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  1. iPod to Adcom tube buffer
  2. Referencing a direct coupled output stage
  3. Long lead length to tube socket
  4. 6FH8 a strange tube for audio?
  5. Troubleshooting a µ-follower
  6. unison research unico thump on power on?
  7. CCS Not Working
  8. Allied 333 Hum
  9. EL34 Grid 3 connection
  10. The differential amplifier
  11. low power otl amplifier
  12. Using two stage opamp as first gain stage of power amp.
  13. Standing opts and lying pts?
  14. Tube substitition wanted
  15. Fatman Wi-Tube Hybrid Valve Amplifier with FatDock - No Output
  16. Operating point for 6SN7
  17. Which is the ultimate, perfect negative feedback amount you recommend in UL SE?
  18. Where to buy McIntosh Tube Amplifier Parts?
  19. comments/corrections on 6bg6 pp triode amp
  20. Question about LTP in Morgan Jones' book
  21. Matching 16 ohm loudspeaker into 8 ohm output transformer: can i do any modification?
  22. EL34 SE ultralinear configuration working as a triode: pro and cons
  23. First Build Help Needed - Transformer
  24. dynaco st70 headphone amp
  25. Velleman 4040 rebuild
  26. help needed for heater wiring of a 300B
  27. Best UX4 sockets?
  28. Filson 216 phono rework, advice please
  29. IRFS820B
  30. Help converting integrated amp to preamp
  31. 6N16B triodes: asking advice
  32. D3a IV
  33. stability of bias of KT88 in Xindak V30
  34. half 6SN7 / 6CG7 7pin mini substitute?
  35. Simple Line Stage
  36. 6L6GC redplating - what say you please?
  37. Yaqin MC-10L no bass response
  38. My first phono pre
  39. Fet rectifier?
  40. PSpice simulation
  41. Two-cases amplifier, question about power switch
  42. VTL bias problems compact 100
  43. Assembly Manual heathkit a7-b
  44. Question about CCS used in Morgan Jones' book.
  45. Layout question -- Do PS chokes inject hum into output caps?
  46. Pickering 132e record compensator
  47. Gain in Aikido for F4 + fe208ez?
  48. Audio note kit 1 power transformer
  49. DC Cancellation using Secondary Winding of Gapless OPT
  50. help for power transformer for scott 99d amp
  51. New rack mounted chassis
  52. Altec 342B bridging
  53. Kofi's Uniamp
  54. Please help with vexing grounding issue
  55. 6V6 class A2
  56. Buzzing Preamp
  57. 6922/E88CC in Parallel Mode without Cathode Resistors?
  58. 211 based on iGoliath Amplifier
  59. Art Audio UK dm vps
  60. Power supply conversion.
  61. EL84/6BQ5 tube amp project
  62. Little Bear P8 Amp Questions.
  63. 6k6 gt rca radiotron tube ?????
  64. The Guiguang 300B have good bass ?
  65. Ampex 300 Input Transformer
  66. Recap Heathkit A-7 amplifier.
  67. Testing KT-120
  68. 27GB5/PL504 The Same?
  69. Running Eico ST70 at 90 volts.
  70. TU-8200 with speakers 94db
  71. Magic behind Mentor
  72. dn2540 noise
  73. Rectifier PIV derated for altitude ?
  74. CLC psu for headamp?
  75. Teeco 610d amplifier schematic
  76. Has anyone tried the Aleph CCS in a tube amp?
  77. Question on 6 pin umbilical cord for tube power supply
  78. Transformer Spacing
  79. Can this be done?
  80. Low Voltage (60V) Stereo Tube Amplifier for Dummies (2+2W)
  81. Comparing OPS.
  82. Question on PSUD2 or My Ignorance!
  83. 8BU11 pentode section driving output transformer
  84. Schematic for Cary 300SEI
  85. parallel tubes
  86. 211 grid current
  87. Issues with Mcintosh MC2000
  88. 833a spud amplifier
  89. Klipsch 6.5" Bookshelf Good for 1W SE?
  90. Pete Millett Compactron Triple triode push-pull driver PCB for 6L6GC AB2 amp
  91. Sonic Frontiers Line 3 tubes and cap recommendations
  92. Problem with my Tentlab Transport
  93. Cheap and Cheerful GE 35EH5 SE Amp That Hums
  94. Bench Power Supply Safety
  95. Comments on this preamp?
  96. VoltSecond things that make You say OUCH!
  97. 'Selectron' tubes: From where?
