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  1. high DCR secondary (power transformer)
  2. Transformer power formula Help???
  3. 2A3 OTL 800 Ohm Speaker
  4. Trying to find specs on transformer core material
  5. 12AX7 suggestions?
  6. power supply (cap input)
  7. is it safe to connect these secondaries in series?
  8. Peter Millett's Uniamp with KT88
  9. Mystery transformer
  10. Can I phase split like this?
  11. How to model psud2 using tube regulator?
  12. Choke-loaded 6C33C stage
  13. EL84 as both driver and output stage.
  14. Silvertone (Sears) stereo amp
  15. Chasing hum in a new tube amp
  16. Zenith K731 AM/FM radio audio random cracking sound in FM mode
  17. 6bx7gt Se Amp
  18. Beard P100 Bias Lights
  19. Metasonix TS-21 modulator
  20. help with diyparadiso schematics
  21. electrostatic shield - nice to have or recommended or doesn't matter?
  22. Simple method for 240V from 240V line
  23. Audiophile bibliophilia nervosa
  24. Help with amp layout
  25. Why triode Mk3 is louder than stock Mk3
  26. Seduction or Cornet for phono???
  27. Please review my 6AQ5 Amp
  28. 832A PP Amp LTP
  29. Checklist to observe before applying the mains
  30. C3g driving 2a3: Triode or pentode?
  31. psud2 question and Fi Primer's 211 circuit
  32. Jolida JD-301A & Jadis DPL
  33. Headphones with a Tube Amp
  34. 6S3B-V Wire-Ended Single-Triode tube
  35. Anode stoppers
  36. Weird Quad II mains transformer help
  37. Mullard 5-20 parts list
  38. has anyone DIYed a Citation 2?
  39. Bogen/plexi conversion question
  40. Matched pair - different brands
  41. ERIC Mod 3460P Restore
  42. PV12 Preamplifier
  43. Grandma's old Capitol Console
  44. Music Angel
  45. What is the version of 45
  46. Heathkit potted power transformer question
  47. Thermionic Cooling?
  48. What have the finest sound, the PX4 or the 45 ?
  49. value of a cap between driver tube and output tubes
  50. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  51. Mini EL84 Amp Done
  52. Overcoming Miller
  53. Heathkit Schematic model AA-50 needed
  54. Help me choose please
  55. Mono Class A SE Schematics
  56. Irish DIY Meet.
  57. Sizing PP OPT
  58. Do SE transfomers get hot?
  59. Aikido Questions
  60. LTP with interstage trafo
  61. 6BQ5 Push-Pull amplifier
  62. Amplifier input
  63. C#@$ quality 6L6EH's
  64. Mains toroids appear to be great for audio
  65. High bias point.
  66. ebay amp
  67. GU 50 output modification
  68. 6C41Cs Class-A PP
  69. My First Big Amp
  70. sv572-10
  71. Stupid PAS-2 Pot Questions
  72. Old electronics articles
  73. UL Feedback
  74. who know fd23 and fd422 tubes?
  75. Laptop amplifier
  76. Thoughts Of Modifying My First Tube Amp.
  77. Quick question for Eli Duttman (or others!)
  78. Blackened GZ32 glass envelopes
  79. Are these vintage vacuum tubes suitable.....
  80. Tube XP8109-02?!
  81. peak current 300B heater with start up
  82. Microphonic phono preamplifier
  83. Pentode Plate Load
  84. what monoblocks to build?
  85. All tube direct box
  86. max b+ for 6V6
  87. What speakers to go with tubes ??
  88. Bluenote Koala Tube CD Player
  89. OPTs and power for bi-amping
  90. Old Diodes
  91. Father, I abused my Leak S/20
  92. 6688/E180F line stage?
  93. Variable feedback to enhance damping factor at low frequency
  94. Need assistance with picking the right Edcor audio transformer
  95. Critique my first design
  96. Biamping, phase of output?
  97. Ground star
  98. op-points for 27 pre...?
  99. Opinions/Experience of Toroidal valve amps
  100. hum, no way to get rid of it
  101. How to adjust my circuit for frequency response?
  102. Input Tubes?
  103. 6BG6 = 6L6GC with top cap - cheap!
  104. Maida Regulators Redux
  105. ground of DC bias supply
  106. does anyone the website for yaqin/mr. liung/music angel amps?
  107. plate load ccs ala gary p question
  108. Books for newbe
  109. 6AS7 OTL
  110. n00b phono preamp troubleshooting..
  111. any example of SE designs using GM70?
  112. Shunt regulator question
  113. Any RH807 builders?
  114. Recycle an Eico HFT-90 for a preamp
  115. EL84 PP output transformer for 6L6 PP class A
  116. toroid psu, weird results...
  117. Squeaky Noise in ARC Dual 75
  118. EL84 mod questions
  119. Measuring DC at preamp output
  120. Is Northern Electric the NEW W.E.?
  121. Burnt Woodside STA35 valve amp... Help!
  122. My tube preamplifier project
  123. Ponderings on hybrid 300B
  124. Maida Regulator Parts
  125. anyone familiar with the 211/vt4c circuit from Fi Primer?
