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  1. The 120Hz Blues...
  2. Amplitrex AT-1000 Tube Tester
  3. Grounding points....
  4. Cap values for CLC filter
  5. Tube glows red hot, blows fuse
  6. Independent Bias Adjust for Each Tube?
  7. KT-88 from a book
  8. Modelling PSU?!
  9. DD amp for ESLs...
  10. Today's tube manufacters, best is?
  11. Advice on hum in phono stage
  12. Cathode follower & SRPP q
  13. FREDs on PSU
  14. Hybrid Shenanigans
  15. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  16. 5AR4 heaters
  17. Bad Grounding,or Cheap Pot??
  18. Tube Construction Handbook
  19. WE 350: dry bass?
  20. What size capacitor I use for a 2A3 or 300B cathode bypass?
  21. Need helps with building poweramp stage
  22. Noah's Ark for electron tubes
  23. Fixed Bias suggestions
  24. OD3/OA3 voltage regulation design
  25. DHT filament heating with SMPS + CCS
  26. Using SE transformers in a PP circuit
  27. Schematic: Audio Innovations, The first audio amplifier
  28. Now THIS is tube DIY to the extreme
  29. Dynaco mkIII A431 op's
  30. Alternative to Power Transformer
  31. Help with e180f and ixys current reg
  32. help! no power, im lost
  33. Jerrycan amp (RH34SE)
  34. 12B4 Updates
  35. www.diykits.com.hk stepped volume control ... any good?
  36. Hammond L-100 conversion
  37. Anyone have the ASL model MGSI15 schematic ?
  38. Replacement for single-winding OPT?
  39. Buzz in new amp...
  40. 48V B+ linestage
  41. Line-Stage Opinion Question
  42. Audio applications of sweep tubes and ratings
  43. Differences in structure between parafeed ad gapped OPTs
  44. Take a look and let me know what you think
  45. Printed circuit board designing?
  46. SimpleSE - Switches, Wire, IEC, Jacks
  47. KT90 why this ?
  48. Break in
  49. Choke Design - Basic Questions
  50. Is this a good interstage transformer?
  51. Best tubes for bass?
  52. Tube amps & MP3's
  53. TRIO 15Hz Oscilloscope CS-1560A
  54. Newbie Needs Help Choosing A Kit
  55. I need a negative supply rail--but how?
  56. Strange Hum
  57. VR Tubes
  58. Understanding plate loads
  59. How do you know if your preamp has inverted the phase?
  60. 6P1 Equivalent
  61. EL34 and KT88??? 6550?
  62. one stage DHT amp
  63. 6V6 Output?
  64. Lineup of four: Help me choose?! OPT for SE
  65. 6DJ8 / 6922 tube?
  66. bias pilot sa 260
  67. Using vintage OPTs as PSU chokes ?
  68. crystal palace driver stage by morgan jones
  69. Why Are 12A*7 Tubes So Bad?
  70. Mikael's KT-88 question
  71. OPT for PSE 6c33c tubes
  72. 24v aikido distortion
  73. ED8000 SE or Parafeed?
  74. GZ33 Rectifier drop?
  75. counterpoint sa11
  76. High voltage problem
  77. Wire gauges
  78. Simple headphones out
  79. Mull(ard)ing over valve choice...
  80. Turning on B+ without heaters with aikido
  81. New Project - Plitron 4006
  82. Where in Brisbane can I get a transformer for my Chinese amp
  83. Etching or silkscreening chassis?
  84. can please someone explain this to me?
  85. A VCCS tube amp, how?
  86. How to add a subwoofer out?
  87. Kind of cool check it out
  88. new opt for s5 k16ls?
  89. Wanted Arkay SP6, Knight 83YX768 schematics
  90. toggle switch for input selector
  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. tubelab SE 300b power transformer
  108. Toroidal transformer potting can
  109. 300B - Push Pull or PSE to drive a commercial speaker
  110. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  111. Choke Input Filter.
  112. Preamp comparisons
  113. Amperite delay relays
  114. Help with making a tube amp?
  115. Linestage suggestion for Kuei Yang Wang's phonostage
  116. Altec Lansing 440B preamplifier
  117. Modding a Bogen CHB100...
  118. Report: One-Electron PRC as input choke
  119. Phase Splitter Name
  120. 6ck4 sweetspot
  121. Mystery Ebay amp purchase
  122. Triode versus Pentode
  123. Supply, Full wave, choke on center tap?
  124. Ping SY
  125. Interstage Transformer Loading
  126. Tube Amplifier Kit?
  127. Easy inexpensive tube buffer ideas?
  128. Running tubes at their maximum dissipation.
  129. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  130. DHT drivers - shootout
  131. Dynaco MK IV
  132. KT88 , Genalex or Chinese ? Help !!!
  133. output tubes for stereo 70
  134. 6H6P for Sonic Frontiers Line 2?
