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  1. Dynaco ST35 testing for a blown power transformer
  2. 6n6p tube buffer
  3. Welborne Labs
  4. GU-50 triode
  5. Help track down noise in gyrator
  6. Earphone Amp Improvements
  7. Protecting Wire
  8. 45 SET : tubelab vs get*set*go vs ?
  9. 6SL7 in Maggy 175 amp...
  10. Heater soft start for series-connected preamp valves
  11. low/no gain follower
  12. Data for 6BD2A or 6BD2
  13. isolation test
  14. Western Electric 437A preamp
  15. solid-state rectrification
  16. Class AB
  17. push-pull
  18. Need help ID tango-lookalike transformers
  19. TV Valves blast from the past..
  20. Tubes suggestions for parafeed headphones amp ?
  21. CCS Loadline
  22. Universal pover supply for ECC85 EL84
  23. Conversion Project
  24. Dynaco PAS I/O PCB Grounding
  25. CCS for anode load
  26. OTL Power Supply: Halfwave vs Virtual Ground
  27. Can NOS tubes have emission staining on the glass?
  28. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  29. Capacitor Drain for Tube Bench Power Supply ?
  30. Diodes, diodes, diodes...
  31. Grid leak resistors and dc-coupling
  32. Output transformer at speaker?
  33. Newbie just wondering if this PP amp looks ok
  34. 6P36S push pull HiFi amp
  35. Another Output Transformer Wiring Question
  36. Cathode bias for EL84 PPP
  37. Output Transformer Wiring Question
  38. NJ7P Tube Database
  39. solving my old radiogram sound issues - help
  40. 6H9c Idle Current.
  41. 12E1 SE amp suggestions.
  42. Direct Coupled Output Stage, DC Bias Balance
  43. Pre-amp tube suggestions for 2A3 output tube
  44. AirTight ATM-1 Schematic
  45. Counterpoint SA 5000 Service manual and PSU
  46. Rectifier tube ? - Berman 76 preamp
  47. Cathode feedback (SE amp)
  48. Will anybody interest in stamp size ccs module?
  49. Fairchild voltage questions
  50. Help with a Sylvania 7695 Project
  51. Flicker Noise dominates triode noise in audio (AES)
  52. A tube for SE with 1k-1k5 load
  53. scott stereomaster 233 restoration
  54. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  55. What to do with C3g tubes
  56. Can anyone ID an output transformer's part number?
  57. Nestorovic NA-1 & Alpha-1 Schematics
  58. Data for 6BD2
  59. Ken Shindo R.I.P
  60. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  61. Seas Trym with SE KT88 amplifier?
  62. 845-Amp-IT-Coupled
  63. Data for 6RA3
  64. Miniwatt N3 not turning on!
  65. I need ideas on a can capacitor
  66. Help with tube for power supply...
  67. AVC vs TVC for 10y line preamp
  68. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  69. help on 845 amp
  70. High voltage power tube question
  71. Tribute OPT for PSE 300B
  72. Floating Paraphase.
  73. 6Q7G as driver in RH807
  74. Custom tubes4hifi m-125 monoblocks
  75. Antique Audio Preamlifier made in USA
  76. directly heated tube rectifiers
  77. Biasing a 12EA6 low voltage pentode
  78. Power supply doubt
  79. Vinyl Savor's Octal 6GL7 preamp?
  80. 837 tube
  81. Tone control bypass (Kontakt KT-7)
  82. drdwers
  83. Amplifier Sensitivity?
  84. identify nickel laminations
  85. Recapping Vintage EL84 amp
  86. opinion on dynaco mark VI
  87. How can i have 450 Volts ?
  88. Balanced Preamp
  89. ecc99-300b
  90. Question about the tube specs/testing?
  91. Transformer Winding Configuration, Hafler 2,815,402
  92. PSU with SS Choke for Loftin-White 2a3.
  93. HP 8903 Pete Millet's Software on Window 8 ?
  94. Cathode Destruction
  95. Earth SuperBass B-2000 bass head info needed
  96. More radio shack dissapointment
  97. What to do with transformer secondary when used as a choke?
  98. Slight transformer buzzing in Engineers Amp
  99. Couple Gyrator Questions
  100. Shishido/Loftin-White 2A3/45 Extasy..
  101. When is a tube not a Valve?
  102. Relay Recommendataion
  103. 6080 monotriod amplifier
  104. Tetra Sans PS Phono Stage Power Supply
  105. transformer test
  106. Could someone tell me more about the Mesa Boogie Strategy 400?
  107. New OTL headphone project with EC88 and 6080
  108. Philips Tube Code
  109. Edcor GXPP vs. CXPP
  110. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  111. Marshall Guitar Conversion 12AX7 Replacement
  112. affordable potted power transformer?
  113. Am I pushing the envelope too far? Layout concerns.
  114. Pete Millet's Uniamp
  115. 6211 for???
