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  1. PSU for KT-90 PPP
  2. Noisy amp
  3. Book Recommendation for Newbies
  4. High power GU46 SE amplifier - help with certain issues
  5. BOYUU HIFI EXQUIS A10 EL34B+6N2 SE Tube Amplifier with 5Z4P rectifier: review and mod
  6. Unknown SE output transformer wiring
  7. Class A output without all the heat cheat
  8. Grid leak bias - Easy to overload?
  9. How about LTP with degenerate resistor?
  10. 1200 vdc capacitor tube amp.
  11. Telelfunken OPT
  12. Fixed bias question
  13. Question about loadline in Morgan Jones
  14. Please explain this power supply...
  15. 6SN7 - EL84 SE with interstage?
  16. 211 amp test. Square wave measures
  17. SAC thailand OPT for 211/845
  18. 6P21s
  19. 6L7M, Is there any use in audio?
  20. 958a Line Preamp
  21. What capacitors do i need for this?
  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. Tube Amp problem ?
  40. Tube preamp SS PS slight thump like dead wax on an LP
  41. Hum if volume control between midpoint and max; No hum if volume knob at max or zero
  42. SET's first ripple in a big wave ? Here it is . . .
  43. Fourier Chassis for the shipping costs
  44. 6P3S/6L6GB Amplifier from scrap parts :)
  45. Choke loaded 6ax4 bridge
  46. Transformer and choke orientation question
  47. Why some people want DC coupling in power amp?
  48. want to diy a tube preamp using only 12 volts help
  49. Russian 6p3s??
  50. Single-ended 8w amp
  51. Hovland HP 100
  52. Simple Line Stage Expanded
  53. Bridge Rectifier with Fullwave Tube
  54. Can anyone help diagnose this SOHA II amp channel?
  55. Schade and the 6C33C
  56. AMC 3030 annoying ripple noise
  57. Question and comments on SE vs PP by Eddie Vaughn
  58. 6080 PSE output Tx?
  59. Difference Between Self-Inverting Push Pull and Anti-Triode?
  60. Is this capacitor required?
  61. Why nowadays tube amplifier should play better than 1960's amplifiers?
  62. Aikido 12vac
  63. iPod to Adcom tube buffer
  64. Referencing a direct coupled output stage
  65. Long lead length to tube socket
  66. 6FH8 a strange tube for audio?
  67. Troubleshooting a µ-follower
  68. unison research unico thump on power on?
  69. CCS Not Working
  70. Allied 333 Hum
  71. EL34 Grid 3 connection
  72. The differential amplifier
  73. low power otl amplifier
  74. Using two stage opamp as first gain stage of power amp.
  75. Standing opts and lying pts?
  76. Tube substitition wanted
  77. Fatman Wi-Tube Hybrid Valve Amplifier with FatDock - No Output
  78. Operating point for 6SN7
  79. Which is the ultimate, perfect negative feedback amount you recommend in UL SE?
  80. Where to buy McIntosh Tube Amplifier Parts?
  81. comments/corrections on 6bg6 pp triode amp
  82. Question about LTP in Morgan Jones' book
  83. Matching 16 ohm loudspeaker into 8 ohm output transformer: can i do any modification?
  84. EL34 SE ultralinear configuration working as a triode: pro and cons
  85. First Build Help Needed - Transformer
  86. dynaco st70 headphone amp
  87. Velleman 4040 rebuild
  88. help needed for heater wiring of a 300B
  89. Best UX4 sockets?
  90. Filson 216 phono rework, advice please
  91. IRFS820B
  92. Help converting integrated amp to preamp
  93. 6N16B triodes: asking advice
  94. D3a IV
  95. stability of bias of KT88 in Xindak V30
  96. half 6SN7 / 6CG7 7pin mini substitute?
  97. Simple Line Stage
  98. 6L6GC redplating - what say you please?
  99. Yaqin MC-10L no bass response
  100. My first phono pre
  101. Fet rectifier?
  102. PSpice simulation
  103. Two-cases amplifier, question about power switch
  104. VTL bias problems compact 100
  105. Assembly Manual heathkit a7-b
  106. Question about CCS used in Morgan Jones' book.
  107. Layout question -- Do PS chokes inject hum into output caps?
  108. Pickering 132e record compensator
  109. Gain in Aikido for F4 + fe208ez?
  110. Audio note kit 1 power transformer
  111. DC Cancellation using Secondary Winding of Gapless OPT
  112. help for power transformer for scott 99d amp
  113. New rack mounted chassis
  114. Altec 342B bridging
  115. Kofi's Uniamp
  116. Please help with vexing grounding issue
  117. 6V6 class A2
  118. Buzzing Preamp
  119. 6922/E88CC in Parallel Mode without Cathode Resistors?
  120. 211 based on iGoliath Amplifier
  121. Art Audio UK dm vps
  122. Power supply conversion.
  123. EL84/6BQ5 tube amp project
  124. Little Bear P8 Amp Questions.
  125. 6k6 gt rca radiotron tube ?????
  126. The Guiguang 300B have good bass ?
  127. Ampex 300 Input Transformer
  128. Recap Heathkit A-7 amplifier.
  129. Testing KT-120
  130. 27GB5/PL504 The Same?
