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  1. Quicksilver conversion
  2. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  3. Hammond Transformers in Montreal/Canada
  4. Can't find data for 8624
  5. Any advice on modifying a 2A3 SET amp to parafeed?
  6. Output impedance for non published PP configuration
  7. Grid stopper resistor required (KT66)?
  8. Ask Jan First OPTs
  9. For what are high mu triodes still useful?
  10. CCa "low noise"?
  11. Upgrading my Audio Research VT 130 SE Tube amp
  12. 100ma FSD voltmeter
  13. Conqueror schematic
  14. Bassman 135 OT
  15. Ground reference
  16. Overdriven Capacitor?
  17. Tone Controls?
  18. My first "from scratch" design, SE KT88..........
  19. OPTs of questionable utility
  20. 6336 as a Rectifier
  21. tube power supply
  22. Anyone read Russian?
  23. PSU - dropping resistors?
  24. pre-amp design, just curious about your thoughts here.
  25. Using isolation transformer as a PSU transformer???
  26. KT66 loosing its getter
  27. Mullard schematic?
  28. Mikale Abdellah SE KT88 B+ voltage?
  29. Layout software
  30. Does anyone have any schematics for a parafeed SET amp?
  31. music angel kt88
  32. CB radio
  33. The end of the 300b Dream?
  34. Voltage divider to reduce 6v dc to 2vdc
  35. oil injected rca cables?
  36. Modification.....
  37. CHOKY'S EC8010 preamp
  38. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  39. tube checker
  40. 300B tube going dead after a few months
  41. KT88 se build NO GAIN please help
  42. mengyue mini valve amplifier
  43. Preamp suggest, please.
  44. Problem: Severe power transformer and choke vibration
  45. Amp Hack schematic questions
  46. This circuit ok?
  47. Tube ID anyone?
  48. Posted new books and data
  49. The sound of a failing tube rectifier?
  50. Proyect with PL36 and N2P (Russian ECC83)
  51. 300b LTspice model with grid current?
  52. Tri-amp using 2a3 SETs
  53. TentLabs Directly Heated Tubes Supply
  54. Bevois Valley Design Question
  55. Kofi Annan in: "Oscillation Blues"
  56. Common mode choke model
  57. UTC 20 Watt Amp - Any Experience?
  58. 6cz5s for EL84s
  59. The 120Hz Blues...
  60. Amplitrex AT-1000 Tube Tester
  61. audio amp. versus guitar amp
  62. Grounding points....
  63. Cap values for CLC filter
  64. Tube glows red hot, blows fuse
  65. Independent Bias Adjust for Each Tube?
  66. Mesa Boogie Maverick schematic any1?
  67. KT-88 from a book
  68. Modelling PSU?!
  69. DD amp for ESLs...
  70. Today's tube manufacters, best is?
  71. Advice on hum in phono stage
  72. Cathode follower & SRPP q
  73. FREDs on PSU
  74. Hybrid Shenanigans
  75. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  76. 5AR4 heaters
  77. Bad Grounding,or Cheap Pot??
  78. Tube Construction Handbook
  79. WE 350: dry bass?
  80. What size capacitor I use for a 2A3 or 300B cathode bypass?
  81. Need helps with building poweramp stage
  82. Noah's Ark for electron tubes
  83. Fixed Bias suggestions
  84. OD3/OA3 voltage regulation design
  85. DHT filament heating with SMPS + CCS
  86. Using SE transformers in a PP circuit
  87. EDCOR Releases Line of Guitar OPT's
  88. Schematic: Audio Innovations, The first audio amplifier
  89. Restoring 1948 Gibson GA-30 guitar amp(tube)
  90. Now THIS is tube DIY to the extreme
  91. Dynaco mkIII A431 op's
  92. Alternative to Power Transformer
  93. Help with e180f and ixys current reg
  94. Building a "Hiwatt" tube Bass Amp
  95. help! no power, im lost
  96. Jerrycan amp (RH34SE)
  97. 12B4 Updates
  98. www.diykits.com.hk stepped volume control ... any good?
  99. Hammond L-100 conversion
  100. Anyone have the ASL model MGSI15 schematic ?
  101. Replacement for single-winding OPT?
  102. Buzz in new amp...
  103. 48V B+ linestage
  104. Line-Stage Opinion Question
  105. Audio applications of sweep tubes and ratings
  106. Differences in structure between parafeed ad gapped OPTs
  107. Take a look and let me know what you think
  108. Printed circuit board designing?
  109. SimpleSE - Switches, Wire, IEC, Jacks
  110. KT90 why this ?
  111. Break in
  112. Choke Design - Basic Questions
  113. Is this a good interstage transformer?
  114. Best tubes for bass?
  115. Tube amps & MP3's
  116. TRIO 15Hz Oscilloscope CS-1560A
  117. Newbie Needs Help Choosing A Kit
  118. I need a negative supply rail--but how?
  119. Strange Hum
  120. VR Tubes
  121. Understanding plate loads
  122. How do you know if your preamp has inverted the phase?
  123. Bogen J130 PA to guitar amp?
  124. 6P1 Equivalent
  125. EL34 and KT88??? 6550?
  126. one stage DHT amp
  127. 6V6 Output?
