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  1. advice on changing bridge rectifier
  2. 21st Century Maida Regulator
  3. 6CA7 UL Push Pull Amp Design
  4. Tube recommendations anyone?
  5. WE 2C51 Date codes
  6. T500-1 - any ideas?
  7. hybrid power amp and more questions
  8. Yaqin MC-100B - not as powerful as advertised, but still a good value.
  9. 6CB5 AMP BUILD.
  10. ABB France SE OPT??
  11. heater wiring
  12. Audioromy FU29 improvement and upgrades?
  13. Need VFD display filament driver
  14. Power Transformer Limitations
  15. Yaqin 100b channel imbalance
  16. Grid stoppers in class AB2 push-pull arrangenets?
  17. Glass bead inside of KT88
  18. Find tube tester!
  19. mono block amps with 2 x 833C overkill ? even possible to DIY?
  20. happiness is a box of 6550 NOS tubes
  21. Taming the 83
  22. 6550 tube bias characters
  23. Tube Amp Squeel
  24. Bias help Music Angel L$, EL84
  25. Stubborn Oscillation
  26. Moderm "high watt" resistors seem too small
  27. Thyratron based emergency switch?
  28. vT4C.com out of business....
  29. Maggie 8802 6V6
  30. Need Counterpoint SA-3 Board Photo
  31. Diodes in a Graetz Hybrid
  32. Tube Noob with a few questions
  33. KT88 Push Pull Idea... Questions
  34. Superior Instruments tv11 restore question?
  35. Superior Instruments tv11 restore question?
  36. Frequency Response of Output Tubes
  37. symptom of a dying (gain) tube
  38. Grounding in monoblock amps
  39. Seeking 6ME5 data and connection diagram
  40. 12BK5 UL tracing gone boosted triode?
  41. Difference between OPT
  42. Tweaking PP AMP Suggestions Please
  43. DC coupled Sand 'n Glass with Current Feedback
  44. Yaqin 100B fire and spares
  45. Pls help with a preamp
  46. Questions about Aikdo all in one octal
  47. Did I get used to my amp's sound?
  48. Michaelson and Austin TVA1 revB
  49. Joy of birth - a new preamp brought to the world
  50. 5U4G
  51. 6N6P best musicality? Help with modes.
  52. Identifying this capacitor in my Cayin TA-30 amp
  53. GU50 Push-Pull version1
  54. Common mode feedback
  55. Stuck with repair ;(
  56. active hum cancellation. PCB idea?
  57. Why this huge cap is so light?
  58. OPT performance
  59. Capacitor WVDC. is higher really better?
  60. Tung Sol ECC803S reissue - thumbs down
  61. Biasing Marshall 9200
  62. In a search for a 6CG7 line stage schematic
  63. Output stage for a Mono FM tube tuner
  64. Want to use El Cheapo P.I. for Scott LK72 rebuild
  65. Ansar caps
  66. TO220 isolation kits breakdown
  67. Schematic for Sony TC-200 tape unit
  68. HV power supply with serial chokes
  69. no logo on tube
  70. Tango XE-20-600S SE OPT for preamp ?
  71. RF Voltage Amplifier
  72. Anyone deal with psvane member here?
  73. Op Amp
  74. Imbalanced LTP using 6922/E88CC
  75. OPT choice for PP1C
  76. Drawing software for P2P layout?
  77. A hybrid amplifier with PCC88 and IRFP240/9240
  78. ARC D-75A Regulator tube
  79. cap upgrade worth it?
  80. valve/tube output transformer construction
  81. 300B (or other DHT) biasing options
  82. Cathode Bypass Capacitor concern
  83. Phase splitter into push pull front end - possible?
  84. Question on push-pull OT LEads
  85. Importance of Screen Voltage of Pentode???
  86. measuring dc offset in OTL headphone amp
  87. Seeking comments on Russian KBG-MN for PS
  88. Joe List Archive
  89. grundig tk45
  90. Grid bias - sound quality of battery or PSU?
  91. Help: Western Electric 418A tubes wire in triode ?
  92. Scott 355 Tuner-Preamp
  93. 6550 internal resistance hit parade
  94. Max anode voltage and srpp/aikido amps
  95. Effect of IERC coolers on SQ
  96. Tube standoff ?
  97. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  98. New Harman Kardon Citation II
  99. Conrad johnson Preamp Volume
  100. What's the benefit of dual NFB?
  101. Over-Spec'd PT as replacement.
  102. pp KT88, IT phase splitter
  103. ID this for me?
  104. 12AX7 in starving mode Dynaco PAS3X
  105. YAQIN MS-22B. Any thoughts, please?
  106. Heathkit A7E phono section
  107. Dyna-Quik 500
  108. Driving balanced outputs
  109. Primary current feedback - any good? Help!
  110. 3C30 tube...datasheet...help !!!
  111. LEDs on input valve cathodes
  112. Help with Conrad Johnson
  113. Output Transformer Power Rating Question
  114. Little piece of glass in tube.
  115. ASL Preamp Help
  116. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  117. Citation V OPT Diagnosis/Question...
  118. Cossor BT185 Beam tetrode
  119. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  120. Amp making phase shifter noise
  121. Help, Amp distortion after on/off/on???
  122. TDO 5w resistors?
  123. Audio Research Dual 75 - Low Bias
  124. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  125. 6N16 headphone amplifier
  126. 5k plate to plate, el34 triode strapped, 400v b+
  127. russian penthodes 6J2P-EB and 6J9P.
