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  1. copper wire from socket bolts to exhaust tip?
  2. What KT88 brands can handle high B+ triode connected?
  3. Williamson-style circuit with Schade feedback using pentode driver stage?
  4. potentiometer for blackface deluxe reverb
  5. GM70 tube copper vs graphite plate???
  6. +/-floating tube PSU for guitar ?! Schematic error ?
  7. About Dark Heater Tubes.
  8. Sylvania 5692 Black base tubes
  9. Tube Tester in Montreal
  10. tubelab.com's super tube SE
  11. Unsual use of triode?
  12. What the hell is Class A3 ?
  13. High voltage triodes (true triodes)
  14. Ceramic Filter Selection
  15. Eagle library for CMC teflon 9-pin tube socket?
  16. Power supply mosfet vs choke filter
  17. Capacitors used in Conrad Johnson PV7
  18. HH Scott 299A center out to subwoofer
  19. PP Amplifier Advice Sought: EL34/KT88 UL/Triode
  20. Search for StepUp 12V->142V @ 6mA
  21. Magnavox 8802 upgrade suggestions?
  22. filament supply using two bridges
  23. 6N2P-EV gain factor ??
  24. Talking tube replacements
  25. Audi Institute VR70E amp
  26. Share Fixed Bias using Diodes
  27. Finished my Tube DI/Preamp
  28. Arcturus Blue Tubes
  29. share your experience on sound of hybrid amps
  30. ideas for a simple ECL82/86 p-p amp?
  31. Tube replacements or substitution
  32. 12ax7 / 12au7
  33. Triode Loadline Calculator
  34. Troubleshooting a Fender Champion 600
  35. High Voltage Derived Bias Supply
  36. Universal hybrid triode-mosfet input/drive stage
  37. IT coupled 1624 or 807 amp
  38. Raytheon / Western Electric JW-5755 / 420A
  39. Calculate unknown operating point from known cathode resistor
  40. 5763 triode curves
  41. HICKOK 539a QUESTION
  42. Constant current heaters
  43. max G2 voltage 1624 tube (Tabor)
  44. Need reference for Dynaco MKIV amp build
  45. Biasing Valve on Bipolar Power Supply
  46. Tubelab sse choke input 6v6
  47. $1800 tube amp
  48. Testing a 6N3 5670 etc on a B&K 600 tester
  49. Could anyone shed any light on this amp for me?
  50. Translation Russian EL84SE design please?
  51. Determining plate and screen voltage
  52. I Don't want to set the forum on fire . . .
  53. Valab Ultra Low Noise Regulatible
  54. Westinghouse 6973 Tube
  55. Which is worth burning or keeping
  56. OPT position
  57. Remove volume pot
  58. Headphone amp ideas?
  59. Good Looking 6SN7
  60. UTC Transformer
  61. Cap substitution help
  62. Edcor replacement for w5m peerless opt
  63. Audyn True copper caps.
  64. No Feedback Balanced Line Design
  65. KT120 PP - "low power" baptized Vitruvian amplifier
  66. Senior Design Project
  67. Hovland Sapphire guidance needed
  68. Question about specialized OPT
  69. My first build tubelab SE
  70. k16ls tube amp on/off switch?
  71. SY Tube Phono Improvements?
  72. Tube newbie, anyone familar with s-5 k-502? Help needed please
  73. TVA-1 Michaelson & Austin with problems
  74. New to HIFI tube need advice
  75. Crosstalk between Triodes in Dual Triode Tubes
  76. 6L6GC instead of EL34
  77. Schade feedback and CFB
  78. Sansui AU-70 - Help Needed
  79. Pentode C.F, where to connect the suppressor grid ?
  80. Separate PSU for PP EL34 / 6SN7GT integrated amp
  81. Simple SE driver with mosfet (6sn7/307A) IRF820
  82. Is it safe to run pentode w/ no screen voltage for a min?
  83. Low B+ and CCS question
  84. Has anyone ever used slate in audio?
  85. Semi-Fixed Bias?
  86. Transformers MIC and Phono
  87. Russian capacitor markings
  88. 6L6GC...More Voltage...or More Current?
  89. help me
  90. Anybody built/heard Melquiades amp
  91. Elevated grid bias
  92. Oscillation found in Luxman LX33
  93. RCA phono amp project
  94. Test of 45 Triode with EICO 625?
  95. Standard Silicon Diode Rectifier's VS Ultra Fast
  96. Output Transformer for L3 pre Audio Note
  97. "Boosted" Triode operation?
  98. 6HB6 UL push pull amp
  99. Interstage transformer ratio, spacecharge tubes in PP
  100. 6N6P line stage
  101. Revamping Tube Amp Monoblock - capacitor grounding concern
  102. 845 set bias.
  103. How to improve on a working Hybrid Amp: 832A Tube with MOSFETs
  104. tube outputs
  105. Coupling Cap Consistency
  106. Volume adjustment on 8ch at once
  107. Sub minature tube gain stage question.
  108. DHT PSE 2A3
  109. Plate voltage mic pre
  110. Estimating load for Duncan Amps PSU tool HOWTO?
  111. Shuguang Treasure Series 300B-Z not satisfactory!
  112. Choosing OP of small signal tubes with CCS in the cathode
  113. Aikido help needed
  114. Exploding 300B
  115. power output of EL34
  116. 76tube into C3M (triode) via LL1660 to PP outputstage
  117. best operating points for e182cc tube
  118. Any thoughts about this volume/bal arrangement
  119. Filament tension spring material
  120. DC coupled SE SChade amp
  121. First build 6V6 based
  122. Failed Converting UL to Pentode!?
  123. 1955 kids record player hum puzzle
  124. subwoofer output from my tube preamp
  125. EL84 SE Amp - specific transformer
  126. "GOOD" backup KT-88
  127. New or Old Output Transformer?
  128. Motorola console recap question
  129. Plate voltage on preamp tube too high
  130. Good valve design calculator website
  131. Ultra-on push-pull tetrode 6550
  132. My introduction to tube amps. The good, the bad, and the ugly.
  133. How do I calculate local feedback %?
  134. Newbie greeting & Resource
  135. Tips/Help With a Dying OTL Headphone Amp
  136. 6B4G and ECC83
  137. Maron buys a tube amp
  138. Newbie
  139. 845 AC filaments, my experience
  140. 8552 finals ?
