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  1. Simple method for 240V from 240V line
  2. Audiophile bibliophilia nervosa
  3. Help with amp layout
  4. Why triode Mk3 is louder than stock Mk3
  5. Seduction or Cornet for phono???
  6. Please review my 6AQ5 Amp
  7. 832A PP Amp LTP
  8. Checklist to observe before applying the mains
  9. C3g driving 2a3: Triode or pentode?
  10. psud2 question and Fi Primer's 211 circuit
  11. Jolida JD-301A & Jadis DPL
  12. Headphones with a Tube Amp
  13. 6S3B-V Wire-Ended Single-Triode tube
  14. Anode stoppers
  15. Weird Quad II mains transformer help
  16. Mullard 5-20 parts list
  17. has anyone DIYed a Citation 2?
  18. Bogen/plexi conversion question
  19. Matched pair - different brands
  20. ERIC Mod 3460P Restore
  21. PV12 Preamplifier
  22. Grandma's old Capitol Console
  23. Music Angel
  24. What is the version of 45
  25. Aikido for guitar?
  26. Heathkit potted power transformer question
  27. Thermionic Cooling?
  28. What have the finest sound, the PX4 or the 45 ?
  29. value of a cap between driver tube and output tubes
  30. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  31. Mini EL84 Amp Done
  32. Overcoming Miller
  33. Heathkit Schematic model AA-50 needed
  34. Help me choose please
  35. Mono Class A SE Schematics
  36. Irish DIY Meet.
  37. Sizing PP OPT
  38. 6BQ5/EL90 guitar amp schematics wanted
  39. Do SE transfomers get hot?
  40. Aikido Questions
  41. LTP with interstage trafo
  42. 6BQ5 Push-Pull amplifier
  43. Amplifier input
  44. C#@$ quality 6L6EH's
  45. Mains toroids appear to be great for audio
  46. High bias point.
  47. ebay amp
  48. GU 50 output modification
  49. 6C41Cs Class-A PP
  50. My First Big Amp
  51. sv572-10
  52. Stupid PAS-2 Pot Questions
  53. Old electronics articles
  54. UL Feedback
  55. who know fd23 and fd422 tubes?
  56. Laptop amplifier
  57. Thoughts Of Modifying My First Tube Amp.
  58. Quick question for Eli Duttman (or others!)
  59. Blackened GZ32 glass envelopes
  60. Are these vintage vacuum tubes suitable.....
  61. Tube XP8109-02?!
  62. peak current 300B heater with start up
  63. Microphonic phono preamplifier
  64. Pentode Plate Load
  65. what monoblocks to build?
  66. All tube direct box
  67. max b+ for 6V6
  68. What speakers to go with tubes ??
  69. Bluenote Koala Tube CD Player
  70. OPTs and power for bi-amping
  71. Quick And Dirty ~75W Guitar Amp
  72. Old Diodes
  73. Father, I abused my Leak S/20
  74. 6688/E180F line stage?
  75. Variable feedback to enhance damping factor at low frequency
  76. Need assistance with picking the right Edcor audio transformer
  77. Critique my first design
  78. Biamping, phase of output?
  79. Ground star
  80. op-points for 27 pre...?
  81. Opinions/Experience of Toroidal valve amps
  82. hum, no way to get rid of it
  83. How to adjust my circuit for frequency response?
  84. Input Tubes?
  85. 6BG6 = 6L6GC with top cap - cheap!
  86. Maida Regulators Redux
  87. ground of DC bias supply
  88. does anyone the website for yaqin/mr. liung/music angel amps?
  89. plate load ccs ala gary p question
  90. Books for newbe
  91. 6AS7 OTL
  92. n00b phono preamp troubleshooting..
  93. TubelabSE - Anyone built?
  94. any example of SE designs using GM70?
  95. Shunt regulator question
  96. Any RH807 builders?
  97. Replacing multi-section caps with multiple caps?
  98. Recycle an Eico HFT-90 for a preamp
  99. EL84 PP output transformer for 6L6 PP class A
  100. Jensen PIO capacitor burn in
  101. toroid psu, weird results...
  102. Squeaky Noise in ARC Dual 75
  103. EL84 mod questions
  104. Measuring DC at preamp output
  105. Is Northern Electric the NEW W.E.?
  106. Burnt Woodside STA35 valve amp... Help!
  107. My tube preamplifier project
  108. Ponderings on hybrid 300B
  109. Maida Regulator Parts
  110. anyone familiar with the 211/vt4c circuit from Fi Primer?
  111. Calculating operating points of two DC stages
  112. Advice for retubing VTL Ichiban`s
  113. Need help
  114. Art Audio Kit on Common Ground Magazine
  115. Advice for retubing VTL Ichiban`s
  116. fisher 800c intermitant hum
  117. calling Yves....
