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  1. PP plate-choke?
  2. More Phase Splitting Questions
  3. Concertina sanity check
  4. Transformer Specs
  5. The Aikido or Moskido??
  6. KT88 PP suggestion
  7. Ultrapath line amp
  8. Gross loudspeaker cone movement when using tube amps.
  9. Pre-amp power iron advice??
  10. Class A 8417 Amp
  11. DHT output tubes and DC heating
  12. rock music and SE?
  13. Disadvantages of using Zobel and Series notch filter ?
  14. old days source
  15. Mu-follower vs common cathode w/- active load
  16. K40 or K42 Russian PIO: what would you use/recommend?
  17. CCS turning off prematurely?
  18. ESL amp again!
  19. calling Moray James, and others ..wav8 or 6BM8 schemtics--PP.
  20. Does anyone know the output transformer specs of the...
  21. SE EL84 project for my friend
  22. SE amplifier - How much power?
  23. what speakers do you use?
  24. A Tube amp for a Hostille Tube Enviornment
  25. practical choice for an amp
  26. Simple cathode CCS
  27. 2A3s in push pull; class A
  28. 5 VDC heater question
  29. Power transformer snerring.
  30. Subminiature Tube & Tripath Hybrid Integrated
  31. 211
  32. Which of these output tubes?
  33. High Voltage Heater info
  34. 6SL7 in place of a 12AX7?
  35. DHT Tubes
  36. Driving 6AQ5's
  37. schematic wanted
  38. 807s replacing 6L6GCs
  39. Shielded vs twisted pair in internal wiring
  40. tube basics: computing mu and transconductance
  41. Aluminium vs steel chassis
  42. Etf06 & 07
  43. FU 13 tubes
  44. Good Souinding Direct Replacement For 325 / OP 37
  45. how to wire 6.3VDC heater on a heater with center tap (12.6V series, 6.3V parallel)?
  46. The Russian 5U4M is a 5AR4 equivalent ?
  47. WE427A Cold Cathode Diode
  48. reversing polarity in regulated B+ and other question
  49. Anthem Integrated 1
  50. Hickok 800 settings
  51. Advice/Help - Cap upgrade
  52. question on old tube sockets
  53. fisher sa-16 very red tube and?
  54. pros/cons of a 845 VS 211
  55. Preamp Power and Voltage Output
  56. Anyone seen these 6L6GCs before?
  57. online transformer info for newbies
  58. High voltage pseudo-triode
  59. Yes, again: mains-powered KILLER amp without a power transformer.
  60. Quicksilver 300b monoblock (KT88 conversion)
  61. Output transformer (SE) - DIY
  62. is Gary Pimm still around?
  63. carbon composition - 2 types
  64. Input attenuation on Leak amp
  65. 101D Sockets
  66. PC86, '88 RF Amplifiers
  67. Jolida SJ-302A tube swap
  68. Inductance for tweeter OPT
  69. Help me.......What is the 6SN7 ???????
  70. high DCR secondary (power transformer)
  71. Transformer power formula Help???
  72. 2A3 OTL 800 Ohm Speaker
  73. Trying to find specs on transformer core material
  74. 12AX7 suggestions?
  75. power supply (cap input)
  76. is it safe to connect these secondaries in series?
  77. Peter Millett's Uniamp with KT88
  78. Mystery transformer
  79. Can I phase split like this?
  80. How to model psud2 using tube regulator?
  81. Choke-loaded 6C33C stage
  82. EL84 as both driver and output stage.
  83. Silvertone (Sears) stereo amp
  84. Chasing hum in a new tube amp
  85. Zenith K731 AM/FM radio audio random cracking sound in FM mode
  86. 6bx7gt Se Amp
  87. Beard P100 Bias Lights
  88. Metasonix TS-21 modulator
  89. help with diyparadiso schematics
  90. electrostatic shield - nice to have or recommended or doesn't matter?
  91. Simple method for 240V from 240V line
  92. Audiophile bibliophilia nervosa
  93. Help with amp layout
  94. Why triode Mk3 is louder than stock Mk3
  95. Seduction or Cornet for phono???
  96. Please review my 6AQ5 Amp
  97. 832A PP Amp LTP
  98. Checklist to observe before applying the mains
  99. C3g driving 2a3: Triode or pentode?
  100. psud2 question and Fi Primer's 211 circuit
  101. Jolida JD-301A & Jadis DPL
  102. Headphones with a Tube Amp
  103. 6S3B-V Wire-Ended Single-Triode tube
  104. Anode stoppers
  105. Weird Quad II mains transformer help
  106. Mullard 5-20 parts list
  107. has anyone DIYed a Citation 2?