  131. Running Eico ST70 at 90 volts.
  132. TU-8200 with speakers 94db
  133. Magic behind Mentor
  134. dn2540 noise
  135. Rectifier PIV derated for altitude ?
  136. CLC psu for headamp?
  137. Teeco 610d amplifier schematic
  138. Has anyone tried the Aleph CCS in a tube amp?
  139. Question on 6 pin umbilical cord for tube power supply
  140. Transformer Spacing
  141. Can this be done?
  142. Low Voltage (60V) Stereo Tube Amplifier for Dummies (2+2W)
  143. Comparing OPS.
  144. Question on PSUD2 or My Ignorance!
  145. 8BU11 pentode section driving output transformer
  146. Schematic for Cary 300SEI
  147. parallel tubes
  148. 211 grid current
  149. Issues with Mcintosh MC2000
  150. 833a spud amplifier
  151. Klipsch 6.5" Bookshelf Good for 1W SE?
  152. Pete Millett Compactron Triple triode push-pull driver PCB for 6L6GC AB2 amp
  153. Sonic Frontiers Line 3 tubes and cap recommendations
  154. Problem with my Tentlab Transport
  155. Cheap and Cheerful GE 35EH5 SE Amp That Hums
  156. Bench Power Supply Safety
  157. Comments on this preamp?
  158. VoltSecond things that make You say OUCH!
  159. 'Selectron' tubes: From where?
  160. Tony's 6C33 pp amp build progress....
  161. power transformer voltage change
  162. Getting the Urge to Play More
  163. Valve Testing - Help
  164. 10Y/VT-25
  165. GM-70 Socket
  166. Radical Reshape of Magnavox Console Amp
  167. JC Morrison
  168. Daven 3 tube amplifier
  169. ecc82/83 questions
  170. Australian AWV Valve Date Codes
  171. Increasing feedback to Tubelab simple pp
  172. Anyone need a 5U4 ?
  173. Help in identify manufacturer (chicken feet?)
  174. g1 grid stoppers
  175. Lot of tubes needs a new home.....
  176. Differential Bias
  177. British Vacuum Cleaner £ Eng Co Ltd - Goblin
  178. Tube Preamp (my first)
  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. Diy toroid transformers for 5E3 guitar amp?
  187. Between 5AR4/GZ34, 6CH3/6CJ3 and 6D22S anode resistance
  188. One-tube simple amplifier sound experiment
  189. CK1006 ignition voltage?
  190. First build- dual mono octal linestage
  191. schematic for Baldwin 3 chan organ amp
  192. output transformer inquiry.
  193. 807 triode strapped amp - few questions
  194. HV power supply with filament bias
  195. newbie with oldie! (klemt m40 valve amp)
  196. too high voltage supply HELP
  197. 6Y6G Triode Curves
  198. A Tube buffer question from a Tube newbie
  199. Marantz 7c Question - HELP !
  200. Western Electric 555 receiver (Horn Driver)
  201. Getter heater & B+ sequencing ?
  202. Tube Amplifier with 30P1S SE
  203. Little OTL / Class " A "
  204. ATC SEMITEC DIODE, CURRENT REGULATOR
  205. seperate heater transformer advice please
  206. MQ 420-SL OTs
  207. Frequency Response of Williamson Amplifier in LTspice
  208. Edcor transformer upgrade for K12G tube amp?
  209. Transformers placement under PCB
  210. OT PP Hashimoto HW-100-5 tube amp?
  211. Winding an output transformer for headphones ? Some questions
  212. Push Pull OPT Primary Impedance
  213. Tube compliment substitution question. 6gw8 to ?
  214. Watts or Db/watt ?
  215. A question about the OPT Design Assistant software and Impedance matching
  216. XF86
  217. GM70 OTL ???
  218. Output transformer impedance matching
  219. Distortion in 1 channel
  220. HV Electrolytic Caps Question
  221. need to know operating voltage for 6f6 tube amp
  222. The 2A3 build is in dream state
  223. Alembic F2B clone hum & noise
  224. Spice Question
  225. Are large SE amps like 211/845 viable!
  226. Power transformer & heater wiring questions
  227. Parallel KT88 SET Amp
  228. Why people keep talking about using pentodes in triode mode for power amp?
  229. Mono series attenuators vs. PEC for balance control?
  230. TubeTech e813cc Pair for sale on eBay.
  231. Help with new pp kt77
  232. Is 5 Watts enough?
  233. First amp advice for a Newbie
  234. Tube/valve stuff in Tokyo
  235. Advice for a neophyte
  236. EML300B reliability
  237. User's Manual Golden Tube SEP1
  238. DIY to compete with commercial
  239. Ferrite Core vs. Laminations for 2 watt OPT
  240. generating burst waveform in OrCAD® Capture program
  241. O.T. with Litz wire
  242. Valve upgrade T.A.C. 34MK
  243. Another KT88 SE Abdellah with bias issues
  244. Lowering plate dissipation
  245. A helping hand with a diyed 5687 pre, anyone?
  246. Curtis Mathes Royal Dane
  247. Buzzing decreasing with volume
  248. Fluro Ballast as DIY choke?
  249. 5R4GA ws 5R4WGB
  250. Vintage Webcor Reel to Reel Cap Value Replacement

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