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  1. Mingda mc7r late design tweaking
  2. PSU for KT-90 PPP
  3. Noisy amp
  4. Book Recommendation for Newbies
  5. High power GU46 SE amplifier - help with certain issues
  6. Boyuu hifi Equis A10 EL34B+6N2 SE Tube Amplifier with 5Z4P rectifier: review and mod
  7. Unknown SE output transformer wiring
  8. Class A output without all the heat cheat
  9. Grid leak bias - Easy to overload?
  10. How about LTP with degenerate resistor?
  11. 1200 vdc capacitor tube amp.
  12. Telefunken OPT
  13. Fixed bias question
  14. Question about loadline in Morgan Jones
  15. Please explain this power supply...
  16. 6SN7 - EL84 SE with interstage?
  17. 211 amp test. Square wave measures
  18. SAC thailand OPT for 211/845
  19. 6P21s
  20. 6L7M, Is there any use in audio?
  21. 958a Line Preamp
  22. Experience of the TentLabs Bias control modules?
  23. Simple Line Stage Topology
  24. compound/hybrid amp
  25. 6CJ3's in full wave rectifier
  26. CCS anode load overcomes 3/2 law non-linearity
  27. EL84 PP OT design for amp project
  28. $3k o/p XFR
  29. Jadis Factory Tour
  30. Considerations for Tubelab Simplse
  31. "budget" headphone amp
  32. Power Pulse Tetrode for Audio
  33. The SE UL 6P41S USSR
  34. buzz from dacmagic on kit st70
  35. WE 350B and WE311B available
  36. How determine p-g1 capacitance in trioded pentode
  37. Why Is My Single Chassis #26 PreAmp So Stable!
  38. Rare tube
  39. Allan's rantings
  40. Tube Amp problem ?
  41. Tube preamp SS PS slight thump like dead wax on an LP
  42. Hum if volume control between midpoint and max; No hum if volume knob at max or zero
  43. SET's first ripple in a big wave ? Here it is . . .
  44. Fourier Chassis for the shipping costs
  45. 6P3S/6L6GB Amplifier from scrap parts :)
  46. Choke loaded 6ax4 bridge
  47. Transformer and choke orientation question
  48. Why some people want DC coupling in power amp?
  49. want to diy a tube preamp using only 12 volts help
  50. Russian 6p3s??
  51. Single-ended 8w amp
  52. Hovland HP 100
  53. Simple Line Stage Expanded
  54. Bridge Rectifier with Fullwave Tube
  55. Can anyone help diagnose this SOHA II amp channel?
  56. Schade and the 6C33C
  57. AMC 3030 annoying ripple noise
  58. Question and comments on SE vs PP by Eddie Vaughn
  59. 6080 PSE output Tx?
  60. Difference Between Self-Inverting Push Pull and Anti-Triode?
  61. Is this capacitor required?
  62. Why nowadays tube amplifier should play better than 1960's amplifiers?
  63. Aikido 12vac
  64. iPod to Adcom tube buffer
  65. Referencing a direct coupled output stage
  66. Long lead length to tube socket
  67. 6FH8 a strange tube for audio?
  68. Troubleshooting a µ-follower
  69. unison research unico thump on power on?
