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  1. Little Bear P8 Amp Questions.
  2. 6k6 gt rca radiotron tube ?????
  3. The Guiguang 300B have good bass ?
  4. Ampex 300 Input Transformer
  5. Recap Heathkit A-7 amplifier.
  6. Testing KT-120
  7. 27GB5/PL504 The Same?
  8. Running Eico ST70 at 90 volts.
  9. TU-8200 with speakers 94db
  10. Magic behind Mentor
  11. dn2540 noise
  12. Rectifier PIV derated for altitude ?
  13. CLC psu for headamp?
  14. Teeco 610d amplifier schematic
  15. Has anyone tried the Aleph CCS in a tube amp?
  16. Question on 6 pin umbilical cord for tube power supply
  17. Transformer Spacing
  18. Can this be done?
  19. Low Voltage (60V) Stereo Tube Amplifier for Dummies (2+2W)
  20. Comparing OPS.
  21. Question on PSUD2 or My Ignorance!
  22. 8BU11 pentode section driving output transformer
  23. Schematic for Cary 300SEI
  24. parallel tubes
  25. 211 grid current
  26. Issues with Mcintosh MC2000
  27. 833a spud amplifier
  28. Klipsch 6.5" Bookshelf Good for 1W SE?
  29. Pete Millett Compactron Triple triode push-pull driver PCB for 6L6GC AB2 amp
  30. Sonic Frontiers Line 3 tubes and cap recommendations
  31. Problem with my Tentlab Transport
  32. Cheap and Cheerful GE 35EH5 SE Amp That Hums
  33. Bench Power Supply Safety
  34. Comments on this preamp?
  35. VoltSecond things that make You say OUCH!
  36. 'Selectron' tubes: From where?
  37. Tony's 6C33 pp amp build progress....
  38. power transformer voltage change
  39. Getting the Urge to Play More
  40. Valve Testing - Help
  41. 10Y/VT-25
  42. GM-70 Socket
  43. Radical Reshape of Magnavox Console Amp
  44. JC Morrison
  45. Daven 3 tube amplifier
  46. ecc82/83 questions
  47. Australian AWV Valve Date Codes
  48. Increasing feedback to Tubelab simple pp
  49. Anyone need a 5U4 ?
  50. Help in identify manufacturer (chicken feet?)
  51. g1 grid stoppers
  52. Lot of tubes needs a new home.....
  53. Differential Bias
  54. British Vacuum Cleaner £ Eng Co Ltd - Goblin
  55. output cap and stepped vol advice. Cary SLP50
  56. Sony TC-500 Gives Its All
  57. Another 211 monobloc
  58. 6N1P-EV Voskhod or Anod manufactured better sounding?
  59. help with long tail pair bandwidth
  60. Anyone have both an Eico HF-81 and Akai M-8?
  61. Sylvania Engineering Sample 12ax7
  62. Between 5AR4/GZ34, 6CH3/6CJ3 and 6D22S anode resistance
  63. One-tube simple amplifier sound experiment
  64. CK1006 ignition voltage?
  65. First build- dual mono octal linestage
  66. schematic for Baldwin 3 chan organ amp
  67. output transformer inquiry.
  68. 807 triode strapped amp - few questions
  69. HV power supply with filament bias
  70. newbie with oldie! (klemt m40 valve amp)
