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  1. 300b advice
  2. Designs on your noob, err, tube
  3. 7788 Triode Curves
  4. EL81/6CJ6 operating point
  5. Separate cathode resistors in push pull output
  6. C3m linestage
  7. Anyone know this 13E1 design...
  8. LTP w/ positive only supply
  9. 6V6 line preamp
  10. The 6P43P russian tube is a EL84 equivalent ??
  11. Ixys IXCP10M45s IC
  12. Help with hybrid mosfet valve amp
  13. Substitute for 6gw8 in Heathkit aa-32
  14. U-Follower: Output from Cathode or Plate?
  15. Getting rid of oscillations in the preamp
  16. has anyone used the 4-125A in SE amp ?
  17. line preamp using 6SN7 instead of 12AU7
  18. 3-pong conversion for Acoustic amplifier
  19. 6v6pp design
  20. CCS Plate Load
  21. All tube voltage doubler
  22. best value/performance ECC83 on market
  23. Help needed for my preamp
  24. 6H6p cascode differential driving 2A3 PP
  25. Best phono / line preamp
  26. Point to Point
  27. gain curve questions
  28. Questions concerning Aikido Line amp
  29. Partial cathode bypass to effect a treble boost.
  30. SE bass
  31. choke orientation
  32. Musical Fidelity X-PRE schematic
  33. Circuitmaker Spice question
  34. Trouble with a paraphase PI
  35. 27 pre PS question..
  36. 6AV5 g2 driver
  37. Calculate PSU output impedance?
  38. Output stage biasing, with the driver stage
  39. tube pedal plate voltages?
  40. grounding and 12AV6 diodes
  41. 6as7 Pse
  42. Looking for datasheets
  43. Ping Albert from Canada
  44. Old Tektronix booklet
  45. fisher 800c phase inverter adjustment 2
  46. Quick Transformer Question
  47. Power supply for Heathkit
  48. low-power output tube quality
  49. Conn Caprice organ
  50. Conservation of tubes
  51. Brimar EM87
  52. Tube sockets without the ceramic carrier.
  53. SET with tube-based CCS???
  54. fisher 800c modifications
  55. Bottlehead meet.
  56. Tie cathode to heater??
  57. anyone seen it tried like this?
  58. What do people think of the SETH 2A3 PP?
  59. Very high plate voltage EL34 amp
  60. How About Bridging SE
  61. Fisher 800c Has Odd Cathode Reading
  62. What part of DIY do you LOVE?
  63. Priboi tweakers ?
  64. 5751 and 12ax7
  65. LM317 + ceramic cap Q
  66. Derive Triode Curves from Pentode Curves?
  67. 7701 distortion device?
  68. Looking for the perfect giftshop
  69. 300b
  70. Choked ripple killer for SE?
  71. Dynaco Kits
  72. Positive bias for tube CF?
  73. need help
  74. Xindak attenuation for use with Leak Stereo 20, help please
  75. Series heaters = small problem?
  76. Recommend an EL84 tube for HIFI
  77. Help - need some info on this valve amp, please
  78. H. Olson's amps
  79. 12AT7 and the Simple EL84
  80. New K-12g only one channel working
  81. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  82. Rauland Borg 6L6 amp Need Info
  83. Hum Noise!
  84. Tube regulator for solidstate devices
  85. 6gu7 a sub for 6cg7/6fq7?
  86. obsession sd-600 300b mono block
  87. how do you know you need matched pair?
  88. Nobu Shishido's 805 SET interstage
  89. KT88SE, turning OPT
  90. New to tubes.
  91. OB with.......well, TL Audio's iTUBE :)
  92. Matched tubes required?
  93. GU-50 output trafo
  94. Are Hammond power transformers good enough ?
  95. Transformers.
  96. Quicky - magic eye between preamp and power stage
  97. HT to rectifier
  98. 6AV5 spice model
  99. Audio Research LS2 from 110V to 220V
  100. 6V6 PP power xfrmr
  101. I think I've damaged my amp
  102. Which brands apart wyetech uses Grounded grid?
  103. Parallel vs. series filament supply - or another filament idea
  104. 6146W Power Amplifier. Please help!
  105. grommes 511a mono tube amp/reciever
  106. First phono needs QC
  107. Meixing 3008ab problems
  108. protecting a VR tube
  109. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  110. help me i need schematic of Music angel PP el34
  111. How long to pre-heat filaments on 6SN7s?
  112. Amplifier Layout - Help & advice needed
  113. Any good places to shop for diy in beijing?
  114. White CF with 6SN7
  115. Cheapo Guitar Amp
  116. Power Amp
  117. is there any sound in a 30A5 / HL94 ?
  118. the hybrid one
  119. 4-1000a se subwoofer amp
  120. ear 834p output resistance
  121. Output transformer push pull
  122. Cheap Lunch?
  123. Source for Alps RK18 pot's..?
  124. Triode strapped tetrode
  125. ok, help me out here......
