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  1. Teeco 610d amplifier schematic
  2. Has anyone tried the Aleph CCS in a tube amp?
  3. Question on 6 pin umbilical cord for tube power supply
  4. Transformer Spacing
  5. Can this be done?
  6. Low Voltage (60V) Stereo Tube Amplifier for Dummies (2+2W)
  7. Comparing OPS.
  8. Question on PSUD2 or My Ignorance!
  9. 8BU11 pentode section driving output transformer
  10. Schematic for Cary 300SEI
  11. parallel tubes
  12. 211 grid current
  13. Issues with Mcintosh MC2000
  14. 833a spud amplifier
  15. Klipsch 6.5" Bookshelf Good for 1W SE?
  16. Pete Millett Compactron Triple triode push-pull driver PCB for 6L6GC AB2 amp
  17. Sonic Frontiers Line 3 tubes and cap recommendations
  18. Problem with my Tentlab Transport
  19. Cheap and Cheerful GE 35EH5 SE Amp That Hums
  20. Bench Power Supply Safety
  21. Comments on this preamp?
  22. VoltSecond things that make You say OUCH!
  23. 'Selectron' tubes: From where?
  24. Tony's 6C33 pp amp build progress....
  25. power transformer voltage change
  26. Getting the Urge to Play More
  27. Valve Testing - Help
  28. 10Y/VT-25
  29. GM-70 Socket
  30. Radical Reshape of Magnavox Console Amp
  31. JC Morrison
  32. Daven 3 tube amplifier
  33. ecc82/83 questions
  34. Australian AWV Valve Date Codes
  35. Increasing feedback to Tubelab simple pp
  36. Anyone need a 5U4 ?
  37. Help in identify manufacturer (chicken feet?)
  38. g1 grid stoppers
  39. Lot of tubes needs a new home.....
  40. Differential Bias
  41. British Vacuum Cleaner £ Eng Co Ltd - Goblin
  42. output cap and stepped vol advice. Cary SLP50
  43. Sony TC-500 Gives Its All
  44. Another 211 monobloc
  45. 6N1P-EV Voskhod or Anod manufactured better sounding?
  46. help with long tail pair bandwidth
  47. Anyone have both an Eico HF-81 and Akai M-8?
  48. Sylvania Engineering Sample 12ax7
  49. Diy toroid transformers for 5E3 guitar amp?
  50. Between 5AR4/GZ34, 6CH3/6CJ3 and 6D22S anode resistance
  51. One-tube simple amplifier sound experiment
  52. CK1006 ignition voltage?
  53. First build- dual mono octal linestage
  54. schematic for Baldwin 3 chan organ amp
  55. output transformer inquiry.
  56. 807 triode strapped amp - few questions
  57. HV power supply with filament bias
  58. newbie with oldie! (klemt m40 valve amp)
