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  1. 6S3B-V Wire-Ended Single-Triode tube
  2. Anode stoppers
  3. Weird Quad II mains transformer help
  4. Mullard 5-20 parts list
  5. has anyone DIYed a Citation 2?
  6. Bogen/plexi conversion question
  7. Matched pair - different brands
  8. ERIC Mod 3460P Restore
  9. PV12 Preamplifier
  10. Grandma's old Capitol Console
  11. Music Angel
  12. What is the version of 45
  13. Heathkit potted power transformer question
  14. Thermionic Cooling?
  15. What have the finest sound, the PX4 or the 45 ?
  16. value of a cap between driver tube and output tubes
  17. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  18. Mini EL84 Amp Done
  19. Overcoming Miller
  20. Heathkit Schematic model AA-50 needed
  21. Help me choose please
  22. Mono Class A SE Schematics
  23. Irish DIY Meet.
  24. Sizing PP OPT
  25. Do SE transfomers get hot?
  26. Aikido Questions
  27. LTP with interstage trafo
  28. 6BQ5 Push-Pull amplifier
  29. Amplifier input
  30. C#@$ quality 6L6EH's
  31. Mains toroids appear to be great for audio
  32. High bias point.
  33. ebay amp
  34. GU 50 output modification
  35. 6C41Cs Class-A PP
  36. My First Big Amp
  37. sv572-10
  38. Stupid PAS-2 Pot Questions
  39. Old electronics articles
  40. UL Feedback
  41. who know fd23 and fd422 tubes?
  42. Laptop amplifier
  43. Thoughts Of Modifying My First Tube Amp.
  44. Quick question for Eli Duttman (or others!)
  45. Blackened GZ32 glass envelopes
  46. Are these vintage vacuum tubes suitable.....
  47. Tube XP8109-02?!
  48. peak current 300B heater with start up
  49. Microphonic phono preamplifier
  50. Pentode Plate Load
  51. what monoblocks to build?
  52. All tube direct box
  53. max b+ for 6V6
  54. What speakers to go with tubes ??
  55. Bluenote Koala Tube CD Player
  56. OPTs and power for bi-amping
  57. Old Diodes
  58. Father, I abused my Leak S/20
  59. 6688/E180F line stage?
  60. Variable feedback to enhance damping factor at low frequency
  61. Need assistance with picking the right Edcor audio transformer
  62. Critique my first design
  63. Biamping, phase of output?
  64. Ground star
  65. op-points for 27 pre...?
  66. Opinions/Experience of Toroidal valve amps
  67. hum, no way to get rid of it
  68. How to adjust my circuit for frequency response?
  69. Input Tubes?
  70. 6BG6 = 6L6GC with top cap - cheap!
  71. Maida Regulators Redux
  72. ground of DC bias supply
  73. does anyone the website for yaqin/mr. liung/music angel amps?
  74. plate load ccs ala gary p question
  75. Books for newbe
  76. 6AS7 OTL
  77. n00b phono preamp troubleshooting..
  78. TubelabSE - Anyone built?
  79. any example of SE designs using GM70?
  80. Shunt regulator question
  81. Any RH807 builders?
  82. Replacing multi-section caps with multiple caps?
  83. Recycle an Eico HFT-90 for a preamp
  84. EL84 PP output transformer for 6L6 PP class A
  85. Jensen PIO capacitor burn in
  86. toroid psu, weird results...
  87. Squeaky Noise in ARC Dual 75
  88. EL84 mod questions
  89. Measuring DC at preamp output
  90. Is Northern Electric the NEW W.E.?
  91. Burnt Woodside STA35 valve amp... Help!
  92. My tube preamplifier project
  93. Ponderings on hybrid 300B
  94. Maida Regulator Parts
  95. anyone familiar with the 211/vt4c circuit from Fi Primer?
  96. Calculating operating points of two DC stages
  97. Advice for retubing VTL Ichiban`s
  98. Need help
  99. Art Audio Kit on Common Ground Magazine
  100. Advice for retubing VTL Ichiban`s
  101. fisher 800c intermitant hum
  102. calling Yves....
  103. X10 Pre
  104. NEW KT66 - 6AU6 single ended
  105. mechanical hum
  106. Big valve preamp
  107. Question about biasing heater above cathode in a direct coupled circuit.
  108. center tapped choke inverter
  109. Which One Of These Tube Amps Should I Buy?
  110. Tube Info
  111. Circuit/Equipment Designer
  112. help needed with noise in phono preamp
  113. Pentode driver and IT?
  114. Plate Caps for 832A
  115. 300b advice
  116. Designs on your noob, err, tube
  117. 7788 Triode Curves
  118. EL81/6CJ6 operating point
  119. Separate cathode resistors in push pull output
  120. C3m linestage
  121. Anyone know this 13E1 design...
  122. LTP w/ positive only supply
  123. 6V6 line preamp
  124. The 6P43P russian tube is a EL84 equivalent ??
  125. Ixys IXCP10M45s IC
  126. Help with hybrid mosfet valve amp
  127. Substitute for 6gw8 in Heathkit aa-32
  128. U-Follower: Output from Cathode or Plate?
  129. Getting rid of oscillations in the preamp
  130. has anyone used the 4-125A in SE amp ?
