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  1. diodes before plate load
  2. power tubes..newbie question.
  3. Need Help 12BH7 Tube test.
  4. Tube Virgin
  5. Chassis layout help
  6. Maybe this is why 300b's dont last as long
  7. High-voltage bench power supply
  8. Ebay Tube amp buy disaster
  9. HK cheap SE OTPs...hmmm
  10. Modded ST70 Done
  11. bad buzz in an EL34 amp
  12. Another radio->Gtr amp mod question
  13. yaoin
  14. What is the safest method to plot characteristic curves without ruining the tubes
  15. Screen grid zeners; which?
  16. Another one I don't get
  17. 6BG6GA adapter instructions needed
  18. got an EC8020
  19. Identifying these Valvos.
  20. Converting tube guitar amp to Hi-Fi amp
  21. 21kW audio power amp?
  22. Quicksilver conversion
  23. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  24. Hammond Transformers in Montreal/Canada
  25. Can't find data for 8624
  26. Any advice on modifying a 2A3 SET amp to parafeed?
  27. Output impedance for non published PP configuration
  28. Grid stopper resistor required (KT66)?
  29. Ask Jan First OPTs
  30. For what are high mu triodes still useful?
  31. CCa "low noise"?
  32. Upgrading my Audio Research VT 130 SE Tube amp
  33. 100ma FSD voltmeter
  34. Conqueror schematic
  35. Ground reference
  36. Overdriven Capacitor?
  37. Tone Controls?
  38. My first "from scratch" design, SE KT88..........
  39. OPTs of questionable utility
  40. 6336 as a Rectifier
  41. tube power supply
  42. Anyone read Russian?
  43. PSU - dropping resistors?
  44. pre-amp design, just curious about your thoughts here.
  45. Using isolation transformer as a PSU transformer???
  46. KT66 loosing its getter
  47. Mullard schematic?
  48. Mikale Abdellah SE KT88 B+ voltage?
  49. Layout software
  50. Does anyone have any schematics for a parafeed SET amp?
  51. music angel kt88
  52. CB radio
  53. The end of the 300b Dream?
  54. Voltage divider to reduce 6v dc to 2vdc
  55. oil injected rca cables?
  56. Modification.....
  57. CHOKY'S EC8010 preamp
  58. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  59. tube checker
  60. 300B tube going dead after a few months
  61. KT88 se build NO GAIN please help
  62. mengyue mini valve amplifier
  63. Preamp suggest, please.
  64. Problem: Severe power transformer and choke vibration
  65. Amp Hack schematic questions
  66. This circuit ok?
  67. Tube ID anyone?
  68. Posted new books and data
  69. The sound of a failing tube rectifier?
  70. Proyect with PL36 and N2P (Russian ECC83)
  71. 300b LTspice model with grid current?
  72. Tri-amp using 2a3 SETs
  73. TentLabs Directly Heated Tubes Supply
  74. Bevois Valley Design Question
  75. Kofi Annan in: "Oscillation Blues"
  76. Common mode choke model
  77. UTC 20 Watt Amp - Any Experience?
  78. 6cz5s for EL84s
  79. The 120Hz Blues...
  80. Amplitrex AT-1000 Tube Tester
  81. Grounding points....
  82. Cap values for CLC filter
  83. Tube glows red hot, blows fuse
  84. Independent Bias Adjust for Each Tube?
  85. KT-88 from a book
  86. Modelling PSU?!
  87. DD amp for ESLs...
  88. Today's tube manufacters, best is?
  89. Advice on hum in phono stage
  90. Cathode follower & SRPP q
  91. FREDs on PSU
  92. Hybrid Shenanigans
  93. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  94. 5AR4 heaters
  95. Bad Grounding,or Cheap Pot??
  96. Tube Construction Handbook
  97. WE 350: dry bass?
  98. What size capacitor I use for a 2A3 or 300B cathode bypass?
  99. Need helps with building poweramp stage
  100. Noah's Ark for electron tubes
  101. Fixed Bias suggestions
  102. OD3/OA3 voltage regulation design
  103. DHT filament heating with SMPS + CCS
  104. Using SE transformers in a PP circuit
  105. Schematic: Audio Innovations, The first audio amplifier
  106. Now THIS is tube DIY to the extreme
  107. Dynaco mkIII A431 op's
  108. Alternative to Power Transformer
  109. Help with e180f and ixys current reg
  110. help! no power, im lost
  111. Jerrycan amp (RH34SE)
  112. 12B4 Updates
  113. www.diykits.com.hk stepped volume control ... any good?
  114. Hammond L-100 conversion
  115. Anyone have the ASL model MGSI15 schematic ?
  116. Replacement for single-winding OPT?
  117. Buzz in new amp...
  118. 48V B+ linestage
  119. Line-Stage Opinion Question
  120. Audio applications of sweep tubes and ratings
  121. Differences in structure between parafeed ad gapped OPTs
  122. Take a look and let me know what you think
  123. Printed circuit board designing?
  124. SimpleSE - Switches, Wire, IEC, Jacks
  125. KT90 why this ?
  126. Break in
  127. Choke Design - Basic Questions
  128. Is this a good interstage transformer?
  129. Best tubes for bass?
  130. Tube amps & MP3's
  131. TRIO 15Hz Oscilloscope CS-1560A
  132. Newbie Needs Help Choosing A Kit
  133. I need a negative supply rail--but how?
  134. Strange Hum
  135. VR Tubes
  136. Understanding plate loads
  137. How do you know if your preamp has inverted the phase?
  138. 6P1 Equivalent
  139. EL34 and KT88??? 6550?
  140. one stage DHT amp
  141. 6V6 Output?