  71. too high voltage supply HELP
  72. 6Y6G Triode Curves
  73. A Tube buffer question from a Tube newbie
  74. Marantz 7c Question - HELP !
  75. Western Electric 555 receiver (Horn Driver)
  76. Getter heater & B+ sequencing ?
  77. Tube Amplifier with 30P1S SE
  78. Little OTL / Class " A "
  79. ATC SEMITEC DIODE, CURRENT REGULATOR
  80. seperate heater transformer advice please
  81. MQ 420-SL OTs
  82. Frequency Response of Williamson Amplifier in LTspice
  83. Edcor transformer upgrade for K12G tube amp?
  84. Transformers placement under PCB
  85. OT PP Hashimoto HW-100-5 tube amp?
  86. Winding an output transformer for headphones ? Some questions
  87. Push Pull OPT Primary Impedance
  88. Tube compliment substitution question. 6gw8 to ?
  89. Watts or Db/watt ?
  90. A question about the OPT Design Assistant software and Impedance matching
  91. XF86
  92. GM70 OTL ???
  93. Output transformer impedance matching
  94. Distortion in 1 channel
  95. need to know operating voltage for 6f6 tube amp
  96. The 2A3 build is in dream state
  97. Alembic F2B clone hum & noise
  98. Spice Question
  99. Are large SE amps like 211/845 viable!
  100. Power transformer & heater wiring questions
  101. Parallel KT88 SET Amp
  102. Why people keep talking about using pentodes in triode mode for power amp?
  103. Mono series attenuators vs. PEC for balance control?
  104. TubeTech e813cc Pair for sale on eBay.
  105. Help with new pp kt77
  106. Is 5 Watts enough?
  107. First amp advice for a Newbie
  108. Tube/valve stuff in Tokyo
  109. Advice for a neophyte
  110. EML300B reliability
  111. User's Manual Golden Tube SEP1
  112. DIY to compete with commercial
  113. Ferrite Core vs. Laminations for 2 watt OPT
  114. generating burst waveform in OrCAD® Capture program
  115. O.T. with Litz wire
  116. Valve upgrade T.A.C. 34MK
  117. Another KT88 SE Abdellah with bias issues
  118. Lowering plate dissipation
  119. A helping hand with a diyed 5687 pre, anyone?
  120. Curtis Mathes Royal Dane
  121. Buzzing decreasing with volume
  122. Fluro Ballast as DIY choke?
  123. 5R4GA ws 5R4WGB
  124. Vintage Webcor Reel to Reel Cap Value Replacement
  125. Coupling Capacitor question
  126. Aikido preamp: 12AU7 or 6CF7/6FQ7 ???
  127. Help needed to identify this Knight Mono Integrated Amp
  128. Winding my own OT
  129. Need a scope screenshot/photo of a Tube clipping
  130. isolating tube sockets
  131. tube cathode bias question: resistor / diode
  132. Silicon Chip mag "Currawong" amp
  133. Vibration spec of 6L6GC ?
  134. Output Transformer Question
  135. 6V6/6l6/EL34/KT66/KT77/6550/KT88 Primaries/ input/loads
  136. Question about HK Citation V schematics
  137. Multi-purpose Tube Preamp - need some help
  138. Vacuum Tube Workshop
  139. Constant Current Heater Source
  140. Tube amp channel loading
  141. Sexy Westra loudspeakers looking for a match
  142. KT90 parallel push pull design
  143. Beard P100 mk1 owners? And some questions.
  144. Hybrid OTL amplifier
  145. heater issue?
  146. negative bias supply
  147. The hardest part about a DIY tube amp is.....
  148. 6N2P-EV driving 6C33
  149. DIY THD Tube Tester / Analyzer
  150. 2.3 watt x 4 or 5 watt x2 SET amplifier using DECWARE Zkit1 and Zkit4 schematics
  151. Cathode follower topology
  152. Line level connected direct to split phase on EL34 PPP?
  153. 13E1 Stereo Single Ended Amp
  154. Apex PA94 Opamp Power Tube Driver
  155. STEM Amplifier Final Pre-Build Checkpoint
  156. thoriated tungsten triodes tetrodes pentodes
  157. BAT-VK 60 Pls help need repair ;(
  158. Switching on an old amplifier?
  159. elevated filament voltages
  160. Opinnions on Gold Lion KT77
  161. DIY Tube amplifier, Transformer question.
  162. EF42 for audio applications
  163. strange Tungsram tube
  164. Schematics TVA Mentmore M100 M200
  165. A Thordarson amp project
  166. Help: Tubes for my amp
  167. McIntosh mc40 power transformer
  168. Counterpoint SA-1 preamp schematics?
  169. What would a larger OPT get me?
  170. National VP-311C Tubescope help...
  171. 12AU7 - 12.6V DC heater wiring - noob
  172. I bought a box of tubes at an estate sale today
  173. Thermistors to prevent heater current inrush?
  174. can SE bass be as good as PP ?
