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  1. Output stage for a Mono FM tube tuner
  2. Want to use El Cheapo P.I. for Scott LK72 rebuild
  3. TO220 isolation kits breakdown
  4. Schematic for Sony TC-200 tape unit
  5. HV power supply with serial chokes
  6. no logo on tube
  7. Tango XE-20-600S SE OPT for preamp ?
  8. RF Voltage Amplifier
  9. Anyone deal with psvane member here?
  10. Op Amp
  11. Imbalanced LTP using 6922/E88CC
  12. OPT choice for PP1C
  13. Drawing software for P2P layout?
  14. A hybrid amplifier with PCC88 and IRFP240/9240
  15. ARC D-75A Regulator tube
  16. cap upgrade worth it?
  17. valve/tube output transformer construction
  18. 300B (or other DHT) biasing options
  19. Cathode Bypass Capacitor concern
  20. Phase splitter into push pull front end - possible?
  21. Question on push-pull OT LEads
  22. Importance of Screen Voltage of Pentode???
  23. measuring dc offset in OTL headphone amp
  24. Seeking comments on Russian KBG-MN for PS
  25. Joe List Archive
  26. grundig tk45
  27. Grid bias - sound quality of battery or PSU?
  28. Help: Western Electric 418A tubes wire in triode ?
  29. Scott 355 Tuner-Preamp
  30. 6550 internal resistance hit parade
  31. Max anode voltage and srpp/aikido amps
  32. Effect of IERC coolers on SQ
  33. Tube standoff ?
  34. YAQIN MS-650B vs Yarland PRO 845 mkIV ?
  35. New Harman Kardon Citation II
  36. Conrad johnson Preamp Volume
  37. What's the benefit of dual NFB?
  38. Over-Spec'd PT as replacement.
  39. pp KT88, IT phase splitter
  40. ID this for me?
  41. 12AX7 in starving mode Dynaco PAS3X
  42. YAQIN MS-22B. Any thoughts, please?
  43. Heathkit A7E phono section
  44. Dyna-Quik 500
  45. Driving balanced outputs
  46. Primary current feedback - any good? Help!
  47. 3C30 tube...datasheet...help !!!
  48. LEDs on input valve cathodes
  49. Help with Conrad Johnson
  50. Output Transformer Power Rating Question
  51. Little piece of glass in tube.
  52. ASL Preamp Help
  53. Start to Salivate - My Tube Amp Candidates - Your thoughts welcome
  54. Citation V OPT Diagnosis/Question...
  55. Cossor BT185 Beam tetrode
  56. Using a non-bridge (2 diode) full wave rectifier in bias supply.
  57. Amp making phase shifter noise
  58. Help, Amp distortion after on/off/on???
  59. TDO 5w resistors?
  60. Audio Research Dual 75 - Low Bias
  61. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  62. 6N16 headphone amplifier
  63. 5k plate to plate, el34 triode strapped, 400v b+
  64. russian penthodes 6J2P-EB and 6J9P.
  65. mA meter drags the circuit down
  66. Valve stage coupling capacitor leakage?
  67. Carvin Transformer
  68. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  69. RCA 6V6PP amp schematic (Schade fb)
  70. 25W Class A Hybrid Amp
  71. help testing gz32 gz34
  72. A BeamKido?
  73. Zeners and voltage regulation
  74. A2 positive bias push pull possible?
  75. EL34 burn out on Yaqin MC10T
  76. input transformer and impedance question
  77. Options for 300mA tube rectifiers
  78. Electrical flow
  79. 5AR4 @ 250mA
  80. newbie with a choke question
  81. ROCKOAL JUKEBOX 1458
  82. Who can help to recognize this tube preamp?
  83. DIY High power Audio Amplifier from Heathkit SB200
  84. ECL82 amplifier help
  85. 6146B SPICE model wanted
  86. how to install a bias meter in a cathode bias amp
  87. Stuck... Output tube for Single ended?
  88. Aikido Octal Headphone amp
  89. Impedance bridging
  90. Philips AG-9016 frequency range?
  91. fuse voltage rating?
  92. Grounding issue between turntable and tube amp
  93. Great sounding KT88 amp?
  94. Designing a Gomes i/v stage for tda1541a
  95. choke input power supply
  96. Need Help with New Amp Build, Ugly signals
  97. Amplifier Saftey
  98. Cary SLM100 question (older brand)
  99. 6n18p 6n1p 6n2p project needed
  100. Heater wiring idea?
  101. 300B Amp Testing
  102. New amp build
  103. Bamboo chassis 6P3P SE
  104. 6N23P-EB SRPP DAC output stage.
  105. Packard Plamor Schematic needed
  106. Hickok 600A
  107. Opinion; Alternate input tube socket
  108. Very Simple Attenuator For Audio Card
  109. Switchable PI, Paraphase,Cathodyne, LTP.
  110. Hmm... 4-1000As
  111. Bootstrapped anode
  112. Selecting the correct output transformer/primary impedance
  113. Caddock MK-132 or Mills MRA-12 as plate R?
  114. Minimum rating for stepdown transformer
  115. 6L6 Dared VP-20 issues
  116. Potentiometer Desigations/Codes
  117. 6L6 SE Tube Amp Kit on eBay... opinions?