  126. Calculating operating points of two DC stages
  127. Advice for retubing VTL Ichiban`s
  128. Need help
  129. Art Audio Kit on Common Ground Magazine
  130. Advice for retubing VTL Ichiban`s
  131. fisher 800c intermitant hum
  132. calling Yves....
  133. X10 Pre
  134. NEW KT66 - 6AU6 single ended
  135. mechanical hum
  136. Big valve preamp
  137. Question about biasing heater above cathode in a direct coupled circuit.
  138. center tapped choke inverter
  139. Which One Of These Tube Amps Should I Buy?
  140. Tube Info
  141. Circuit/Equipment Designer
  142. help needed with noise in phono preamp
  143. Pentode driver and IT?
  144. Plate Caps for 832A
  145. 300b advice
  146. Designs on your noob, err, tube
  147. 7788 Triode Curves
  148. EL81/6CJ6 operating point
  149. Separate cathode resistors in push pull output
  150. C3m linestage
  151. Anyone know this 13E1 design...
  152. LTP w/ positive only supply
  153. 6V6 line preamp
  154. The 6P43P russian tube is a EL84 equivalent ??
  155. Ixys IXCP10M45s IC
  156. Help with hybrid mosfet valve amp
  157. Substitute for 6gw8 in Heathkit aa-32
  158. U-Follower: Output from Cathode or Plate?
  159. Getting rid of oscillations in the preamp
  160. has anyone used the 4-125A in SE amp ?
  161. line preamp using 6SN7 instead of 12AU7
  162. 3-pong conversion for Acoustic amplifier
  163. 6v6pp design
  164. CCS Plate Load
  165. All tube voltage doubler
  166. best value/performance ECC83 on market
  167. Help needed for my preamp
  168. 6H6p cascode differential driving 2A3 PP
  169. Best phono / line preamp
  170. Point to Point
  171. gain curve questions
  172. Questions concerning Aikido Line amp
  173. Partial cathode bypass to effect a treble boost.
  174. SE bass
  175. choke orientation
  176. Musical Fidelity X-PRE schematic
  177. Circuitmaker Spice question
  178. Trouble with a paraphase PI
  179. 27 pre PS question..
  180. 6AV5 g2 driver
  181. Calculate PSU output impedance?
  182. Output stage biasing, with the driver stage
  183. tube pedal plate voltages?
  184. grounding and 12AV6 diodes
  185. 6as7 Pse
  186. Looking for datasheets
  187. Ping Albert from Canada
  188. Old Tektronix booklet
  189. fisher 800c phase inverter adjustment 2
  190. Quick Transformer Question
  191. Power supply for Heathkit
  192. low-power output tube quality
  193. Conn Caprice organ
  194. Conservation of tubes
  195. Brimar EM87
  196. Tube sockets without the ceramic carrier.
  197. SET with tube-based CCS???
  198. fisher 800c modifications
  199. Bottlehead meet.
  200. Tie cathode to heater??
  201. anyone seen it tried like this?
  202. What do people think of the SETH 2A3 PP?
  203. Very high plate voltage EL34 amp
  204. How About Bridging SE
  205. Fisher 800c Has Odd Cathode Reading
  206. What part of DIY do you LOVE?
  207. Priboi tweakers ?
  208. 5751 and 12ax7
  209. LM317 + ceramic cap Q
  210. Derive Triode Curves from Pentode Curves?
  211. 7701 distortion device?
  212. Looking for the perfect giftshop
  213. 300b
  214. Choked ripple killer for SE?
  215. Dynaco Kits
  216. Positive bias for tube CF?
  217. need help
  218. Xindak attenuation for use with Leak Stereo 20, help please
  219. Series heaters = small problem?
  220. Recommend an EL84 tube for HIFI
  221. Help - need some info on this valve amp, please
  222. H. Olson's amps
  223. 12AT7 and the Simple EL84
  224. New K-12g only one channel working
  225. Kofi Annan in: "Kofi Makes a 300b DRD... and You Get to Help!"
  226. Rauland Borg 6L6 amp Need Info
  227. Hum Noise!
  228. Tube regulator for solidstate devices
  229. 6gu7 a sub for 6cg7/6fq7?
  230. obsession sd-600 300b mono block
  231. how do you know you need matched pair?
  232. Nobu Shishido's 805 SET interstage
  233. KT88SE, turning OPT
  234. New to tubes.
  235. OB with.......well, TL Audio's iTUBE :)
  236. Matched tubes required?
  237. GU-50 output trafo
  238. Are Hammond power transformers good enough ?
  239. Transformers.
  240. Quicky - magic eye between preamp and power stage
  241. HT to rectifier
  242. 6AV5 spice model
  243. Audio Research LS2 from 110V to 220V
  244. 6V6 PP power xfrmr
  245. I think I've damaged my amp
  246. Which brands apart wyetech uses Grounded grid?
  247. Parallel vs. series filament supply - or another filament idea
  248. 6146W Power Amplifier. Please help!
  249. grommes 511a mono tube amp/reciever
  250. First phono needs QC

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