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  1. fisher 800c modifications
  2. Bottlehead meet.
  3. Tie cathode to heater??
  4. anyone seen it tried like this?
  5. What do people think of the SETH 2A3 PP?
  6. Very high plate voltage EL34 amp
  7. How About Bridging SE
  8. Fisher 800c Has Odd Cathode Reading
  9. What part of DIY do you LOVE?
  10. Priboi tweakers ?
  11. 5751 and 12ax7
  12. LM317 + ceramic cap Q
  13. Derive Triode Curves from Pentode Curves?
  14. 7701 distortion device?
  15. Looking for the perfect giftshop
  16. 300b
  17. Choked ripple killer for SE?
  18. Dynaco Kits
  19. Positive bias for tube CF?
  20. need help
  21. Xindak attenuation for use with Leak Stereo 20, help please
  22. Series heaters = small problem?
  23. Recommend an EL84 tube for HIFI
  24. Help - need some info on this valve amp, please
  25. H. Olson's amps
  26. 12AT7 and the Simple EL84
  27. New K-12g only one channel working
  28. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  29. Rauland Borg 6L6 amp Need Info
  30. Hum Noise!
  31. Tube regulator for solidstate devices
  32. 6gu7 a sub for 6cg7/6fq7?
  33. obsession sd-600 300b mono block
  34. how do you know you need matched pair?
  35. Nobu Shishido's 805 SET interstage
  36. KT88SE, turning OPT
  37. New to tubes.
  38. OB with.......well, TL Audio's iTUBE :)
  39. Matched tubes required?
  40. GU-50 output trafo
  41. Are Hammond power transformers good enough ?
  42. Transformers.
  43. Quicky - magic eye between preamp and power stage
  44. HT to rectifier
  45. 6AV5 spice model
  46. Audio Research LS2 from 110V to 220V
  47. 6V6 PP power xfrmr
  48. I think I've damaged my amp
  49. Which brands apart wyetech uses Grounded grid?
  50. Parallel vs. series filament supply - or another filament idea
  51. 6146W Power Amplifier. Please help!
  52. grommes 511a mono tube amp/reciever
  53. First phono needs QC
  54. Meixing 3008ab problems
  55. protecting a VR tube
  56. what's the purpose of pins 3 and 7 in an 8pin VR tube?
  57. help me i need schematic of Music angel PP el34
  58. How long to pre-heat filaments on 6SN7s?
  59. Amplifier Layout - Help & advice needed
  60. Any good places to shop for diy in beijing?
  61. White CF with 6SN7
  62. Cheapo Guitar Amp
  63. Power Amp
  64. is there any sound in a 30A5 / HL94 ?
  65. the hybrid one
  66. 4-1000a se subwoofer amp
  67. ear 834p output resistance
  68. Output transformer push pull
  69. Cheap Lunch?
  70. Source for Alps RK18 pot's..?
  71. Triode strapped tetrode
  72. ok, help me out here......
  73. Homebrew Toroid O/P Tranny
  74. GIBSON GA-79RVT Stereo Cab plans or dims
  75. strange noises from ECL86 amp
  76. Retouching knicks and scratches on chassis
  77. MingDa MC-7R noise and gain
  78. start-up sequence of Aikido preamp / SS power amp
  79. Driving a 6B4G with a single 5687/7044/E182CC?
  80. phono stage with different replay equalization?
  81. Lprimary variation in pair old opts
  82. 8417 triode connected tube data
  83. 5763 = El84?
  84. 5687 to 6L6 SE ?
  85. TubeCad Feedforward Shunt Regulator
  86. "12EA6" Pentode !
  87. Marshall EL34-100/100
  88. short-circuit rectifier EZ80 !
  89. Good radio tube:6AQ5/6005
  90. Replaced pulled tubes with a resistor?
  91. Choke input PSU, drawbacks?
  92. Heater PS alternative / Redux
  93. Gold or silver dress-up rings for tube amps.
  94. 50C5 conversion
  95. Sa-5.1 blow fuse
  96. Hum problem of preamp
  97. Chassis ground blows fuse
  98. 7193 (2c22) preamp buzz/hum
  99. Se Opt
  100. Does anhone use those switching power supply for the heaters?
  101. Tube Minidoc, featuring New York Noise
  102. Help Choosing A Sowter Trans For My DAC?
  103. fisher 800c clipping at ultra low volume
  104. "audiodigit" tubalizer & tubepre original schematic
  105. Dht Guitar Amps
  106. rating of series caps
  107. F704
  108. tube socket PCB library or dimensions
  109. motorboating
  110. 6AN8 Triode connection + EL 84 PP
  111. Please help amend 6AS7PP circuit
  112. El84 Pp
  113. 6V6 Ultralinear
  114. Dear Moderators
  115. 845 se
  116. Bell 2122-B integrated amp - tube suggestions
  117. Wirewound pot for Rk
  118. KT88/90 F2011 Schematic
  119. United Electric 967
  120. Scott 222c mods...?
  121. Switching supply for 300B filaments
  122. ECF80/6BL8
  123. 24v tube buffer & line stage schematic
  124. Vintage gear hunting
  125. Seperate PSU Transformers? Filament Supplys?
  126. 828 is better
  127. Hum on a choke loaded stage
  128. SE Transformer question
  129. Design question - How to make amp porn visible?
  130. Leak Stereo 20 - Johan's Square Wave Theory
  131. K-12G First Time Build
  132. Vishay vt52-55 resistors in a tube amp
  133. EL84 Push-Pull ccs bias
  134. Eight 807's in Push Pull?
  135. Working with Current O/P DAC Chips
  136. Unison research Preludio schematic
  137. Rewinding Power transformer
  138. Information needed on RCA SPECIAL RED TUBES
  139. Score?
  140. Herron phono
  141. tube preamp + SS power amp.