  98. Tony's 6C33 pp amp build progress....
  99. power transformer voltage change
  100. Getting the Urge to Play More
  101. Valve Testing - Help
  102. 10Y/VT-25
  103. GM-70 Socket
  104. Radical Reshape of Magnavox Console Amp
  105. JC Morrison
  106. Daven 3 tube amplifier
  107. ecc82/83 questions
  108. Australian AWV Valve Date Codes
  109. Increasing feedback to Tubelab simple pp
  110. Anyone need a 5U4 ?
  111. Help in identify manufacturer (chicken feet?)
  112. g1 grid stoppers
  113. Lot of tubes needs a new home.....
  114. Differential Bias
  115. British Vacuum Cleaner £ Eng Co Ltd - Goblin
  116. output cap and stepped vol advice. Cary SLP50
  117. Sony TC-500 Gives Its All
  118. Another 211 monobloc
  119. 6N1P-EV Voskhod or Anod manufactured better sounding?
  120. help with long tail pair bandwidth
  121. Anyone have both an Eico HF-81 and Akai M-8?
  122. Sylvania Engineering Sample 12ax7
  123. Between 5AR4/GZ34, 6CH3/6CJ3 and 6D22S anode resistance
  124. One-tube simple amplifier sound experiment
  125. CK1006 ignition voltage?
  126. First build- dual mono octal linestage
  127. schematic for Baldwin 3 chan organ amp
  128. output transformer inquiry.
  129. 807 triode strapped amp - few questions
  130. HV power supply with filament bias
  131. newbie with oldie! (klemt m40 valve amp)
