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  1. tube power supply
  2. Anyone read Russian?
  3. PSU - dropping resistors?
  4. pre-amp design, just curious about your thoughts here.
  5. Using isolation transformer as a PSU transformer???
  6. KT66 loosing its getter
  7. Mullard schematic?
  8. Mikale Abdellah SE KT88 B+ voltage?
  9. Layout software
  10. Does anyone have any schematics for a parafeed SET amp?
  11. music angel kt88
  12. CB radio
  13. The end of the 300b Dream?
  14. Voltage divider to reduce 6v dc to 2vdc
  15. oil injected rca cables?
  16. Modification.....
  17. CHOKY'S EC8010 preamp
  18. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  19. tube checker
  20. 300B tube going dead after a few months
  21. KT88 se build NO GAIN please help
  22. mengyue mini valve amplifier
  23. Preamp suggest, please.
  24. Problem: Severe power transformer and choke vibration
  25. Amp Hack schematic questions
  26. This circuit ok?
  27. Tube ID anyone?
  28. Posted new books and data
  29. The sound of a failing tube rectifier?
  30. Proyect with PL36 and N2P (Russian ECC83)
  31. 300b LTspice model with grid current?
  32. Tri-amp using 2a3 SETs
  33. TentLabs Directly Heated Tubes Supply
  34. Bevois Valley Design Question
  35. Kofi Annan in: "Oscillation Blues"
  36. Common mode choke model
  37. UTC 20 Watt Amp - Any Experience?
  38. 6cz5s for EL84s
  39. The 120Hz Blues...
  40. Amplitrex AT-1000 Tube Tester
  41. audio amp. versus guitar amp
  42. Grounding points....
  43. Cap values for CLC filter
  44. Tube glows red hot, blows fuse
  45. Independent Bias Adjust for Each Tube?
  46. Mesa Boogie Maverick schematic any1?
  47. KT-88 from a book
  48. Modelling PSU?!
  49. DD amp for ESLs...
  50. Today's tube manufacters, best is?
  51. Advice on hum in phono stage
  52. Cathode follower & SRPP q
  53. FREDs on PSU
  54. Hybrid Shenanigans
  55. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  56. 5AR4 heaters
  57. Bad Grounding,or Cheap Pot??
  58. Tube Construction Handbook
  59. WE 350: dry bass?
  60. What size capacitor I use for a 2A3 or 300B cathode bypass?
  61. Need helps with building poweramp stage
  62. Noah's Ark for electron tubes
  63. Fixed Bias suggestions
  64. OD3/OA3 voltage regulation design
  65. DHT filament heating with SMPS + CCS
  66. Using SE transformers in a PP circuit
  67. EDCOR Releases Line of Guitar OPT's
  68. Schematic: Audio Innovations, The first audio amplifier
  69. Restoring 1948 Gibson GA-30 guitar amp(tube)
  70. Now THIS is tube DIY to the extreme
  71. Dynaco mkIII A431 op's
  72. Alternative to Power Transformer
  73. Help with e180f and ixys current reg
  74. Building a "Hiwatt" tube Bass Amp
  75. help! no power, im lost
  76. Jerrycan amp (RH34SE)
  77. 12B4 Updates
  78. www.diykits.com.hk stepped volume control ... any good?
  79. Hammond L-100 conversion
  80. Anyone have the ASL model MGSI15 schematic ?
  81. Replacement for single-winding OPT?
  82. Buzz in new amp...
  83. 48V B+ linestage
  84. Line-Stage Opinion Question
  85. Audio applications of sweep tubes and ratings
  86. Differences in structure between parafeed ad gapped OPTs
  87. Take a look and let me know what you think
  88. Printed circuit board designing?
  89. SimpleSE - Switches, Wire, IEC, Jacks
  90. KT90 why this ?
  91. Break in
  92. Choke Design - Basic Questions
  93. Is this a good interstage transformer?
  94. Best tubes for bass?
  95. Tube amps & MP3's
  96. TRIO 15Hz Oscilloscope CS-1560A
  97. Newbie Needs Help Choosing A Kit
  98. I need a negative supply rail--but how?
  99. Strange Hum
  100. VR Tubes
  101. Understanding plate loads
  102. How do you know if your preamp has inverted the phase?
  103. Bogen J130 PA to guitar amp?
  104. 6P1 Equivalent
  105. EL34 and KT88??? 6550?
  106. one stage DHT amp
  107. 6V6 Output?
  108. Lineup of four: Help me choose?! OPT for SE
  109. 6DJ8 / 6922 tube?
  110. bias pilot sa 260
  111. Using vintage OPTs as PSU chokes ?
  112. crystal palace driver stage by morgan jones
  113. Why Are 12A*7 Tubes So Bad?
  114. Mikael's KT-88 question
  115. OPT for PSE 6c33c tubes
  116. 24v aikido distortion
  117. ED8000 SE or Parafeed?
  118. GZ33 Rectifier drop?
  119. counterpoint sa11
  120. High voltage problem
  121. Wire gauges
  122. Simple headphones out
  123. Mull(ard)ing over valve choice...
  124. Turning on B+ without heaters with aikido
  125. New Project - Plitron 4006
  126. Where in Brisbane can I get a transformer for my Chinese amp
  127. Etching or silkscreening chassis?
  128. can please someone explain this to me?
