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  1. 6cz5s for EL84s
  2. The 120Hz Blues...
  3. Amplitrex AT-1000 Tube Tester
  4. audio amp. versus guitar amp
  5. Grounding points....
  6. Cap values for CLC filter
  7. Tube glows red hot, blows fuse
  8. Independent Bias Adjust for Each Tube?
  9. Mesa Boogie Maverick schematic any1?
  10. KT-88 from a book
  11. Modelling PSU?!
  12. DD amp for ESLs...
  13. Today's tube manufacters, best is?
  14. Advice on hum in phono stage
  15. Cathode follower & SRPP q
  16. FREDs on PSU
  17. Hybrid Shenanigans
  18. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  19. 5AR4 heaters
  20. Bad Grounding,or Cheap Pot??
  21. Tube Construction Handbook
  22. WE 350: dry bass?
  23. What size capacitor I use for a 2A3 or 300B cathode bypass?
  24. Need helps with building poweramp stage
  25. Noah's Ark for electron tubes
  26. Fixed Bias suggestions
  27. OD3/OA3 voltage regulation design
  28. DHT filament heating with SMPS + CCS
  29. Using SE transformers in a PP circuit
  30. EDCOR Releases Line of Guitar OPT's
  31. Schematic: Audio Innovations, The first audio amplifier
  32. Restoring 1948 Gibson GA-30 guitar amp(tube)
  33. Now THIS is tube DIY to the extreme
  34. Dynaco mkIII A431 op's
  35. Alternative to Power Transformer
  36. Help with e180f and ixys current reg
  37. Building a "Hiwatt" tube Bass Amp
  38. help! no power, im lost
  39. Jerrycan amp (RH34SE)
  40. 12B4 Updates
  41. www.diykits.com.hk stepped volume control ... any good?
  42. Hammond L-100 conversion
  43. Anyone have the ASL model MGSI15 schematic ?
  44. Replacement for single-winding OPT?
  45. Buzz in new amp...
  46. 48V B+ linestage
  47. Line-Stage Opinion Question
  48. Audio applications of sweep tubes and ratings
  49. Differences in structure between parafeed ad gapped OPTs
  50. Take a look and let me know what you think
  51. Printed circuit board designing?
  52. SimpleSE - Switches, Wire, IEC, Jacks
  53. KT90 why this ?
  54. Break in
  55. Choke Design - Basic Questions
  56. Is this a good interstage transformer?
  57. Best tubes for bass?
  58. Tube amps & MP3's
  59. TRIO 15Hz Oscilloscope CS-1560A
  60. Newbie Needs Help Choosing A Kit
  61. I need a negative supply rail--but how?
  62. Strange Hum
  63. VR Tubes
  64. Understanding plate loads
  65. How do you know if your preamp has inverted the phase?
  66. Bogen J130 PA to guitar amp?
  67. 6P1 Equivalent
  68. EL34 and KT88??? 6550?
  69. one stage DHT amp
  70. 6V6 Output?
  71. Lineup of four: Help me choose?! OPT for SE
  72. 6DJ8 / 6922 tube?
  73. bias pilot sa 260
  74. Using vintage OPTs as PSU chokes ?
  75. crystal palace driver stage by morgan jones
  76. Why Are 12A*7 Tubes So Bad?
  77. Mikael's KT-88 question
  78. OPT for PSE 6c33c tubes
  79. 24v aikido distortion
  80. ED8000 SE or Parafeed?
  81. GZ33 Rectifier drop?
  82. counterpoint sa11
  83. High voltage problem
  84. Wire gauges
  85. Simple headphones out
  86. Mull(ard)ing over valve choice...
  87. Turning on B+ without heaters with aikido
  88. New Project - Plitron 4006
  89. Where in Brisbane can I get a transformer for my Chinese amp
  90. Etching or silkscreening chassis?
  91. can please someone explain this to me?
  92. A VCCS tube amp, how?
  93. How to add a subwoofer out?
  94. Kind of cool check it out
  95. new opt for s5 k16ls?
  96. Wanted Arkay SP6, Knight 83YX768 schematics
  97. toggle switch for input selector
  98. Tube Rectifier protection
  99. Quick Q on Max G2/Screen Volts..
  100. Cathodyne follower? :)
  101. Real music power
  102. Tube info needed
  103. Petrol Head Amp
  104. Help Needed- Replacement Volume Pot For a Fisher KX100
  105. What are these caps good for?
  106. 300B Set amp some variations
  107. my second design circuit(hifhgain guitar amp)
  108. why p-p amp RL for class B is 1/2 the class A load?
  109. Is this circuit ok?
  110. JTM60 capacitor question
  111. Attenuators ------ Please Help
  112. Transformer Coupled Pentode Question
  113. no response needed 903@klipschorns
  114. KT88: EH vs. Winged C
  115. Voltage swing on a guitar pick-up?
  116. Anyone have experience with the China made tube amps
  117. tubelab SE 300b power transformer
  118. Toroidal transformer potting can
  119. 300B - Push Pull or PSE to drive a commercial speaker
  120. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  121. Choke Input Filter.