  131. line preamp using 6SN7 instead of 12AU7
  132. 3-pong conversion for Acoustic amplifier
  133. 6v6pp design
  134. CCS Plate Load
  135. All tube voltage doubler
  136. best value/performance ECC83 on market
  137. Help needed for my preamp
  138. 6H6p cascode differential driving 2A3 PP
  139. Best phono / line preamp
  140. Point to Point
  141. gain curve questions
  142. Questions concerning Aikido Line amp
  143. Partial cathode bypass to effect a treble boost.
  144. SE bass
  145. choke orientation
  146. Musical Fidelity X-PRE schematic
  147. Circuitmaker Spice question
  148. Trouble with a paraphase PI
  149. 27 pre PS question..
  150. 6AV5 g2 driver
  151. Calculate PSU output impedance?
  152. Output stage biasing, with the driver stage
  153. tube pedal plate voltages?
  154. grounding and 12AV6 diodes
  155. 6as7 Pse
  156. Looking for datasheets
  157. Ping Albert from Canada
  158. Old Tektronix booklet
  159. fisher 800c phase inverter adjustment 2
  160. Quick Transformer Question
  161. Power supply for Heathkit
  162. low-power output tube quality
  163. Conn Caprice organ
  164. Conservation of tubes
  165. Brimar EM87
  166. Tube sockets without the ceramic carrier.
  167. SET with tube-based CCS???
  168. fisher 800c modifications
  169. Bottlehead meet.
  170. Tie cathode to heater??
  171. anyone seen it tried like this?
  172. What do people think of the SETH 2A3 PP?
  173. Very high plate voltage EL34 amp
  174. How About Bridging SE
  175. Fisher 800c Has Odd Cathode Reading
  176. What part of DIY do you LOVE?
  177. Priboi tweakers ?
  178. 5751 and 12ax7
  179. LM317 + ceramic cap Q
  180. Derive Triode Curves from Pentode Curves?
  181. 7701 distortion device?
  182. Looking for the perfect giftshop
  183. 300b
  184. Choked ripple killer for SE?
  185. Dynaco Kits
  186. Positive bias for tube CF?
  187. need help
  188. Xindak attenuation for use with Leak Stereo 20, help please
  189. Series heaters = small problem?
  190. Recommend an EL84 tube for HIFI
  191. Help - need some info on this valve amp, please
  192. H. Olson's amps
  193. 12AT7 and the Simple EL84
  194. New K-12g only one channel working
  195. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  196. Rauland Borg 6L6 amp Need Info
  197. Hum Noise!
  198. Tube regulator for solidstate devices
  199. 6gu7 a sub for 6cg7/6fq7?
  200. obsession sd-600 300b mono block
  201. how do you know you need matched pair?
  202. Nobu Shishido's 805 SET interstage
  203. KT88SE, turning OPT
  204. New to tubes.
  205. OB with.......well, TL Audio's iTUBE :)
  206. Matched tubes required?
  207. GU-50 output trafo
  208. Are Hammond power transformers good enough ?
  209. Transformers.
  210. Quicky - magic eye between preamp and power stage
  211. HT to rectifier
  212. 6AV5 spice model
  213. Audio Research LS2 from 110V to 220V
  214. 6V6 PP power xfrmr
  215. I think I've damaged my amp
  216. Which brands apart wyetech uses Grounded grid?
  217. Parallel vs. series filament supply - or another filament idea
  218. 6146W Power Amplifier. Please help!
  219. grommes 511a mono tube amp/reciever
  220. First phono needs QC
  221. Meixing 3008ab problems
  222. protecting a VR tube
  223. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  224. help me i need schematic of Music angel PP el34
  225. How long to pre-heat filaments on 6SN7s?
  226. Amplifier Layout - Help & advice needed
  227. Any good places to shop for diy in beijing?
  228. White CF with 6SN7
  229. Power Amp
  230. is there any sound in a 30A5 / HL94 ?
  231. the hybrid one
  232. 4-1000a se subwoofer amp
  233. ear 834p output resistance
  234. Output transformer push pull
  235. Cheap Lunch?
  236. Source for Alps RK18 pot's..?
  237. Triode strapped tetrode
  238. ok, help me out here......
  239. Homebrew Toroid O/P Tranny
  240. strange noises from ECL86 amp
  241. Retouching knicks and scratches on chassis
  242. MingDa MC-7R noise and gain
  243. start-up sequence of Aikido preamp / SS power amp
  244. Driving a 6B4G with a single 5687/7044/E182CC?
  245. phono stage with different replay equalization?
  246. Lprimary variation in pair old opts
  247. 8417 triode connected tube data
  248. 5763 = El84?
  249. 5687 to 6L6 SE ?
  250. TubeCad Feedforward Shunt Regulator

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