  126. Homebrew Toroid O/P Tranny
  127. GIBSON GA-79RVT Stereo Cab plans or dims
  128. strange noises from ECL86 amp
  129. Retouching knicks and scratches on chassis
  130. MingDa MC-7R noise and gain
  131. start-up sequence of Aikido preamp / SS power amp
  132. Driving a 6B4G with a single 5687/7044/E182CC?
  133. phono stage with different replay equalization?
  134. Lprimary variation in pair old opts
  135. 8417 triode connected tube data
  136. 5763 = El84?
  137. 5687 to 6L6 SE ?
  138. TubeCad Feedforward Shunt Regulator
  139. "12EA6" Pentode !
  140. Marshall EL34-100/100
  141. short-circuit rectifier EZ80 !
  142. Good radio tube:6AQ5/6005
  143. Replaced pulled tubes with a resistor?
  144. Choke input PSU, drawbacks?
  145. Heater PS alternative / Redux
  146. Gold or silver dress-up rings for tube amps.
  147. 50C5 conversion
  148. Sa-5.1 blow fuse
  149. Hum problem of preamp
  150. Chassis ground blows fuse
  151. 7193 (2c22) preamp buzz/hum
  152. Se Opt
  153. Does anhone use those switching power supply for the heaters?
  154. Tube Minidoc, featuring New York Noise
  155. Help Choosing A Sowter Trans For My DAC?
  156. fisher 800c clipping at ultra low volume
  157. "audiodigit" tubalizer & tubepre original schematic
  158. Dht Guitar Amps
  159. rating of series caps
  160. F704
  161. tube socket PCB library or dimensions
  162. motorboating
  163. 6AN8 Triode connection + EL 84 PP
  164. Please help amend 6AS7PP circuit
  165. El84 Pp
  166. 6V6 Ultralinear
  167. Dear Moderators
  168. 845 se
  169. Bell 2122-B integrated amp - tube suggestions
  170. Wirewound pot for Rk
  171. KT88/90 F2011 Schematic
  172. United Electric 967
  173. Scott 222c mods...?
  174. Switching supply for 300B filaments
  175. ECF80/6BL8
  176. 24v tube buffer & line stage schematic
  177. Vintage gear hunting
  178. Seperate PSU Transformers? Filament Supplys?
  179. 828 is better
  180. Hum on a choke loaded stage
  181. SE Transformer question
  182. Design question - How to make amp porn visible?
  183. Leak Stereo 20 - Johan's Square Wave Theory
  184. K-12G First Time Build
  185. Vishay vt52-55 resistors in a tube amp
  186. EL84 Push-Pull ccs bias
  187. Eight 807's in Push Pull?
  188. Working with Current O/P DAC Chips
  189. Unison research Preludio schematic
  190. Rewinding Power transformer
  191. Information needed on RCA SPECIAL RED TUBES
  192. Score?
  193. Herron phono
  194. tube preamp + SS power amp.
  195. Puzzler
  196. HI-Fi 6p13p
  197. Resistor values
  198. To chassies SE amp,PSU question
  199. Grounding & board Layout questions
  200. Look for a beefy driver tube.
  201. ECC81
  202. 5687 v.s. 6922 preamp/xover
  203. amorphous iron core good or not
  204. Pre-Amp
  205. submini tube preamp is a success
  206. Roll off frequency.
  207. Materials Technology for Electron Tubes by Walter H. Kohl
  208. Grundig TK 46 manual
  209. I'm anti-expensive audio parts but man, a good capacitor can make a difference
  210. How to determine a tube is shorted?
  211. Power supply problem
  212. SS power trans for tube experiments
  213. how to set output current on G Pimm's CCS circuit?
  214. Tube testing questions
  215. Push Pull Output Transformer wiring problem
  216. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  217. Stepped attenuators vs. Carbon pots
  218. hum/buzz with pot all the way up
  219. Cap and resistor types in guitar tube amp
  220. VacuTrace ... In Chicago?
  221. Lifesaver question on earthing
  222. Affordable, but good attenuators?
  223. Gu50 Set ?
  224. mounting an EL34 upside-down
  225. Direct coupled PP 2a3 amp - maths needed!!
  226. My 1st scratch build complete......
  227. Very Basic EL84 or EL34 DIY Amp
  228. Curcio Daniel Preamp Mods?
  229. Tube designs: 45 driving 45/2a3/300b?
  230. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  231. Marantz 8 B : Output Transformer
  232. has anyone used a fan on their project?
  233. Audio Research SP12 heater arrangement
  234. tv damper diodes
  235. volume pot quite close to a tube - is this okay?
  236. UTC s42 special series
  237. 6H30P preamp schematics
  238. Digital potentiometer corrupt tube amps
  239. Alternative filament supply for 01A line stage
  240. Lamination Size
  241. Yaqin MC10L and KT88
  242. Help me read tube data sheets
  243. Quick Question (Driving 6L6GC's)
  244. Cause for concern -- scorch mark in tube
  245. why not 10k pot
  246. Dynaco Stereo 70 Output Transformer
  247. 6CJ3 rectifier or 6D22S rectifier
  248. Back-to-Back trannies
  249. Spring Reverb transformer
  250. Hamfest in Toronto area next weekend

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