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  1. Pre-amp tube suggestions for 2A3 output tube
  2. AirTight ATM-1 Schematic
  3. Counterpoint SA 5000 Service manual and PSU
  4. Rectifier tube ? - Berman 76 preamp
  5. Cathode feedback (SE amp)
  6. Will anybody interest in stamp size ccs module?
  7. Fairchild voltage questions
  8. Help with a Sylvania 7695 Project
  9. Flicker Noise dominates triode noise in audio (AES)
  10. A tube for SE with 1k-1k5 load
  11. scott stereomaster 233 restoration
  12. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  13. What to do with C3g tubes
  14. Can anyone ID an output transformer's part number?
  15. Nestorovic NA-1 & Alpha-1 Schematics
  16. Data for 6BD2
  17. Ken Shindo R.I.P
  18. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  19. Seas Trym with SE KT88 amplifier?
  20. 845-Amp-IT-Coupled
  21. Data for 6RA3
  22. Miniwatt N3 not turning on!
  23. I need ideas on a can capacitor
  24. Help with tube for power supply...
  25. AVC vs TVC for 10y line preamp
  26. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  27. help on 845 amp
  28. High voltage power tube question
  29. Tribute OPT for PSE 300B
  30. Floating Paraphase.
  31. 6Q7G as driver in RH807
  32. Custom tubes4hifi m-125 monoblocks
  33. Antique Audio Preamlifier made in USA
  34. directly heated tube rectifiers
  35. Biasing a 12EA6 low voltage pentode
  36. Power supply doubt
  37. Vinyl Savor's Octal 6GL7 preamp?
  38. 837 tube
  39. Tone control bypass (Kontakt KT-7)
  40. drdwers
  41. Amplifier Sensitivity?
  42. identify nickel laminations
  43. Recapping Vintage EL84 amp
  44. opinion on dynaco mark VI
  45. How can i have 450 Volts ?
  46. Balanced Preamp
  47. ecc99-300b
  48. Question about the tube specs/testing?
  49. Transformer Winding Configuration, Hafler 2,815,402
  50. PSU with SS Choke for Loftin-White 2a3.
  51. HP 8903 Pete Millet's Software on Window 8 ?
  52. Cathode Destruction
  53. Earth SuperBass B-2000 bass head info needed
  54. More radio shack dissapointment
  55. What to do with transformer secondary when used as a choke?
  56. Slight transformer buzzing in Engineers Amp
  57. Couple Gyrator Questions
  58. Shishido/Loftin-White 2A3/45 Extasy..
  59. When is a tube not a Valve?
  60. Relay Recommendataion
  61. 6080 monotriod amplifier
  62. Tetra Sans PS Phono Stage Power Supply
  63. transformer test
  64. Could someone tell me more about the Mesa Boogie Strategy 400?
  65. New OTL headphone project with EC88 and 6080
  66. Philips Tube Code
  67. Edcor GXPP vs. CXPP
  68. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  69. Marshall Guitar Conversion 12AX7 Replacement
  70. affordable potted power transformer?
  71. Am I pushing the envelope too far? Layout concerns.
  72. Pete Millet's Uniamp
  73. 6211 for???
  74. Picking an output transformer: power vs. sound quality
  75. Tube emulation with transistors
  76. Altec 1570b Tube Swap
  77. Popping stepped attenuator
  78. 6922 driver/cathodyne - direct coupled
  79. Solid state rectifier with these tubes
  80. Need advice -- Improving an old tube amp
  81. KT88 SE developed a buzz
  82. Guidance on amp design
  83. OTL3 Autograph Series
  84. DAC Tube i/v help!
  85. Need help figuring out a tube amp!
  86. Parallel 12AT7 output stage design?
  87. 6SN7 SRPP
  88. Problem Bi-Amping
  89. Amplifier recommendation
  90. DIY tube amplifier got no sound but all tubes are fired up.
  91. Circuit for Melos 333
  92. DHT Tube regulated power supply
  93. Akai M8 Restoration, newbie questions
  94. Bench Power Supply - what to get?
  95. Telefunken RS241 Design Help
  96. Telefunken Hymnus 5328 MX console
  97. Some Dummy DHT Questions
  98. Inductance loading tube stage questions
  99. Simple tube kit for tube sound ?
  100. Voltage Divider with Capacitor Across Resistor to Ground
  101. FM Demodulator for Tube receivers
  102. The best amp to DIY?
  103. SE Tubelab / EL34b tubes / Transformers
  104. Heath Kit Pre Amp
  105. Preamp hiss noise
  106. Tube preamp?
  107. 417a load line
  108. 6N1 + 6P3P build, need some help.
  109. Caps connected in series in Audio Note kit 4
  110. Ground loop cure?
  111. Dynaco ST-70 Clone
  112. Op Amp Phase Splitter
  113. Idea for ECC85 or EM84?
  114. Why no sound?
  115. single ended tube amp sounds itself
  116. Proper Pentode Usage 717A (713A)
  117. Help with Mullard 5 20 project
  118. Help on Negative Feedback in KT66 PP
  119. Trying to understand 6BM8 regulator (audio note clone)
  120. 6AS7 headphone amp with Sophia Electric Mesh plate 274B rec. tube
  121. CR Kalypso Amp with output stage problem- Please help!
  122. "PEAK INPUT SIGNAL GRID-TO-GRID" question.
  123. EZ81 Load
  124. Rectifier question
  125. 6sn7-300b
  126. Balanced tube phono stage
  127. Your favorite 12B4A for a preamp ?
  128. Voltage rating for output coupling caps in 6J1 tube buffer?
  129. Single stage 845 amp
  130. Eagle tube library
  131. Using Choke in Choke Input Power Supply ?
  132. 6550 wrong high bias...
