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  1. Biamping, phase of output?
  2. Ground star
  3. op-points for 27 pre...?
  4. Opinions/Experience of Toroidal valve amps
  5. hum, no way to get rid of it
  6. How to adjust my circuit for frequency response?
  7. Input Tubes?
  8. 6BG6 = 6L6GC with top cap - cheap!
  9. Maida Regulators Redux
  10. ground of DC bias supply
  11. does anyone the website for yaqin/mr. liung/music angel amps?
  12. plate load ccs ala gary p question
  13. Books for newbe
  14. 6AS7 OTL
  15. n00b phono preamp troubleshooting..
  16. TubelabSE - Anyone built?
  17. any example of SE designs using GM70?
  18. Shunt regulator question
  19. Any RH807 builders?
  20. Replacing multi-section caps with multiple caps?
  21. Recycle an Eico HFT-90 for a preamp
  22. EL84 PP output transformer for 6L6 PP class A
  23. Jensen PIO capacitor burn in
  24. toroid psu, weird results...
  25. Squeaky Noise in ARC Dual 75
  26. EL84 mod questions
  27. Measuring DC at preamp output
  28. Is Northern Electric the NEW W.E.?
  29. Burnt Woodside STA35 valve amp... Help!
  30. My tube preamplifier project
  31. Ponderings on hybrid 300B
  32. Maida Regulator Parts
  33. anyone familiar with the 211/vt4c circuit from Fi Primer?
  34. Calculating operating points of two DC stages
  35. Advice for retubing VTL Ichiban`s
  36. Need help
  37. Art Audio Kit on Common Ground Magazine
  38. Advice for retubing VTL Ichiban`s
  39. fisher 800c intermitant hum
  40. calling Yves....
  41. X10 Pre
  42. NEW KT66 - 6AU6 single ended
  43. mechanical hum
  44. Big valve preamp
  45. Question about biasing heater above cathode in a direct coupled circuit.
  46. center tapped choke inverter
  47. Guitar tube pre DIY suggestions..?
  48. Which One Of These Tube Amps Should I Buy?
  49. Tube Info
  50. Circuit/Equipment Designer
  51. help needed with noise in phono preamp
  52. Pentode driver and IT?
  53. Plate Caps for 832A
  54. 300b advice
  55. Designs on your noob, err, tube
  56. 7788 Triode Curves
  57. EL81/6CJ6 operating point
  58. Separate cathode resistors in push pull output
  59. C3m linestage
  60. Anyone know this 13E1 design...
  61. LTP w/ positive only supply
  62. 6V6 line preamp
  63. The 6P43P russian tube is a EL84 equivalent ??
  64. Ixys IXCP10M45s IC
  65. Help with hybrid mosfet valve amp
  66. Substitute for 6gw8 in Heathkit aa-32
  67. U-Follower: Output from Cathode or Plate?
  68. Getting rid of oscillations in the preamp
  69. has anyone used the 4-125A in SE amp ?
  70. line preamp using 6SN7 instead of 12AU7
  71. 3-pong conversion for Acoustic amplifier
  72. 6v6pp design
  73. CCS Plate Load
  74. All tube voltage doubler
  75. best value/performance ECC83 on market
  76. Help needed for my preamp
  77. 6H6p cascode differential driving 2A3 PP
  78. Best phono / line preamp
  79. Point to Point
  80. gain curve questions
  81. Questions concerning Aikido Line amp
  82. Partial cathode bypass to effect a treble boost.
  83. SE bass
  84. choke orientation
  85. Musical Fidelity X-PRE schematic
  86. Circuitmaker Spice question
  87. Trouble with a paraphase PI
  88. 27 pre PS question..
  89. 6AV5 g2 driver
  90. Calculate PSU output impedance?
  91. Output stage biasing, with the driver stage
  92. tube pedal plate voltages?
  93. grounding and 12AV6 diodes
  94. 6as7 Pse
  95. Looking for datasheets
  96. Ping Albert from Canada
  97. Old Tektronix booklet
  98. fisher 800c phase inverter adjustment 2
  99. Quick Transformer Question
  100. Power supply for Heathkit
  101. low-power output tube quality
  102. Conn Caprice organ
  103. Conservation of tubes
  104. Brimar EM87
  105. Tube sockets without the ceramic carrier.
  106. SET with tube-based CCS???
  107. fisher 800c modifications
  108. Bottlehead meet.
  109. Tie cathode to heater??
  110. anyone seen it tried like this?
  111. What do people think of the SETH 2A3 PP?
  112. Very high plate voltage EL34 amp
  113. How About Bridging SE
  114. Fisher 800c Has Odd Cathode Reading
  115. What part of DIY do you LOVE?
  116. Priboi tweakers ?
  117. 5751 and 12ax7
  118. LM317 + ceramic cap Q
  119. Derive Triode Curves from Pentode Curves?
  120. 7701 distortion device?