  132. too high voltage supply HELP
  133. 6Y6G Triode Curves
  134. A Tube buffer question from a Tube newbie
  135. Marantz 7c Question - HELP !
  136. Western Electric 555 receiver (Horn Driver)
  137. Getter heater & B+ sequencing ?
  138. Tube Amplifier with 30P1S SE
  139. Little OTL / Class " A "
  140. ATC SEMITEC DIODE, CURRENT REGULATOR
  141. seperate heater transformer advice please
  142. MQ 420-SL OTs
  143. Frequency Response of Williamson Amplifier in LTspice
  144. Edcor transformer upgrade for K12G tube amp?
  145. Transformers placement under PCB
  146. OT PP Hashimoto HW-100-5 tube amp?
  147. Winding an output transformer for headphones ? Some questions
  148. Push Pull OPT Primary Impedance
  149. Tube compliment substitution question. 6gw8 to ?
  150. Watts or Db/watt ?
  151. A question about the OPT Design Assistant software and Impedance matching
  152. XF86
  153. GM70 OTL ???
  154. Output transformer impedance matching
  155. Distortion in 1 channel
  156. need to know operating voltage for 6f6 tube amp
  157. The 2A3 build is in dream state
  158. Alembic F2B clone hum & noise
  159. Spice Question
  160. Are large SE amps like 211/845 viable!
  161. Power transformer & heater wiring questions
  162. Parallel KT88 SET Amp
  163. Why people keep talking about using pentodes in triode mode for power amp?
  164. Mono series attenuators vs. PEC for balance control?
  165. TubeTech e813cc Pair for sale on eBay.
  166. Help with new pp kt77
  167. Is 5 Watts enough?
  168. First amp advice for a Newbie
  169. Tube/valve stuff in Tokyo
  170. Advice for a neophyte
  171. EML300B reliability
  172. User's Manual Golden Tube SEP1
  173. DIY to compete with commercial
  174. Ferrite Core vs. Laminations for 2 watt OPT
  175. generating burst waveform in OrCAD® Capture program
  176. O.T. with Litz wire
  177. Valve upgrade T.A.C. 34MK
  178. Another KT88 SE Abdellah with bias issues
  179. Lowering plate dissipation
  180. A helping hand with a diyed 5687 pre, anyone?
  181. Curtis Mathes Royal Dane
  182. Buzzing decreasing with volume
  183. Fluro Ballast as DIY choke?
  184. 5R4GA ws 5R4WGB
  185. Vintage Webcor Reel to Reel Cap Value Replacement
  186. Coupling Capacitor question
  187. Aikido preamp: 12AU7 or 6CF7/6FQ7 ???
  188. Help needed to identify this Knight Mono Integrated Amp
  189. Winding my own OT
  190. Need a scope screenshot/photo of a Tube clipping
  191. isolating tube sockets
  192. tube cathode bias question: resistor / diode
  193. Silicon Chip mag "Currawong" amp
  194. Vibration spec of 6L6GC ?
  195. Output Transformer Question
  196. 6V6/6l6/EL34/KT66/KT77/6550/KT88 Primaries/ input/loads
  197. Question about HK Citation V schematics
  198. Multi-purpose Tube Preamp - need some help
  199. Vacuum Tube Workshop
  200. Constant Current Heater Source
  201. Tube amp channel loading
  202. Sexy Westra loudspeakers looking for a match
  203. KT90 parallel push pull design
  204. Beard P100 mk1 owners? And some questions.
  205. Hybrid OTL amplifier
  206. heater issue?
  207. negative bias supply
  208. The hardest part about a DIY tube amp is.....
  209. 6N2P-EV driving 6C33
  210. DIY THD Tube Tester / Analyzer
  211. 2.3 watt x 4 or 5 watt x2 SET amplifier using DECWARE Zkit1 and Zkit4 schematics
  212. Cathode follower topology
  213. Line level connected direct to split phase on EL34 PPP?
  214. 13E1 Stereo Single Ended Amp
  215. Apex PA94 Opamp Power Tube Driver
  216. STEM Amplifier Final Pre-Build Checkpoint
  217. thoriated tungsten triodes tetrodes pentodes
  218. BAT-VK 60 Pls help need repair ;(
  219. Switching on an old amplifier?
  220. elevated filament voltages
  221. Opinnions on Gold Lion KT77
  222. DIY Tube amplifier, Transformer question.
  223. EF42 for audio applications
  224. strange Tungsram tube
  225. Schematics TVA Mentmore M100 M200
  226. A Thordarson amp project
  227. Help: Tubes for my amp
  228. McIntosh mc40 power transformer
  229. Counterpoint SA-1 preamp schematics?
  230. What would a larger OPT get me?
  231. National VP-311C Tubescope help...
  232. 12AU7 - 12.6V DC heater wiring - noob
  233. I bought a box of tubes at an estate sale today
  234. Thermistors to prevent heater current inrush?
  235. can SE bass be as good as PP ?
  236. 2A3 cathode resistor/cap question
  237. class a output ct basic question
  238. Recent popularity of Leak TL-12
  239. bleeder resistor placement w/ power supply choke
  240. cd burner hum w tube stereo
  241. Clipping - Saturation or Mismatching Impedance?
  242. Transformer for K12g tube amp
  243. PowerTrannyHeatRemovalViaHeatSinkRadiatorPassive
  244. "Novel" push pull driver circuit
  245. Feedback lead/lag compensation
  246. help with Signature Technology mono amp
  247. 7591
  248. EL34 integrated amp power loss
  249. Use treble or bass amp for midrange?
  250. Question about a SET 2A3/45

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