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  1. Conqueror schematic
  2. Bassman 135 OT
  3. Ground reference
  4. Overdriven Capacitor?
  5. Tone Controls?
  6. My first "from scratch" design, SE KT88..........
  7. OPTs of questionable utility
  8. 6336 as a Rectifier
  9. tube power supply
  10. Anyone read Russian?
  11. PSU - dropping resistors?
  12. pre-amp design, just curious about your thoughts here.
  13. Using isolation transformer as a PSU transformer???
  14. KT66 loosing its getter
  15. Mullard schematic?
  16. Mikale Abdellah SE KT88 B+ voltage?
  17. Layout software
  18. Does anyone have any schematics for a parafeed SET amp?
  19. music angel kt88
  20. CB radio
  21. The end of the 300b Dream?
  22. Voltage divider to reduce 6v dc to 2vdc
  23. oil injected rca cables?
  24. Modification.....
  25. CHOKY'S EC8010 preamp
  26. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  27. tube checker
  28. 300B tube going dead after a few months
  29. KT88 se build NO GAIN please help
  30. mengyue mini valve amplifier
  31. Preamp suggest, please.
  32. Problem: Severe power transformer and choke vibration
  33. Amp Hack schematic questions
  34. This circuit ok?
  35. Tube ID anyone?
  36. Posted new books and data
  37. The sound of a failing tube rectifier?
  38. Proyect with PL36 and N2P (Russian ECC83)
  39. 300b LTspice model with grid current?
  40. Tri-amp using 2a3 SETs
  41. TentLabs Directly Heated Tubes Supply
  42. Bevois Valley Design Question
  43. Kofi Annan in: "Oscillation Blues"
  44. Common mode choke model
  45. UTC 20 Watt Amp - Any Experience?
  46. 6cz5s for EL84s
  47. The 120Hz Blues...
  48. Amplitrex AT-1000 Tube Tester
  49. audio amp. versus guitar amp
  50. Grounding points....
  51. Cap values for CLC filter
  52. Tube glows red hot, blows fuse
  53. Independent Bias Adjust for Each Tube?
  54. Mesa Boogie Maverick schematic any1?
  55. KT-88 from a book
  56. Modelling PSU?!
  57. DD amp for ESLs...
  58. Today's tube manufacters, best is?
  59. Advice on hum in phono stage
  60. Cathode follower & SRPP q
  61. FREDs on PSU
  62. Hybrid Shenanigans
  63. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  64. 5AR4 heaters
  65. Bad Grounding,or Cheap Pot??
  66. Tube Construction Handbook
  67. WE 350: dry bass?
  68. What size capacitor I use for a 2A3 or 300B cathode bypass?
  69. Need helps with building poweramp stage
  70. Noah's Ark for electron tubes
  71. Fixed Bias suggestions
  72. OD3/OA3 voltage regulation design
  73. DHT filament heating with SMPS + CCS
  74. Using SE transformers in a PP circuit
  75. EDCOR Releases Line of Guitar OPT's
  76. Schematic: Audio Innovations, The first audio amplifier
  77. Restoring 1948 Gibson GA-30 guitar amp(tube)
  78. Now THIS is tube DIY to the extreme
  79. Dynaco mkIII A431 op's
  80. Alternative to Power Transformer
  81. Help with e180f and ixys current reg
  82. Building a "Hiwatt" tube Bass Amp
  83. help! no power, im lost
  84. Jerrycan amp (RH34SE)
  85. 12B4 Updates
  86. www.diykits.com.hk stepped volume control ... any good?
  87. Hammond L-100 conversion
  88. Anyone have the ASL model MGSI15 schematic ?
  89. Replacement for single-winding OPT?
  90. Buzz in new amp...
  91. 48V B+ linestage
  92. Line-Stage Opinion Question
  93. Audio applications of sweep tubes and ratings
  94. Differences in structure between parafeed ad gapped OPTs
  95. Take a look and let me know what you think
  96. Printed circuit board designing?
  97. SimpleSE - Switches, Wire, IEC, Jacks
  98. KT90 why this ?
  99. Break in
  100. Choke Design - Basic Questions
  101. Is this a good interstage transformer?
  102. Best tubes for bass?
  103. Tube amps & MP3's
  104. TRIO 15Hz Oscilloscope CS-1560A
  105. Newbie Needs Help Choosing A Kit
  106. I need a negative supply rail--but how?
  107. Strange Hum
  108. VR Tubes
  109. Understanding plate loads
  110. How do you know if your preamp has inverted the phase?
  111. Bogen J130 PA to guitar amp?
  112. 6P1 Equivalent
  113. EL34 and KT88??? 6550?
  114. one stage DHT amp
  115. 6V6 Output?
  116. Lineup of four: Help me choose?! OPT for SE
  117. 6DJ8 / 6922 tube?
  118. bias pilot sa 260
  119. Using vintage OPTs as PSU chokes ?
  120. crystal palace driver stage by morgan jones
  121. Why Are 12A*7 Tubes So Bad?
  122. Mikael's KT-88 question
  123. OPT for PSE 6c33c tubes
  124. 24v aikido distortion
  125. ED8000 SE or Parafeed?
  126. GZ33 Rectifier drop?
  127. counterpoint sa11
  128. High voltage problem
  129. Wire gauges
  130. Simple headphones out
  131. Mull(ard)ing over valve choice...
  132. Turning on B+ without heaters with aikido
  133. New Project - Plitron 4006
  134. Where in Brisbane can I get a transformer for my Chinese amp
  135. Etching or silkscreening chassis?
  136. can please someone explain this to me?