  121. Looking for the perfect giftshop
  122. 300b
  123. Choked ripple killer for SE?
  124. Dynaco Kits
  125. Positive bias for tube CF?
  126. need help
  127. Xindak attenuation for use with Leak Stereo 20, help please
  128. Series heaters = small problem?
  129. Recommend an EL84 tube for HIFI
  130. Help - need some info on this valve amp, please
  131. H. Olson's amps
  132. 12AT7 and the Simple EL84
  133. New K-12g only one channel working
  134. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  135. Rauland Borg 6L6 amp Need Info
  136. Hum Noise!
  137. Tube regulator for solidstate devices
  138. 6gu7 a sub for 6cg7/6fq7?
  139. obsession sd-600 300b mono block
  140. how do you know you need matched pair?
  141. Nobu Shishido's 805 SET interstage
  142. KT88SE, turning OPT
  143. New to tubes.
  144. OB with.......well, TL Audio's iTUBE :)
  145. Matched tubes required?
  146. GU-50 output trafo
  147. Are Hammond power transformers good enough ?
  148. Transformers.
  149. Quicky - magic eye between preamp and power stage
  150. HT to rectifier
  151. 6AV5 spice model
  152. Audio Research LS2 from 110V to 220V
  153. 6V6 PP power xfrmr
  154. I think I've damaged my amp
  155. Which brands apart wyetech uses Grounded grid?
  156. Parallel vs. series filament supply - or another filament idea
  157. 6146W Power Amplifier. Please help!
  158. grommes 511a mono tube amp/reciever
  159. First phono needs QC
  160. Meixing 3008ab problems
  161. protecting a VR tube
  162. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  163. help me i need schematic of Music angel PP el34
  164. How long to pre-heat filaments on 6SN7s?
  165. Amplifier Layout - Help & advice needed
  166. Any good places to shop for diy in beijing?
  167. White CF with 6SN7
  168. Cheapo Guitar Amp
  169. Power Amp
  170. is there any sound in a 30A5 / HL94 ?
  171. the hybrid one
  172. 4-1000a se subwoofer amp
  173. ear 834p output resistance
  174. Output transformer push pull
  175. Cheap Lunch?
  176. Source for Alps RK18 pot's..?
  177. Triode strapped tetrode
  178. ok, help me out here......
  179. Homebrew Toroid O/P Tranny
  180. GIBSON GA-79RVT Stereo Cab plans or dims
  181. strange noises from ECL86 amp
  182. Retouching knicks and scratches on chassis
  183. MingDa MC-7R noise and gain
  184. start-up sequence of Aikido preamp / SS power amp
  185. Driving a 6B4G with a single 5687/7044/E182CC?
  186. phono stage with different replay equalization?
  187. Lprimary variation in pair old opts
  188. 8417 triode connected tube data
  189. 5763 = El84?
  190. 5687 to 6L6 SE ?
  191. TubeCad Feedforward Shunt Regulator
  192. "12EA6" Pentode !
  193. Marshall EL34-100/100
  194. short-circuit rectifier EZ80 !
  195. Good radio tube:6AQ5/6005
  196. Replaced pulled tubes with a resistor?
  197. Choke input PSU, drawbacks?
  198. Heater PS alternative / Redux
  199. Gold or silver dress-up rings for tube amps.
  200. 50C5 conversion
  201. Sa-5.1 blow fuse
  202. Hum problem of preamp
  203. Chassis ground blows fuse
  204. 7193 (2c22) preamp buzz/hum
  205. Se Opt
  206. Does anhone use those switching power supply for the heaters?
  207. Tube Minidoc, featuring New York Noise
  208. Help Choosing A Sowter Trans For My DAC?
  209. fisher 800c clipping at ultra low volume
  210. "audiodigit" tubalizer & tubepre original schematic
  211. Dht Guitar Amps
  212. rating of series caps
  213. F704
  214. tube socket PCB library or dimensions
  215. motorboating
  216. 6AN8 Triode connection + EL 84 PP
  217. Please help amend 6AS7PP circuit
  218. El84 Pp
  219. 6V6 Ultralinear
  220. Dear Moderators
  221. 845 se
  222. Bell 2122-B integrated amp - tube suggestions
  223. Wirewound pot for Rk
  224. KT88/90 F2011 Schematic
  225. United Electric 967
  226. Scott 222c mods...?
  227. Switching supply for 300B filaments
  228. ECF80/6BL8
  229. 24v tube buffer & line stage schematic
  230. Vintage gear hunting
  231. Seperate PSU Transformers? Filament Supplys?
  232. 828 is better
  233. Hum on a choke loaded stage
  234. SE Transformer question
  235. Design question - How to make amp porn visible?
  236. Leak Stereo 20 - Johan's Square Wave Theory
  237. K-12G First Time Build
  238. Vishay vt52-55 resistors in a tube amp
  239. EL84 Push-Pull ccs bias
  240. Eight 807's in Push Pull?
  241. Working with Current O/P DAC Chips
  242. Unison research Preludio schematic
  243. Rewinding Power transformer
  244. Information needed on RCA SPECIAL RED TUBES
  245. Score?
  246. Herron phono
  247. tube preamp + SS power amp.
  248. Puzzler
  249. HI-Fi 6p13p
  250. Resistor values

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