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  1. DC coupled Sand 'n Glass with Current Feedback
  2. Yaqin 100B fire and spares
  3. Pls help with a preamp
  4. Questions about Aikdo all in one octal
  5. Did I get used to my amp's sound?
  6. Michaelson and Austin TVA1 revB
  7. Joy of birth - a new preamp brought to the world
  8. 5U4G
  9. 6N6P best musicality? Help with modes.
  10. Identifying this capacitor in my Cayin TA-30 amp
  11. GU50 Push-Pull version1
  12. Common mode feedback
  13. Stuck with repair ;(
  14. active hum cancellation. PCB idea?
  15. Why this huge cap is so light?
  16. OPT performance
  17. Tung Sol ECC803S reissue - thumbs down
  18. In a search for a 6CG7 line stage schematic
  19. Output stage for a Mono FM tube tuner
  20. Want to use El Cheapo P.I. for Scott LK72 rebuild
  21. TO220 isolation kits breakdown
  22. Schematic for Sony TC-200 tape unit
  23. HV power supply with serial chokes
  24. no logo on tube
  25. Tango XE-20-600S SE OPT for preamp ?
  26. RF Voltage Amplifier
  27. Anyone deal with psvane member here?
  28. Op Amp
  29. Imbalanced LTP using 6922/E88CC
  30. OPT choice for PP1C
  31. Drawing software for P2P layout?
  32. A hybrid amplifier with PCC88 and IRFP240/9240
  33. ARC D-75A Regulator tube
  34. cap upgrade worth it?
  35. valve/tube output transformer construction
  36. 300B (or other DHT) biasing options
  37. Cathode Bypass Capacitor concern
  38. Phase splitter into push pull front end - possible?
  39. Question on push-pull OT LEads
  40. Importance of Screen Voltage of Pentode???
  41. measuring dc offset in OTL headphone amp
  42. Seeking comments on Russian KBG-MN for PS
  43. Joe List Archive
  44. grundig tk45
  45. Grid bias - sound quality of battery or PSU?
  46. Help: Western Electric 418A tubes wire in triode ?
  47. Scott 355 Tuner-Preamp
  48. 6550 internal resistance hit parade
  49. Max anode voltage and srpp/aikido amps
  50. Effect of IERC coolers on SQ
  51. Tube standoff ?
  52. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  53. New Harman Kardon Citation II
  54. Conrad johnson Preamp Volume
  55. What's the benefit of dual NFB?
  56. Over-Spec'd PT as replacement.
  57. pp KT88, IT phase splitter
  58. ID this for me?
  59. 12AX7 in starving mode Dynaco PAS3X
  60. YAQIN MS-22B. Any thoughts, please?
  61. Heathkit A7E phono section
  62. Dyna-Quik 500
  63. Driving balanced outputs
  64. Primary current feedback - any good? Help!
  65. 3C30 tube...datasheet...help !!!
  66. LEDs on input valve cathodes
  67. Help with Conrad Johnson
  68. Output Transformer Power Rating Question
  69. Little piece of glass in tube.
  70. ASL Preamp Help
  71. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  72. Citation V OPT Diagnosis/Question...
  73. Cossor BT185 Beam tetrode
  74. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  75. Amp making phase shifter noise
  76. Help, Amp distortion after on/off/on???
  77. TDO 5w resistors?
  78. Audio Research Dual 75 - Low Bias
  79. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  80. 6N16 headphone amplifier
  81. 5k plate to plate, el34 triode strapped, 400v b+
  82. russian penthodes 6J2P-EB and 6J9P.
  83. mA meter drags the circuit down
  84. Valve stage coupling capacitor leakage?
  85. Carvin Transformer
  86. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  87. RCA 6V6PP amp schematic (Schade fb)
  88. 25W Class A Hybrid Amp
  89. help testing gz32 gz34
  90. A BeamKido?
  91. Zeners and voltage regulation
  92. A2 positive bias push pull possible?
  93. EL34 burn out on Yaqin MC10T
  94. input transformer and impedance question
  95. Options for 300mA tube rectifiers
  96. Electrical flow
  97. 5AR4 @ 250mA
  98. newbie with a choke question
  99. ROCKOAL JUKEBOX 1458
  100. Who can help to recognize this tube preamp?
  101. DIY High power Audio Amplifier from Heathkit SB200
  102. ECL82 amplifier help
  103. 6146B SPICE model wanted
  104. how to install a bias meter in a cathode bias amp
  105. Stuck... Output tube for Single ended?
  106. Aikido Octal Headphone amp
  107. Impedance bridging
  108. Philips AG-9016 frequency range?
  109. fuse voltage rating?
  110. Grounding issue between turntable and tube amp
  111. Great sounding KT88 amp?
  112. Designing a Gomes i/v stage for tda1541a
  113. choke input power supply
  114. Need Help with New Amp Build, Ugly signals
  115. Amplifier Saftey
  116. Cary SLM100 question (older brand)
  117. 6n18p 6n1p 6n2p project needed
  118. Heater wiring idea?
  119. 300B Amp Testing
  120. New amp build
  121. Bamboo chassis 6P3P SE
  122. 6N23P-EB SRPP DAC output stage.
