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  1. active hum cancellation. PCB idea?
  2. Why this huge cap is so light?
  3. OPT performance
  4. Capacitor WVDC. is higher really better?
  5. Tung Sol ECC803S reissue - thumbs down
  6. Biasing Marshall 9200
  7. In a search for a 6CG7 line stage schematic
  8. Output stage for a Mono FM tube tuner
  9. Want to use El Cheapo P.I. for Scott LK72 rebuild
  10. Ansar caps
  11. TO220 isolation kits breakdown
  12. Schematic for Sony TC-200 tape unit
  13. HV power supply with serial chokes
  14. no logo on tube
  15. Tango XE-20-600S SE OPT for preamp ?
  16. RF Voltage Amplifier
  17. Anyone deal with psvane member here?
  18. Op Amp
  19. Imbalanced LTP using 6922/E88CC
  20. OPT choice for PP1C
  21. Drawing software for P2P layout?
  22. A hybrid amplifier with PCC88 and IRFP240/9240
  23. ARC D-75A Regulator tube
  24. cap upgrade worth it?
  25. valve/tube output transformer construction
  26. 300B (or other DHT) biasing options
  27. Cathode Bypass Capacitor concern
  28. Phase splitter into push pull front end - possible?
  29. Question on push-pull OT LEads
  30. Importance of Screen Voltage of Pentode???
  31. measuring dc offset in OTL headphone amp
  32. Seeking comments on Russian KBG-MN for PS
  33. Joe List Archive
  34. grundig tk45
  35. Grid bias - sound quality of battery or PSU?
  36. Help: Western Electric 418A tubes wire in triode ?
  37. Scott 355 Tuner-Preamp
  38. 6550 internal resistance hit parade
  39. Max anode voltage and srpp/aikido amps
  40. Effect of IERC coolers on SQ
  41. Tube standoff ?
  42. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  43. New Harman Kardon Citation II
  44. Conrad johnson Preamp Volume
  45. What's the benefit of dual NFB?
  46. Over-Spec'd PT as replacement.
  47. pp KT88, IT phase splitter
  48. ID this for me?
  49. 12AX7 in starving mode Dynaco PAS3X
  50. YAQIN MS-22B. Any thoughts, please?
  51. Heathkit A7E phono section
  52. Dyna-Quik 500
  53. Driving balanced outputs
  54. Primary current feedback - any good? Help!
  55. 3C30 tube...datasheet...help !!!
  56. LEDs on input valve cathodes
  57. Help with Conrad Johnson
  58. Output Transformer Power Rating Question
  59. Little piece of glass in tube.
  60. ASL Preamp Help
  61. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  62. Citation V OPT Diagnosis/Question...
  63. Cossor BT185 Beam tetrode
  64. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  65. Amp making phase shifter noise
  66. Help, Amp distortion after on/off/on???
  67. TDO 5w resistors?
  68. Audio Research Dual 75 - Low Bias
  69. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  70. 6N16 headphone amplifier
  71. 5k plate to plate, el34 triode strapped, 400v b+
  72. russian penthodes 6J2P-EB and 6J9P.
  73. mA meter drags the circuit down
  74. Valve stage coupling capacitor leakage?
  75. Carvin Transformer
  76. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  77. RCA 6V6PP amp schematic (Schade fb)
  78. 25W Class A Hybrid Amp
  79. help testing gz32 gz34
  80. A BeamKido?
  81. Zeners and voltage regulation
  82. A2 positive bias push pull possible?
  83. EL34 burn out on Yaqin MC10T
  84. input transformer and impedance question
  85. Options for 300mA tube rectifiers
  86. Electrical flow
  87. 5AR4 @ 250mA
  88. newbie with a choke question
  89. ROCKOAL JUKEBOX 1458
  90. Who can help to recognize this tube preamp?
  91. DIY High power Audio Amplifier from Heathkit SB200
  92. ECL82 amplifier help
  93. 6146B SPICE model wanted
  94. how to install a bias meter in a cathode bias amp
  95. Stuck... Output tube for Single ended?
  96. Aikido Octal Headphone amp
  97. silvertone organ amp conversion. 4704
  98. Impedance bridging
  99. Philips AG-9016 frequency range?
  100. fuse voltage rating?
  101. Grounding issue between turntable and tube amp
  102. Great sounding KT88 amp?
  103. Designing a Gomes i/v stage for tda1541a
  104. choke input power supply
  105. Need Help with New Amp Build, Ugly signals
  106. Amplifier Saftey
  107. Cary SLM100 question (older brand)
  108. 6n18p 6n1p 6n2p project needed
  109. Heater wiring idea?
  110. 300B Amp Testing
  111. New amp build
  112. Bamboo chassis 6P3P SE
  113. 6N23P-EB SRPP DAC output stage.
  114. Packard Plamor Schematic needed
  115. Hickok 600A
  116. Opinion; Alternate input tube socket
  117. Very Simple Attenuator For Audio Card
  118. Switchable PI, Paraphase,Cathodyne, LTP.
  119. Hmm... 4-1000As
  120. Bootstrapped anode
  121. Selecting the correct output transformer/primary impedance
  122. Caddock MK-132 or Mills MRA-12 as plate R?
  123. Minimum rating for stepdown transformer
  124. 6L6 Dared VP-20 issues
  125. Potentiometer Desigations/Codes
  126. 6L6 SE Tube Amp Kit on eBay... opinions?