  141. Low voltage 3W S.E. little amp, need comments and suggestions
  142. Single ended push pull ultra linear or?...
  143. Hello and questions about Magnavox SE amp
  144. Amp identification
  145. Millett DCPP No Output.
  146. using a Hammond 835 interstage ?
  147. Recommendation on versitile tube tester
  148. Mullard 6SN7GT
  149. RIAA tube pre amp
  150. Cheapo Ebay voltmeter
  151. Jolida SJ202a Schematic
  152. Tetra All in One Phono Preamp voltage
  153. Console pull advice
  154. Local feedback on IT secundary (PP amp)
  155. Computerized Curve Tracer Project
  156. Is 6w enough and can i use phone power amp?
  157. Yaqin MS-12B preamp - how to get more gain?
  158. Inductor Multiplier Patent
  159. KT90
  160. 6L6GC Hybrid Partial Feedback
  161. 7868 to 7591a conversion help
  162. SOS! 21st Century Regulator Dead!
  163. Transformer Placement - To shield or not to Shield
  164. cap multiplier suggestions wanted
  165. Bridging stereo tube amp to one more powerful mono output
  166. Weird pentode connections
  167. My last S.E. amplifier (pentode driver + Beam Power Tube Ultralinear mode)
  168. Please help info UTC transformer
  169. ARC SP-6B Tube Heaters Glow Very Bright at Startup
  170. SUPER budget DIY tube amp - need help
  171. LEAK TL/12
  172. What decides gain of a valve stage ?
  173. 6AH4 Preamp..A great option for line stage
  174. Kondo M77
  175. 2C22 SRPP
  176. Resistor question
  177. Problem with X10-d as preamp
  178. Pilot One AA-410 1950s
  179. Measuring VAC on coupling cap
  180. Tube phono stage load
  181. ANUBIS - Another Tube-Transistor Hybrid Amplifier
  182. Panasonic HV Electrolitics
  183. Unison Research Smart 845 & dripping sticky goo!
  184. Seeking Danish help to locate two 1950's magazine articles
  185. Valve cruelty ...
  186. Re- calculating RIAA network
  187. Just another cool toy to look at
  188. sherwood s-5000 vs. s-5500 iv OPt's
  189. Sound of 300B SET by Satoru Kobayashi
  190. Using UL taps instead of the anode taps to alter inpedence
  191. Help fast please! Type 3 Ei KT90's - Pre or Post War? How do you know?
  192. 807 PSE schematic design need
  193. 3 direct coupled 2A3 amps
  194. Tube preamplifier with chip power amp
  195. Anyone used IXCP10M90S ltspice model ?
  196. and the quiz identify power trans continue
  197. Valve HT power supply common-mode noise
  198. 12AX7 and 6AS5 tube amplifier
  199. Working with Eagle and single channel tube amp board.
  200. New hands-on tutorial for Tube Newbies
  201. Help me to choose tube "1 no ring" "2 has ring"
  202. Chinese board 6L6 KT88 is it worth???
  203. Valve Rectifier Testing
  204. Harman Kardon TA-120 Output Transformer
  205. Single ended transformer as pushpull?
  206. Resurrecting a nOrh SE9 Integrated Amp
  207. Fisher Amps?
  208. Repurposing an old Gulbransen Organ tube amp
  209. Help, the sound is silken or blow up?
  210. Now here's an idea - The DIYF QUAD
  211. Parallel output SE amp options
  212. What tube is equivalent 5879?
  213. Filament Xfmr: can I trade volts for amps?
  214. GU50 PP possible with this iron ?
  215. Hifi tube amps - overall sound
  216. Preamp grounding questions
  217. Tube rectifiers
  218. DIY PL84 + E180F
  219. McIntosh on How It's Made
  220. Choke input LCLC supply - question on minimum current
  221. EBC3 & CBL1 Tube AMP
  222. CLASS A HYBRID POWER AMP
  223. MXL V69 Mogami Edition signal cuts in/out
  224. Ultra-linear plate characteristic curve for EL34
  225. Need help to modify circuit to suit replacement power XFMR
  226. Line preamp schematic for 5GH8A wanted.
  227. help please - modify phono corrector
  228. Help me: Brimar 5Z4G, 5Y3GT is this an equivalent to a 5Y3WGTA?
  229. A Russian glow tube regulator with specs of 75V 60mA ?
  230. Help with filament for ecc88
  231. How much power transformer is necessary?
  232. testing the 300b tube
  233. Headphone amplifier outputs, so many permutations!
  234. tube footprint in Eagle
  235. Need VTVM repairs
  236. First Timer - DIY Tube Amp
  237. Help identify OT please
  238. gEDA and tubes
  239. Triode Electronics Issues?
  240. RCA BC5B consolette manual?
  241. Help with converting EL37 amp to KT66
  242. treadmill choke
  243. Preamp OPT
  244. Probleme with Volume Pot
  245. Simple SE 6L6 2 watt Homebrew
  246. is 6J32P equivalent of EF806 ?
  247. new tubes vs old ones
  248. 6p36s tube torture.
  249. Questions re: Bypass of B+ to differential amp
  250. Tube choice for yaqin cd3 buffer

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