  118. Building a VT46/PT25H PP amp
  119. Help choosing Sweat Peach FU50 or KT100
  120. New FM-3 Boards
  121. Unity-Coupled amp project
  122. Rectifier injecting noise into heater supply
  123. Tube base failures
  124. 1624 as DHT triode outputs
  125. Will this 2 stage DC DHT cct idea work?
  126. Help with Output Transformer
  127. multi cap verses add on power supply board
  128. 6AS7 hybride CCS
  129. Decware Zbox - looking for Tube buffer mods to reduce buzz
  130. Decware Zbox - looking for Tube buffer mods to reduce buzz
  131. Eico-ST-70 Advice
  132. Choosing Btw 2 EL34 China Tube Amps
  133. Looking for the GA article.
  134. Tube amp left ch. hum
  135. Did i model this PT correctly(psud2)?
  136. Help with the modifications of my tube-amp
  137. detailed photos of RH 84 build?
  138. heathkit aa-191
  139. Which KT-88 tube?
  140. 10m45s cascode diagram?
  141. What amp can make use of these large caps?
  142. Leslie 720 used with stereo keyboard
  143. Tube testers : sorting out settings for the Jackson 648
  144. Question about Shishido 2A3
  145. A micro-programmable tube tracer/tester
  146. amp with the FD422
  147. ST-35 C-1 Capacitor on PC-13 board.
  148. Transformer winding examples!!!!
  149. sansui sm-33
  150. How to mod ASL MG OTL 32 DT?
  151. 300b problem
  152. Audio Research M100s
  153. E83CC in PI or Preamp
  154. Current Dumping Amplifier
  155. Quicksilver 8417 Bias
  156. PtP wiring: Solidcore unshielded cable
  157. Removing a motor from a tube turntable.
  158. Why do I go to hamfests?
  159. Circlotron Amplifier Advice Needed
  160. Traces inside tube?
  161. Hybrid for Zobsky
  162. help identifying telefunken tubes
  163. 5U4GB Tube Power Supply Schematic
  164. Copland CTA-401 - early layout ?
  165. AVO CT160: Testing dual triodes
  166. Need to run heaters in output tubes, remove plate and screen safe?
  167. 1AG4 Direct Heated Pentode, Output
  168. grid stopper and grid choke on pentode input
  169. Has anyone tryied the GuiGuang 300B?
  170. Honeywell Mercury Tube?
  171. Tube audio-phoolery -- more teats on bulls
  172. Strange tube
  173. Adding a Headphone output to my amp.
  174. 6CG7 Phono/ linestage
  175. RH84 Build from old Dumont console
  176. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  177. Long Tail Pair
  178. Hickok 752A 5AR4 rectifier test?
  179. Shunt Capacitance in Output Transformer
  180. LTP vs single first stage
  181. 6n23 v. 6dj8 v. 6fq7
  182. newer than noob looking for advice on RH84
  183. 300B failed again
  184. No output transformer tube amp
  185. curious about a curious connection
  186. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  187. My new "vintage" tube radio
  188. help designing 6L6G S.E. amplifier
  189. SVT output iron as single ended
  190. is 6s2p actually equiv to 8532?
  191. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  192. Quad 22 stereo balance/ filter problem
  193. KR 2A3: problems?
  194. Philco F-1801
  195. KT88 Stereo Schematic and help
  196. Where should I connect ground reference for heater supply?
  197. Chassis size and layout question
  198. May tubes amps
  199. 12SX7 coin base tubes? Fake?
  200. Toroidal transformer on tube amp
  201. Current Mirrors in a balanced preamp
  202. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  203. High-end Tube amp kits (all-included)
  204. High Current Maida
  205. High Current Maida
  206. Balanced tube preamp schematic or kit?
  207. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  208. 2A3 PP Can my OPT do the job?
  209. 1626 / 6j4 tube amp
  210. suggestions for driver tube for 2A3
  211. Does anyone know the specs for this Chinese pentode
  212. SiliconRay Kits
  213. Advice needed for hum reduction
  214. low voltage dc tube phase splitter/12AU7
  215. Damper rectifier tubes & voltage doubler
  216. Overheating Resistors on DAC board- "HELP NEEDED"
  217. opt primary inductance and secondary load
  218. SOS-HELP-AIDE-HILFE on " DAC dilema"
  219. Transformer Mounting Direction
  220. HELP! new to working on tube amps and need help with project im going to take on
  221. Fisher 500c radio hum
  222. Modify Power supply for Tube Amp
  223. Unusual amps..
  224. Help with Preamp/Amp hum
  225. Question about step up in 300B PP amp
  226. How do we reach PMillet?
  227. Please help me with a few questions and a idea for an old PA
  228. Edcor CXSE25-8-2.5K single ended UL transformer
  229. Voltseconds ccs for the K-12 kit
  230. The Torpedo Parafeed Headphone Amplifier
  231. Tube Rectifiers do sound different
  232. 6922, a 6DJ8 replacement??
  233. QB2/250 amplifier
  234. WE 350B and 311A
  235. Single ended 300b's
  236. More power!
  237. How the magnetic affect the sound of tube amplifier
  238. Valves replacement for Copland CT402
  239. Changing valve damage
  240. Tube phono preamplifier by 12ax7
  241. Altec 353A oddity
  242. I need to lose that Hummmm
  243. Reduce B+ with zener
  244. triode and pentode 6v6 in parallel
  245. How to make mic input transformer 150:50KCT for mic tube preamp???
  246. Webcor 12AU7 is it a Mullard?
  247. Everett AO48
  248. Resurrecting old tubes
  249. Lumley ST70 Output impedance change and other questions
  250. AC Heater reference to B+

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