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  1. Seeking 6ME5 data and connection diagram
  2. 12BK5 UL tracing gone boosted triode?
  3. Difference between OPT
  4. Tweaking PP AMP Suggestions Please
  5. DC coupled Sand 'n Glass with Current Feedback
  6. Yaqin 100B fire and spares
  7. Pls help with a preamp
  8. Questions about Aikdo all in one octal
  9. Did I get used to my amp's sound?
  10. Michaelson and Austin TVA1 revB
  11. Joy of birth - a new preamp brought to the world
  12. 5U4G
  13. 6N6P best musicality? Help with modes.
  14. Identifying this capacitor in my Cayin TA-30 amp
  15. GU50 Push-Pull version1
  16. Common mode feedback
  17. Stuck with repair ;(
  18. active hum cancellation. PCB idea?
  19. Why this huge cap is so light?
  20. OPT performance
  21. Tung Sol ECC803S reissue - thumbs down
  22. In a search for a 6CG7 line stage schematic
  23. Output stage for a Mono FM tube tuner
  24. Want to use El Cheapo P.I. for Scott LK72 rebuild
  25. TO220 isolation kits breakdown
  26. Schematic for Sony TC-200 tape unit
  27. HV power supply with serial chokes
  28. no logo on tube
  29. Tango XE-20-600S SE OPT for preamp ?
  30. RF Voltage Amplifier
  31. Anyone deal with psvane member here?
  32. Op Amp
  33. Imbalanced LTP using 6922/E88CC
  34. OPT choice for PP1C
  35. Drawing software for P2P layout?
  36. A hybrid amplifier with PCC88 and IRFP240/9240
  37. ARC D-75A Regulator tube
  38. cap upgrade worth it?
  39. valve/tube output transformer construction
  40. 300B (or other DHT) biasing options
  41. Cathode Bypass Capacitor concern
  42. Phase splitter into push pull front end - possible?
  43. Question on push-pull OT LEads
  44. Importance of Screen Voltage of Pentode???
  45. measuring dc offset in OTL headphone amp
  46. Seeking comments on Russian KBG-MN for PS
  47. Joe List Archive
  48. grundig tk45
  49. Grid bias - sound quality of battery or PSU?
  50. Help: Western Electric 418A tubes wire in triode ?
  51. Scott 355 Tuner-Preamp
  52. 6550 internal resistance hit parade
  53. Max anode voltage and srpp/aikido amps
  54. Effect of IERC coolers on SQ
  55. Tube standoff ?
  56. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  57. New Harman Kardon Citation II
  58. Conrad johnson Preamp Volume
  59. What's the benefit of dual NFB?
  60. Over-Spec'd PT as replacement.
  61. pp KT88, IT phase splitter
  62. ID this for me?
  63. 12AX7 in starving mode Dynaco PAS3X
  64. YAQIN MS-22B. Any thoughts, please?
  65. Heathkit A7E phono section
  66. Dyna-Quik 500
  67. Driving balanced outputs
  68. Primary current feedback - any good? Help!
  69. 3C30 tube...datasheet...help !!!
  70. LEDs on input valve cathodes
  71. Help with Conrad Johnson
  72. Output Transformer Power Rating Question
  73. Little piece of glass in tube.
  74. ASL Preamp Help
  75. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  76. Citation V OPT Diagnosis/Question...
  77. Cossor BT185 Beam tetrode
  78. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  79. Amp making phase shifter noise
  80. Help, Amp distortion after on/off/on???
  81. TDO 5w resistors?
  82. Audio Research Dual 75 - Low Bias
  83. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  84. 6N16 headphone amplifier
  85. 5k plate to plate, el34 triode strapped, 400v b+
  86. russian penthodes 6J2P-EB and 6J9P.
  87. mA meter drags the circuit down
  88. Valve stage coupling capacitor leakage?
  89. Carvin Transformer
  90. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  91. RCA 6V6PP amp schematic (Schade fb)
  92. 25W Class A Hybrid Amp
  93. help testing gz32 gz34
  94. A BeamKido?
  95. Zeners and voltage regulation
  96. A2 positive bias push pull possible?
  97. EL34 burn out on Yaqin MC10T
  98. input transformer and impedance question
  99. Options for 300mA tube rectifiers
  100. Electrical flow
  101. 5AR4 @ 250mA
  102. newbie with a choke question
  103. ROCKOAL JUKEBOX 1458
  104. Who can help to recognize this tube preamp?
  105. DIY High power Audio Amplifier from Heathkit SB200
  106. ECL82 amplifier help
  107. 6146B SPICE model wanted
  108. how to install a bias meter in a cathode bias amp
  109. Stuck... Output tube for Single ended?
  110. Aikido Octal Headphone amp
  111. Impedance bridging
  112. Philips AG-9016 frequency range?
  113. fuse voltage rating?
  114. Grounding issue between turntable and tube amp
  115. Great sounding KT88 amp?
  116. Designing a Gomes i/v stage for tda1541a
  117. choke input power supply
  118. Need Help with New Amp Build, Ugly signals
  119. Amplifier Saftey
  120. Cary SLM100 question (older brand)
  121. 6n18p 6n1p 6n2p project needed
  122. Heater wiring idea?
  123. 300B Amp Testing
  124. New amp build
  125. Bamboo chassis 6P3P SE
  126. 6N23P-EB SRPP DAC output stage.
