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  1. Input Tubes?
  2. 6BG6 = 6L6GC with top cap - cheap!
  3. Maida Regulators Redux
  4. ground of DC bias supply
  5. does anyone the website for yaqin/mr. liung/music angel amps?
  6. plate load ccs ala gary p question
  7. Books for newbe
  8. 6AS7 OTL
  9. n00b phono preamp troubleshooting..
  10. TubelabSE - Anyone built?
  11. any example of SE designs using GM70?
  12. Shunt regulator question
  13. Any RH807 builders?
  14. Replacing multi-section caps with multiple caps?
  15. Recycle an Eico HFT-90 for a preamp
  16. EL84 PP output transformer for 6L6 PP class A
  17. Jensen PIO capacitor burn in
  18. toroid psu, weird results...
  19. Squeaky Noise in ARC Dual 75
  20. EL84 mod questions
  21. Measuring DC at preamp output
  22. Is Northern Electric the NEW W.E.?
  23. Burnt Woodside STA35 valve amp... Help!
  24. My tube preamplifier project
  25. Ponderings on hybrid 300B
  26. Maida Regulator Parts
  27. anyone familiar with the 211/vt4c circuit from Fi Primer?
  28. Calculating operating points of two DC stages
  29. Advice for retubing VTL Ichiban`s
  30. Need help
  31. Art Audio Kit on Common Ground Magazine
  32. Advice for retubing VTL Ichiban`s
  33. fisher 800c intermitant hum
  34. calling Yves....
  35. X10 Pre
  36. NEW KT66 - 6AU6 single ended
  37. mechanical hum
  38. Big valve preamp
  39. Question about biasing heater above cathode in a direct coupled circuit.
  40. center tapped choke inverter
  41. Guitar tube pre DIY suggestions..?
  42. Which One Of These Tube Amps Should I Buy?
  43. Tube Info
  44. Circuit/Equipment Designer
  45. help needed with noise in phono preamp
  46. Pentode driver and IT?
  47. Plate Caps for 832A
  48. 300b advice
  49. Designs on your noob, err, tube
  50. 7788 Triode Curves
  51. EL81/6CJ6 operating point
  52. Separate cathode resistors in push pull output
  53. C3m linestage
  54. Anyone know this 13E1 design...
  55. LTP w/ positive only supply
  56. 6V6 line preamp
  57. The 6P43P russian tube is a EL84 equivalent ??
  58. Ixys IXCP10M45s IC
  59. Help with hybrid mosfet valve amp
  60. Substitute for 6gw8 in Heathkit aa-32
  61. U-Follower: Output from Cathode or Plate?
  62. Getting rid of oscillations in the preamp
  63. has anyone used the 4-125A in SE amp ?
  64. line preamp using 6SN7 instead of 12AU7
  65. 3-pong conversion for Acoustic amplifier
  66. 6v6pp design
  67. CCS Plate Load
  68. All tube voltage doubler
  69. best value/performance ECC83 on market
  70. Help needed for my preamp
  71. 6H6p cascode differential driving 2A3 PP
  72. Best phono / line preamp
  73. Point to Point
  74. gain curve questions
  75. Questions concerning Aikido Line amp
  76. Partial cathode bypass to effect a treble boost.
  77. SE bass
  78. choke orientation
  79. Musical Fidelity X-PRE schematic
  80. Circuitmaker Spice question
  81. Trouble with a paraphase PI
  82. 27 pre PS question..
  83. 6AV5 g2 driver
  84. Calculate PSU output impedance?
  85. Output stage biasing, with the driver stage
  86. tube pedal plate voltages?
  87. grounding and 12AV6 diodes
  88. 6as7 Pse
  89. Looking for datasheets
  90. Ping Albert from Canada
  91. Old Tektronix booklet
  92. fisher 800c phase inverter adjustment 2
  93. Quick Transformer Question
  94. Power supply for Heathkit
  95. low-power output tube quality
  96. Conn Caprice organ
  97. Conservation of tubes
  98. Brimar EM87
  99. Tube sockets without the ceramic carrier.
  100. SET with tube-based CCS???
  101. fisher 800c modifications
  102. Bottlehead meet.
  103. Tie cathode to heater??
  104. anyone seen it tried like this?
  105. What do people think of the SETH 2A3 PP?
  106. Very high plate voltage EL34 amp
  107. How About Bridging SE
  108. Fisher 800c Has Odd Cathode Reading
  109. What part of DIY do you LOVE?
  110. Priboi tweakers ?
  111. 5751 and 12ax7
  112. LM317 + ceramic cap Q
  113. Derive Triode Curves from Pentode Curves?
  114. 7701 distortion device?
  115. Looking for the perfect giftshop
  116. 300b
  117. Choked ripple killer for SE?
  118. Dynaco Kits
  119. Positive bias for tube CF?
  120. need help
  121. Xindak attenuation for use with Leak Stereo 20, help please
  122. Series heaters = small problem?
  123. Recommend an EL84 tube for HIFI
  124. Help - need some info on this valve amp, please
  125. H. Olson's amps
  126. 12AT7 and the Simple EL84
  127. New K-12g only one channel working
  128. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  129. Rauland Borg 6L6 amp Need Info
  130. Hum Noise!
  131. Tube regulator for solidstate devices
  132. 6gu7 a sub for 6cg7/6fq7?
