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  1. Troubleshooting a PP EL34
  2. Hum problem, but on the tweeter (!?)
  3. isolating mounts for transformers
  4. guitar amp
  5. Help with 5692 line amp
  6. needs schematic SLF-1
  7. Which one with lower noise?
  8. 12A tube??
  9. E180F triode-strapped.
  10. Any comment for my new face for all diyer
  11. EL509 Alternatives for this amp
  12. questions about 01A / 483 pre-amp.
  13. Need help evaluating 2A3 transformer coupled designs
  14. Question for Joel (5755/6BQ5)
  15. Sweep tube amp...comments?
  16. How's about a Depletion Mode / Enhancement Mode CCCS
  17. Otl ?
  18. quicksilver 8417 hum
  19. Any Europeans here going to VSAC?
  20. When using a DC filament supply on a DHT...
  21. need single state preamp schmatic.
  22. Help with lowering filament winding voltage.
  23. some schematic questions by newbie help!
  24. Could a filament transformer be used as a grid choke?
  25. Joule electra LA150
  26. my first tube amp is running (sort of)- help kill the hum
  27. tube cd output advice
  28. DC to DC converters for tube preamplifier
  29. Cathode follower for a newbie ?
  30. Any info on a Trio AF-220 tuner?
  31. Inpol
  32. Quicksilver 8417
  33. Battery bias below EL84/6BQ5
  34. CCS loaded ECC99 calculations/questions
  35. J.E. Labs 2A3
  36. valve/miniature can hiss
  37. Photo Gallery
  38. Photo Discussion
  39. Looking for a cheap amp?
  40. Scrap or save?
  41. No Lima show
  42. 6DJ8 Tubes
  43. Amp Photos?
  44. Tekni-fi Tiny Tube RIIA stage
  45. srpp or m-follower?
  46. Elliptron Schematic
  47. 6d22s
  48. Vg=0 distortion
  49. class A S.E. OTL
  50. Power Tube 40?
  51. Designing for guys who like designing
  52. push pull 845
  53. tube rectifier and tda 1543
  54. amp project query
  55. tube matching fixture
  56. rec. for creative ideas for alternative tube amp chassis
  57. Who knows where to get 1200v Silicon Carbide Schottkys ?
  58. Bottlehead questions for a tube neophyte
  59. 6CM7 another tube in disguise?
  60. Mixing SE and push-pull
  61. Interstage resistor question
  62. 6L6GC/EL34 SE Stereo Design
  63. Heater power supply help
  64. 2a3 Se Amp With 5k Opt?
  65. 12B4A Linestage & PSU
  66. Info on VAA-70MKII? Please...
  67. AC Cap for DC use
  68. AC or DC???
  69. 12B4A as tube buffer?
  70. A question of bias...
  71. 6336A valves
  72. a better pentode for less!
  73. Troubleshooting a single ended EL84
  74. Transcendent Sound's T16 OTL
  75. Ear 834
  76. Guitar Tube Amp that uses KT88, 300B, 2A3, else
  77. Anyone ever owned/seen one of these?
  78. topology and PSRR
  79. A few questions
  80. Help Need the VSE SuperReg schematic!
  81. It plays music!!!!
  82. Anybody Has 6b4g Se Power?
  83. Bottlehead gear, buschhorns pics
  84. A new source for SE output transformers?
  85. help troubleshooting this diy pre-amp
  86. High Frequency Clipping in EL84 SE
  87. Basic Q on tube amp design
  88. Pentode cathode follower with regulated screen voltage?
  89. Starting my Bottlehead Paramour 2A3 build
  90. Seeking advice on my first shot in designing a 5842 DC'ed to 45
  91. Improving the Futterman
  92. Help with plate chokes
  93. OTL ver.6 Ciuffoly
  94. EL84 DPP and Full Range problem
  95. Where can I bought some Tubes in England?
  96. 12E1 tubes (help)
  97. Correct values for this schematic?
  98. Radford STA25
  99. A dumb question about coupling caps.
  100. "Mainframe" breadboard
  101. Velleman K4040 tube amp user feedback sought
  102. possible project for me, tube preamp.
  103. PSUD modelling of a filament supply
  104. Tube sound PC Mainboard
  105. 6C45PI contant current source
  106. Estimating choke size ?
  107. 6550 Users Beware...
  108. i finally got around to fixen it
  109. Going Balanced All The Way...
  110. Integrated Kit Thoughts?
  111. Any shows in the midwest or east coming up?
  112. Bottlehead meet in Houston pictures
  113. Very Cheap Valve preamplifier
  114. Figuring plate resistor values or tubes 101
  115. Preamp PSU questions
  116. Tube condition question
  117. Fender guitare tube
  118. Vacuum Tube Current Sink Drive???
  119. VSAC show
  120. 5687 line amp with 0D3 regulator
  121. Phono Stage Only?
  122. 15 W out of single SE KT88 ?
