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

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