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  1. best value/performance ECC83 on market
  2. Help needed for my preamp
  3. 6H6p cascode differential driving 2A3 PP
  4. Best phono / line preamp
  5. Point to Point
  6. gain curve questions
  7. Questions concerning Aikido Line amp
  8. Partial cathode bypass to effect a treble boost.
  9. SE bass
  10. choke orientation
  11. Musical Fidelity X-PRE schematic
  12. Circuitmaker Spice question
  13. Trouble with a paraphase PI
  14. 27 pre PS question..
  15. 6AV5 g2 driver
  16. Calculate PSU output impedance?
  17. Output stage biasing, with the driver stage
  18. tube pedal plate voltages?
  19. grounding and 12AV6 diodes
  20. 6as7 Pse
  21. Looking for datasheets
  22. Ping Albert from Canada
  23. Old Tektronix booklet
  24. fisher 800c phase inverter adjustment 2
  25. Quick Transformer Question
  26. Power supply for Heathkit
  27. low-power output tube quality
  28. Conn Caprice organ
  29. Conservation of tubes
  30. Brimar EM87
  31. Tube sockets without the ceramic carrier.
  32. SET with tube-based CCS???
  33. fisher 800c modifications
  34. Bottlehead meet.
  35. Tie cathode to heater??
  36. anyone seen it tried like this?
  37. What do people think of the SETH 2A3 PP?
  38. Very high plate voltage EL34 amp
  39. How About Bridging SE
  40. Fisher 800c Has Odd Cathode Reading
  41. What part of DIY do you LOVE?
  42. Priboi tweakers ?
  43. 5751 and 12ax7
  44. LM317 + ceramic cap Q
  45. Derive Triode Curves from Pentode Curves?
  46. 7701 distortion device?
  47. Looking for the perfect giftshop
  48. 300b
  49. Choked ripple killer for SE?
  50. Dynaco Kits
  51. Positive bias for tube CF?
  52. need help
  53. Xindak attenuation for use with Leak Stereo 20, help please
  54. Series heaters = small problem?
  55. Recommend an EL84 tube for HIFI
  56. Help - need some info on this valve amp, please
  57. H. Olson's amps
  58. 12AT7 and the Simple EL84
  59. New K-12g only one channel working
  60. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  61. Rauland Borg 6L6 amp Need Info
  62. Hum Noise!
  63. Tube regulator for solidstate devices
  64. 6gu7 a sub for 6cg7/6fq7?
  65. obsession sd-600 300b mono block
  66. how do you know you need matched pair?
  67. Nobu Shishido's 805 SET interstage
  68. KT88SE, turning OPT
  69. New to tubes.
  70. OB with.......well, TL Audio's iTUBE :)
  71. Matched tubes required?
  72. GU-50 output trafo
  73. Are Hammond power transformers good enough ?
  74. Transformers.
  75. Quicky - magic eye between preamp and power stage
  76. HT to rectifier
  77. 6AV5 spice model
  78. Audio Research LS2 from 110V to 220V
  79. 6V6 PP power xfrmr
  80. I think I've damaged my amp
  81. Which brands apart wyetech uses Grounded grid?
  82. Parallel vs. series filament supply - or another filament idea
  83. 6146W Power Amplifier. Please help!
  84. grommes 511a mono tube amp/reciever
  85. First phono needs QC
  86. Meixing 3008ab problems
  87. protecting a VR tube
  88. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  89. help me i need schematic of Music angel PP el34
  90. How long to pre-heat filaments on 6SN7s?
  91. Amplifier Layout - Help & advice needed
  92. Any good places to shop for diy in beijing?
  93. White CF with 6SN7
  94. Power Amp
  95. is there any sound in a 30A5 / HL94 ?
  96. the hybrid one
  97. 4-1000a se subwoofer amp
  98. ear 834p output resistance
  99. Output transformer push pull
  100. Cheap Lunch?
  101. Source for Alps RK18 pot's..?
  102. Triode strapped tetrode
  103. ok, help me out here......
  104. Homebrew Toroid O/P Tranny
  105. strange noises from ECL86 amp
  106. Retouching knicks and scratches on chassis
  107. MingDa MC-7R noise and gain
  108. start-up sequence of Aikido preamp / SS power amp
  109. Driving a 6B4G with a single 5687/7044/E182CC?
  110. phono stage with different replay equalization?
  111. Lprimary variation in pair old opts
  112. 8417 triode connected tube data
  113. 5763 = El84?
  114. 5687 to 6L6 SE ?
  115. TubeCad Feedforward Shunt Regulator
  116. "12EA6" Pentode !
  117. short-circuit rectifier EZ80 !
