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  1. Using isolation transformer as a PSU transformer???
  2. KT66 loosing its getter
  3. Mullard schematic?
  4. Mikale Abdellah SE KT88 B+ voltage?
  5. Layout software
  6. Does anyone have any schematics for a parafeed SET amp?
  7. music angel kt88
  8. CB radio
  9. The end of the 300b Dream?
  10. Voltage divider to reduce 6v dc to 2vdc
  11. oil injected rca cables?
  12. Modification.....
  13. CHOKY'S EC8010 preamp
  14. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  15. tube checker
  16. 300B tube going dead after a few months
  17. KT88 se build NO GAIN please help
  18. mengyue mini valve amplifier
  19. Preamp suggest, please.
  20. Problem: Severe power transformer and choke vibration
  21. Amp Hack schematic questions
  22. This circuit ok?
  23. Tube ID anyone?
  24. Posted new books and data
  25. The sound of a failing tube rectifier?
  26. Proyect with PL36 and N2P (Russian ECC83)
  27. 300b LTspice model with grid current?
  28. Tri-amp using 2a3 SETs
  29. TentLabs Directly Heated Tubes Supply
  30. Bevois Valley Design Question
  31. Kofi Annan in: "Oscillation Blues"
  32. Common mode choke model
  33. UTC 20 Watt Amp - Any Experience?
  34. 6cz5s for EL84s
  35. The 120Hz Blues...
  36. Amplitrex AT-1000 Tube Tester
  37. Grounding points....
  38. Cap values for CLC filter
  39. Tube glows red hot, blows fuse
  40. Independent Bias Adjust for Each Tube?
  41. KT-88 from a book
  42. Modelling PSU?!
  43. DD amp for ESLs...
  44. Today's tube manufacters, best is?
  45. Advice on hum in phono stage
  46. Cathode follower & SRPP q
  47. FREDs on PSU
  48. Hybrid Shenanigans
  49. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  50. 5AR4 heaters
  51. Bad Grounding,or Cheap Pot??
  52. Tube Construction Handbook
  53. WE 350: dry bass?
  54. What size capacitor I use for a 2A3 or 300B cathode bypass?
  55. Need helps with building poweramp stage
  56. Noah's Ark for electron tubes
  57. Fixed Bias suggestions
  58. OD3/OA3 voltage regulation design
  59. DHT filament heating with SMPS + CCS
  60. Using SE transformers in a PP circuit
  61. Schematic: Audio Innovations, The first audio amplifier
  62. Now THIS is tube DIY to the extreme
  63. Dynaco mkIII A431 op's
  64. Alternative to Power Transformer
  65. Help with e180f and ixys current reg
  66. help! no power, im lost
  67. Jerrycan amp (RH34SE)
  68. 12B4 Updates
  69. www.diykits.com.hk stepped volume control ... any good?
  70. Hammond L-100 conversion
  71. Anyone have the ASL model MGSI15 schematic ?
  72. Replacement for single-winding OPT?
  73. Buzz in new amp...
  74. 48V B+ linestage
  75. Line-Stage Opinion Question
  76. Audio applications of sweep tubes and ratings
  77. Differences in structure between parafeed ad gapped OPTs
  78. Take a look and let me know what you think
  79. Printed circuit board designing?
  80. SimpleSE - Switches, Wire, IEC, Jacks
  81. KT90 why this ?
  82. Break in
  83. Choke Design - Basic Questions
  84. Is this a good interstage transformer?
  85. Best tubes for bass?
  86. Tube amps & MP3's
  87. TRIO 15Hz Oscilloscope CS-1560A
  88. Newbie Needs Help Choosing A Kit
  89. I need a negative supply rail--but how?
  90. Strange Hum
  91. VR Tubes
  92. Understanding plate loads
  93. How do you know if your preamp has inverted the phase?
  94. 6P1 Equivalent
  95. EL34 and KT88??? 6550?
  96. one stage DHT amp
  97. 6V6 Output?
  98. Lineup of four: Help me choose?! OPT for SE
  99. 6DJ8 / 6922 tube?
  100. bias pilot sa 260
  101. Using vintage OPTs as PSU chokes ?
  102. crystal palace driver stage by morgan jones
  103. Why Are 12A*7 Tubes So Bad?
  104. Mikael's KT-88 question
  105. OPT for PSE 6c33c tubes
  106. 24v aikido distortion
  107. ED8000 SE or Parafeed?
  108. GZ33 Rectifier drop?
  109. counterpoint sa11
  110. High voltage problem
  111. Wire gauges
  112. Simple headphones out
  113. Mull(ard)ing over valve choice...
  114. Turning on B+ without heaters with aikido
  115. New Project - Plitron 4006
  116. Where in Brisbane can I get a transformer for my Chinese amp
  117. Etching or silkscreening chassis?
  118. can please someone explain this to me?
  119. A VCCS tube amp, how?
  120. How to add a subwoofer out?
  121. Kind of cool check it out
  122. new opt for s5 k16ls?
