. Seeking comments on Russian KBG-MN for PS
  110. Joe List Archive
  111. grundig tk45
  112. Grid bias - sound quality of battery or PSU?
  113. Help: Western Electric 418A tubes wire in triode ?
  114. Scott 355 Tuner-Preamp
  115. 6550 internal resistance hit parade
  116. Max anode voltage and srpp/aikido amps
  117. Effect of IERC coolers on SQ
  118. Tube standoff ?
  119. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  120. New Harman Kardon Citation II
  121. Conrad johnson Preamp Volume
  122. What's the benefit of dual NFB?
  123. Over-Spec'd PT as replacement.
  124. pp KT88, IT phase splitter
  125. ID this for me?
  126. 12AX7 in starving mode Dynaco PAS3X
  127. YAQIN MS-22B. Any thoughts, please?
  128. Heathkit A7E phono section
  129. Dyna-Quik 500
  130. Driving balanced outputs
  131. Primary current feedback - any good? Help!
  132. 3C30 tube...datasheet...help !!!
  133. LEDs on input valve cathodes
  134. Help with Conrad Johnson
  135. Output Transformer Power Rating Question
  136. Little piece of glass in tube.
  137. ASL Preamp Help
  138. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  139. Citation V OPT Diagnosis/Question...
  140. Cossor BT185 Beam tetrode
  141. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  142. Amp making phase shifter noise
  143. Help, Amp distortion after on/off/on???
  144. TDO 5w resistors?
  145. Audio Research Dual 75 - Low Bias
  146. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  147. 6N16 headphone amplifier
  148. 5k plate to plate, el34 triode strapped, 400v b+
  149. russian penthodes 6J2P-EB and 6J9P.
  150. mA meter drags the circuit down
  151. Valve stage coupling capacitor leakage?
  152. Carvin Transformer
  153. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  154. RCA 6V6PP amp schematic (Schade fb)
  155. 25W Class A Hybrid Amp
  156. help testing gz32 gz34
  157. A BeamKido?
  158. Zeners and voltage regulation
  159. A2 positive bias push pull possible?
  160. EL34 burn out on Yaqin MC10T
  161. input transformer and impedance question
  162. Options for 300mA tube rectifiers
  163. Electrical flow
  164. 5AR4 @ 250mA
  165. newbie with a choke question
  166. ROCKOAL JUKEBOX 1458
  167. Who can help to recognize this tube preamp?
  168. DIY High power Audio Amplifier from Heathkit SB200
  169. ECL82 amplifier help
  170. 6146B SPICE model wanted
  171. how to install a bias meter in a cathode bias amp
  172. Stuck... Output tube for Single ended?
  173. Aikido Octal Headphone amp
  174. silvertone organ amp conversion. 4704
  175. Impedance bridging
  176. Philips AG-9016 frequency range?
  177. fuse voltage rating?
  178. Grounding issue between turntable and tube amp
  179. Great sounding KT88 amp?
  180. Designing a Gomes i/v stage for tda1541a
  181. choke input power supply
  182. Need Help with New Amp Build, Ugly signals
  183. Amplifier Saftey
  184. Cary SLM100 question (older brand)
  185. 6n18p 6n1p 6n2p project needed
  186. Heater wiring idea?
  187. 300B Amp Testing
  188. New amp build
  189. Bamboo chassis 6P3P SE
  190. 6N23P-EB SRPP DAC output stage.
  191. Packard Plamor Schematic needed
  192. Hickok 600A
  193. Opinion; Alternate input tube socket
  194. Very Simple Attenuator For Audio Card
  195. Switchable PI, Paraphase,Cathodyne, LTP.
  196. Hmm... 4-1000As
  197. Bootstrapped anode
  198. Selecting the correct output transformer/primary impedance
  199. Caddock MK-132 or Mills MRA-12 as plate R?
  200. Minimum rating for stepdown transformer
  201. 6L6 Dared VP-20 issues
  202. Potentiometer Desigations/Codes
  203. 6L6 SE Tube Amp Kit on eBay... opinions?
  204. Building a VT46/PT25H PP amp
  205. Help choosing Sweat Peach FU50 or KT100
  206. New FM-3 Boards
  207. Unity-Coupled amp project
  208. Rectifier injecting noise into heater supply
  209. Tube base failures
  210. 1624 as DHT triode outputs
  211. Will this 2 stage DC DHT cct idea work?
  212. Help with Output Transformer
  213. multi cap verses add on power supply board
  214. 6AS7 hybride CCS
  215. Decware Zbox - looking for Tube buffer mods to reduce buzz
  216. Decware Zbox - looking for Tube buffer mods to reduce buzz
  217. Eico-ST-70 Advice
  218. Choosing Btw 2 EL34 China Tube Amps
  219. Looking for the GA article.
  220. Tube amp left ch. hum
  221. Did i model this PT correctly(psud2)?
  222. Help with the modifications of my tube-amp
  223. detailed photos of RH 84 build?
  224. heathkit aa-191
  225. Which KT-88 tube?
  226. 10m45s cascode diagram?
  227. What amp can make use of these large caps?
  228. Leslie 720 used with stereo keyboard
  229. Tube testers : sorting out settings for the Jackson 648
  230. Question about Shishido 2A3
  231. A micro-programmable tube tracer/tester
  232. amp with the FD422
  233. ST-35 C-1 Capacitor on PC-13 board.
  234. Transformer winding examples!!!!
  235. sansui sm-33
  236. How to mod ASL MG OTL 32 DT?
  237. 300b problem
  238. Audio Research M100s
  239. E83CC in PI or Preamp
  240. Current Dumping Amplifier
  241. Quicksilver 8417 Bias
  242. PtP wiring: Solidcore unshielded cable
  243. Removing a motor from a tube turntable.
  244. Why do I go to hamfests?
  245. Circlotron Amplifier Advice Needed
  246. Traces inside tube?
  247. Hybrid for Zobsky
  248. help identifying telefunken tubes
  249. 5U4GB Tube Power Supply Schematic
  250. Copland CTA-401 - early layout ?

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