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  1. Common mode choke model
  2. UTC 20 Watt Amp - Any Experience?
  3. 6cz5s for EL84s
  4. The 120Hz Blues...
  5. Grounding points....
  6. Cap values for CLC filter
  7. Tube glows red hot, blows fuse
  8. Independent Bias Adjust for Each Tube?
  9. KT-88 from a book
  10. Modelling PSU?!
  11. DD amp for ESLs...
  12. Today's tube manufacters, best is?
  13. Advice on hum in phono stage
  14. Cathode follower & SRPP q
  15. FREDs on PSU
  16. Hybrid Shenanigans
  17. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  18. 5AR4 heaters
  19. Bad Grounding,or Cheap Pot??
  20. Tube Construction Handbook
  21. WE 350: dry bass?
  22. What size capacitor I use for a 2A3 or 300B cathode bypass?
  23. Need helps with building poweramp stage
  24. Noah's Ark for electron tubes
  25. Fixed Bias suggestions
  26. OD3/OA3 voltage regulation design
  27. DHT filament heating with SMPS + CCS
  28. Using SE transformers in a PP circuit
  29. Schematic: Audio Innovations, The first audio amplifier
  30. Now THIS is tube DIY to the extreme
  31. Dynaco mkIII A431 op's
  32. Alternative to Power Transformer
  33. Help with e180f and ixys current reg
  34. help! no power, im lost
  35. Jerrycan amp (RH34SE)
  36. 12B4 Updates
  37. Hammond L-100 conversion
  38. Anyone have the ASL model MGSI15 schematic ?
  39. Replacement for single-winding OPT?
  40. Buzz in new amp...
  41. 48V B+ linestage
  42. Line-Stage Opinion Question
  43. Audio applications of sweep tubes and ratings
  44. Differences in structure between parafeed ad gapped OPTs
  45. Take a look and let me know what you think
  46. Printed circuit board designing?
  47. SimpleSE - Switches, Wire, IEC, Jacks
  48. KT90 why this ?
  49. Break in
  50. Choke Design - Basic Questions
  51. Is this a good interstage transformer?
  52. Best tubes for bass?
  53. Tube amps & MP3's
  54. TRIO 15Hz Oscilloscope CS-1560A
  55. Newbie Needs Help Choosing A Kit
  56. I need a negative supply rail--but how?
  57. Strange Hum
  58. VR Tubes
  59. Understanding plate loads
  60. How do you know if your preamp has inverted the phase?
  61. 6P1 Equivalent
  62. EL34 and KT88??? 6550?
  63. one stage DHT amp
  64. 6V6 Output?
  65. Lineup of four: Help me choose?! OPT for SE
  66. 6DJ8 / 6922 tube?
  67. bias pilot sa 260
  68. Using vintage OPTs as PSU chokes ?
  69. crystal palace driver stage by morgan jones
  70. Why Are 12A*7 Tubes So Bad?
  71. Mikael's KT-88 question
  72. OPT for PSE 6c33c tubes
  73. 24v aikido distortion
  74. ED8000 SE or Parafeed?
  75. GZ33 Rectifier drop?
  76. counterpoint sa11
  77. High voltage problem
  78. Wire gauges
  79. Simple headphones out
  80. Mull(ard)ing over valve choice...
  81. Turning on B+ without heaters with aikido
  82. New Project - Plitron 4006
  83. Where in Brisbane can I get a transformer for my Chinese amp
  84. Etching or silkscreening chassis?
  85. can please someone explain this to me?
  86. A VCCS tube amp, how?
  87. How to add a subwoofer out?
  88. Kind of cool check it out
  89. new opt for s5 k16ls?
  90. Wanted Arkay SP6, Knight 83YX768 schematics
  91. Tube Rectifier protection
  92. Quick Q on Max G2/Screen Volts..
  93. Cathodyne follower? :)
  94. Real music power
  95. Tube info needed
  96. Petrol Head Amp
  97. Help Needed- Replacement Volume Pot For a Fisher KX100
  98. What are these caps good for?
  99. 300B Set amp some variations
  100. why p-p amp RL for class B is 1/2 the class A load?
  101. Is this circuit ok?
  102. Attenuators ------ Please Help
  103. Transformer Coupled Pentode Question
  104. no response needed 903@klipschorns
  105. KT88: EH vs. Winged C
  106. Anyone have experience with the China made tube amps
  107. Toroidal transformer potting can
  108. 300B - Push Pull or PSE to drive a commercial speaker
  109. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  110. Choke Input Filter.
  111. Preamp comparisons
  112. Amperite delay relays
  113. Help with making a tube amp?
  114. Linestage suggestion for Kuei Yang Wang's phonostage
  115. Altec Lansing 440B preamplifier
  116. Modding a Bogen CHB100...
  117. Report: One-Electron PRC as input choke
  118. Phase Splitter Name
  119. 6ck4 sweetspot
  120. Mystery Ebay amp purchase
  121. Triode versus Pentode
  122. Supply, Full wave, choke on center tap?
  123. Ping SY
  124. Interstage Transformer Loading
  125. Tube Amplifier Kit?
  126. Easy inexpensive tube buffer ideas?
  127. Running tubes at their maximum dissipation.
  128. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  129. DHT drivers - shootout
  130. Dynaco MK IV
  131. KT88 , Genalex or Chinese ? Help !!!
  132. output tubes for stereo 70
  133. 6H6P for Sonic Frontiers Line 2?