  128. Lineup of four: Help me choose?! OPT for SE
  129. 6DJ8 / 6922 tube?
  130. bias pilot sa 260
  131. Using vintage OPTs as PSU chokes ?
  132. crystal palace driver stage by morgan jones
  133. Why Are 12A*7 Tubes So Bad?
  134. Mikael's KT-88 question
  135. OPT for PSE 6c33c tubes
  136. 24v aikido distortion
  137. ED8000 SE or Parafeed?
  138. GZ33 Rectifier drop?
  139. counterpoint sa11
  140. High voltage problem
  141. Wire gauges
  142. Simple headphones out
  143. Mull(ard)ing over valve choice...
  144. Turning on B+ without heaters with aikido
  145. New Project - Plitron 4006
  146. Where in Brisbane can I get a transformer for my Chinese amp
  147. Etching or silkscreening chassis?
  148. can please someone explain this to me?
  149. A VCCS tube amp, how?
  150. How to add a subwoofer out?
  151. Kind of cool check it out
  152. new opt for s5 k16ls?
  153. Wanted Arkay SP6, Knight 83YX768 schematics
  154. toggle switch for input selector
  155. Tube Rectifier protection
  156. Quick Q on Max G2/Screen Volts..
  157. Cathodyne follower? :)
  158. Real music power
  159. Tube info needed
  160. Petrol Head Amp
  161. Help Needed- Replacement Volume Pot For a Fisher KX100
  162. What are these caps good for?
  163. 300B Set amp some variations
  164. my second design circuit(hifhgain guitar amp)
  165. why p-p amp RL for class B is 1/2 the class A load?
  166. Is this circuit ok?
  167. JTM60 capacitor question
  168. Attenuators ------ Please Help
  169. Transformer Coupled Pentode Question
  170. no response needed 903@klipschorns
  171. KT88: EH vs. Winged C
  172. Voltage swing on a guitar pick-up?
  173. Anyone have experience with the China made tube amps
  174. tubelab SE 300b power transformer
  175. Toroidal transformer potting can
  176. 300B - Push Pull or PSE to drive a commercial speaker
  177. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  178. Choke Input Filter.
  179. Preamp comparisons
  180. Amperite delay relays
  181. Help with making a tube amp?
  182. Linestage suggestion for Kuei Yang Wang's phonostage
  183. Altec Lansing 440B preamplifier
  184. Modding a Bogen CHB100...
  185. Report: One-Electron PRC as input choke
  186. Phase Splitter Name
  187. 6ck4 sweetspot
  188. Mystery Ebay amp purchase
  189. Triode versus Pentode
  190. Supply, Full wave, choke on center tap?
  191. Ping SY
  192. Interstage Transformer Loading
  193. Tube Amplifier Kit?
  194. Easy inexpensive tube buffer ideas?
  195. Running tubes at their maximum dissipation.
  196. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  197. DHT drivers - shootout
  198. Dynaco MK IV
  199. Fender Bassman- AB165 capacitor toss up
  200. KT88 , Genalex or Chinese ? Help !!!
  201. output tubes for stereo 70
  202. 6H6P for Sonic Frontiers Line 2?
  203. Too much distortion
  204. Servo assisted CF LCR-filter
  205. 6v 5AR4?
  206. 845 Grid stopper value
  207. Chokes, sizing and ringing?
  208. Long tail 6sl7 for Dynaco stereo 70?
  209. Triode Fabrication Video
  210. Funny Hi-Fi quote
  211. 300B PP ph.split
  212. extend tube sockets, or tube "plugs"?
  213. Klipsch Promedia GMX A-2.1 + Decware Taboo
  214. So any ideas for a car type amp?
  215. Cathode Biasing a 6L6 quartet power stage
  216. Calling All Mullard 5-20 Aficionados
  217. Modelling a DC filament supply in PSU Designer II
  218. Guitar Preamp Tube combination
  219. 12AX7 Preamp NOOB Question
  220. Adding aux input on a tube console
  221. one safety question
  222. E1148,CV6-How do you distinguish the anode/grid caps?
  223. dual value motor run caps
  224. Strange DC choke behavior
  225. Subwoofer out question.
  226. Tube 6N3 use pre for ChipAmp
  227. Hammond 1650W
  228. separating PSU for preamp
  229. sca-35
  230. A 6.3V regulator delivering 2.8A...?
  231. 6K:8 25W SE OPT, now what tube should I use?
  232. EL84 fixed bias PP Triode
  233. Tube Amp Kit Suggestions
  234. TT21 Vs KT88
  235. One-Electron PRC chokes as PS input choke?
  236. Magnavox 135BB
  237. Is there much point in tube preamps? (This isn't a troll)
  238. How does one determine saturation point of triode or pentode
  239. Help - 807 Technical problem
  240. woooohooo!!! 3 working el84 SEs
  241. westinghouse model 80 radio - eval for parts?
  242. Bogen J130 PA schematic
  243. Marshall JMP-1 high voltage value ??
  244. Better Cap = Better Sound?
  245. Pilot SA 260 bias
  246. 12AX7 gain stage output impedance
  247. Small 1W hifi amp
  248. Tube Radio - What are G & F Terminals?
  249. Has anyone seen this?
  250. how would you Parallel a 12ua7 tube

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