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  1. Eagle library for CMC teflon 9-pin tube socket?
  2. Power supply mosfet vs choke filter
  3. Capacitors used in Conrad Johnson PV7
  4. HH Scott 299A center out to subwoofer
  5. PP Amplifier Advice Sought: EL34/KT88 UL/Triode
  6. Search for StepUp 12V->142V @ 6mA
  7. Magnavox 8802 upgrade suggestions?
  8. filament supply using two bridges
  9. 6N2P-EV gain factor ??
  10. Talking tube replacements
  11. Audi Institute VR70E amp
  12. Share Fixed Bias using Diodes
  13. Finished my Tube DI/Preamp
  14. Arcturus Blue Tubes
  15. share your experience on sound of hybrid amps
  16. ideas for a simple ECL82/86 p-p amp?
  17. Tube replacements or substitution
  18. 12ax7 / 12au7
  19. Triode/Pentode Loadline Calculator
  20. High Voltage Derived Bias Supply
  21. Universal hybrid triode-mosfet input/drive stage
  22. IT coupled 1624 or 807 amp
  23. Raytheon / Western Electric JW-5755 / 420A
  24. Calculate unknown operating point from known cathode resistor
  25. 5763 triode curves
  26. HICKOK 539a QUESTION
  27. Constant current heaters
  28. max G2 voltage 1624 tube (Tabor)
  29. Need reference for Dynaco MKIV amp build
  30. Biasing Valve on Bipolar Power Supply
  31. Tubelab sse choke input 6v6
  32. $1800 tube amp
  33. Testing a 6N3 5670 etc on a B&K 600 tester
  34. Could anyone shed any light on this amp for me?
  35. Translation Russian EL84SE design please?
  36. Determining plate and screen voltage
  37. I Don't want to set the forum on fire . . .
  38. Valab Ultra Low Noise Regulatible
  39. Westinghouse 6973 Tube
  40. Which is worth burning or keeping
  41. OPT position
  42. Remove volume pot
  43. Headphone amp ideas?
  44. Good Looking 6SN7
  45. UTC Transformer
  46. Cap substitution help
  47. Edcor replacement for w5m peerless opt
  48. Audyn True copper caps.
  49. No Feedback Balanced Line Design
  50. KT120 PP - "low power" baptized Vitruvian amplifier
  51. Senior Design Project
  52. Hovland Sapphire guidance needed
  53. Question about specialized OPT
  54. My first build tubelab SE
  55. k16ls tube amp on/off switch?
  56. SY Tube Phono Improvements?
  57. Tube newbie, anyone familar with s-5 k-502? Help needed please
  58. TVA-1 Michaelson & Austin with problems
  59. New to HIFI tube need advice
  60. Crosstalk between Triodes in Dual Triode Tubes
  61. 6L6GC instead of EL34
  62. Schade feedback and CFB
  63. Sansui AU-70 - Help Needed
  64. Pentode C.F, where to connect the suppressor grid ?
  65. Separate PSU for PP EL34 / 6SN7GT integrated amp
  66. Simple SE driver with mosfet (6sn7/307A) IRF820
  67. Is it safe to run pentode w/ no screen voltage for a min?
  68. Low B+ and CCS question
  69. Has anyone ever used slate in audio?
  70. Semi-Fixed Bias?
  71. Transformers MIC and Phono
  72. Russian capacitor markings
  73. 6L6GC...More Voltage...or More Current?
  74. help me
  75. Anybody built/heard Melquiades amp
  76. Elevated grid bias
  77. Oscillation found in Luxman LX33
  78. RCA phono amp project
  79. Test of 45 Triode with EICO 625?
  80. Standard Silicon Diode Rectifier's VS Ultra Fast
  81. Output Transformer for L3 pre Audio Note
  82. "Boosted" Triode operation?
  83. 6HB6 UL push pull amp
  84. Interstage transformer ratio, spacecharge tubes in PP
  85. 6N6P line stage
  86. Revamping Tube Amp Monoblock - capacitor grounding concern
  87. 845 set bias.
  88. How to improve on a working Hybrid Amp: 832A Tube with MOSFETs
  89. tube outputs
  90. Coupling Cap Consistency
  91. Volume adjustment on 8ch at once
  92. Sub minature tube gain stage question.
  93. DHT PSE 2A3
  94. Plate voltage mic pre
  95. Estimating load for Duncan Amps PSU tool HOWTO?
  96. Shuguang Treasure Series 300B-Z not satisfactory!
  97. Choosing OP of small signal tubes with CCS in the cathode
  98. Aikido help needed
  99. Exploding 300B
  100. power output of EL34
  101. 76 tube into C3M (triode) via LL1660 to PP output stage
  102. best operating points for e182cc tube
  103. Any thoughts about this volume/bal arrangement
  104. Filament tension spring material
  105. DC coupled SE Schade amp
  106. First build 6V6 based
  107. Failed Converting UL to Pentode!?
  108. 1955 kids record player hum puzzle
  109. subwoofer output from my tube preamp
  110. EL84 SE Amp - specific transformer
  111. "GOOD" backup KT-88
  112. New or Old Output Transformer?
  113. Motorola console recap question
  114. Plate voltage on preamp tube too high
  115. Good valve design calculator website
  116. Ultra-on push-pull tetrode 6550
  117. My introduction to tube amps. The good, the bad, and the ugly.
  118. How do I calculate local feedback %?
  119. Newbie greeting & Resource
  120. Tips/Help With a Dying OTL Headphone Amp
  121. 6B4G and ECC83
  122. Maron buys a tube amp
  123. Newbie
  124. 845 AC filaments, my experience
  125. 8552 finals ?