  59. too high voltage supply HELP
  60. 6Y6G Triode Curves
  61. A Tube buffer question from a Tube newbie
  62. Marantz 7c Question - HELP !
  63. Western Electric 555 receiver (Horn Driver)
  64. Getter heater & B+ sequencing ?
  65. Tube Amplifier with 30P1S SE
  66. Little OTL / Class " A "
  67. ATC SEMITEC DIODE, CURRENT REGULATOR
  68. seperate heater transformer advice please
  69. MQ 420-SL OTs
  70. Frequency Response of Williamson Amplifier in LTspice
  71. Edcor transformer upgrade for K12G tube amp?
  72. Transformers placement under PCB
  73. OT PP Hashimoto HW-100-5 tube amp?
  74. Winding an output transformer for headphones ? Some questions
  75. Push Pull OPT Primary Impedance
  76. Tube compliment substitution question. 6gw8 to ?
  77. Watts or Db/watt ?
  78. A question about the OPT Design Assistant software and Impedance matching
  79. XF86
  80. GM70 OTL ???
  81. Output transformer impedance matching
  82. Distortion in 1 channel
  83. HV Electrolytic Caps Question
  84. need to know operating voltage for 6f6 tube amp
  85. The 2A3 build is in dream state
  86. Alembic F2B clone hum & noise
  87. Spice Question
  88. Are large SE amps like 211/845 viable!
  89. Power transformer & heater wiring questions
  90. Parallel KT88 SET Amp
  91. Why people keep talking about using pentodes in triode mode for power amp?
  92. Mono series attenuators vs. PEC for balance control?
  93. TubeTech e813cc Pair for sale on eBay.
  94. Help with new pp kt77
  95. Is 5 Watts enough?
  96. First amp advice for a Newbie
  97. Tube/valve stuff in Tokyo
  98. Advice for a neophyte
  99. EML300B reliability
  100. User's Manual Golden Tube SEP1
  101. DIY to compete with commercial
  102. Ferrite Core vs. Laminations for 2 watt OPT
  103. generating burst waveform in OrCAD® Capture program
  104. O.T. with Litz wire
  105. Valve upgrade T.A.C. 34MK
  106. Another KT88 SE Abdellah with bias issues
  107. Lowering plate dissipation
  108. A helping hand with a diyed 5687 pre, anyone?
  109. Curtis Mathes Royal Dane
  110. Buzzing decreasing with volume
  111. Fluro Ballast as DIY choke?
  112. 5R4GA ws 5R4WGB
  113. Vintage Webcor Reel to Reel Cap Value Replacement
  114. Coupling Capacitor question
  115. Aikido preamp: 12AU7 or 6CF7/6FQ7 ???
  116. Help needed to identify this Knight Mono Integrated Amp
  117. Winding my own OT
  118. Need a scope screenshot/photo of a Tube clipping
  119. isolating tube sockets
  120. tube cathode bias question: resistor / diode
  121. Silicon Chip mag "Currawong" amp
  122. Vibration spec of 6L6GC ?
  123. Output Transformer Question
  124. 6V6/6l6/EL34/KT66/KT77/6550/KT88 Primaries/ input/loads
  125. Question about HK Citation V schematics
  126. Multi-purpose Tube Preamp - need some help
  127. Vacuum Tube Workshop
  128. Constant Current Heater Source
  129. Tube amp channel loading
  130. Sexy Westra loudspeakers looking for a match
  131. KT90 parallel push pull design
  132. Beard P100 mk1 owners? And some questions.
  133. Hybrid OTL amplifier
  134. heater issue?
  135. negative bias supply
  136. The hardest part about a DIY tube amp is.....
  137. 6N2P-EV driving 6C33
  138. DIY THD Tube Tester / Analyzer
  139. 2.3 watt x 4 or 5 watt x2 SET amplifier using DECWARE Zkit1 and Zkit4 schematics
  140. Cathode follower topology
  141. Line level connected direct to split phase on EL34 PPP?
  142. 13E1 Stereo Single Ended Amp
  143. Apex PA94 Opamp Power Tube Driver
  144. STEM Amplifier Final Pre-Build Checkpoint
  145. thoriated tungsten triodes tetrodes pentodes
  146. BAT-VK 60 Pls help need repair ;(
  147. Switching on an old amplifier?
  148. elevated filament voltages
  149. Opinnions on Gold Lion KT77
  150. DIY Tube amplifier, Transformer question.
  151. Pro reverb AA165 circuit low output from vibrato channel
  152. EF42 for audio applications
  153. strange Tungsram tube
  154. Schematics TVA Mentmore M100 M200
  155. A Thordarson amp project
  156. Help: Tubes for my amp
  157. McIntosh mc40 power transformer
  158. Counterpoint SA-1 preamp schematics?
  159. What would a larger OPT get me?
  160. National VP-311C Tubescope help...
  161. 12AU7 - 12.6V DC heater wiring - noob
  162. I bought a box of tubes at an estate sale today
  163. Thermistors to prevent heater current inrush?
  164. can SE bass be as good as PP ?
