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  1. Replacement for single-winding OPT?
  2. Buzz in new amp...
  3. 48V B+ linestage
  4. Line-Stage Opinion Question
  5. Audio applications of sweep tubes and ratings
  6. Differences in structure between parafeed ad gapped OPTs
  7. Take a look and let me know what you think
  8. Printed circuit board designing?
  9. SimpleSE - Switches, Wire, IEC, Jacks
  10. KT90 why this ?
  11. Break in
  12. Choke Design - Basic Questions
  13. Is this a good interstage transformer?
  14. Best tubes for bass?
  15. Tube amps & MP3's
  16. TRIO 15Hz Oscilloscope CS-1560A
  17. Newbie Needs Help Choosing A Kit
  18. I need a negative supply rail--but how?
  19. Strange Hum
  20. VR Tubes
  21. Understanding plate loads
  22. How do you know if your preamp has inverted the phase?
  23. Bogen J130 PA to guitar amp?
  24. 6P1 Equivalent
  25. EL34 and KT88??? 6550?
  26. one stage DHT amp
  27. 6V6 Output?
  28. Lineup of four: Help me choose?! OPT for SE
  29. 6DJ8 / 6922 tube?
  30. bias pilot sa 260
  31. Using vintage OPTs as PSU chokes ?
  32. crystal palace driver stage by morgan jones
  33. Why Are 12A*7 Tubes So Bad?
  34. Mikael's KT-88 question
  35. OPT for PSE 6c33c tubes
  36. 24v aikido distortion
  37. ED8000 SE or Parafeed?
  38. GZ33 Rectifier drop?
  39. counterpoint sa11
  40. High voltage problem
  41. Wire gauges
  42. Simple headphones out
  43. Mull(ard)ing over valve choice...
  44. Turning on B+ without heaters with aikido
  45. New Project - Plitron 4006
  46. Where in Brisbane can I get a transformer for my Chinese amp
  47. Etching or silkscreening chassis?
  48. can please someone explain this to me?
  49. A VCCS tube amp, how?
  50. How to add a subwoofer out?
  51. Kind of cool check it out
  52. new opt for s5 k16ls?
  53. Wanted Arkay SP6, Knight 83YX768 schematics
  54. toggle switch for input selector
  55. Tube Rectifier protection
  56. Quick Q on Max G2/Screen Volts..
  57. Cathodyne follower? :)
  58. Real music power
  59. Tube info needed
  60. Petrol Head Amp
  61. Help Needed- Replacement Volume Pot For a Fisher KX100
  62. What are these caps good for?
  63. 300B Set amp some variations
  64. my second design circuit(hifhgain guitar amp)
  65. why p-p amp RL for class B is 1/2 the class A load?
  66. Is this circuit ok?
  67. JTM60 capacitor question
  68. Attenuators ------ Please Help
  69. Transformer Coupled Pentode Question
  70. no response needed 903@klipschorns
  71. KT88: EH vs. Winged C
  72. Voltage swing on a guitar pick-up?
  73. Anyone have experience with the China made tube amps
  74. tubelab SE 300b power transformer
  75. Toroidal transformer potting can
  76. 300B - Push Pull or PSE to drive a commercial speaker
  77. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  78. Choke Input Filter.
  79. Preamp comparisons
  80. Amperite delay relays
  81. Help with making a tube amp?
  82. Linestage suggestion for Kuei Yang Wang's phonostage
  83. Altec Lansing 440B preamplifier
  84. Modding a Bogen CHB100...
  85. Report: One-Electron PRC as input choke
  86. Phase Splitter Name
  87. 6ck4 sweetspot
  88. Mystery Ebay amp purchase
  89. Triode versus Pentode
  90. Supply, Full wave, choke on center tap?
  91. Ping SY
  92. Interstage Transformer Loading
  93. Tube Amplifier Kit?
  94. Easy inexpensive tube buffer ideas?
  95. Running tubes at their maximum dissipation.
  96. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  97. DHT drivers - shootout
  98. Dynaco MK IV
  99. Fender Bassman- AB165 capacitor toss up
  100. KT88 , Genalex or Chinese ? Help !!!
  101. output tubes for stereo 70
  102. 6H6P for Sonic Frontiers Line 2?
  103. Too much distortion
  104. Servo assisted CF LCR-filter
  105. 6v 5AR4?
  106. 845 Grid stopper value
  107. Chokes, sizing and ringing?
  108. Long tail 6sl7 for Dynaco stereo 70?
  109. Triode Fabrication Video
  110. Funny Hi-Fi quote
  111. 300B PP ph.split
  112. extend tube sockets, or tube "plugs"?
  113. Klipsch Promedia GMX A-2.1 + Decware Taboo
  114. So any ideas for a car type amp?
  115. Cathode Biasing a 6L6 quartet power stage
  116. Calling All Mullard 5-20 Aficionados
  117. Modelling a DC filament supply in PSU Designer II
  118. Guitar Preamp Tube combination
  119. 12AX7 Preamp NOOB Question
  120. Adding aux input on a tube console
  121. one safety question
  122. E1148,CV6-How do you distinguish the anode/grid caps?
  123. dual value motor run caps
  124. Strange DC choke behavior
  125. Subwoofer out question.
  126. Tube 6N3 use pre for ChipAmp
  127. Hammond 1650W
  128. separating PSU for preamp
  129. sca-35
  130. A 6.3V regulator delivering 2.8A...?
  131. 6K:8 25W SE OPT, now what tube should I use?