  142. Puzzler
  143. HI-Fi 6p13p
  144. Resistor values
  145. To chassies SE amp,PSU question
  146. Grounding & board Layout questions
  147. Look for a beefy driver tube.
  148. ECC81
  149. 5687 v.s. 6922 preamp/xover
  150. amorphous iron core good or not
  151. Pre-Amp
  152. submini tube preamp is a success
  153. Roll off frequency.
  154. Materials Technology for Electron Tubes by Walter H. Kohl
  155. Grundig TK 46 manual
  156. I'm anti-expensive audio parts but man, a good capacitor can make a difference
  157. How to determine a tube is shorted?
  158. Power supply problem
  159. SS power trans for tube experiments
  160. how to set output current on G Pimm's CCS circuit?
  161. Tube testing questions
  162. Push Pull Output Transformer wiring problem
  163. shunt regulator using VR tubes (with ccs like g pimm) and circuit load
  164. Stepped attenuators vs. Carbon pots
  165. hum/buzz with pot all the way up
  166. Cap and resistor types in guitar tube amp
  167. VacuTrace ... In Chicago?
  168. Lifesaver question on earthing
  169. Affordable, but good attenuators?
  170. Gu50 Set ?
  171. mounting an EL34 upside-down
  172. Direct coupled PP 2a3 amp - maths needed!!
  173. My 1st scratch build complete......
  174. Very Basic EL84 or EL34 DIY Amp
  175. Curcio Daniel Preamp Mods?
  176. Tube designs: 45 driving 45/2a3/300b?
  177. Adding secondary of output transformer into cathodes of output stage ? Eico ST-70
  178. Marantz 8 B : Output Transformer
  179. has anyone used a fan on their project?
  180. Audio Research SP12 heater arrangement
  181. tv damper diodes
  182. volume pot quite close to a tube - is this okay?
  183. UTC s42 special series
  184. 6H30P preamp schematics
  185. Digital potentiometer corrupt tube amps
  186. Alternative filament supply for 01A line stage
  187. Lamination Size
  188. Yaqin MC10L and KT88
  189. Help me read tube data sheets
  190. Quick Question (Driving 6L6GC's)
  191. Cause for concern -- scorch mark in tube
  192. why not 10k pot
  193. Dynaco Stereo 70 Output Transformer
  194. 6CJ3 rectifier or 6D22S rectifier
  195. Back-to-Back trannies
  196. Spring Reverb transformer
  197. Hamfest in Toronto area next weekend
  198. st70 bass response
  199. Triode "Champ" transformer v Edcor
  200. Low vs High aka Series vs Parallel Filaments
  201. Bogen monster MO200A schematic
  202. The Great Tempe Audio Shootout
  203. opinions on this p-p kt88
  204. Any XLR Tube Buffer Plans?
  205. Mystery transformers
  206. I need help with my next project
  207. A thought on Cathode feedback
  208. EL34 SE, direct coupled
  209. Ccs
  210. Hybrid amp: ECH83 + TDA2030A
  211. Leaving tube preamp always powered on.
  212. Variable 6922 heater to cathode voltage limit...?
  213. Is this risky?
  214. What to do with some WE tubes and others
  215. 6B4G SRPP
  216. pentode in triode mode SE vs a DHT SE like 2a3/300b
  217. dynakit decware bottlehead ... which to pick
  218. 6JC6 triode strapped?
  219. Searching for Raw Turrets
  220. Help.. EZ81 power supply diagram
  221. Ear 8l6
  222. Bogen H-30 guitar mod
  223. Voltage measurements from a blown 5AR4 vs. good 5Y3
  224. Sanity check on a 2A3 ultrapath with Pentode driver
  225. Star ground with dissimilar metals: concern?
  226. 5AR4 marked as 5V4GA?
  227. Calculating cathode bypass cap.
  228. Please need help! TUBE BIAS PROBE
  229. Aikido Phono Stage
  230. Using an El84 as a driver
  231. Transfromer value of this 300B circuit
  232. Chassis Layout & PS questions
  233. help needed for 1st DIY tube amp - Sakuma 845 SE
  234. Ideas for 4v filament triodes/pentodes
  235. Comments on Power Amp Viability
  236. Balanced active crossover advice
  237. The Tube Center
  238. Help1 with a 3 channel 2a3 amplifier
  239. volume control hum/noise
  240. PS choke magnetic induction
  241. Circlotron power supply question
  242. Autoformer as choke?
  243. E182CC
  244. Fender Hotrod Deville 212
  245. Grundig Fine Arts OTL Amplifier
  246. Damper diodes, 6ax4 and or 6w4?
  247. Knight 333 / Pioneer SX 34B info needed.
  248. Gargantuan Linestage Output Capacitors
  249. Quad II Restoration
  250. Help identifying a tube.

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