  108. Bogen/plexi conversion question
  109. Matched pair - different brands
  110. ERIC Mod 3460P Restore
  111. PV12 Preamplifier
  112. Grandma's old Capitol Console
  113. Music Angel
  114. What is the version of 45
  115. Aikido for guitar?
  116. Heathkit potted power transformer question
  117. Thermionic Cooling?
  118. What have the finest sound, the PX4 or the 45 ?
  119. value of a cap between driver tube and output tubes
  120. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  121. Mini EL84 Amp Done
  122. Overcoming Miller
  123. Heathkit Schematic model AA-50 needed
  124. Help me choose please
  125. Mono Class A SE Schematics
  126. Irish DIY Meet.
  127. Sizing PP OPT
  128. 6BQ5/EL90 guitar amp schematics wanted
  129. Do SE transfomers get hot?
  130. Aikido Questions
  131. LTP with interstage trafo
  132. 6BQ5 Push-Pull amplifier
  133. Amplifier input
  134. C#@$ quality 6L6EH's
  135. Mains toroids appear to be great for audio
  136. High bias point.
  137. ebay amp
  138. GU 50 output modification
  139. 6C41Cs Class-A PP
  140. My First Big Amp
  141. sv572-10
  142. Stupid PAS-2 Pot Questions
  143. Old electronics articles
  144. UL Feedback
  145. who know fd23 and fd422 tubes?
  146. Laptop amplifier
  147. Thoughts Of Modifying My First Tube Amp.
  148. Quick question for Eli Duttman (or others!)
  149. Blackened GZ32 glass envelopes
  150. Are these vintage vacuum tubes suitable.....
  151. Tube XP8109-02?!
  152. peak current 300B heater with start up
  153. Microphonic phono preamplifier
  154. Pentode Plate Load
  155. what monoblocks to build?
  156. All tube direct box
  157. max b+ for 6V6
  158. What speakers to go with tubes ??
  159. Bluenote Koala Tube CD Player
  160. OPTs and power for bi-amping
  161. Quick And Dirty ~75W Guitar Amp
  162. Old Diodes
  163. Father, I abused my Leak S/20
  164. 6688/E180F line stage?
  165. Variable feedback to enhance damping factor at low frequency
  166. Need assistance with picking the right Edcor audio transformer
  167. Critique my first design
  168. Biamping, phase of output?
  169. Ground star
  170. op-points for 27 pre...?
  171. Opinions/Experience of Toroidal valve amps
  172. hum, no way to get rid of it
  173. How to adjust my circuit for frequency response?
  174. Input Tubes?
  175. 6BG6 = 6L6GC with top cap - cheap!
  176. Maida Regulators Redux
  177. ground of DC bias supply
  178. does anyone the website for yaqin/mr. liung/music angel amps?
  179. plate load ccs ala gary p question
  180. Books for newbe
  181. 6AS7 OTL
  182. n00b phono preamp troubleshooting..
  183. TubelabSE - Anyone built?
  184. any example of SE designs using GM70?
  185. Shunt regulator question
  186. Any RH807 builders?
  187. Replacing multi-section caps with multiple caps?
  188. Recycle an Eico HFT-90 for a preamp
  189. EL84 PP output transformer for 6L6 PP class A
  190. Jensen PIO capacitor burn in
  191. toroid psu, weird results...
  192. Squeaky Noise in ARC Dual 75
  193. EL84 mod questions
  194. Measuring DC at preamp output
  195. Is Northern Electric the NEW W.E.?
  196. Burnt Woodside STA35 valve amp... Help!
  197. My tube preamplifier project
  198. Ponderings on hybrid 300B
  199. Maida Regulator Parts
  200. anyone familiar with the 211/vt4c circuit from Fi Primer?
  201. Calculating operating points of two DC stages
  202. Advice for retubing VTL Ichiban`s
  203. Need help
  204. Art Audio Kit on Common Ground Magazine
  205. Advice for retubing VTL Ichiban`s
  206. fisher 800c intermitant hum
  207. calling Yves....
  208. X10 Pre
  209. NEW KT66 - 6AU6 single ended
  210. mechanical hum
  211. Big valve preamp
  212. Question about biasing heater above cathode in a direct coupled circuit.
  213. center tapped choke inverter
  214. Guitar tube pre DIY suggestions..?
  215. Which One Of These Tube Amps Should I Buy?
  216. Tube Info
  217. Circuit/Equipment Designer
  218. help needed with noise in phono preamp
  219. Pentode driver and IT?
  220. Plate Caps for 832A
  221. 300b advice
  222. Designs on your noob, err, tube
  223. 7788 Triode Curves
  224. EL81/6CJ6 operating point
  225. Separate cathode resistors in push pull output
  226. C3m linestage
  227. Anyone know this 13E1 design...
  228. LTP w/ positive only supply
  229. 6V6 line preamp
  230. The 6P43P russian tube is a EL84 equivalent ??
  231. Ixys IXCP10M45s IC
  232. Help with hybrid mosfet valve amp
  233. Substitute for 6gw8 in Heathkit aa-32
  234. U-Follower: Output from Cathode or Plate?
  235. Getting rid of oscillations in the preamp
  236. has anyone used the 4-125A in SE amp ?
  237. line preamp using 6SN7 instead of 12AU7
  238. 3-pong conversion for Acoustic amplifier
  239. 6v6pp design
  240. CCS Plate Load
  241. All tube voltage doubler
  242. best value/performance ECC83 on market
  243. Help needed for my preamp
  244. 6H6p cascode differential driving 2A3 PP
  245. Best phono / line preamp
  246. Point to Point
  247. gain curve questions
  248. Questions concerning Aikido Line amp
  249. Partial cathode bypass to effect a treble boost.
  250. SE bass

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