  137. A VCCS tube amp, how?
  138. How to add a subwoofer out?
  139. Kind of cool check it out
  140. new opt for s5 k16ls?
  141. Wanted Arkay SP6, Knight 83YX768 schematics
  142. toggle switch for input selector
  143. Tube Rectifier protection
  144. Quick Q on Max G2/Screen Volts..
  145. Cathodyne follower? :)
  146. Real music power
  147. Tube info needed
  148. Petrol Head Amp
  149. Help Needed- Replacement Volume Pot For a Fisher KX100
  150. What are these caps good for?
  151. 300B Set amp some variations
  152. my second design circuit(hifhgain guitar amp)
  153. why p-p amp RL for class B is 1/2 the class A load?
  154. Is this circuit ok?
  155. JTM60 capacitor question
  156. Attenuators ------ Please Help
  157. Transformer Coupled Pentode Question
  158. no response needed 903@klipschorns
  159. KT88: EH vs. Winged C
  160. Voltage swing on a guitar pick-up?
  161. Anyone have experience with the China made tube amps
  162. tubelab SE 300b power transformer
  163. Toroidal transformer potting can
  164. 300B - Push Pull or PSE to drive a commercial speaker
  165. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  166. Choke Input Filter.
  167. Preamp comparisons
  168. Amperite delay relays
  169. Help with making a tube amp?
  170. Linestage suggestion for Kuei Yang Wang's phonostage
  171. Altec Lansing 440B preamplifier
  172. Modding a Bogen CHB100...
  173. Report: One-Electron PRC as input choke
  174. Phase Splitter Name
  175. 6ck4 sweetspot
  176. Mystery Ebay amp purchase
  177. Triode versus Pentode
  178. Supply, Full wave, choke on center tap?
  179. Ping SY
  180. Interstage Transformer Loading
  181. Tube Amplifier Kit?
  182. Easy inexpensive tube buffer ideas?
  183. Running tubes at their maximum dissipation.
  184. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  185. DHT drivers - shootout
  186. Dynaco MK IV
  187. Fender Bassman- AB165 capacitor toss up
  188. KT88 , Genalex or Chinese ? Help !!!
  189. output tubes for stereo 70
  190. 6H6P for Sonic Frontiers Line 2?
  191. Too much distortion
  192. Servo assisted CF LCR-filter
  193. 6v 5AR4?
  194. 845 Grid stopper value
  195. Chokes, sizing and ringing?
  196. Long tail 6sl7 for Dynaco stereo 70?
  197. Triode Fabrication Video
  198. Funny Hi-Fi quote
  199. 300B PP ph.split
  200. extend tube sockets, or tube "plugs"?
  201. Klipsch Promedia GMX A-2.1 + Decware Taboo
  202. So any ideas for a car type amp?
  203. Cathode Biasing a 6L6 quartet power stage
  204. Calling All Mullard 5-20 Aficionados
  205. Modelling a DC filament supply in PSU Designer II
  206. Guitar Preamp Tube combination
  207. 12AX7 Preamp NOOB Question
  208. Adding aux input on a tube console
  209. one safety question
  210. E1148,CV6-How do you distinguish the anode/grid caps?
  211. dual value motor run caps
  212. Strange DC choke behavior
  213. Subwoofer out question.
  214. Tube 6N3 use pre for ChipAmp
  215. Hammond 1650W
  216. separating PSU for preamp
  217. sca-35
  218. A 6.3V regulator delivering 2.8A...?
  219. 6K:8 25W SE OPT, now what tube should I use?
  220. EL84 fixed bias PP Triode
  221. Tube Amp Kit Suggestions
  222. TT21 Vs KT88
  223. One-Electron PRC chokes as PS input choke?
  224. Magnavox 135BB
  225. Is there much point in tube preamps? (This isn't a troll)
  226. How does one determine saturation point of triode or pentode
  227. Help - 807 Technical problem
  228. woooohooo!!! 3 working el84 SEs
  229. westinghouse model 80 radio - eval for parts?
  230. Bogen J130 PA schematic
  231. Marshall JMP-1 high voltage value ??
  232. Better Cap = Better Sound?
  233. Pilot SA 260 bias
  234. 12AX7 gain stage output impedance
  235. Small 1W hifi amp
  236. Tube Radio - What are G & F Terminals?
  237. Has anyone seen this?
  238. how would you Parallel a 12ua7 tube
  239. Tube mod a HT rcvr?
  240. how would i series a 12au7a
  241. does some have distortion schematics for 12au7a
  242. triode strapped tetrode
  243. 6F6G UL Amplifier
  244. Build a VT100?
  245. turrets for tube PC driver board needed
  246. Mikael Abdellah's kt88, (LOADLINES)
  247. piezo amp discussion on loudspeaker forum
  248. Balanced interconnect to differential amp - how would you do it?
  249. Ebay Tube Preamp Kit
  250. Kiwame resistors

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