  127. Building a VT46/PT25H PP amp
  128. Help choosing Sweat Peach FU50 or KT100
  129. New FM-3 Boards
  130. Unity-Coupled amp project
  131. Rectifier injecting noise into heater supply
  132. Tube base failures
  133. 1624 as DHT triode outputs
  134. Will this 2 stage DC DHT cct idea work?
  135. Help with Output Transformer
  136. multi cap verses add on power supply board
  137. 6AS7 hybride CCS
  138. Decware Zbox - looking for Tube buffer mods to reduce buzz
  139. Decware Zbox - looking for Tube buffer mods to reduce buzz
  140. Eico-ST-70 Advice
  141. Choosing Btw 2 EL34 China Tube Amps
  142. Looking for the GA article.
  143. Tube amp left ch. hum
  144. Did i model this PT correctly(psud2)?
  145. Help with the modifications of my tube-amp
  146. detailed photos of RH 84 build?
  147. heathkit aa-191
  148. Which KT-88 tube?
  149. 10m45s cascode diagram?
  150. What amp can make use of these large caps?
  151. Leslie 720 used with stereo keyboard
  152. Tube testers : sorting out settings for the Jackson 648
  153. Question about Shishido 2A3
  154. A micro-programmable tube tracer/tester
  155. amp with the FD422
  156. ST-35 C-1 Capacitor on PC-13 board.
  157. Transformer winding examples!!!!
  158. sansui sm-33
  159. How to mod ASL MG OTL 32 DT?
  160. 300b problem
  161. Audio Research M100s
  162. E83CC in PI or Preamp
  163. Current Dumping Amplifier
  164. Quicksilver 8417 Bias
  165. PtP wiring: Solidcore unshielded cable
  166. Removing a motor from a tube turntable.
  167. Why do I go to hamfests?
  168. Circlotron Amplifier Advice Needed
  169. Traces inside tube?
  170. Hybrid for Zobsky
  171. help identifying telefunken tubes
  172. 5U4GB Tube Power Supply Schematic
  173. Copland CTA-401 - early layout ?
  174. AVO CT160: Testing dual triodes
  175. Need to run heaters in output tubes, remove plate and screen safe?
  176. 1AG4 Direct Heated Pentode, Output
  177. grid stopper and grid choke on pentode input
  178. Has anyone tryied the GuiGuang 300B?
  179. Honeywell Mercury Tube?
  180. Tube audio-phoolery -- more teats on bulls
  181. Strange tube
  182. Adding a Headphone output to my amp.
  183. 6CG7 Phono/ linestage
  184. RH84 Build from old Dumont console
  185. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  186. Long Tail Pair
  187. Hickok 752A 5AR4 rectifier test?
  188. Shunt Capacitance in Output Transformer
  189. LTP vs single first stage
  190. 6n23 v. 6dj8 v. 6fq7
  191. newer than noob looking for advice on RH84
  192. 300B failed again
  193. No output transformer tube amp
  194. curious about a curious connection
  195. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  196. My new "vintage" tube radio
  197. help designing 6L6G S.E. amplifier
  198. SVT output iron as single ended
  199. is 6s2p actually equiv to 8532?
  200. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  201. Quad 22 stereo balance/ filter problem
  202. KR 2A3: problems?
  203. Philco F-1801
  204. KT88 Stereo Schematic and help
  205. Where should I connect ground reference for heater supply?
  206. Chassis size and layout question
  207. May tubes amps
  208. 12SX7 coin base tubes? Fake?
  209. Toroidal transformer on tube amp
  210. Current Mirrors in a balanced preamp
  211. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  212. High-end Tube amp kits (all-included)
  213. High Current Maida
  214. High Current Maida
  215. Balanced tube preamp schematic or kit?
  216. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  217. 2A3 PP Can my OPT do the job?
  218. 1626 / 6j4 tube amp
  219. suggestions for driver tube for 2A3
  220. Does anyone know the specs for this Chinese pentode
  221. SiliconRay Kits
  222. Advice needed for hum reduction
  223. low voltage dc tube phase splitter/12AU7
  224. Damper rectifier tubes & voltage doubler
  225. Overheating Resistors on DAC board- "HELP NEEDED"
  226. opt primary inductance and secondary load
  227. SOS-HELP-AIDE-HILFE on " DAC dilema"
  228. Transformer Mounting Direction
  229. HELP! new to working on tube amps and need help with project im going to take on
  230. Fisher 500c radio hum
  231. Modify Power supply for Tube Amp
  232. Unusual amps..
  233. Anyone make a guitar amp from an EA-3?
  234. Help with Preamp/Amp hum
  235. Question about step up in 300B PP amp
  236. How do we reach PMillet?
  237. Please help me with a few questions and a idea for an old PA
  238. nos 5y3wgt in 5e3
  239. Edcor CXSE25-8-2.5K single ended UL transformer
  240. Voltseconds ccs for the K-12 kit
  241. The Torpedo Parafeed Headphone Amplifier
  242. Tube Rectifiers do sound different
  243. 6922, a 6DJ8 replacement??
  244. QB2/250 amplifier
  245. WE 350B and 311A
  246. Single ended 300b's
  247. More power!
  248. How the magnetic affect the sound of tube amplifier
  249. Valves replacement for Copland CT402
  250. Changing valve damage

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