  128. mA meter drags the circuit down
  129. Valve stage coupling capacitor leakage?
  130. Carvin Transformer
  131. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  132. RCA 6V6PP amp schematic (Schade fb)
  133. 25W Class A Hybrid Amp
  134. help testing gz32 gz34
  135. A BeamKido?
  136. Zeners and voltage regulation
  137. A2 positive bias push pull possible?
  138. EL34 burn out on Yaqin MC10T
  139. input transformer and impedance question
  140. Options for 300mA tube rectifiers
  141. Electrical flow
  142. 5AR4 @ 250mA
  143. newbie with a choke question
  144. ROCKOAL JUKEBOX 1458
  145. Who can help to recognize this tube preamp?
  146. DIY High power Audio Amplifier from Heathkit SB200
  147. ECL82 amplifier help
  148. 6146B SPICE model wanted
  149. how to install a bias meter in a cathode bias amp
  150. Stuck... Output tube for Single ended?
  151. Aikido Octal Headphone amp
  152. silvertone organ amp conversion. 4704
  153. Impedance bridging
  154. Philips AG-9016 frequency range?
  155. fuse voltage rating?
  156. Grounding issue between turntable and tube amp
  157. Great sounding KT88 amp?
  158. Designing a Gomes i/v stage for tda1541a
  159. choke input power supply
  160. Need Help with New Amp Build, Ugly signals
  161. Amplifier Saftey
  162. Cary SLM100 question (older brand)
  163. 6n18p 6n1p 6n2p project needed
  164. Heater wiring idea?
  165. 300B Amp Testing
  166. New amp build
  167. Bamboo chassis 6P3P SE
  168. 6N23P-EB SRPP DAC output stage.
  169. Packard Plamor Schematic needed
  170. Hickok 600A
  171. Opinion; Alternate input tube socket
  172. Very Simple Attenuator For Audio Card
  173. Switchable PI, Paraphase,Cathodyne, LTP.
  174. Hmm... 4-1000As
  175. Bootstrapped anode
  176. Selecting the correct output transformer/primary impedance
  177. Caddock MK-132 or Mills MRA-12 as plate R?
  178. Minimum rating for stepdown transformer
  179. 6L6 Dared VP-20 issues
  180. Potentiometer Desigations/Codes
  181. 6L6 SE Tube Amp Kit on eBay... opinions?
  182. Building a VT46/PT25H PP amp
  183. Help choosing Sweat Peach FU50 or KT100
  184. New FM-3 Boards
  185. Unity-Coupled amp project
  186. Rectifier injecting noise into heater supply
  187. Tube base failures
  188. 1624 as DHT triode outputs
  189. Will this 2 stage DC DHT cct idea work?
  190. Help with Output Transformer
  191. multi cap verses add on power supply board
  192. 6AS7 hybride CCS
  193. Decware Zbox - looking for Tube buffer mods to reduce buzz
  194. Decware Zbox - looking for Tube buffer mods to reduce buzz
  195. Eico-ST-70 Advice
  196. Choosing Btw 2 EL34 China Tube Amps
  197. Looking for the GA article.
  198. Tube amp left ch. hum
  199. Did i model this PT correctly(psud2)?
  200. Help with the modifications of my tube-amp
  201. detailed photos of RH 84 build?
  202. heathkit aa-191
  203. Which KT-88 tube?
  204. 10m45s cascode diagram?
  205. What amp can make use of these large caps?
  206. Leslie 720 used with stereo keyboard
  207. Tube testers : sorting out settings for the Jackson 648
  208. Question about Shishido 2A3
  209. A micro-programmable tube tracer/tester
  210. amp with the FD422
  211. ST-35 C-1 Capacitor on PC-13 board.
  212. Transformer winding examples!!!!
  213. sansui sm-33
  214. How to mod ASL MG OTL 32 DT?
  215. 300b problem
  216. Audio Research M100s
  217. E83CC in PI or Preamp
  218. Current Dumping Amplifier
  219. Quicksilver 8417 Bias
  220. PtP wiring: Solidcore unshielded cable
  221. Removing a motor from a tube turntable.
  222. Why do I go to hamfests?
  223. Circlotron Amplifier Advice Needed
  224. Traces inside tube?
  225. Hybrid for Zobsky
  226. help identifying telefunken tubes
  227. 5U4GB Tube Power Supply Schematic
  228. Copland CTA-401 - early layout ?
  229. AVO CT160: Testing dual triodes
  230. Need to run heaters in output tubes, remove plate and screen safe?
  231. 1AG4 Direct Heated Pentode, Output
  232. grid stopper and grid choke on pentode input
  233. Has anyone tryied the GuiGuang 300B?
  234. Honeywell Mercury Tube?
  235. Tube audio-phoolery -- more teats on bulls
  236. Strange tube
  237. Adding a Headphone output to my amp.
  238. 6CG7 Phono/ linestage
  239. RH84 Build from old Dumont console
  240. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  241. Long Tail Pair
  242. Hickok 752A 5AR4 rectifier test?
  243. Shunt Capacitance in Output Transformer
  244. LTP vs single first stage
  245. 6n23 v. 6dj8 v. 6fq7
  246. newer than noob looking for advice on RH84
  247. 300B failed again
  248. No output transformer tube amp
  249. curious about a curious connection
  250. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm

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