  118. Good radio tube:6AQ5/6005
  119. Replaced pulled tubes with a resistor?
  120. Choke input PSU, drawbacks?
  121. Heater PS alternative / Redux
  122. Gold or silver dress-up rings for tube amps.
  123. 50C5 conversion
  124. Sa-5.1 blow fuse
  125. Hum problem of preamp
  126. Chassis ground blows fuse
  127. 7193 (2c22) preamp buzz/hum
  128. Se Opt
  129. Does anhone use those switching power supply for the heaters?
  130. Tube Minidoc, featuring New York Noise
  131. Help Choosing A Sowter Trans For My DAC?
  132. fisher 800c clipping at ultra low volume
  133. "audiodigit" tubalizer & tubepre original schematic
  134. F704
  135. tube socket PCB library or dimensions
  136. motorboating
  137. 6AN8 Triode connection + EL 84 PP
  138. Please help amend 6AS7PP circuit
  139. El84 Pp
  140. 6V6 Ultralinear
  141. Dear Moderators
  142. 845 se
  143. Bell 2122-B integrated amp - tube suggestions
  144. Wirewound pot for Rk
  145. KT88/90 F2011 Schematic
  146. United Electric 967
  147. Scott 222c mods...?
  148. Switching supply for 300B filaments
  149. ECF80/6BL8
  150. 24v tube buffer & line stage schematic
  151. Vintage gear hunting
  152. Seperate PSU Transformers? Filament Supplys?
  153. 828 is better
  154. Hum on a choke loaded stage
  155. SE Transformer question
  156. Design question - How to make amp porn visible?
  157. Leak Stereo 20 - Johan's Square Wave Theory
  158. K-12G First Time Build
  159. Vishay vt52-55 resistors in a tube amp
  160. EL84 Push-Pull ccs bias
  161. Eight 807's in Push Pull?
  162. Working with Current O/P DAC Chips
  163. Unison research Preludio schematic
  164. Rewinding Power transformer
  165. Information needed on RCA SPECIAL RED TUBES
  166. Score?
  167. Herron phono
  168. tube preamp + SS power amp.
  169. Puzzler
  170. HI-Fi 6p13p
  171. Resistor values
  172. To chassies SE amp,PSU question
  173. Grounding & board Layout questions
  174. Look for a beefy driver tube.
  175. ECC81
  176. 5687 v.s. 6922 preamp/xover
  177. amorphous iron core good or not
  178. Pre-Amp
  179. submini tube preamp is a success
  180. Roll off frequency.
  181. Materials Technology for Electron Tubes by Walter H. Kohl
  182. Grundig TK 46 manual
  183. How to determine a tube is shorted?
  184. Power supply problem
  185. SS power trans for tube experiments
  186. how to set output current on G Pimm's CCS circuit?
  187. Tube testing questions
  188. Push Pull Output Transformer wiring problem
  189. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  190. Stepped attenuators vs. Carbon pots
  191. hum/buzz with pot all the way up
  192. VacuTrace ... In Chicago?
  193. Lifesaver question on earthing
  194. Affordable, but good attenuators?
  195. Gu50 Set ?
  196. mounting an EL34 upside-down
  197. Direct coupled PP 2a3 amp - maths needed!!
  198. My 1st scratch build complete......
  199. Very Basic EL84 or EL34 DIY Amp
  200. Curcio Daniel Preamp Mods?
  201. Tube designs: 45 driving 45/2a3/300b?
  202. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  203. Marantz 8 B : Output Transformer
  204. has anyone used a fan on their project?
  205. Audio Research SP12 heater arrangement
  206. tv damper diodes
  207. volume pot quite close to a tube - is this okay?
  208. UTC s42 special series
  209. 6H30P preamp schematics
  210. Digital potentiometer corrupt tube amps
  211. Alternative filament supply for 01A line stage
  212. Lamination Size
  213. Yaqin MC10L and KT88
  214. Help me read tube data sheets
  215. Quick Question (Driving 6L6GC's)
  216. Cause for concern -- scorch mark in tube
  217. why not 10k pot
  218. Dynaco Stereo 70 Output Transformer
  219. 6CJ3 rectifier or 6D22S rectifier
  220. Back-to-Back trannies
  221. Hamfest in Toronto area next weekend
  222. st70 bass response
  223. Triode "Champ" transformer v Edcor
  224. Low vs High aka Series vs Parallel Filaments
  225. Bogen monster MO200A schematic
  226. The Great Tempe Audio Shootout
  227. opinions on this p-p kt88
  228. Any XLR Tube Buffer Plans?
  229. Mystery transformers
  230. I need help with my next project
  231. A thought on Cathode feedback
  232. EL34 SE, direct coupled
  233. Ccs
  234. Hybrid amp: ECH83 + TDA2030A
  235. Leaving tube preamp always powered on.
  236. Variable 6922 heater to cathode voltage limit...?
  237. Is this risky?
  238. What to do with some WE tubes and others
  239. 6B4G SRPP
  240. pentode in triode mode SE vs a DHT SE like 2a3/300b
  241. dynakit decware bottlehead ... which to pick
  242. 6JC6 triode strapped?
  243. Help.. EZ81 power supply diagram
  244. Ear 8l6
  245. Voltage measurements from a blown 5AR4 vs. good 5Y3
  246. Sanity check on a 2A3 ultrapath with Pentode driver
  247. Star ground with dissimilar metals: concern?
  248. 5AR4 marked as 5V4GA?
  249. Calculating cathode bypass cap.
  250. Please need help! TUBE BIAS PROBE

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