  133. obsession sd-600 300b mono block
  134. how do you know you need matched pair?
  135. Nobu Shishido's 805 SET interstage
  136. KT88SE, turning OPT
  137. New to tubes.
  138. OB with.......well, TL Audio's iTUBE :)
  139. Matched tubes required?
  140. GU-50 output trafo
  141. Are Hammond power transformers good enough ?
  142. Transformers.
  143. Quicky - magic eye between preamp and power stage
  144. HT to rectifier
  145. 6AV5 spice model
  146. Audio Research LS2 from 110V to 220V
  147. 6V6 PP power xfrmr
  148. I think I've damaged my amp
  149. Which brands apart wyetech uses Grounded grid?
  150. Parallel vs. series filament supply - or another filament idea
  151. 6146W Power Amplifier. Please help!
  152. grommes 511a mono tube amp/reciever
  153. First phono needs QC
  154. Meixing 3008ab problems
  155. protecting a VR tube
  156. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  157. help me i need schematic of Music angel PP el34
  158. How long to pre-heat filaments on 6SN7s?
  159. Amplifier Layout - Help & advice needed
  160. Any good places to shop for diy in beijing?
  161. White CF with 6SN7
  162. Cheapo Guitar Amp
  163. Power Amp
  164. is there any sound in a 30A5 / HL94 ?
  165. the hybrid one
  166. 4-1000a se subwoofer amp
  167. ear 834p output resistance
  168. Output transformer push pull
  169. Cheap Lunch?
  170. Source for Alps RK18 pot's..?
  171. Triode strapped tetrode
  172. ok, help me out here......
  173. Homebrew Toroid O/P Tranny
  174. GIBSON GA-79RVT Stereo Cab plans or dims
  175. strange noises from ECL86 amp
  176. Retouching knicks and scratches on chassis
  177. MingDa MC-7R noise and gain
  178. start-up sequence of Aikido preamp / SS power amp
  179. Driving a 6B4G with a single 5687/7044/E182CC?
  180. phono stage with different replay equalization?
  181. Lprimary variation in pair old opts
  182. 8417 triode connected tube data
  183. 5763 = El84?
  184. 5687 to 6L6 SE ?
  185. TubeCad Feedforward Shunt Regulator
  186. "12EA6" Pentode !
  187. Marshall EL34-100/100
  188. short-circuit rectifier EZ80 !
  189. Good radio tube:6AQ5/6005
  190. Replaced pulled tubes with a resistor?
  191. Choke input PSU, drawbacks?
  192. Heater PS alternative / Redux
  193. Gold or silver dress-up rings for tube amps.
  194. 50C5 conversion
  195. Sa-5.1 blow fuse
  196. Hum problem of preamp
  197. Chassis ground blows fuse
  198. 7193 (2c22) preamp buzz/hum
  199. Se Opt
  200. Does anhone use those switching power supply for the heaters?
  201. Tube Minidoc, featuring New York Noise
  202. Help Choosing A Sowter Trans For My DAC?
  203. fisher 800c clipping at ultra low volume
  204. "audiodigit" tubalizer & tubepre original schematic
  205. Dht Guitar Amps
  206. rating of series caps
  207. F704
  208. tube socket PCB library or dimensions
  209. motorboating
  210. 6AN8 Triode connection + EL 84 PP
  211. Please help amend 6AS7PP circuit
  212. El84 Pp
  213. 6V6 Ultralinear
  214. Dear Moderators
  215. 845 se
  216. Bell 2122-B integrated amp - tube suggestions
  217. Wirewound pot for Rk
  218. KT88/90 F2011 Schematic
  219. United Electric 967
  220. Scott 222c mods...?
  221. Switching supply for 300B filaments
  222. ECF80/6BL8
  223. 24v tube buffer & line stage schematic
  224. Vintage gear hunting
  225. Seperate PSU Transformers? Filament Supplys?
  226. 828 is better
  227. Hum on a choke loaded stage
  228. SE Transformer question
  229. Design question - How to make amp porn visible?
  230. Leak Stereo 20 - Johan's Square Wave Theory
  231. K-12G First Time Build
  232. Vishay vt52-55 resistors in a tube amp
  233. EL84 Push-Pull ccs bias
  234. Eight 807's in Push Pull?
  235. Working with Current O/P DAC Chips
  236. Unison research Preludio schematic
  237. Rewinding Power transformer
  238. Information needed on RCA SPECIAL RED TUBES
  239. Score?
  240. Herron phono
  241. tube preamp + SS power amp.
  242. Puzzler
  243. HI-Fi 6p13p
  244. Resistor values
  245. To chassies SE amp,PSU question
  246. Grounding & board Layout questions
  247. Look for a beefy driver tube.
  248. ECC81
  249. 5687 v.s. 6922 preamp/xover
  250. amorphous iron core good or not

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