  118. X10 Pre
  119. NEW KT66 - 6AU6 single ended
  120. mechanical hum
  121. Big valve preamp
  122. Question about biasing heater above cathode in a direct coupled circuit.
  123. center tapped choke inverter
  124. Guitar tube pre DIY suggestions..?
  125. Which One Of These Tube Amps Should I Buy?
  126. Tube Info
  127. Circuit/Equipment Designer
  128. help needed with noise in phono preamp
  129. Pentode driver and IT?
  130. Plate Caps for 832A
  131. 300b advice
  132. Designs on your noob, err, tube
  133. 7788 Triode Curves
  134. EL81/6CJ6 operating point
  135. Separate cathode resistors in push pull output
  136. C3m linestage
  137. Anyone know this 13E1 design...
  138. LTP w/ positive only supply
  139. 6V6 line preamp
  140. The 6P43P russian tube is a EL84 equivalent ??
  141. Ixys IXCP10M45s IC
  142. Help with hybrid mosfet valve amp
  143. Substitute for 6gw8 in Heathkit aa-32
  144. U-Follower: Output from Cathode or Plate?
  145. Getting rid of oscillations in the preamp
  146. has anyone used the 4-125A in SE amp ?
  147. line preamp using 6SN7 instead of 12AU7
  148. 3-pong conversion for Acoustic amplifier
  149. 6v6pp design
  150. CCS Plate Load
  151. All tube voltage doubler
  152. best value/performance ECC83 on market
  153. Help needed for my preamp
  154. 6H6p cascode differential driving 2A3 PP
  155. Best phono / line preamp
  156. Point to Point
  157. gain curve questions
  158. Questions concerning Aikido Line amp
  159. Partial cathode bypass to effect a treble boost.
  160. SE bass
  161. choke orientation
  162. Musical Fidelity X-PRE schematic
  163. Circuitmaker Spice question
  164. Trouble with a paraphase PI
  165. 27 pre PS question..
  166. 6AV5 g2 driver
  167. Calculate PSU output impedance?
  168. Output stage biasing, with the driver stage
  169. tube pedal plate voltages?
  170. grounding and 12AV6 diodes
  171. 6as7 Pse
  172. Looking for datasheets
  173. Ping Albert from Canada
  174. Old Tektronix booklet
  175. fisher 800c phase inverter adjustment 2
  176. Quick Transformer Question
  177. Power supply for Heathkit
  178. low-power output tube quality
  179. Conn Caprice organ
  180. Conservation of tubes
  181. Brimar EM87
  182. Tube sockets without the ceramic carrier.
  183. SET with tube-based CCS???
  184. fisher 800c modifications
  185. Bottlehead meet.
  186. Tie cathode to heater??
  187. anyone seen it tried like this?
  188. What do people think of the SETH 2A3 PP?
  189. Very high plate voltage EL34 amp
  190. How About Bridging SE
  191. Fisher 800c Has Odd Cathode Reading
  192. What part of DIY do you LOVE?
  193. Priboi tweakers ?
  194. 5751 and 12ax7
  195. LM317 + ceramic cap Q
  196. Derive Triode Curves from Pentode Curves?
  197. 7701 distortion device?
  198. Looking for the perfect giftshop
  199. 300b
  200. Choked ripple killer for SE?
  201. Dynaco Kits
  202. Positive bias for tube CF?
  203. need help
  204. Xindak attenuation for use with Leak Stereo 20, help please
  205. Series heaters = small problem?
  206. Recommend an EL84 tube for HIFI
  207. Help - need some info on this valve amp, please
  208. H. Olson's amps
  209. 12AT7 and the Simple EL84
  210. New K-12g only one channel working
  211. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  212. Rauland Borg 6L6 amp Need Info
  213. Hum Noise!
  214. Tube regulator for solidstate devices
  215. 6gu7 a sub for 6cg7/6fq7?
  216. obsession sd-600 300b mono block
  217. how do you know you need matched pair?
  218. Nobu Shishido's 805 SET interstage
  219. KT88SE, turning OPT
  220. New to tubes.
  221. OB with.......well, TL Audio's iTUBE :)
  222. Matched tubes required?
  223. GU-50 output trafo
  224. Are Hammond power transformers good enough ?
  225. Transformers.
  226. Quicky - magic eye between preamp and power stage
  227. HT to rectifier
  228. 6AV5 spice model
  229. Audio Research LS2 from 110V to 220V
  230. 6V6 PP power xfrmr
  231. I think I've damaged my amp
  232. Which brands apart wyetech uses Grounded grid?
  233. Parallel vs. series filament supply - or another filament idea
  234. 6146W Power Amplifier. Please help!
  235. grommes 511a mono tube amp/reciever
  236. First phono needs QC
  237. Meixing 3008ab problems
  238. protecting a VR tube
  239. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  240. help me i need schematic of Music angel PP el34
  241. How long to pre-heat filaments on 6SN7s?
  242. Amplifier Layout - Help & advice needed
  243. Any good places to shop for diy in beijing?
  244. White CF with 6SN7
  245. Cheapo Guitar Amp
  246. Power Amp
  247. is there any sound in a 30A5 / HL94 ?
  248. the hybrid one
  249. 4-1000a se subwoofer amp
  250. ear 834p output resistance

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