  116. Picking an output transformer: power vs. sound quality
  117. Tube emulation with transistors
  118. Altec 1570b Tube Swap
  119. Popping stepped attenuator
  120. 6922 driver/cathodyne - direct coupled
  121. Solid state rectifier with these tubes
  122. Need advice -- Improving an old tube amp
  123. KT88 SE developed a buzz
  124. Guidance on amp design
  125. OTL3 Autograph Series
  126. DAC Tube i/v help!
  127. Need help figuring out a tube amp!
  128. Parallel 12AT7 output stage design?
  129. 6SN7 SRPP
  130. Problem Bi-Amping
  131. Amplifier recommendation
  132. DIY tube amplifier got no sound but all tubes are fired up.
  133. Circuit for Melos 333
  134. DHT Tube regulated power supply
  135. Akai M8 Restoration, newbie questions
  136. Bench Power Supply - what to get?
  137. Telefunken RS241 Design Help
  138. Telefunken Hymnus 5328 MX console
  139. Some Dummy DHT Questions
  140. Inductance loading tube stage questions
  141. Simple tube kit for tube sound ?
  142. Voltage Divider with Capacitor Across Resistor to Ground
  143. FM Demodulator for Tube receivers
  144. The best amp to DIY?
  145. SE Tubelab / EL34b tubes / Transformers
  146. Heath Kit Pre Amp
  147. Preamp hiss noise
  148. Tube preamp?
  149. 417a load line
  150. 6N1 + 6P3P build, need some help.
  151. Caps connected in series in Audio Note kit 4
  152. Ground loop cure?
  153. Dynaco ST-70 Clone
  154. Op Amp Phase Splitter
  155. Idea for ECC85 or EM84?
  156. Why no sound?
  157. single ended tube amp sounds itself
  158. Proper Pentode Usage 717A (713A)
  159. Help with Mullard 5 20 project
  160. Help on Negative Feedback in KT66 PP
  161. Trying to understand 6BM8 regulator (audio note clone)
  162. 6AS7 headphone amp with Sophia Electric Mesh plate 274B rec. tube
  163. CR Kalypso Amp with output stage problem- Please help!
  164. "PEAK INPUT SIGNAL GRID-TO-GRID" question.
  165. EZ81 Load
  166. Rectifier question
  167. 6sn7-300b
  168. Balanced tube phono stage
  169. Your favorite 12B4A for a preamp ?
  170. Voltage rating for output coupling caps in 6J1 tube buffer?
  171. Single stage 845 amp
  172. Eagle tube library
  173. Using Choke in Choke Input Power Supply ?
  174. 6550 wrong high bias...
  175. Floating Bridged CCS Loaded P-P Tube Amp
  176. What to do with a problem Counterpoint SA-12
  177. 6Z9P Mu Stage max anode-cathode voltage
  178. Audio Innovations Series 500 parts
  179. Hagerman Trumpet phonostage
  180. PS design...success or failure?
  181. Kuba Serenade Stereo Console - Part III - Replacing all caps
  182. schematic of Knight KP-70 preamp or anyone having this amp?
  183. 6N6P Cathode Follower design value
  184. Radiotron 32W PP amp from RDH3
  185. Heater filament questions
  186. 46 in ultralinear mode
  187. help needed need transformer prim 230/110 sec 300v appr. 20ma +6,3v or 12,6v
  188. Output transformer confusion
  189. need amp schematic help
  190. reviving an old Randall RGT100
  191. lm317 and heater supply.
  192. BJT Voltage Bootstrap - SLCF
  193. Ideas for a cheap 200mA tube rectified PSU
  194. Need help with tube rectifier
  195. Tube or Circuit Noise?
  196. JE Labs (Angela instr.) : your favorite 2A3 schematic ?
  197. Crack the Code Amp build 1000 Watt Tube Amplifier
  198. 12E1 in fixed bias - too much current!
  199. CD-DVD player vs Notebook-usb soundcard sensitivity issue
  200. photo of Knight KP-70 preamplifier for missing component
  201. heater wear sign?
  202. Musical Fidelty X-10D Clone
  203. 815 amp
  204. Jorgen Schou 31,5 OT connection
  205. Is there such a thing....
  206. Tube Rectifiers and Common Grounds
  207. vt4c.com copper tube socket mounts
  208. 1 Ohm Tap Output tranformers?
  209. Voltage Specs For Heaters-Is 2.4V Good Enough?
  210. Aikido with 5842
  211. Luxman MQ70
  212. Valve pre-amp schematic help needed
  213. valves' world - tossie Japan
  214. 211 amp , recognize the circuit?
  215. Tube Preamp: Remedy For Digital Glare?
  216. Tubelab SSE without tube rectifier
  217. Counterpoint 7A
  218. Low Z Out Dual Triode
  219. Push Pull circuit - controlling sensitivity
  220. Moto 3 channel to Maggy 175
  221. PMillett Landfall heatsink
  222. lower the gain
  223. KT88?
  224. Sphinx Project Fourteen help wanted
  225. will this work and looking for suggestions
  226. Squeal on shutdown
  227. Newbie to SRPP and Tubes , 1 question.
  228. Question about interconnect transformers
  229. another toy - el84 PP class A
  230. Problem with biasing - no voltage drop on a cathode resistor
  231. EL84 PP current fluctuating
  232. Aikido Preamp Questions (again)
  233. Amp caused crack
  234. OPT performances
  235. Hammond 125ESE in 2A3 SE : better substitutions ?
  236. Headphone Impedance and headphone amplifier
  237. Could this tube be good for audio ?
  238. Output Transformer for SE / headphone amp
  239. pioneer sm-b200a
  240. 12AT7 Tubes ?
  241. Gold Lion kt77 bias help?
  242. Need some bias control help
  243. Lafayette LA-224a/b modernization?
  244. Need help completing vintage 6L6 amp
  245. Direct Russian equivilent for 5687, is there one ?
  246. Attenuation for 0.5dBs
  247. Dynaco ST-120 Impedance Concern Martin Logan
  248. Some 1626 Darling Amp Questions
  249. Choosing a SE 2A3 shematic : hum as a criteria...
  250. Rectifier question, voltage across diode.

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