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  1. Anyone traced triode curves for the 6CZ5?
  2. anthem pre-1
  3. split supply for tubes
  4. Rufus p. Turner AC-DC amp
  5. 1937 Philco Radio Amp - Build Thread
  6. Transformers for valve headphone amps
  7. Help with negative feedback
  8. Silicon Diode Measurement Confusion
  9. grommet against vibrations
  10. Help with a Moscode 300
  11. Help Identifying Valve Amplifier
  12. capacitors
  13. Questions about console parts salvaging
  14. Regarding EDCOR Transformer Data
  15. PYE mozart
  16. Tube swapping with my Condensor Mic
  17. found amp - identity unknown
  18. how to low the gain
  19. VTL TL-2 tube preamp
  20. Need Advice for Bi-amping
  21. Baldwin organ amp
  22. Octal Aikido with gain/buffer switch?
  23. Harman Kardon Stereo Tube Amp Oscillator Help!
  24. Electro-Harmonex 6973 Question
  25. Power and plate current in a SE amp
  26. 6883B for use as a audio output tube
  27. "Distortionless" Tube Oscillator -Cutting Edge Technology
  28. Feedback RH84 6v6
  29. copper wire from socket bolts to exhaust tip?
  30. What KT88 brands can handle high B+ triode connected?
  31. Williamson-style circuit with Schade feedback using pentode driver stage?
  32. potentiometer for blackface deluxe reverb
  33. GM70 tube copper vs graphite plate???
  34. +/-floating tube PSU for guitar ?! Schematic error ?
  35. About Dark Heater Tubes.
  36. Sylvania 5692 Black base tubes
  37. Tube Tester in Montreal
  38. tubelab.com's super tube SE
  39. Unsual use of triode?
  40. What the hell is Class A3 ?
  41. High voltage triodes (true triodes)
  42. Ceramic Filter Selection
  43. Eagle library for CMC teflon 9-pin tube socket?
  44. Power supply mosfet vs choke filter
  45. Capacitors used in Conrad Johnson PV7
  46. HH Scott 299A center out to subwoofer
  47. PP Amplifier Advice Sought: EL34/KT88 UL/Triode
  48. Search for StepUp 12V->142V @ 6mA
  49. Magnavox 8802 upgrade suggestions?
  50. filament supply using two bridges
  51. 6N2P-EV gain factor ??
  52. Talking tube replacements
  53. Audi Institute VR70E amp
  54. Share Fixed Bias using Diodes
  55. Finished my Tube DI/Preamp
  56. Arcturus Blue Tubes
  57. share your experience on sound of hybrid amps
  58. ideas for a simple ECL82/86 p-p amp?
  59. Tube replacements or substitution
  60. 12ax7 / 12au7
  61. Triode/Pentode Loadline Calculator
  62. Troubleshooting a Fender Champion 600
  63. High Voltage Derived Bias Supply
  64. Universal hybrid triode-mosfet input/drive stage
  65. IT coupled 1624 or 807 amp
  66. Raytheon / Western Electric JW-5755 / 420A
  67. Calculate unknown operating point from known cathode resistor
  68. 5763 triode curves
  69. HICKOK 539a QUESTION
  70. Constant current heaters
  71. max G2 voltage 1624 tube (Tabor)
  72. Need reference for Dynaco MKIV amp build
  73. Biasing Valve on Bipolar Power Supply
  74. Tubelab sse choke input 6v6
  75. $1800 tube amp
  76. Testing a 6N3 5670 etc on a B&K 600 tester
  77. Could anyone shed any light on this amp for me?
  78. Translation Russian EL84SE design please?
  79. Determining plate and screen voltage
  80. I Don't want to set the forum on fire . . .
  81. Valab Ultra Low Noise Regulatible
  82. Westinghouse 6973 Tube
  83. Which is worth burning or keeping
  84. OPT position
  85. Remove volume pot
  86. Headphone amp ideas?
  87. Good Looking 6SN7
  88. UTC Transformer
  89. Cap substitution help
  90. Edcor replacement for w5m peerless opt
  91. Audyn True copper caps.
  92. No Feedback Balanced Line Design
  93. KT120 PP - "low power" baptized Vitruvian amplifier
  94. Senior Design Project
  95. Hovland Sapphire guidance needed
  96. Question about specialized OPT
  97. My first build tubelab SE
  98. k16ls tube amp on/off switch?
  99. SY Tube Phono Improvements?
  100. Tube newbie, anyone familar with s-5 k-502? Help needed please
  101. TVA-1 Michaelson & Austin with problems
  102. New to HIFI tube need advice
  103. Crosstalk between Triodes in Dual Triode Tubes
  104. 6L6GC instead of EL34
  105. Schade feedback and CFB
  106. Sansui AU-70 - Help Needed
  107. Pentode C.F, where to connect the suppressor grid ?
  108. Separate PSU for PP EL34 / 6SN7GT integrated amp
  109. Simple SE driver with mosfet (6sn7/307A) IRF820
  110. Is it safe to run pentode w/ no screen voltage for a min?
  111. Low B+ and CCS question
  112. Has anyone ever used slate in audio?
  113. Semi-Fixed Bias?
  114. Transformers MIC and Phono
  115. Russian capacitor markings
  116. 6L6GC...More Voltage...or More Current?
  117. help me
  118. Anybody built/heard Melquiades amp
  119. Elevated grid bias
  120. Oscillation found in Luxman LX33
  121. RCA phono amp project
  122. Test of 45 Triode with EICO 625?
  123. Standard Silicon Diode Rectifier's VS Ultra Fast
  124. Output Transformer for L3 pre Audio Note
  125. "Boosted" Triode operation?