  132. EL84 fixed bias PP Triode
  133. Tube Amp Kit Suggestions
  134. TT21 Vs KT88
  135. One-Electron PRC chokes as PS input choke?
  136. Magnavox 135BB
  137. Is there much point in tube preamps? (This isn't a troll)
  138. How does one determine saturation point of triode or pentode
  139. Help - 807 Technical problem
  140. woooohooo!!! 3 working el84 SEs
  141. westinghouse model 80 radio - eval for parts?
  142. Bogen J130 PA schematic
  143. Marshall JMP-1 high voltage value ??
  144. Better Cap = Better Sound?
  145. Pilot SA 260 bias
  146. 12AX7 gain stage output impedance
  147. Small 1W hifi amp
  148. Tube Radio - What are G & F Terminals?
  149. Has anyone seen this?
  150. how would you Parallel a 12ua7 tube
  151. Tube mod a HT rcvr?
  152. how would i series a 12au7a
  153. does some have distortion schematics for 12au7a
  154. triode strapped tetrode
  155. 6F6G UL Amplifier
  156. Build a VT100?
  157. turrets for tube PC driver board needed
  158. Mikael Abdellah's kt88, (LOADLINES)
  159. piezo amp discussion on loudspeaker forum
  160. Balanced interconnect to differential amp - how would you do it?
  161. Ebay Tube Preamp Kit
  162. Kiwame resistors
  163. Mains isolation - would this work?
  164. 6CA7 Mikael Abdellah's KT88 SE amp?
  165. Tube heaters AC or DC?
  166. Question about system design with the K-12
  167. CCS on SE 2A3 cathode
  168. Saucepan Amplifier
  169. Rectifier query
  170. Fisher 400c
  171. Hum Problem
  172. Shanghai: please recommend some audio shops
  173. Calculating max Anode Voltage
  174. One thought about improved Single Ended amplifier
  175. low distortion sweep generator - not a PC
  176. Any articles on how to bias correctly
  177. Max dissp of EH 6sn7
  178. Switched Capacitor Impedance Converter
  179. Chinese Output transformer for 300B SET
  180. Is a VTVM useful?
  181. Permanent thread name proposal
  182. Loctal Rectifiers
  183. Silk Transformers
  184. Noob Power transformer for Tubelab SimpleSE
  185. Gain Q
  186. What cable between PSU and Amp?
  187. luxman mq 36 schematics
  188. Nonstandard tubes for audio? Quadrature grid chorus effect?
  189. Parts assortments sold with organizer
  190. Re-Gapping OPT
  191. I want to begin but I don't know how!!!
  192. Ultralinear with zener on the screen
  193. ReSEPP Design: 5 Tubes 4 Natural Sound
  194. Chinese Tube Amp?
  195. Ampex 351 - Mic pre
  196. Another ground question
  197. for the life of me
  198. Front Panel Express finishes
  199. transformer spec
  200. diode bridge - 10000uF cap - diode tube - small cap - HV+
  201. passive components affected by magnetic fields?
  202. Help on Pentode Octal Phono Stage (POPS)
  203. Cascode gain. Did I do something wrong?
  204. Bad Tube in my "new" Hammond C2 Organ preamp? HELP w/ diagnosis!!
  205. Need tube data for 10Y
  206. Bending aluminum?
  207. Does anyone recognise this 12AU7?
  208. Phase splitting--how does it work?
  209. Construction technique?
  210. function generator
  211. Ceramic or Magnetic with new preamp?
  212. Melos Triode 200 fuses
  213. Fantasia Disney amp
  214. Ella amplifier problems
  215. SE design questions before I start my project
  216. Single stage preamp
  217. Help me to identify unknown tube
  218. PSU Question...Full Wave Bridge
  219. 6as7g Se
  220. Music Angel Modification
  221. 6SL7 Phono Preamp
  222. Grounded Grid Preamp
  223. Formula question
  224. 6N9S different versions
  225. Stoetkit Amps
  226. PSUD question
  227. 6922 -- curing the ultrasonic RIAA blues
  228. Need Help Setting Heater Voltage
  229. Sub-Miniature Tube Amplifier
  230. Burned out power tube
  231. www.agora.lesina.org
  232. suggestions for a rectifier
  233. scott 222 recap issues
  234. Adcom integrated/tube amp project
  235. Auricaps - 400V vs 450V (SimpleSE)
  236. ratings of output transformer???
  237. Reverb insertion losses
  238. Class-g / class-h
  239. Cascading gain stages in a tube preamp
  240. OT impedances calculations: where's my mistake??
  241. phase splitting transformers
  242. Tubelab some simpleSE related Qs
  243. 6L6 PPP UL amp
  244. g2 driven tubes
  245. Selecting an IT impedance
  246. preamp get a hum when volume is at full or 80% is thier away to stop it??
  247. What can you replace the 12AU7A with???
  248. My 12AX7 zero negative feedback preamp, with measurement
  249. improving the Transcendentsound GGP preamp
  250. Check out my new Phono stage

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