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  1. Switched power supply?
  2. Plytron/Amplimo 4070-CFB OTF's
  3. How to test output transformers
  4. How much feedback is too much feedback
  5. Hey, I'm looking for some of that "tube sound"!
  6. Help with ccs
  7. plate characteristic curves help
  8. heater supply (xformer specs are 6.3V 2.5A) as supply for a power LED?
  9. KT88 Recomendation
  10. Quicksilver mini mono block amps?
  11. Conrad Johnson PV-7 noise
  12. Buzzing, could it be a ground loop?
  13. Cooling of Vacuum Tubes
  14. Ground loop problems - looking for opinions
  15. low voltage tubes (6GM8 and 12DL8)
  16. replacing diodes in my tubed-cd player
  17. .005pf capacitor anyone?
  18. does a choke have polarity?
  19. Grounding OPT secondaries?
  20. DRD: Simpler path to bliss?
  21. More From the Archives: 6W6 PP
  22. Spice model
  23. HFT-90 anyone rebuild one before?
  24. How do you use a 0D3 regulator?
  25. Tube manufacturer Trivia Question
  26. Idiots question on resistors.
  27. transformer mounting...
  28. Power supply help
  29. First Time Tube Amp
  30. Where can I find choke and cap for Dynaco MKIII?
  31. 6H30Pi & 6C45 Datasheet
  32. Center tapped choke loading
  33. first attempt at phono preamp, will this work?
  34. please give some comment for this preamp sch
  35. phono tube preamp?
  36. Counterpoint SA-12
  37. Frankenhouse
  38. Conrad Johnson Premier 10
  39. Preamp pictures.
  40. power amp using kt88
  41. More pictures as my project took a little leap forward
  42. why is the plate supply called B+?
  43. 40WTriode/60Watt Ultralinear amp
  44. Where can I get an amplifier kit
  45. Cheap valve amp kit... Anyone else thinking of having a try ?
  46. My first amp - a direct coupled 2A3
  47. Amp with 300B and ECC99 - your opinion?
  48. Sequence in which grounds are connected
  49. 6AS7 Idea
  50. Recommended primary output impedance for triode strapped EL34?
  51. JJ Tesla ECC99 as a driver for 300B-2A3
  52. More Output
  53. Class B designs with high fidelity?
  54. Very simple P-P output stage...will it work?
  55. Drawing schematics?
  56. Max power output chart for SE and PP
  57. tube/SS hybrid (low power)- need tube help
  58. The look of distortion.
  59. dynaco pas3 power supply
  60. Which RCA 2A3 to buy?
  61. Help with new amp ideas...
  62. -----testing Tubes----
  63. Motorized Pots
  64. Help Me Choose a Sensible Power Amp
  65. newbie everything...
  66. Plate load for 6SN7 gain stage?
  67. I really need help with this preamp!
  68. Tube Volume Knob "Power Soak"
  69. GEC date codes
  70. output impedence of CF? and a 6L6 question
  71. Plate curve calculations - am I doing this right?
  72. Parts source for M.Hubers P.S. regulator?
  73. is 6X5 a 6X4 in an octal form?
  74. finally finished computer amp!
  75. Output impedience ?
  76. Cheap valve pre-amp kit - comments please...
  77. Newbie Questions
  78. Anyone ever us a 6AF6G as a power indicator?
  79. Switchercad symbols
  80. preamp-amp tap - would this work
  81. Gibson GA-30 thinking about selling$$$
  82. PP output stages - different OPT primary Z
  83. HandWoundTransformers
  84. 300V PSU for 6sn7 tube output stage in dac
  85. First time building a tube amp: Help please
  86. A small question... maybe not
  87. Schematic help!
  88. Siemens 7308 Gold Pin
  89. PX25 operating points
  90. Who do you buy parts from?
  91. OTL preamplifier
  92. SF4007 vs 1n5408 rectifier diodes
  93. Old little audio transformers
  94. hum problems with my amp, still
  95. russian6c33b
  96. A 10W ultralinear amplifier with unique features.
  97. good or bad ?
  98. Tube SPL
  99. Recommend a kit for me!
  100. Seeking help about my 2A3 to 45 conversion
  101. DuncanAmps PSU Designer Question
  102. Starting on my first amp, have some questions
  103. 40 yrs old philips ag9016 se flea-power ?
  104. can I use OFC speaker cables
  105. Rectifier tubes
  106. From stereo to monoblocks
  107. Traductor Please !!!
  108. Point to point or use a PCB
  109. Good choices for a first tube amp?
  110. I need some help and answers!!
  111. nice cd player
  112. Advice for newbie
  113. tubegasim
  114. choke/transformer loaded Nuvistors
  115. preamp fie 6L6 PP power amp?