  126. 6HB6 UL push pull amp
  127. Interstage transformer ratio, spacecharge tubes in PP
  128. 6N6P line stage
  129. Revamping Tube Amp Monoblock - capacitor grounding concern
  130. 845 set bias.
  131. How to improve on a working Hybrid Amp: 832A Tube with MOSFETs
  132. tube outputs
  133. Coupling Cap Consistency
  134. Volume adjustment on 8ch at once
  135. Sub minature tube gain stage question.
  136. DHT PSE 2A3
  137. Plate voltage mic pre
  138. Estimating load for Duncan Amps PSU tool HOWTO?
  139. Shuguang Treasure Series 300B-Z not satisfactory!
  140. Choosing OP of small signal tubes with CCS in the cathode
  141. Aikido help needed
  142. Exploding 300B
  143. power output of EL34
  144. 76tube into C3M (triode) via LL1660 to PP outputstage
  145. best operating points for e182cc tube
  146. Any thoughts about this volume/bal arrangement
  147. Filament tension spring material
  148. DC coupled SE SChade amp
  149. First build 6V6 based
  150. Failed Converting UL to Pentode!?
  151. 1955 kids record player hum puzzle
  152. subwoofer output from my tube preamp
  153. EL84 SE Amp - specific transformer
  154. "GOOD" backup KT-88
  155. New or Old Output Transformer?
  156. Motorola console recap question
  157. Plate voltage on preamp tube too high
  158. Good valve design calculator website
  159. Ultra-on push-pull tetrode 6550
  160. My introduction to tube amps. The good, the bad, and the ugly.
  161. How do I calculate local feedback %?
  162. Newbie greeting & Resource
  163. Tips/Help With a Dying OTL Headphone Amp
  164. 6B4G and ECC83
  165. Maron buys a tube amp
  166. Newbie
  167. 845 AC filaments, my experience
  168. 8552 finals ?
  169. Low voltage 3W S.E. little amp, need comments and suggestions
  170. Single ended push pull ultra linear or?...
  171. Hello and questions about Magnavox SE amp
  172. Amp identification
  173. Millett DCPP No Output.
  174. using a Hammond 835 interstage ?
  175. Recommendation on versitile tube tester
  176. Mullard 6SN7GT
  177. RIAA tube pre amp
  178. Cheapo Ebay voltmeter
  179. Jolida SJ202a Schematic
  180. Tetra All in One Phono Preamp voltage
  181. Console pull advice
  182. Local feedback on IT secundary (PP amp)
  183. Computerized Curve Tracer Project
  184. Is 6w enough and can i use phone power amp?
  185. Yaqin MS-12B preamp - how to get more gain?
  186. Inductor Multiplier Patent
  187. KT90
  188. 6L6GC Hybrid Partial Feedback
  189. 7868 to 7591a conversion help
  190. SOS! 21st Century Regulator Dead!
  191. Transformer Placement - To shield or not to Shield
  192. cap multiplier suggestions wanted
  193. Bridging stereo tube amp to one more powerful mono output
  194. Weird pentode connections
  195. My last S.E. amplifier (pentode driver + Beam Power Tube Ultralinear mode)
  196. Please help info UTC transformer
  197. ARC SP-6B Tube Heaters Glow Very Bright at Startup
  198. SUPER budget DIY tube amp - need help
  199. LEAK TL/12
  200. What decides gain of a valve stage ?
  201. 6AH4 Preamp..A great option for line stage
  202. Kondo M77
  203. 2C22 SRPP
  204. Resistor question
  205. Problem with X10-d as preamp
  206. Pilot One AA-410 1950s
  207. Measuring VAC on coupling cap
  208. Tube phono stage load
  209. ANUBIS - Another Tube-Transistor Hybrid Amplifier
  210. Panasonic HV Electrolitics
  211. Unison Research Smart 845 & dripping sticky goo!
  212. Seeking Danish help to locate two 1950's magazine articles
  213. Valve cruelty ...
  214. Re- calculating RIAA network
  215. Just another cool toy to look at
  216. sherwood s-5000 vs. s-5500 iv OPt's
  217. Sound of 300B SET by Satoru Kobayashi
  218. Using UL taps instead of the anode taps to alter inpedence
  219. Help fast please! Type 3 Ei KT90's - Pre or Post War? How do you know?
  220. 807 PSE schematic design need
  221. 3 direct coupled 2A3 amps
  222. Tube preamplifier with chip power amp
  223. Anyone used IXCP10M90S ltspice model ?
  224. and the quiz identify power trans continue
  225. Valve HT power supply common-mode noise
  226. 12AX7 and 6AS5 tube amplifier
  227. Working with Eagle and single channel tube amp board.
  228. New hands-on tutorial for Tube Newbies
  229. Help me to choose tube "1 no ring" "2 has ring"
  230. Chinese board 6L6 KT88 is it worth???
  231. Valve Rectifier Testing
  232. Harman Kardon TA-120 Output Transformer
  233. Single ended transformer as pushpull?
  234. Resurrecting a nOrh SE9 Integrated Amp
  235. Fisher Amps?
  236. Repurposing an old Gulbransen Organ tube amp
  237. Help, the sound is silken or blow up?
  238. Now here's an idea - The DIYF QUAD
  239. Parallel output SE amp options
  240. What tube is equivalent 5879?
  241. Filament Xfmr: can I trade volts for amps?
  242. GU50 PP possible with this iron ?
  243. Hifi tube amps - overall sound
  244. Preamp grounding questions
  245. Tube rectifiers
  246. DIY PL84 + E180F
  247. McIntosh on How It's Made
  248. Choke input LCLC supply - question on minimum current
  249. EBC3 & CBL1 Tube AMP
  250. CLASS A HYBRID POWER AMP

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