  175. 2A3 cathode resistor/cap question
  176. class a output ct basic question
  177. Recent popularity of Leak TL-12
  178. bleeder resistor placement w/ power supply choke
  179. cd burner hum w tube stereo
  180. Clipping - Saturation or Mismatching Impedance?
  181. Transformer for K12g tube amp
  182. PowerTrannyHeatRemovalViaHeatSinkRadiatorPassive
  183. "Novel" push pull driver circuit
  184. Feedback lead/lag compensation
  185. help with Signature Technology mono amp
  186. 7591
  187. EL34 integrated amp power loss
  188. Use treble or bass amp for midrange?
  189. Question about a SET 2A3/45
  190. western electric 124 amplifier
  191. el34 power loss in right channel
  192. Ei Silver Plate 12AX7 cathode color ?
  193. Does parafeed really improve sound?
  194. Can I use this choke
  195. Calculating 6922/E88CC/ECC88 cathode follower for 90V anode
  196. ST70 coupling caps eyelet location on PC-3?
  197. Some help with PCL86 Headphone amp Project
  198. Top (sound) quality valve phono stage
  199. Calculating cathode follower using 12AU7 for 90V supply
  200. Cathode resistor
  201. Help with an old Capitol
  202. Cathode bypass cap
  203. balanced post-OT line output?
  204. Blown SE mono, troubleshoot
  205. What is this circuit for?
  206. Siemens EL 86 NOS?
  207. Valve Operational Amplifiers
  208. What will be the best drive to 211 tube?
  209. Dual 845 SE A2 questions
  210. Harman Kardon Citation I, II, & III (Special thanks to Jim McShane and Eli Duttman!)
  211. Heater rewiring from 6N2 to 12AX7 with 6.3VAC
  212. heater bias value
  213. the hum or is it a siliconray kit
  214. DC Automatic Bias Control - Auto fixed bias
  215. What makes an OT a good OT for audiophile and need suggestion.
  216. The totally capless DHT SET amp - 300B or others
  217. Angled Socket brackets?
  218. Octal or loctal tubes as cathode follower?
  219. Used int amp please help to figured out?
  220. Rod Coleman heat sink question
  221. Tubelab SE + Fostex fe206en vs room size! suggestions needed please!
  222. ef86 pentode/triode switch: voltage rating?
  223. Input to pre-amp
  224. EML 300B
  225. Need suggestion in building a stereo power amp
  226. VALVO EL84 and ECC83 TELEFUNKEN ID?
  227. Bogen E-75 tube amp
  228. Quad II amplifier needed for parts
  229. Low voltage 6N1P RIAA?
  230. Does anybody collect vacuum tube ADV
  231. HDMI connection causes hum on Quad 303
  232. ECC81/12AT7 "sweet spot"
  233. Phono Preamp Hum
  234. Benefits of high voltage source for preamp
  235. Auto Bias
  236. Thomas Mayer Sound Processor pics
  237. Have you used the 15A6 pentode as an audio output tube ?
  238. Can I use a 5 volts tap for 6SN7 heaters?
  239. Any opinions about this tube amp kit ?
  240. 300B odd behaviour
  241. Aikido starter help requested
  242. 10Y FILAMENT VOLTAGE MARGIN
  243. Wiring a multitap transformer. Help needed
  244. A directly heated pentode folded cascode
  245. Zener Power Supply Clamp
  246. SPICE Simulator Giving Negative Gain
  247. SE 811 amp schematic...
  248. Philco Labled 12AU7A black-plate 45' halo getter- Raytheon??
  249. My FrankenAmp
  250. Panel Meter Install

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