  116. preamp for buddys computer
  117. Building: Need Help
  118. Where to get tubes in Moskva
  119. rectifier tube 5u4g
  120. 5687 Line Stage
  121. Building tube amp in wooden box(es)
  122. Problems with OTP's
  123. How to add an HT bypass?
  124. DC filament supply AC ripple affect on overall hum
  125. 6021 opinions
  126. Strange but true...?
  127. Old russian tube radio
  128. SEPP design is it better then conventional PP
  129. Suitability of ECL84 tubes for audio
  130. How much capacitance for tube rectified PSUs?
  131. low cost pre amp plans
  132. Something new
  133. SE 6L6 amp (missile amp)
  134. Voice of Music 1448 - info?
  135. Where to buy powertube KT88 or 6550C ?
  136. Measuring amp output power
  137. help battery biasing 6dj8's
  138. information needed...Antique Sound USA PA-3 preamp
  139. TUBE ART 2A3 Black Plate
  140. Single section equivalent of 6SL7
  141. simple hybrid idea
  142. Idea about converting Musical Fidelity X-10 to a pre-amp
  143. 7812 TO220 regulator little help please
  144. Tube choice for tubed crossover
  145. Help me with my tube grocery list!
  146. Pics of my 6BM8 - The Gnat....
  147. going to build a 12au7 pre what do you think?
  148. Rectifier Sound
  149. 83 safety rules
  150. #47 DH pentode operated in triode
  151. My first cadge in over 1500 posts!
  152. Russian oil caps ?
  153. I wonder how this tube will sound...
  154. Ahhh.... no. I don't think I'll use *that* tube.
  155. WANTED oscillation!?! rf nuts please help
  156. Audio Innovations Classic 25 web page
  157. I need a 6A7, 88, and 89 tube.
  158. simple preamp with e288cc suggestions
  159. Pictures of my test-setup
  160. Easy ways of measuring output impedance of tube stages
  161. cheap tubes are just not worth it
  162. 2 OTs per channel?
  163. whats a good time for breaking in tubes
  164. Regulated vacuum tube rectifier cct.
  165. SEPP design any exposure?
  166. Cathode follower Class A output stage?
  167. Which OPT is fit to our taste.
  168. Morgan Jones tube amp and equalization
  169. Photoflash Caps for PSU
  170. Direct heated tubes with centre tap on filament
  171. Velleman K8020 Tube Preamp
  172. Bias Tap on Hammond Trannys
  173. High voltage umbilical and connectors / 1 box for PSU 1 box for amplifier in kit88
  174. Buzz, then blown fuses
  175. electrolytic vs non ellyt
  176. help with pinout
  177. Power Transformer Voltage
  178. Ideas for regulated B+ supply?
  179. How to record on a Grundig reel-reel??
  180. A choked Monkey, please!
  181. Any thoughts on this Philly Audio preamp design.
  182. Chokeless monkey
  183. Cool tube I came across... could it be used for audio?
  184. Output transformer Impedance
  185. Any suggestion for cheapest SET amplifier project
  186. Can anyone give more info on this amp?
  187. PSU for my linestage, will it work.
  188. Quality 6922 Tubes
  189. Night dreaming? / Middle of the night bloom
  190. 6C45 PP IT 845SE amp.
  191. Avalon VT747SP schematic needed
  192. PreampPSU need help
  193. How much would you pay?
  194. Latest 6B4G PP and some thoughts about signal return paths...
  195. Stereo SRPP - one dual triode tube per channel, or...?
  196. Found an old tube at school
  197. Help with hum small hum problem...
  198. No bang, no flash, just music!
  199. Negative Feedback
  200. Vaa100es Mkii (please Help!!!)
  201. Can all tubes be heated with DC?
  202. I've put loadlines aside for a while...
  203. A new masterpiece to add to the family...
  204. schematic for for McINTOSH C30 preamp
  205. Krohn Hite amps, are they any good?
  206. Could someone please help me understand this equation?
  207. Small amp to drive Ribbon Tweeters
  208. This work guyz...
  209. That's it! I've had it!
  210. 12BH7 is microphonic
  211. Relpacing power supply caps in Quad 2
  212. looking for 'nice' warm'euphoric tube sound
  213. 5AR4 & 5U4G Rectifier Questions...
  214. Anyone seen the JJ 2A3?!
  215. A plug'n'play EL34/KT66/6B4 SE amp
  216. Good old Fender Twin Reverb
  217. AC Motor Start Caps for PS use
  218. Parafeed Circuit
  219. Thoughts on output PP trannies
  220. European TV damper diodes..
  221. the case of the arcing tube
  222. Have any of you intentionally rolled off the bass in your amplifiers?
  223. schematic for Audio Research SP11?
  224. Svetlana Sales agents in Russia
  225. Dodd Audio Dodd Amp
  226. help with schematic
  227. Western Electric
  228. 6C45P Anode choke or resistor?
  229. The National Vintage Communication Fair
  230. ASL wave 8 monoblocks
  231. 6V6 Guitar Amp
  232. Tube failure
  233. Power Supply Question
  234. Audio Innovations Series 300
  235. Audio Research D90 - Info
  236. Audio Note's Kit One done in point-to-point wiring
  237. Simple PSU question
  238. Getting my feet wet with PSUD
  239. teflon 23ga. hookup/signal wire?...
  240. a simple preamp with 5687 tubes
  241. Oscillations-total newbie question
  242. Quad volume control?
  243. Berman 76 preamp schematics
  244. Schematic + PCB
  245. KT77 or EL34
  246. How to Install UX4 Socket without Punch
  247. michaelson & austin tva 10
  248. High end Tube mono amp
  249. SPICE modeling
  250. Strange phase splitter design !?!?

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