  134. Too much distortion
  135. Servo assisted CF LCR-filter
  136. 6v 5AR4?
  137. 845 Grid stopper value
  138. Chokes, sizing and ringing?
  139. Long tail 6sl7 for Dynaco stereo 70?
  140. Triode Fabrication Video
  141. Funny Hi-Fi quote
  142. 300B PP ph.split
  143. extend tube sockets, or tube "plugs"?
  144. Klipsch Promedia GMX A-2.1 + Decware Taboo
  145. So any ideas for a car type amp?
  146. Cathode Biasing a 6L6 quartet power stage
  147. Calling All Mullard 5-20 Aficionados
  148. Modelling a DC filament supply in PSU Designer II
  149. 12AX7 Preamp NOOB Question
  150. Adding aux input on a tube console
  151. one safety question
  152. E1148,CV6-How do you distinguish the anode/grid caps?
  153. Strange DC choke behavior
  154. Subwoofer out question.
  155. Tube 6N3 use pre for ChipAmp
  156. Hammond 1650W
  157. separating PSU for preamp
  158. sca-35
  159. A 6.3V regulator delivering 2.8A...?
  160. 6K:8 25W SE OPT, now what tube should I use?
  161. EL84 fixed bias PP Triode
  162. Tube Amp Kit Suggestions
  163. TT21 Vs KT88
  164. One-Electron PRC chokes as PS input choke?
  165. Magnavox 135BB
  166. Is there much point in tube preamps? (This isn't a troll)
  167. How does one determine saturation point of triode or pentode
  168. Help - 807 Technical problem
  169. woooohooo!!! 3 working el84 SEs
  170. westinghouse model 80 radio - eval for parts?
  171. Bogen J130 PA schematic
  172. Better Cap = Better Sound?
  173. Pilot SA 260 bias
  174. 12AX7 gain stage output impedance
  175. Small 1W hifi amp
  176. Tube Radio - What are G & F Terminals?
  177. Has anyone seen this?
  178. how would you Parallel a 12ua7 tube
  179. Tube mod a HT rcvr?
  180. how would i series a 12au7a
  181. does some have distortion schematics for 12au7a
  182. triode strapped tetrode
  183. 6F6G UL Amplifier
  184. Build a VT100?
  185. turrets for tube PC driver board needed
  186. Mikael Abdellah's KT88, Loadlines
  187. piezo amp discussion on loudspeaker forum
  188. Balanced interconnect to differential amp - how would you do it?
  189. Ebay Tube Preamp Kit
  190. Kiwame resistors
  191. Mains isolation - would this work?
  192. 6CA7 Mikael Abdellah's KT88 SE amp?
  193. Tube heaters AC or DC?
  194. Question about system design with the K-12
  195. CCS on SE 2A3 cathode
  196. Saucepan Amplifier
  197. Rectifier query
  198. Fisher 400c
  199. Hum Problem
  200. Shanghai: please recommend some audio shops
  201. Calculating max Anode Voltage
  202. One thought about improved Single Ended amplifier
  203. low distortion sweep generator - not a PC
  204. Any articles on how to bias correctly
  205. Max dissp of EH 6sn7
  206. Switched Capacitor Impedance Converter
  207. Chinese Output transformer for 300B SET
  208. Is a VTVM useful?
  209. Permanent thread name proposal
  210. Loctal Rectifiers
  211. Silk Transformers
  212. Gain Q
  213. What cable between PSU and Amp?
  214. luxman mq 36 schematics
  215. Nonstandard tubes for audio? Quadrature grid chorus effect?
  216. Parts assortments sold with organizer
  217. Re-Gapping OPT
  218. I want to begin but I don't know how!!!
  219. Ultralinear with zener on the screen
  220. ReSEPP Design: 5 Tubes 4 Natural Sound
  221. Chinese Tube Amp?
  222. Ampex 351 - Mic pre
  223. Another ground question
  224. for the life of me
  225. Front Panel Express finishes
  226. transformer spec
  227. diode bridge - 10000uF cap - diode tube - small cap - HV+
  228. passive components affected by magnetic fields?
  229. Help on Pentode Octal Phono Stage (POPS)
  230. Cascode gain. Did I do something wrong?
  231. Bad Tube in my "new" Hammond C2 Organ preamp? HELP w/ diagnosis!!
  232. Need tube data for 10Y
  233. Bending aluminum?
  234. Does anyone recognise this 12AU7?
  235. Phase splitting--how does it work?
  236. Construction technique?
  237. function generator
  238. Ceramic or Magnetic with new preamp?
  239. Melos Triode 200 fuses
  240. Fantasia Disney amp
  241. Ella amplifier problems
  242. SE design questions before I start my project
  243. Single stage preamp
  244. Help me to identify unknown tube
  245. PSU Question...Full Wave Bridge
  246. 6as7g Se
  247. Music Angel Modification
  248. 6SL7 Phono Preamp
  249. Grounded Grid Preamp
  250. Formula question

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