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  1. ED-8000 set amp
  2. Hitachi v-202 scope
  3. Cheap and nice looking SE OPT
  4. How much difference 0.22 vs 0.33 cap?
  5. Tubelab SimpleSE
  6. 813 final design?
  7. HPHV regulator, designed by Emile Sprenger
  8. Counterpoint tube amps
  9. SS or tube voltage amplifying stages in an amp with tube output?
  10. 24V Aikido --> 6GM8 with Buffer
  11. Motorboating in Dynaco ST-70
  12. Does such a tube exist?
  13. Noisy PSU?
  14. Bell & Howell amp
  15. Valve Amp with soild state front end
  16. Controlling transient response
  17. Transcendar Budget SE Transformers
  18. Opinion on New Sensor 6SN7GTB?
  19. Determining optimal OT turns ratio
  20. Splitting up the Power Amp
  21. Sowter 5113
  22. Cascoded 6N6P
  23. MachMat or Tentlabs Heater Supply for 300B
  24. Common mode filtering for heater supplies.
  25. Distortion.
  26. 83 rectifier peak repetitive current?
  27. 813 Project has begun !
  28. C3G PX25 DRD - Will it work
  29. 6J5 (Metal Tubes) ....something goes around inside
  30. common-mode chokes
  31. EL-34 and 100k pot
  32. Scott 299 (late) OPT's
  33. Tube magazines
  34. PP plate-choke?
  35. More Phase Splitting Questions
  36. Concertina sanity check
  37. Transformer Specs
  38. The Aikido or Moskido??
  39. KT88 PP suggestion
  40. Ultrapath line amp
  41. Gross loudspeaker cone movement when using tube amps.
  42. Pre-amp power iron advice??
  43. Class A 8417 Amp
  44. DHT output tubes and DC heating
  45. rock music and SE?
  46. Disadvantages of using Zobel and Series notch filter ?
  47. old days source
  48. Mu-follower vs common cathode w/- active load
  49. K40 or K42 Russian PIO: what would you use/recommend?
  50. CCS turning off prematurely?
  51. ESL amp again!
  52. calling Moray James, and others ..wav8 or 6BM8 schemtics--PP.
  53. Does anyone know the output transformer specs of the...
  54. SE EL84 project for my friend
  55. SE amplifier - How much power?
  56. what speakers do you use?
  57. A Tube amp for a Hostille Tube Enviornment
  58. practical choice for an amp
  59. Simple cathode CCS
  60. 2A3s in push pull; class A
  61. 5 VDC heater question
  62. Power transformer snerring.
  63. Subminiature Tube & Tripath Hybrid Integrated
  64. 211
  65. Which of these output tubes?
  66. High Voltage Heater info
  67. 6SL7 in place of a 12AX7?
  68. DHT Tubes
  69. Driving 6AQ5's
  70. schematic wanted
  71. 807s replacing 6L6GCs
  72. Shielded vs twisted pair in internal wiring
  73. tube basics: computing mu and transconductance
  74. Aluminium vs steel chassis
  75. Etf06 & 07
  76. FU 13 tubes
  77. Good Souinding Direct Replacement For 325 / OP 37
  78. how to wire 6.3VDC heater on a heater with center tap (12.6V series, 6.3V parallel)?
  79. The Russian 5U4M is a 5AR4 equivalent ?
  80. WE427A Cold Cathode Diode
  81. reversing polarity in regulated B+ and other question
  82. Anthem Integrated 1
  83. Hickok 800 settings
  84. Advice/Help - Cap upgrade
  85. question on old tube sockets
  86. fisher sa-16 very red tube and?
  87. pros/cons of a 845 VS 211
  88. Preamp Power and Voltage Output
  89. Anyone seen these 6L6GCs before?
  90. online transformer info for newbies
  91. High voltage pseudo-triode
  92. Yes, again: mains-powered KILLER amp without a power transformer.
  93. Quicksilver 300b monoblock (KT88 conversion)
  94. Output transformer (SE) - DIY
  95. is Gary Pimm still around?
  96. carbon composition - 2 types
  97. Input attenuation on Leak amp
  98. 101D Sockets
  99. PC86, '88 RF Amplifiers
  100. Jolida SJ-302A tube swap
  101. Inductance for tweeter OPT
  102. Help me.......What is the 6SN7 ???????
  103. high DCR secondary (power transformer)
  104. Transformer power formula Help???
  105. 2A3 OTL 800 Ohm Speaker
  106. Trying to find specs on transformer core material
  107. 12AX7 suggestions?
  108. power supply (cap input)
  109. is it safe to connect these secondaries in series?