  123. Tube guitar amplifier circuit
  124. LS terminals to earth?
  125. Can anyone comment on the tektron 300b/2a3?
  126. Indy audio show
  127. Lifespan of old oil caps
  128. EQ Bypass Question
  129. Do these scope traces mean something is oscillating?
  130. Help With Flavors of Tubes
  131. beggar's tube amp
  132. Anybody know the whereabouts of Alan Kimmel?
  133. Audionote Conquest PCB Layout
  134. Looking for a Preamp
  135. Recommendations on a simple design?
  136. Line stage
  137. Need recomdations on a lineamp
  138. The world turned upside down
  139. Wavac MD300B
  140. PSpice model for Outputtranformers
  141. transformers
  142. schematics for the se 1000 audio innovations
  143. Conrad johnson topology
  144. HALOJOY - tube amp new bie - NEEDS HELP
  145. help with plate supply
  146. Grid current and direct coupling
  147. Tension on chassis
  148. silver corrosion
  149. Switching circuit help needed
  150. passive bi-amping parts
  151. DRD Amps
  152. AuriCap
  153. help with heater supply
  154. i've got these tubes here, and i don't know what to do with them
  155. Can anyone comment on the Telefuken v311
  156. Are these tubes worth annything?
  157. Asc/Angela vs Black Gate caps
  158. Low output impedance pre
  159. AudioCap PPT Theta for tube amps?
  160. Pcc88
  161. BG N/NX as tube output caps? possible?
  162. Is anyone here familiar with Butler Audio amplifiers?
  163. Telefunken smooth vs.ribbed plate 12AX7
  164. SIE chokes -- how much current
  165. 6GM8+MOSFET=car amp?
  166. Switched power supply?
  167. Plytron/Amplimo 4070-CFB OTF's
  168. How to test output transformers
  169. How much feedback is too much feedback
  170. Hey, I'm looking for some of that "tube sound"!
  171. Help with ccs
  172. plate characteristic curves help
  173. heater supply (xformer specs are 6.3V 2.5A) as supply for a power LED?
  174. KT88 Recomendation
  175. Quicksilver mini mono block amps?
  176. Conrad Johnson PV-7 noise
  177. Buzzing, could it be a ground loop?
  178. Cooling of Vacuum Tubes
  179. Ground loop problems - looking for opinions
  180. low voltage tubes (6GM8 and 12DL8)
  181. replacing diodes in my tubed-cd player
  182. .005pf capacitor anyone?
  183. does a choke have polarity?
  184. Grounding OPT secondaries?
  185. DRD: Simpler path to bliss?
  186. More From the Archives: 6W6 PP
  187. Spice model
  188. HFT-90 anyone rebuild one before?
  189. How do you use a 0D3 regulator?
  190. Tube manufacturer Trivia Question
  191. Idiots question on resistors.
  192. transformer mounting...
  193. Power supply help
  194. First Time Tube Amp
  195. Where can I find choke and cap for Dynaco MKIII?
  196. 6H30Pi & 6C45 Datasheet
  197. Center tapped choke loading
  198. first attempt at phono preamp, will this work?
  199. please give some comment for this preamp sch
  200. phono tube preamp?
  201. Counterpoint SA-12
  202. Frankenhouse
  203. Conrad Johnson Premier 10
  204. Preamp pictures.
  205. power amp using kt88
  206. More pictures as my project took a little leap forward
  207. why is the plate supply called B+?
  208. 40WTriode/60Watt Ultralinear amp
  209. Where can I get an amplifier kit
  210. Cheap valve amp kit... Anyone else thinking of having a try ?
  211. My first amp - a direct coupled 2A3
  212. Amp with 300B and ECC99 - your opinion?
  213. Sequence in which grounds are connected
  214. 6AS7 Idea
  215. Recommended primary output impedance for triode strapped EL34?
  216. JJ Tesla ECC99 as a driver for 300B-2A3
  217. More Output
  218. Class B designs with high fidelity?
  219. Very simple P-P output stage...will it work?
  220. Drawing schematics?
  221. Max power output chart for SE and PP
  222. tube/SS hybrid (low power)- need tube help
  223. The look of distortion.
  224. dynaco pas3 power supply
  225. Which RCA 2A3 to buy?
  226. Help with new amp ideas...
  227. -----testing Tubes----
  228. Motorized Pots
  229. Help Me Choose a Sensible Power Amp
  230. newbie everything...
  231. Plate load for 6SN7 gain stage?
  232. I really need help with this preamp!
  233. Tube Volume Knob "Power Soak"
  234. GEC date codes
  235. output impedence of CF? and a 6L6 question
  236. Plate curve calculations - am I doing this right?
  237. Parts source for M.Hubers P.S. regulator?
  238. is 6X5 a 6X4 in an octal form?
  239. finally finished computer amp!
  240. Output impedience ?
  241. Cheap valve pre-amp kit - comments please...
  242. Newbie Questions
  243. Anyone ever us a 6AF6G as a power indicator?
  244. Switchercad symbols
  245. preamp-amp tap - would this work
  246. Gibson GA-30 thinking about selling$$$
  247. PP output stages - different OPT primary Z
  248. HandWoundTransformers
  249. 300V PSU for 6sn7 tube output stage in dac
  250. First time building a tube amp: Help please

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