  135. Too much distortion
  136. Servo assisted CF LCR-filter
  137. 6v 5AR4?
  138. 845 Grid stopper value
  139. Chokes, sizing and ringing?
  140. Long tail 6sl7 for Dynaco stereo 70?
  141. Triode Fabrication Video
  142. Funny Hi-Fi quote
  143. 300B PP ph.split
  144. extend tube sockets, or tube "plugs"?
  145. Klipsch Promedia GMX A-2.1 + Decware Taboo
  146. So any ideas for a car type amp?
  147. Cathode Biasing a 6L6 quartet power stage
  148. Calling All Mullard 5-20 Aficionados
  149. Modelling a DC filament supply in PSU Designer II
  150. 12AX7 Preamp NOOB Question
  151. Adding aux input on a tube console
  152. one safety question
  153. E1148,CV6-How do you distinguish the anode/grid caps?
  154. dual value motor run caps
  155. Strange DC choke behavior
  156. Subwoofer out question.
  157. Tube 6N3 use pre for ChipAmp
  158. Hammond 1650W
  159. separating PSU for preamp
  160. sca-35
  161. A 6.3V regulator delivering 2.8A...?
  162. 6K:8 25W SE OPT, now what tube should I use?
  163. EL84 fixed bias PP Triode
  164. Tube Amp Kit Suggestions
  165. TT21 Vs KT88
  166. One-Electron PRC chokes as PS input choke?
  167. Magnavox 135BB
  168. Is there much point in tube preamps? (This isn't a troll)
  169. How does one determine saturation point of triode or pentode
  170. Help - 807 Technical problem
  171. woooohooo!!! 3 working el84 SEs
  172. westinghouse model 80 radio - eval for parts?
  173. Bogen J130 PA schematic
  174. Better Cap = Better Sound?
  175. Pilot SA 260 bias
  176. 12AX7 gain stage output impedance
  177. Small 1W hifi amp
  178. Tube Radio - What are G & F Terminals?
  179. Has anyone seen this?
  180. how would you Parallel a 12ua7 tube
  181. Tube mod a HT rcvr?
  182. how would i series a 12au7a
  183. does some have distortion schematics for 12au7a
  184. triode strapped tetrode
  185. 6F6G UL Amplifier
  186. Build a VT100?
  187. turrets for tube PC driver board needed
  188. Mikael Abdellah's kt88, (LOADLINES)
  189. piezo amp discussion on loudspeaker forum
  190. Balanced interconnect to differential amp - how would you do it?
  191. Ebay Tube Preamp Kit
  192. Kiwame resistors
  193. Mains isolation - would this work?
  194. 6CA7 Mikael Abdellah's KT88 SE amp?
  195. Tube heaters AC or DC?
  196. Question about system design with the K-12
  197. CCS on SE 2A3 cathode
  198. Saucepan Amplifier
  199. Rectifier query
  200. Fisher 400c
  201. Hum Problem
  202. Shanghai: please recommend some audio shops
  203. Calculating max Anode Voltage
  204. One thought about improved Single Ended amplifier
  205. low distortion sweep generator - not a PC
  206. Any articles on how to bias correctly
  207. Max dissp of EH 6sn7
  208. Switched Capacitor Impedance Converter
  209. Chinese Output transformer for 300B SET
  210. Is a VTVM useful?
  211. Permanent thread name proposal
  212. Loctal Rectifiers
  213. Silk Transformers
  214. Noob Power transformer for Tubelab SimpleSE
  215. Gain Q
  216. What cable between PSU and Amp?
  217. luxman mq 36 schematics
  218. Nonstandard tubes for audio? Quadrature grid chorus effect?
  219. Parts assortments sold with organizer
  220. Re-Gapping OPT
  221. I want to begin but I don't know how!!!
  222. Ultralinear with zener on the screen
  223. ReSEPP Design: 5 Tubes 4 Natural Sound
  224. Chinese Tube Amp?
  225. Ampex 351 - Mic pre
  226. Another ground question
  227. for the life of me
  228. Front Panel Express finishes
  229. transformer spec
  230. diode bridge - 10000uF cap - diode tube - small cap - HV+
  231. passive components affected by magnetic fields?
  232. Help on Pentode Octal Phono Stage (POPS)
  233. Cascode gain. Did I do something wrong?
  234. Bad Tube in my "new" Hammond C2 Organ preamp? HELP w/ diagnosis!!
  235. Need tube data for 10Y
  236. Bending aluminum?
  237. Does anyone recognise this 12AU7?
  238. Phase splitting--how does it work?
  239. Construction technique?
  240. function generator
  241. Ceramic or Magnetic with new preamp?
  242. Melos Triode 200 fuses
  243. Fantasia Disney amp
  244. Ella amplifier problems
  245. SE design questions before I start my project
  246. Single stage preamp
  247. Help me to identify unknown tube
  248. PSU Question...Full Wave Bridge
  249. 6as7g Se
  250. Music Angel Modification

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