  123. Packard Plamor Schematic needed
  124. Opinion; Alternate input tube socket
  125. Very Simple Attenuator For Audio Card
  126. Switchable PI, Paraphase,Cathodyne, LTP.
  127. Hmm... 4-1000As
  128. Bootstrapped anode
  129. Selecting the correct output transformer/primary impedance
  130. Caddock MK-132 or Mills MRA-12 as plate R?
  131. Minimum rating for stepdown transformer
  132. 6L6 Dared VP-20 issues
  133. Potentiometer Desigations/Codes
  134. 6L6 SE Tube Amp Kit on eBay... opinions?
  135. Building a VT46/PT25H PP amp
  136. Help choosing Sweat Peach FU50 or KT100
  137. New FM-3 Boards
  138. Unity-Coupled amp project
  139. Rectifier injecting noise into heater supply
  140. Tube base failures
  141. 1624 as DHT triode outputs
  142. Will this 2 stage DC DHT cct idea work?
  143. Help with Output Transformer
  144. multi cap verses add on power supply board
  145. 6AS7 hybride CCS
  146. Decware Zbox - looking for Tube buffer mods to reduce buzz
  147. Decware Zbox - looking for Tube buffer mods to reduce buzz
  148. Eico-ST-70 Advice
  149. Choosing Btw 2 EL34 China Tube Amps
  150. Looking for the GA article.
  151. Tube amp left ch. hum
  152. Did i model this PT correctly(psud2)?
  153. Help with the modifications of my tube-amp
  154. detailed photos of RH 84 build?
  155. heathkit aa-191
  156. Which KT-88 tube?
  157. 10m45s cascode diagram?
  158. What amp can make use of these large caps?
  159. Leslie 720 used with stereo keyboard
  160. Tube testers : sorting out settings for the Jackson 648
  161. Question about Shishido 2A3
  162. amp with the FD422
  163. ST-35 C-1 Capacitor on PC-13 board.
  164. Transformer winding examples!!!!
  165. sansui sm-33
  166. How to mod ASL MG OTL 32 DT?
  167. 300b problem
  168. Audio Research M100s
  169. E83CC in PI or Preamp
  170. Current Dumping Amplifier
  171. Quicksilver 8417 Bias
  172. PtP wiring: Solidcore unshielded cable
  173. Removing a motor from a tube turntable.
  174. Why do I go to hamfests?
  175. Circlotron Amplifier Advice Needed
  176. Traces inside tube?
  177. Hybrid for Zobsky
  178. help identifying telefunken tubes
  179. 5U4GB Tube Power Supply Schematic
  180. Copland CTA-401 - early layout ?
  181. Need to run heaters in output tubes, remove plate and screen safe?
  182. 1AG4 Direct Heated Pentode, Output
  183. grid stopper and grid choke on pentode input
  184. Has anyone tryied the GuiGuang 300B?
  185. Honeywell Mercury Tube?
  186. Tube audio-phoolery -- more teats on bulls
  187. Strange tube
  188. Adding a Headphone output to my amp.
  189. 6CG7 Phono/ linestage
  190. RH84 Build from old Dumont console
  191. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  192. Long Tail Pair
  193. Shunt Capacitance in Output Transformer
  194. LTP vs single first stage
  195. 6n23 v. 6dj8 v. 6fq7
  196. newer than noob looking for advice on RH84
  197. 300B failed again
  198. No output transformer tube amp
  199. curious about a curious connection
  200. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  201. My new "vintage" tube radio
  202. help designing 6L6G S.E. amplifier
  203. SVT output iron as single ended
  204. is 6s2p actually equiv to 8532?
  205. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  206. Quad 22 stereo balance/ filter problem
  207. KR 2A3: problems?
  208. Philco F-1801
  209. KT88 Stereo Schematic and help
  210. Where should I connect ground reference for heater supply?
  211. Chassis size and layout question
  212. May tubes amps
  213. 12SX7 coin base tubes? Fake?
  214. Toroidal transformer on tube amp
  215. Current Mirrors in a balanced preamp
  216. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  217. High-end Tube amp kits (all-included)
  218. High Current Maida
  219. High Current Maida
  220. Balanced tube preamp schematic or kit?
  221. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  222. 2A3 PP Can my OPT do the job?
  223. 1626 / 6j4 tube amp
  224. suggestions for driver tube for 2A3
  225. Does anyone know the specs for this Chinese pentode
  226. SiliconRay Kits
  227. Advice needed for hum reduction
  228. low voltage dc tube phase splitter/12AU7
  229. Damper rectifier tubes & voltage doubler
  230. Overheating Resistors on DAC board- "HELP NEEDED"
  231. opt primary inductance and secondary load
  232. SOS-HELP-AIDE-HILFE on " DAC dilema"
  233. Transformer Mounting Direction
  234. HELP! new to working on tube amps and need help with project im going to take on
  235. Fisher 500c radio hum
  236. Modify Power supply for Tube Amp
  237. Unusual amps..
  238. Help with Preamp/Amp hum
  239. Question about step up in 300B PP amp
  240. How do we reach PMillet?
  241. Please help me with a few questions and a idea for an old PA
  242. Edcor CXSE25-8-2.5K single ended UL transformer
  243. Voltseconds ccs for the K-12 kit
  244. The Torpedo Parafeed Headphone Amplifier
  245. Tube Rectifiers do sound different
  246. 6922, a 6DJ8 replacement??
  247. QB2/250 amplifier
  248. WE 350B and 311A
  249. Single ended 300b's
  250. More power!

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