  129. A VCCS tube amp, how?
  130. How to add a subwoofer out?
  131. Kind of cool check it out
  132. new opt for s5 k16ls?
  133. Wanted Arkay SP6, Knight 83YX768 schematics
  134. toggle switch for input selector
  135. Tube Rectifier protection
  136. Quick Q on Max G2/Screen Volts..
  137. Cathodyne follower? :)
  138. Real music power
  139. Tube info needed
  140. Petrol Head Amp
  141. Help Needed- Replacement Volume Pot For a Fisher KX100
  142. What are these caps good for?
  143. 300B Set amp some variations
  144. my second design circuit(hifhgain guitar amp)
  145. why p-p amp RL for class B is 1/2 the class A load?
  146. Is this circuit ok?
  147. JTM60 capacitor question
  148. Attenuators ------ Please Help
  149. Transformer Coupled Pentode Question
  150. no response needed 903@klipschorns
  151. KT88: EH vs. Winged C
  152. Voltage swing on a guitar pick-up?
  153. Anyone have experience with the China made tube amps
  154. tubelab SE 300b power transformer
  155. Toroidal transformer potting can
  156. 300B - Push Pull or PSE to drive a commercial speaker
  157. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  158. Choke Input Filter.
  159. Preamp comparisons
  160. Amperite delay relays
  161. Help with making a tube amp?
  162. Linestage suggestion for Kuei Yang Wang's phonostage
  163. Altec Lansing 440B preamplifier
  164. Modding a Bogen CHB100...
  165. Report: One-Electron PRC as input choke
  166. Phase Splitter Name
  167. 6ck4 sweetspot
  168. Mystery Ebay amp purchase
  169. Triode versus Pentode
  170. Supply, Full wave, choke on center tap?
  171. Ping SY
  172. Interstage Transformer Loading
  173. Tube Amplifier Kit?
  174. Easy inexpensive tube buffer ideas?
  175. Running tubes at their maximum dissipation.
  176. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  177. DHT drivers - shootout
  178. Dynaco MK IV
  179. Fender Bassman- AB165 capacitor toss up
  180. KT88 , Genalex or Chinese ? Help !!!
  181. output tubes for stereo 70
  182. 6H6P for Sonic Frontiers Line 2?
  183. Too much distortion
  184. Servo assisted CF LCR-filter
  185. 6v 5AR4?
  186. 845 Grid stopper value
  187. Chokes, sizing and ringing?
  188. Long tail 6sl7 for Dynaco stereo 70?
  189. Triode Fabrication Video
  190. Funny Hi-Fi quote
  191. 300B PP ph.split
  192. extend tube sockets, or tube "plugs"?
  193. Klipsch Promedia GMX A-2.1 + Decware Taboo
  194. So any ideas for a car type amp?
  195. Cathode Biasing a 6L6 quartet power stage
  196. Calling All Mullard 5-20 Aficionados
  197. Modelling a DC filament supply in PSU Designer II
  198. Guitar Preamp Tube combination
  199. 12AX7 Preamp NOOB Question
  200. Adding aux input on a tube console
  201. one safety question
  202. E1148,CV6-How do you distinguish the anode/grid caps?
  203. dual value motor run caps
  204. Strange DC choke behavior
  205. Subwoofer out question.
  206. Tube 6N3 use pre for ChipAmp
  207. Hammond 1650W
  208. separating PSU for preamp
  209. sca-35
  210. A 6.3V regulator delivering 2.8A...?
  211. 6K:8 25W SE OPT, now what tube should I use?
  212. EL84 fixed bias PP Triode
  213. Tube Amp Kit Suggestions
  214. TT21 Vs KT88
  215. One-Electron PRC chokes as PS input choke?
  216. Magnavox 135BB
  217. Is there much point in tube preamps? (This isn't a troll)
  218. How does one determine saturation point of triode or pentode
  219. Help - 807 Technical problem
  220. woooohooo!!! 3 working el84 SEs
  221. westinghouse model 80 radio - eval for parts?
  222. Bogen J130 PA schematic
  223. Marshall JMP-1 high voltage value ??
  224. Better Cap = Better Sound?
  225. Pilot SA 260 bias
  226. 12AX7 gain stage output impedance
  227. Small 1W hifi amp
  228. Tube Radio - What are G & F Terminals?
  229. Has anyone seen this?
  230. how would you Parallel a 12ua7 tube
  231. Tube mod a HT rcvr?
  232. how would i series a 12au7a
  233. does some have distortion schematics for 12au7a
  234. triode strapped tetrode
  235. 6F6G UL Amplifier
  236. Build a VT100?
  237. turrets for tube PC driver board needed
  238. Mikael Abdellah's kt88, (LOADLINES)
  239. piezo amp discussion on loudspeaker forum
  240. Balanced interconnect to differential amp - how would you do it?
  241. Ebay Tube Preamp Kit
  242. Kiwame resistors
  243. Mains isolation - would this work?
  244. 6CA7 Mikael Abdellah's KT88 SE amp?
  245. Tube heaters AC or DC?
  246. Question about system design with the K-12
  247. CCS on SE 2A3 cathode
  248. Saucepan Amplifier
  249. Rectifier query
  250. Fisher 400c

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