  122. Preamp comparisons
  123. Amperite delay relays
  124. Help with making a tube amp?
  125. Linestage suggestion for Kuei Yang Wang's phonostage
  126. Altec Lansing 440B preamplifier
  127. Modding a Bogen CHB100...
  128. Report: One-Electron PRC as input choke
  129. Phase Splitter Name
  130. 6ck4 sweetspot
  131. Mystery Ebay amp purchase
  132. Triode versus Pentode
  133. Supply, Full wave, choke on center tap?
  134. Ping SY
  135. Interstage Transformer Loading
  136. Tube Amplifier Kit?
  137. Easy inexpensive tube buffer ideas?
  138. Running tubes at their maximum dissipation.
  139. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  140. DHT drivers - shootout
  141. Dynaco MK IV
  142. Fender Bassman- AB165 capacitor toss up
  143. KT88 , Genalex or Chinese ? Help !!!
  144. output tubes for stereo 70
  145. 6H6P for Sonic Frontiers Line 2?
  146. Too much distortion
  147. Servo assisted CF LCR-filter
  148. 6v 5AR4?
  149. 845 Grid stopper value
  150. Chokes, sizing and ringing?
  151. Long tail 6sl7 for Dynaco stereo 70?
  152. Triode Fabrication Video
  153. Funny Hi-Fi quote
  154. 300B PP ph.split
  155. extend tube sockets, or tube "plugs"?
  156. Klipsch Promedia GMX A-2.1 + Decware Taboo
  157. So any ideas for a car type amp?
  158. Cathode Biasing a 6L6 quartet power stage
  159. Calling All Mullard 5-20 Aficionados
  160. Modelling a DC filament supply in PSU Designer II
  161. Guitar Preamp Tube combination
  162. 12AX7 Preamp NOOB Question
  163. Adding aux input on a tube console
  164. one safety question
  165. E1148,CV6-How do you distinguish the anode/grid caps?
  166. dual value motor run caps
  167. Strange DC choke behavior
  168. Subwoofer out question.
  169. Tube 6N3 use pre for ChipAmp
  170. Hammond 1650W
  171. separating PSU for preamp
  172. sca-35
  173. A 6.3V regulator delivering 2.8A...?
  174. 6K:8 25W SE OPT, now what tube should I use?
  175. EL84 fixed bias PP Triode
  176. Tube Amp Kit Suggestions
  177. TT21 Vs KT88
  178. One-Electron PRC chokes as PS input choke?
  179. Magnavox 135BB
  180. Is there much point in tube preamps? (This isn't a troll)
  181. How does one determine saturation point of triode or pentode
  182. Help - 807 Technical problem
  183. woooohooo!!! 3 working el84 SEs
  184. westinghouse model 80 radio - eval for parts?
  185. Bogen J130 PA schematic
  186. Marshall JMP-1 high voltage value ??
  187. Better Cap = Better Sound?
  188. Pilot SA 260 bias
  189. 12AX7 gain stage output impedance
  190. Small 1W hifi amp
  191. Tube Radio - What are G & F Terminals?
  192. Has anyone seen this?
  193. how would you Parallel a 12ua7 tube
  194. Tube mod a HT rcvr?
  195. how would i series a 12au7a
  196. does some have distortion schematics for 12au7a
  197. triode strapped tetrode
  198. 6F6G UL Amplifier
  199. Build a VT100?
  200. turrets for tube PC driver board needed
  201. Mikael Abdellah's kt88, (LOADLINES)
  202. piezo amp discussion on loudspeaker forum
  203. Balanced interconnect to differential amp - how would you do it?
  204. Ebay Tube Preamp Kit
  205. Kiwame resistors
  206. Mains isolation - would this work?
  207. 6CA7 Mikael Abdellah's KT88 SE amp?
  208. Tube heaters AC or DC?
  209. Question about system design with the K-12
  210. CCS on SE 2A3 cathode
  211. Saucepan Amplifier
  212. Rectifier query
  213. Fisher 400c
  214. Hum Problem
  215. Shanghai: please recommend some audio shops
  216. Calculating max Anode Voltage
  217. One thought about improved Single Ended amplifier
  218. low distortion sweep generator - not a PC
  219. Any articles on how to bias correctly
  220. Max dissp of EH 6sn7
  221. Switched Capacitor Impedance Converter
  222. Chinese Output transformer for 300B SET
  223. Is a VTVM useful?
  224. Permanent thread name proposal
  225. Loctal Rectifiers
  226. Silk Transformers
  227. Noob Power transformer for Tubelab SimpleSE
  228. Gain Q
  229. What cable between PSU and Amp?
  230. luxman mq 36 schematics
  231. Nonstandard tubes for audio? Quadrature grid chorus effect?
  232. Parts assortments sold with organizer
  233. Re-Gapping OPT
  234. I want to begin but I don't know how!!!
  235. Ultralinear with zener on the screen
  236. ReSEPP Design: 5 Tubes 4 Natural Sound
  237. Chinese Tube Amp?
  238. Ampex 351 - Mic pre
  239. Another ground question
  240. for the life of me
  241. Front Panel Express finishes
  242. transformer spec
  243. diode bridge - 10000uF cap - diode tube - small cap - HV+
  244. passive components affected by magnetic fields?
  245. Help on Pentode Octal Phono Stage (POPS)
  246. Cascode gain. Did I do something wrong?
  247. Bad Tube in my "new" Hammond C2 Organ preamp? HELP w/ diagnosis!!
  248. Need tube data for 10Y
  249. Bending aluminum?
  250. Does anyone recognise this 12AU7?

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