  133. Floating Bridged CCS Loaded P-P Tube Amp
  134. What to do with a problem Counterpoint SA-12
  135. 6Z9P Mu Stage max anode-cathode voltage
  136. Audio Innovations Series 500 parts
  137. Hagerman Trumpet phonostage
  138. PS design...success or failure?
  139. Kuba Serenade Stereo Console - Part III - Replacing all caps
  140. schematic of Knight KP-70 preamp or anyone having this amp?
  141. 6N6P Cathode Follower design value
  142. Radiotron 32W PP amp from RDH3
  143. Heater filament questions
  144. 46 in ultralinear mode
  145. help needed need transformer prim 230/110 sec 300v appr. 20ma +6,3v or 12,6v
  146. Output transformer confusion
  147. need amp schematic help
  148. reviving an old Randall RGT100
  149. lm317 and heater supply.
  150. BJT Voltage Bootstrap - SLCF
  151. Ideas for a cheap 200mA tube rectified PSU
  152. Need help with tube rectifier
  153. Tube or Circuit Noise?
  154. JE Labs (Angela instr.) : your favorite 2A3 schematic ?
  155. Crack the Code Amp build 1000 Watt Tube Amplifier
  156. 12E1 in fixed bias - too much current!
  157. CD-DVD player vs Notebook-usb soundcard sensitivity issue
  158. photo of Knight KP-70 preamplifier for missing component
  159. heater wear sign?
  160. Musical Fidelty X-10D Clone
  161. 815 amp
  162. Jorgen Schou 31,5 OT connection
  163. Is there such a thing....
  164. Tube Rectifiers and Common Grounds
  165. vt4c.com copper tube socket mounts
  166. 1 Ohm Tap Output tranformers?
  167. Voltage Specs For Heaters-Is 2.4V Good Enough?
  168. Aikido with 5842
  169. Luxman MQ70
  170. Valve pre-amp schematic help needed
  171. valves' world - tossie Japan
  172. 211 amp , recognize the circuit?
  173. Tube Preamp: Remedy For Digital Glare?
  174. Tubelab SSE without tube rectifier
  175. Counterpoint 7A
  176. Low Z Out Dual Triode
  177. Push Pull circuit - controlling sensitivity
  178. Moto 3 channel to Maggy 175
  179. PMillett Landfall heatsink
  180. lower the gain
  181. KT88?
  182. Sphinx Project Fourteen help wanted
  183. will this work and looking for suggestions
  184. Squeal on shutdown
  185. Newbie to SRPP and Tubes , 1 question.
  186. Question about interconnect transformers
  187. another toy - el84 PP class A
  188. Problem with biasing - no voltage drop on a cathode resistor
  189. EL84 PP current fluctuating
  190. Aikido Preamp Questions (again)
  191. Amp caused crack
  192. OPT performances
  193. Hammond 125ESE in 2A3 SE : better substitutions ?
  194. Headphone Impedance and headphone amplifier
  195. Could this tube be good for audio ?
  196. Output Transformer for SE / headphone amp
  197. pioneer sm-b200a
  198. 12AT7 Tubes ?
  199. Gold Lion kt77 bias help?
  200. Need some bias control help
  201. Lafayette LA-224a/b modernization?
  202. Need help completing vintage 6L6 amp
  203. Direct Russian equivilent for 5687, is there one ?
  204. Attenuation for 0.5dBs
  205. Dynaco ST-120 Impedance Concern Martin Logan
  206. Some 1626 Darling Amp Questions
  207. Choosing a SE 2A3 shematic : hum as a criteria...
  208. Rectifier question, voltage across diode.
  209. Angela simple 2A3
  210. Cathode follower - resistor calculations/software
  211. Desperately Seeking OPT Covers
  212. Modified Tube Cricket Amp Questions
  213. Best sounding DIY amp kits for 45, 2A3 or 300B
  214. Pentode's screen voltage/current
  215. KT88 Cathode Current Runaway/Oscillations?
  216. O'netics, Electra Print: anyone have both?
  217. How to maximize power transfer in tube circuit designs, damping is not the question!
  218. Inexpensive 2.5k primary SET OPT with 90mA+ DC bias rating?
  219. 4p1L Ultralinear
  220. RH300B 12W with 1% THD
  221. This is where the adventure begins
  222. 12AU7 pre rebuild suggestions
  223. Subwoofer Channel on Tube Amp
  224. Changing input tube from 12ax7 to 6AU6A on OTL project
  225. Yaqin MC5881a
  226. Humming Sound from tube amp
  227. Level Five 2A3 SE schematic : opinions ?
  228. My screwup = free PCBs...
  229. New stuff on the website: A2 buffer, isolated current sensor
  230. 12.6vDC Heaters, looking for a shortcut
  231. Fisher 80-AZ bias milliamps?
  232. Can shed some light on this EL 34 schematic diagram
  233. Solid State Rectifier in Dynaco Tube Amp
  234. Big chassis designs!
  235. 12ax7 LP
  236. plitron output w/ cfb usage ideas
  237. 390 ohm should have been 390k ohm
  238. Advice sought re what tube power amp
  239. EL34 SED Winged C Black Prints: original??
  240. OPTx from Ogonowski
  241. Aikido cathode follower (ACF) with 12au7
  242. Ampeg vt60 tri ax (did it really exist?)
  243. SEP EL-34 to 6L6GC?
  244. Volume Pot Spec
  245. My Tube Pre-Amp Picking up an AM radio station?
  246. Philips 6SN7 GTA & GTB
  247. ST-120 Problem With Rectifier Tube
  248. New Yaqin VK-2100
  249. Electronic parts and sub-zero temperature
  250. Bendix 6384 as EL34: Experience anyone?

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