  165. 2A3 cathode resistor/cap question
  166. class a output ct basic question
  167. Recent popularity of Leak TL-12
  168. bleeder resistor placement w/ power supply choke
  169. cd burner hum w tube stereo
  170. Clipping - Saturation or Mismatching Impedance?
  171. Transformer for K12g tube amp
  172. PowerTrannyHeatRemovalViaHeatSinkRadiatorPassive
  173. "Novel" push pull driver circuit
  174. Feedback lead/lag compensation
  175. ASC Metal Polypropylene Caps
  176. help with Signature Technology mono amp
  177. 7591
  178. EL34 integrated amp power loss
  179. Use treble or bass amp for midrange?
  180. Question about a SET 2A3/45
  181. western electric 124 amplifier
  182. el34 power loss in right channel
  183. Ei Silver Plate 12AX7 cathode color ?
  184. Does parafeed really improve sound?
  185. Can I use this choke
  186. Calculating 6922/E88CC/ECC88 cathode follower for 90V anode
  187. ST70 coupling caps eyelet location on PC-3?
  188. Some help with PCL86 Headphone amp Project
  189. Top (sound) quality valve phono stage
  190. Calculating cathode follower using 12AU7 for 90V supply
  191. Cathode resistor
  192. Help with an old Capitol
  193. Cathode bypass cap
  194. balanced post-OT line output?
  195. Blown SE mono, troubleshoot
  196. What is this circuit for?
  197. Siemens EL 86 NOS?
  198. Valve Operational Amplifiers
  199. What will be the best drive to 211 tube?
  200. Dual 845 SE A2 questions
  201. Harman Kardon Citation I, II, & III (Special thanks to Jim McShane and Eli Duttman!)
  202. Heater rewiring from 6N2 to 12AX7 with 6.3VAC
  203. heater bias value
  204. the hum or is it a siliconray kit
  205. DC Automatic Bias Control - Auto fixed bias
  206. What makes an OT a good OT for audiophile and need suggestion.
  207. The totally capless DHT SET amp - 300B or others
  208. Angled Socket brackets?
  209. Octal or loctal tubes as cathode follower?
  210. Used int amp please help to figured out?
  211. Rod Coleman heat sink question
  212. Tubelab SE + Fostex fe206en vs room size! suggestions needed please!
  213. ef86 pentode/triode switch: voltage rating?
  214. Input to pre-amp
  215. EML 300B
  216. Need suggestion in building a stereo power amp
  217. VALVO EL84 and ECC83 TELEFUNKEN ID?
  218. Bogen E-75 tube amp
  219. Quad II amplifier needed for parts
  220. Low voltage 6N1P RIAA?
  221. Does anybody collect vacuum tube ADV
  222. HDMI connection causes hum on Quad 303
  223. ECC81/12AT7 "sweet spot"
  224. Phono Preamp Hum
  225. Benefits of high voltage source for preamp
  226. Auto Bias
  227. Thomas Mayer Sound Processor pics
  228. Have you used the 15A6 pentode as an audio output tube ?
  229. Can I use a 5 volts tap for 6SN7 heaters?
  230. Any opinions about this tube amp kit ?
  231. 300B odd behaviour
  232. Aikido starter help requested
  233. 10Y FILAMENT VOLTAGE MARGIN
  234. Wiring a multitap transformer. Help needed
  235. A directly heated pentode folded cascode
  236. Zener Power Supply Clamp
  237. SPICE Simulator Giving Negative Gain
  238. SE 811 amp schematic...
  239. Philco Labled 12AU7A black-plate 45' halo getter- Raytheon??
  240. My FrankenAmp
  241. Panel Meter Install
  242. New Amp With Hum...
  243. EF184-6j51p Load by CCS or Resitor
  244. Slew rate.. Something doesn't make sense to me.
  245. HK Citation V question
  246. Modifying a tube regulator
  247. 6BG6 Push Pull Parallel Amp Build
  248. adapting a FU32 Tube amp for QQE 03/20 tubes?
  249. audio innovations 500 one channel down?
  250. Questions about found Mullard xf1's

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