  70. CCS Not Working
  71. Allied 333 Hum
  72. EL34 Grid 3 connection
  73. The differential amplifier
  74. low power otl amplifier
  75. Using two stage opamp as first gain stage of power amp.
  76. Standing opts and lying pts?
  77. Tube substitition wanted
  78. Fatman Wi-Tube Hybrid Valve Amplifier with FatDock - No Output
  79. Operating point for 6SN7
  80. Which is the ultimate, perfect negative feedback amount you recommend in UL SE?
  81. Where to buy McIntosh Tube Amplifier Parts?
  82. comments/corrections on 6bg6 pp triode amp
  83. Question about LTP in Morgan Jones' book
  84. Matching 16 ohm loudspeaker into 8 ohm output transformer: can i do any modification?
  85. EL34 SE ultralinear configuration working as a triode: pro and cons
  86. First Build Help Needed - Transformer
  87. dynaco st70 headphone amp
  88. Velleman 4040 rebuild
  89. help needed for heater wiring of a 300B
  90. Best UX4 sockets?
  91. Filson 216 phono rework, advice please
  92. IRFS820B
  93. Help converting integrated amp to preamp
  94. 6N16B triodes: asking advice
  95. D3a IV
  96. stability of bias of KT88 in Xindak V30
  97. half 6SN7 / 6CG7 7pin mini substitute?
  98. Simple Line Stage
  99. 6L6GC redplating - what say you please?
  100. Yaqin MC-10L no bass response
  101. My first phono pre
  102. Fet rectifier?
  103. PSpice simulation
  104. Two-cases amplifier, question about power switch
  105. VTL bias problems compact 100
  106. Assembly Manual heathkit a7-b
  107. Question about CCS used in Morgan Jones' book.
  108. Layout question -- Do PS chokes inject hum into output caps?
  109. Pickering 132e record compensator
  110. Gain in Aikido for F4 + fe208ez?
  111. Audio note kit 1 power transformer
  112. DC Cancellation using Secondary Winding of Gapless OPT
  113. help for power transformer for scott 99d amp
  114. New rack mounted chassis
  115. Altec 342B bridging
  116. Kofi's Uniamp
  117. Please help with vexing grounding issue
  118. 6V6 class A2
  119. Buzzing Preamp
  120. 6922/E88CC in Parallel Mode without Cathode Resistors?
  121. 211 based on iGoliath Amplifier
  122. Art Audio UK dm vps
  123. Power supply conversion.
  124. EL84/6BQ5 tube amp project
  125. Little Bear P8 Amp Questions.
  126. 6k6 gt rca radiotron tube ?????
  127. The Guiguang 300B have good bass ?
  128. Ampex 300 Input Transformer
  129. Recap Heathkit A-7 amplifier.
  130. Testing KT-120
  131. 27GB5/PL504 The Same?
  132. Running Eico ST70 at 90 volts.
  133. TU-8200 with speakers 94db
  134. Magic behind Mentor
  135. dn2540 noise
  136. Rectifier PIV derated for altitude ?
  137. CLC psu for headamp?
  138. Teeco 610d amplifier schematic
  139. Has anyone tried the Aleph CCS in a tube amp?
  140. Question on 6 pin umbilical cord for tube power supply
  141. Transformer Spacing
  142. Can this be done?
  143. Low Voltage (60V) Stereo Tube Amplifier for Dummies (2+2W)
  144. Comparing OPS.
  145. Question on PSUD2 or My Ignorance!
  146. 8BU11 pentode section driving output transformer
  147. Schematic for Cary 300SEI
  148. parallel tubes
  149. 211 grid current
  150. Issues with Mcintosh MC2000
  151. 833a spud amplifier
  152. Klipsch 6.5" Bookshelf Good for 1W SE?
  153. Pete Millett Compactron Triple triode push-pull driver PCB for 6L6GC AB2 amp
  154. Sonic Frontiers Line 3 tubes and cap recommendations
  155. Problem with my Tentlab Transport
  156. Cheap and Cheerful GE 35EH5 SE Amp That Hums
  157. Bench Power Supply Safety
  158. Comments on this preamp?
  159. VoltSecond things that make You say OUCH!
  160. 'Selectron' tubes: From where?