  142. Lineup of four: Help me choose?! OPT for SE
  143. 6DJ8 / 6922 tube?
  144. bias pilot sa 260
  145. Using vintage OPTs as PSU chokes ?
  146. crystal palace driver stage by morgan jones
  147. Why Are 12A*7 Tubes So Bad?
  148. Mikael's KT-88 question
  149. OPT for PSE 6c33c tubes
  150. 24v aikido distortion
  151. ED8000 SE or Parafeed?
  152. GZ33 Rectifier drop?
  153. counterpoint sa11
  154. High voltage problem
  155. Wire gauges
  156. Simple headphones out
  157. Mull(ard)ing over valve choice...
  158. Turning on B+ without heaters with aikido
  159. New Project - Plitron 4006
  160. Where in Brisbane can I get a transformer for my Chinese amp
  161. Etching or silkscreening chassis?
  162. can please someone explain this to me?
  163. A VCCS tube amp, how?
  164. How to add a subwoofer out?
  165. Kind of cool check it out
  166. new opt for s5 k16ls?
  167. Wanted Arkay SP6, Knight 83YX768 schematics
  168. toggle switch for input selector
  169. Tube Rectifier protection
  170. Quick Q on Max G2/Screen Volts..
  171. Cathodyne follower? :)
  172. Real music power
  173. Tube info needed
  174. Petrol Head Amp
  175. Help Needed- Replacement Volume Pot For a Fisher KX100
  176. What are these caps good for?
  177. 300B Set amp some variations
  178. why p-p amp RL for class B is 1/2 the class A load?
  179. Is this circuit ok?
  180. Attenuators ------ Please Help
  181. Transformer Coupled Pentode Question
  182. no response needed 903@klipschorns
  183. KT88: EH vs. Winged C
  184. Anyone have experience with the China made tube amps
  185. tubelab SE 300b power transformer
  186. Toroidal transformer potting can
  187. 300B - Push Pull or PSE to drive a commercial speaker
  188. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  189. Choke Input Filter.
  190. Preamp comparisons
  191. Amperite delay relays
  192. Help with making a tube amp?
  193. Linestage suggestion for Kuei Yang Wang's phonostage
  194. Altec Lansing 440B preamplifier
  195. Modding a Bogen CHB100...
  196. Report: One-Electron PRC as input choke
  197. Phase Splitter Name
  198. 6ck4 sweetspot
  199. Mystery Ebay amp purchase
  200. Triode versus Pentode
  201. Supply, Full wave, choke on center tap?
  202. Ping SY
  203. Interstage Transformer Loading
  204. Tube Amplifier Kit?
  205. Easy inexpensive tube buffer ideas?
  206. Running tubes at their maximum dissipation.
  207. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  208. DHT drivers - shootout
  209. Dynaco MK IV
  210. KT88 , Genalex or Chinese ? Help !!!
  211. output tubes for stereo 70
  212. 6H6P for Sonic Frontiers Line 2?
  213. Too much distortion
  214. Servo assisted CF LCR-filter
  215. 6v 5AR4?
  216. 845 Grid stopper value
  217. Chokes, sizing and ringing?
  218. Long tail 6sl7 for Dynaco stereo 70?
  219. Triode Fabrication Video
  220. Funny Hi-Fi quote
  221. 300B PP ph.split
  222. extend tube sockets, or tube "plugs"?
  223. Klipsch Promedia GMX A-2.1 + Decware Taboo
  224. So any ideas for a car type amp?
  225. Cathode Biasing a 6L6 quartet power stage
  226. Calling All Mullard 5-20 Aficionados
  227. Modelling a DC filament supply in PSU Designer II
  228. 12AX7 Preamp NOOB Question
  229. Adding aux input on a tube console
  230. one safety question
  231. E1148,CV6-How do you distinguish the anode/grid caps?
  232. dual value motor run caps
  233. Strange DC choke behavior
  234. Subwoofer out question.
  235. Tube 6N3 use pre for ChipAmp
  236. Hammond 1650W
  237. separating PSU for preamp
  238. sca-35
  239. A 6.3V regulator delivering 2.8A...?
  240. 6K:8 25W SE OPT, now what tube should I use?
  241. EL84 fixed bias PP Triode
  242. Tube Amp Kit Suggestions
  243. TT21 Vs KT88
  244. One-Electron PRC chokes as PS input choke?
  245. Magnavox 135BB
  246. Is there much point in tube preamps? (This isn't a troll)
  247. How does one determine saturation point of triode or pentode
  248. Help - 807 Technical problem
  249. woooohooo!!! 3 working el84 SEs
  250. westinghouse model 80 radio - eval for parts?

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