  126. Low voltage 3W S.E. little amp, need comments and suggestions
  127. Single ended push pull ultra linear or?...
  128. Hello and questions about Magnavox SE amp
  129. Amp identification
  130. Millett DCPP No Output.
  131. using a Hammond 835 interstage ?
  132. Recommendation on versitile tube tester
  133. Mullard 6SN7GT
  134. RIAA tube pre amp
  135. Cheapo Ebay voltmeter
  136. Jolida SJ202a Schematic
  137. Tetra All in One Phono Preamp voltage
  138. Console pull advice
  139. Local feedback on IT secondary (PP amp)
  140. Computerized Curve Tracer Project
  141. Is 6w enough and can i use phone power amp?
  142. Yaqin MS-12B preamp - how to get more gain?
  143. Inductor Multiplier Patent
  144. KT90
  145. 6L6GC Hybrid Partial Feedback
  146. 7868 to 7591a conversion help
  147. SOS! 21st Century Regulator Dead!
  148. Transformer Placement - To shield or not to Shield
  149. cap multiplier suggestions wanted
  150. Bridging stereo tube amp to one more powerful mono output
  151. Weird pentode connections
  152. My last S.E. amplifier (pentode driver + Beam Power Tube Ultralinear mode)
  153. Please help info UTC transformer
  154. ARC SP-6B Tube Heaters Glow Very Bright at Startup
  155. SUPER budget DIY tube amp - need help
  156. LEAK TL/12
  157. What decides gain of a valve stage ?
  158. 6AH4 Preamp..A great option for line stage
  159. Kondo M77
  160. 2C22 SRPP
  161. Resistor question
  162. Problem with X10-d as preamp
  163. Pilot One AA-410 1950s
  164. Measuring VAC on coupling cap
  165. Tube phono stage load
  166. ANUBIS - Another Tube-Transistor Hybrid Amplifier
  167. Panasonic HV Electrolitics
  168. Unison Research Smart 845 & dripping sticky goo!
  169. Seeking Danish help to locate two 1950's magazine articles
  170. Valve cruelty ...
  171. Re- calculating RIAA network
  172. Just another cool toy to look at
  173. sherwood s-5000 vs. s-5500 iv OPt's
  174. Sound of 300B SET by Satoru Kobayashi
  175. Using UL taps instead of the anode taps to alter inpedence
  176. Help fast please! Type 3 Ei KT90's - Pre or Post War? How do you know?
  177. 807 PSE schematic design need
  178. 3 direct coupled 2A3 amps
  179. Tube preamplifier with chip power amp
  180. Anyone used IXCP10M90S ltspice model ?
  181. and the quiz identify power trans continue
  182. Valve HT power supply common-mode noise
  183. 12AX7 and 6AS5 tube amplifier
  184. Working with Eagle and single channel tube amp board.
  185. New hands-on tutorial for Tube Newbies
  186. Help me to choose tube "1 no ring" "2 has ring"
  187. Chinese board 6L6 KT88 is it worth???
  188. Valve Rectifier Testing
  189. Harman Kardon TA-120 Output Transformer
  190. Single ended transformer as pushpull?
  191. Resurrecting a nOrh SE9 Integrated Amp
  192. Fisher Amps?
  193. Repurposing an old Gulbransen Organ tube amp
  194. Help, the sound is silken or blow up?
  195. Now here's an idea - The DIYF QUAD
  196. Parallel output SE amp options
  197. What tube is equivalent 5879?
  198. Filament Xfmr: can I trade volts for amps?
  199. GU50 PP possible with this iron ?
  200. Hifi tube amps - overall sound
  201. Preamp grounding questions
  202. Tube rectifiers
  203. DIY PL84 + E180F
  204. McIntosh on How It's Made
  205. Choke input LCLC supply - question on minimum current
  206. EBC3 & CBL1 Tube AMP
  207. CLASS A HYBRID POWER AMP
  208. MXL V69 Mogami Edition signal cuts in/out
  209. Ultra-linear plate characteristic curve for EL34
  210. Need help to modify circuit to suit replacement power XFMR
  211. Line preamp schematic for 5GH8A wanted.
  212. help please - modify phono corrector
  213. Help me: Brimar 5Z4G, 5Y3GT is this an equivalent to a 5Y3WGTA?
  214. A Russian glow tube regulator with specs of 75V 60mA ?
  215. Help with filament for ecc88
  216. How much power transformer is necessary?
  217. testing the 300b tube
  218. Headphone amplifier outputs, so many permutations!
  219. tube footprint in Eagle
  220. Need VTVM repairs
  221. First Timer - DIY Tube Amp
  222. Help identify OT please
  223. gEDA and tubes
  224. Triode Electronics Issues?
  225. RCA BC5B consolette manual?
  226. Help with converting EL37 amp to KT66
  227. treadmill choke
  228. Preamp OPT
  229. Probleme with Volume Pot
  230. Simple SE 6L6 2 watt Homebrew
  231. is 6J32P equivalent of EF806 ?
  232. new tubes vs old ones
  233. 6p36s tube torture.
  234. Questions re: Bypass of B+ to differential amp
  235. Tube choice for yaqin cd3 buffer
  236. yesterday and today
  237. 260VDC need how much VAC transformer, is it 184VAC?
  238. preamp static
  239. Tube Line or Phono Stage bare kit
  240. Grounding of Hammond transformers
  241. Spud Amplifier with 6E5P Tube
  242. RAT Tube Tester build
  243. need a little help with identification
  244. aikido 12vac help needed
  245. Mullard 3-3 PCB
  246. OTL Using OPT
  247. VA/CF 6SN7 preamp input points?
  248. Copper losses in output transformers
  249. Yaqin MC550 Anyone?
  250. Bigger value output coupling

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