  123. Wanted Arkay SP6, Knight 83YX768 schematics
  124. toggle switch for input selector
  125. Tube Rectifier protection
  126. Quick Q on Max G2/Screen Volts..
  127. Cathodyne follower? :)
  128. Real music power
  129. Tube info needed
  130. Petrol Head Amp
  131. Help Needed- Replacement Volume Pot For a Fisher KX100
  132. What are these caps good for?
  133. 300B Set amp some variations
  134. why p-p amp RL for class B is 1/2 the class A load?
  135. Is this circuit ok?
  136. Attenuators ------ Please Help
  137. Transformer Coupled Pentode Question
  138. no response needed 903@klipschorns
  139. KT88: EH vs. Winged C
  140. Anyone have experience with the China made tube amps
  141. tubelab SE 300b power transformer
  142. Toroidal transformer potting can
  143. 300B - Push Pull or PSE to drive a commercial speaker
  144. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  145. Choke Input Filter.
  146. Preamp comparisons
  147. Amperite delay relays
  148. Help with making a tube amp?
  149. Linestage suggestion for Kuei Yang Wang's phonostage
  150. Altec Lansing 440B preamplifier
  151. Modding a Bogen CHB100...
  152. Report: One-Electron PRC as input choke
  153. Phase Splitter Name
  154. 6ck4 sweetspot
  155. Mystery Ebay amp purchase
  156. Triode versus Pentode
  157. Supply, Full wave, choke on center tap?
  158. Ping SY
  159. Interstage Transformer Loading
  160. Tube Amplifier Kit?
  161. Easy inexpensive tube buffer ideas?
  162. Running tubes at their maximum dissipation.
  163. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  164. DHT drivers - shootout
  165. Dynaco MK IV
  166. KT88 , Genalex or Chinese ? Help !!!
  167. output tubes for stereo 70
  168. 6H6P for Sonic Frontiers Line 2?
  169. Too much distortion
  170. Servo assisted CF LCR-filter
  171. 6v 5AR4?
  172. 845 Grid stopper value
  173. Chokes, sizing and ringing?
  174. Long tail 6sl7 for Dynaco stereo 70?
  175. Triode Fabrication Video
  176. Funny Hi-Fi quote
  177. 300B PP ph.split
  178. extend tube sockets, or tube "plugs"?
  179. Klipsch Promedia GMX A-2.1 + Decware Taboo
  180. So any ideas for a car type amp?
  181. Cathode Biasing a 6L6 quartet power stage
  182. Calling All Mullard 5-20 Aficionados
  183. Modelling a DC filament supply in PSU Designer II
  184. 12AX7 Preamp NOOB Question
  185. Adding aux input on a tube console
  186. one safety question
  187. E1148,CV6-How do you distinguish the anode/grid caps?
  188. Strange DC choke behavior
  189. Subwoofer out question.
  190. Tube 6N3 use pre for ChipAmp
  191. Hammond 1650W
  192. separating PSU for preamp
  193. sca-35
  194. A 6.3V regulator delivering 2.8A...?
  195. 6K:8 25W SE OPT, now what tube should I use?
  196. EL84 fixed bias PP Triode
  197. Tube Amp Kit Suggestions
  198. TT21 Vs KT88
  199. One-Electron PRC chokes as PS input choke?
  200. Magnavox 135BB
  201. Is there much point in tube preamps? (This isn't a troll)
  202. How does one determine saturation point of triode or pentode
  203. Help - 807 Technical problem
  204. woooohooo!!! 3 working el84 SEs
  205. westinghouse model 80 radio - eval for parts?
  206. Bogen J130 PA schematic
  207. Better Cap = Better Sound?
  208. Pilot SA 260 bias
  209. 12AX7 gain stage output impedance
  210. Small 1W hifi amp
  211. Tube Radio - What are G & F Terminals?
  212. Has anyone seen this?
  213. how would you Parallel a 12ua7 tube
  214. Tube mod a HT rcvr?
  215. how would i series a 12au7a
  216. does some have distortion schematics for 12au7a
  217. triode strapped tetrode
  218. 6F6G UL Amplifier
  219. Build a VT100?
  220. turrets for tube PC driver board needed
  221. Mikael Abdellah's kt88, (LOADLINES)
  222. piezo amp discussion on loudspeaker forum
  223. Balanced interconnect to differential amp - how would you do it?
  224. Ebay Tube Preamp Kit
  225. Kiwame resistors
  226. Mains isolation - would this work?
  227. 6CA7 Mikael Abdellah's KT88 SE amp?
  228. Tube heaters AC or DC?
  229. Question about system design with the K-12
  230. CCS on SE 2A3 cathode
  231. Saucepan Amplifier
  232. Rectifier query
  233. Fisher 400c
  234. Hum Problem
  235. Shanghai: please recommend some audio shops
  236. Calculating max Anode Voltage
  237. One thought about improved Single Ended amplifier
  238. low distortion sweep generator - not a PC
  239. Any articles on how to bias correctly
  240. Max dissp of EH 6sn7
  241. Switched Capacitor Impedance Converter
  242. Chinese Output transformer for 300B SET
  243. Is a VTVM useful?
  244. Permanent thread name proposal
  245. Loctal Rectifiers
  246. Silk Transformers
  247. Noob Power transformer for Tubelab SimpleSE
  248. Gain Q
  249. What cable between PSU and Amp?
  250. luxman mq 36 schematics

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