  161. Tony's 6C33 pp amp build progress....
  162. power transformer voltage change
  163. Getting the Urge to Play More
  164. Valve Testing - Help
  165. 10Y/VT-25
  166. GM-70 Socket
  167. Radical Reshape of Magnavox Console Amp
  168. JC Morrison
  169. Daven 3 tube amplifier
  170. ecc82/83 questions
  171. Australian AWV Valve Date Codes
  172. Increasing feedback to Tubelab simple pp
  173. Anyone need a 5U4 ?
  174. Help in identify manufacturer (chicken feet?)
  175. g1 grid stoppers
  176. Lot of tubes needs a new home.....
  177. Differential Bias
  178. British Vacuum Cleaner £ Eng Co Ltd - Goblin
  179. output cap and stepped vol advice. Cary SLP50
  180. Sony TC-500 Gives Its All
  181. Another 211 monobloc
  182. 6N1P-EV Voskhod or Anod manufactured better sounding?
  183. help with long tail pair bandwidth
  184. Anyone have both an Eico HF-81 and Akai M-8?
  185. Sylvania Engineering Sample 12ax7
  186. Between 5AR4/GZ34, 6CH3/6CJ3 and 6D22S anode resistance
  187. One-tube simple amplifier sound experiment
  188. CK1006 ignition voltage?
  189. First build- dual mono octal linestage
  190. schematic for Baldwin 3 chan organ amp
  191. output transformer inquiry.
  192. 807 triode strapped amp - few questions
  193. HV power supply with filament bias
  194. newbie with oldie! (klemt m40 valve amp)
  195. too high voltage supply HELP
  196. 6Y6G Triode Curves
  197. A Tube buffer question from a Tube newbie
  198. Marantz 7c Question - HELP !
  199. Western Electric 555 receiver (Horn Driver)
  200. Getter heater & B+ sequencing ?
  201. Tube Amplifier with 30P1S SE
  202. Little OTL / Class " A "
  203. ATC SEMITEC DIODE, CURRENT REGULATOR
  204. seperate heater transformer advice please
  205. MQ 420-SL OTs
  206. Frequency Response of Williamson Amplifier in LTspice
  207. Edcor transformer upgrade for K12G tube amp?
  208. Transformers placement under PCB
  209. OT PP Hashimoto HW-100-5 tube amp?
  210. Winding an output transformer for headphones ? Some questions
  211. Push Pull OPT Primary Impedance
  212. Tube compliment substitution question. 6gw8 to ?
  213. Watts or Db/watt ?
  214. A question about the OPT Design Assistant software and Impedance matching
  215. XF86
  216. GM70 OTL ???
  217. Output transformer impedance matching
  218. Distortion in 1 channel
  219. need to know operating voltage for 6f6 tube amp
  220. The 2A3 build is in dream state
  221. Alembic F2B clone hum & noise
  222. Spice Question
  223. Are large SE amps like 211/845 viable!
  224. Power transformer & heater wiring questions
  225. Parallel KT88 SET Amp
  226. Why people keep talking about using pentodes in triode mode for power amp?
  227. Mono series attenuators vs. PEC for balance control?
  228. TubeTech e813cc Pair for sale on eBay.
  229. Help with new pp kt77
  230. Is 5 Watts enough?
  231. First amp advice for a Newbie
  232. Tube/valve stuff in Tokyo
  233. Advice for a neophyte
  234. EML300B reliability
  235. User's Manual Golden Tube SEP1
  236. DIY to compete with commercial
  237. Ferrite Core vs. Laminations for 2 watt OPT
  238. generating burst waveform in OrCAD® Capture program
  239. O.T. with Litz wire
  240. Valve upgrade T.A.C. 34MK
  241. Another KT88 SE Abdellah with bias issues
  242. Lowering plate dissipation
  243. A helping hand with a diyed 5687 pre, anyone?
  244. Curtis Mathes Royal Dane
  245. Buzzing decreasing with volume
  246. Fluro Ballast as DIY choke?
  247. 5R4GA ws 5R4WGB
  248. Vintage Webcor Reel to Reel Cap Value Replacement
  249. Coupling Capacitor question
  250. Aikido preamp: 12AU7 or 6CF7/6FQ7 ???

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