  127. Packard Plamor Schematic needed
  128. Hickok 600A
  129. Opinion; Alternate input tube socket
  130. Very Simple Attenuator For Audio Card
  131. Switchable PI, Paraphase,Cathodyne, LTP.
  132. Hmm... 4-1000As
  133. Bootstrapped anode
  134. Selecting the correct output transformer/primary impedance
  135. Caddock MK-132 or Mills MRA-12 as plate R?
  136. Minimum rating for stepdown transformer
  137. 6L6 Dared VP-20 issues
  138. Potentiometer Desigations/Codes
  139. 6L6 SE Tube Amp Kit on eBay... opinions?
  140. Building a VT46/PT25H PP amp
  141. Help choosing Sweat Peach FU50 or KT100
  142. New FM-3 Boards
  143. Unity-Coupled amp project
  144. Rectifier injecting noise into heater supply
  145. Tube base failures
  146. 1624 as DHT triode outputs
  147. Will this 2 stage DC DHT cct idea work?
  148. Help with Output Transformer
  149. multi cap verses add on power supply board
  150. 6AS7 hybride CCS
  151. Decware Zbox - looking for Tube buffer mods to reduce buzz
  152. Decware Zbox - looking for Tube buffer mods to reduce buzz
  153. Eico-ST-70 Advice
  154. Choosing Btw 2 EL34 China Tube Amps
  155. Looking for the GA article.
  156. Tube amp left ch. hum
  157. Did i model this PT correctly(psud2)?
  158. Help with the modifications of my tube-amp
  159. detailed photos of RH 84 build?
  160. heathkit aa-191
  161. Which KT-88 tube?
  162. 10m45s cascode diagram?
  163. What amp can make use of these large caps?
  164. Leslie 720 used with stereo keyboard
  165. Tube testers : sorting out settings for the Jackson 648
  166. Question about Shishido 2A3
  167. amp with the FD422
  168. ST-35 C-1 Capacitor on PC-13 board.
  169. Transformer winding examples!!!!
  170. sansui sm-33
  171. How to mod ASL MG OTL 32 DT?
  172. 300b problem
  173. Audio Research M100s
  174. E83CC in PI or Preamp
  175. Current Dumping Amplifier
  176. Quicksilver 8417 Bias
  177. PtP wiring: Solidcore unshielded cable
  178. Removing a motor from a tube turntable.
  179. Why do I go to hamfests?
  180. Circlotron Amplifier Advice Needed
  181. Traces inside tube?
  182. Hybrid for Zobsky
  183. help identifying telefunken tubes
  184. 5U4GB Tube Power Supply Schematic
  185. Copland CTA-401 - early layout ?
  186. AVO CT160: Testing dual triodes
  187. Need to run heaters in output tubes, remove plate and screen safe?
  188. 1AG4 Direct Heated Pentode, Output
  189. grid stopper and grid choke on pentode input
  190. Has anyone tryied the GuiGuang 300B?
  191. Honeywell Mercury Tube?
  192. Tube audio-phoolery -- more teats on bulls
  193. Strange tube
  194. Adding a Headphone output to my amp.
  195. 6CG7 Phono/ linestage
  196. RH84 Build from old Dumont console
  197. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  198. Long Tail Pair
  199. Hickok 752A 5AR4 rectifier test?
  200. Shunt Capacitance in Output Transformer
  201. LTP vs single first stage
  202. 6n23 v. 6dj8 v. 6fq7
  203. newer than noob looking for advice on RH84
  204. 300B failed again
  205. No output transformer tube amp
  206. curious about a curious connection
  207. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  208. My new "vintage" tube radio
  209. help designing 6L6G S.E. amplifier
  210. SVT output iron as single ended
  211. is 6s2p actually equiv to 8532?
  212. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  213. Quad 22 stereo balance/ filter problem
  214. KR 2A3: problems?
  215. Philco F-1801
  216. KT88 Stereo Schematic and help
  217. Where should I connect ground reference for heater supply?
  218. Chassis size and layout question
  219. May tubes amps
  220. 12SX7 coin base tubes? Fake?
  221. Toroidal transformer on tube amp
  222. Current Mirrors in a balanced preamp
  223. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  224. High-end Tube amp kits (all-included)
  225. High Current Maida
  226. High Current Maida
  227. Balanced tube preamp schematic or kit?
  228. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  229. 2A3 PP Can my OPT do the job?
  230. 1626 / 6j4 tube amp
  231. suggestions for driver tube for 2A3
  232. Does anyone know the specs for this Chinese pentode
  233. SiliconRay Kits
  234. Advice needed for hum reduction
  235. low voltage dc tube phase splitter/12AU7
  236. Damper rectifier tubes & voltage doubler
  237. Overheating Resistors on DAC board- "HELP NEEDED"
  238. opt primary inductance and secondary load
  239. SOS-HELP-AIDE-HILFE on " DAC dilema"
  240. Transformer Mounting Direction
  241. HELP! new to working on tube amps and need help with project im going to take on
  242. Fisher 500c radio hum
  243. Modify Power supply for Tube Amp
  244. Unusual amps..
  245. Help with Preamp/Amp hum
  246. Question about step up in 300B PP amp
  247. How do we reach PMillet?
  248. Please help me with a few questions and a idea for an old PA
  249. Edcor CXSE25-8-2.5K single ended UL transformer
  250. Voltseconds ccs for the K-12 kit

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