  110. Peter Millett's Uniamp with KT88
  111. Mystery transformer
  112. Can I phase split like this?
  113. How to model psud2 using tube regulator?
  114. Choke-loaded 6C33C stage
  115. EL84 as both driver and output stage.
  116. Silvertone (Sears) stereo amp
  117. Chasing hum in a new tube amp
  118. Zenith K731 AM/FM radio audio random cracking sound in FM mode
  119. 6bx7gt Se Amp
  120. Beard P100 Bias Lights
  121. Metasonix TS-21 modulator
  122. help with diyparadiso schematics
  123. electrostatic shield - nice to have or recommended or doesn't matter?
  124. Simple method for 240V from 240V line
  125. Audiophile bibliophilia nervosa
  126. Help with amp layout
  127. Why triode Mk3 is louder than stock Mk3
  128. Seduction or Cornet for phono???
  129. Please review my 6AQ5 Amp
  130. 832A PP Amp LTP
  131. Checklist to observe before applying the mains
  132. C3g driving 2a3: Triode or pentode?
  133. psud2 question and Fi Primer's 211 circuit
  134. Jolida JD-301A & Jadis DPL
  135. Headphones with a Tube Amp
  136. 6S3B-V Wire-Ended Single-Triode tube
  137. Anode stoppers
  138. Weird Quad II mains transformer help
  139. Mullard 5-20 parts list
  140. has anyone DIYed a Citation 2?
  141. Bogen/plexi conversion question
  142. Matched pair - different brands
  143. ERIC Mod 3460P Restore
  144. PV12 Preamplifier
  145. Grandma's old Capitol Console
  146. Music Angel
  147. What is the version of 45
  148. Aikido for guitar?
  149. Heathkit potted power transformer question
  150. Thermionic Cooling?
  151. What have the finest sound, the PX4 or the 45 ?
  152. value of a cap between driver tube and output tubes
  153. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  154. Mini EL84 Amp Done
  155. Overcoming Miller
  156. Heathkit Schematic model AA-50 needed
  157. Help me choose please
  158. Mono Class A SE Schematics
  159. Irish DIY Meet.
  160. Sizing PP OPT
  161. 6BQ5/EL90 guitar amp schematics wanted
  162. Do SE transfomers get hot?
  163. Aikido Questions
  164. LTP with interstage trafo
  165. 6BQ5 Push-Pull amplifier
  166. Amplifier input
  167. C#@$ quality 6L6EH's
  168. Mains toroids appear to be great for audio
  169. High bias point.
  170. ebay amp
  171. GU 50 output modification
  172. 6C41Cs Class-A PP
  173. My First Big Amp
  174. sv572-10
  175. Stupid PAS-2 Pot Questions
  176. Old electronics articles
  177. UL Feedback
  178. who know fd23 and fd422 tubes?
  179. Laptop amplifier
  180. Thoughts Of Modifying My First Tube Amp.
  181. Quick question for Eli Duttman (or others!)
  182. Blackened GZ32 glass envelopes
  183. Are these vintage vacuum tubes suitable.....
  184. Tube XP8109-02?!
  185. peak current 300B heater with start up
  186. Microphonic phono preamplifier
  187. Pentode Plate Load
  188. what monoblocks to build?
  189. All tube direct box
  190. max b+ for 6V6
  191. What speakers to go with tubes ??
  192. Bluenote Koala Tube CD Player
  193. OPTs and power for bi-amping
  194. Quick And Dirty ~75W Guitar Amp
  195. Old Diodes
  196. Father, I abused my Leak S/20
  197. 6688/E180F line stage?
  198. Variable feedback to enhance damping factor at low frequency
  199. Need assistance with picking the right Edcor audio transformer
  200. Critique my first design
  201. Biamping, phase of output?
  202. Ground star
  203. op-points for 27 pre...?
  204. Opinions/Experience of Toroidal valve amps
  205. hum, no way to get rid of it
  206. How to adjust my circuit for frequency response?
  207. Input Tubes?
  208. 6BG6 = 6L6GC with top cap - cheap!
  209. Maida Regulators Redux
  210. ground of DC bias supply
  211. does anyone the website for yaqin/mr. liung/music angel amps?
  212. plate load ccs ala gary p question
  213. Books for newbe
  214. 6AS7 OTL
  215. n00b phono preamp troubleshooting..
  216. TubelabSE - Anyone built?
  217. any example of SE designs using GM70?
  218. Shunt regulator question
  219. Any RH807 builders?
  220. Replacing multi-section caps with multiple caps?
  221. Recycle an Eico HFT-90 for a preamp
  222. EL84 PP output transformer for 6L6 PP class A
  223. Jensen PIO capacitor burn in
  224. toroid psu, weird results...
  225. Squeaky Noise in ARC Dual 75
  226. EL84 mod questions
  227. Measuring DC at preamp output
  228. Is Northern Electric the NEW W.E.?
  229. Burnt Woodside STA35 valve amp... Help!
  230. My tube preamplifier project
  231. Ponderings on hybrid 300B
  232. Maida Regulator Parts
  233. anyone familiar with the 211/vt4c circuit from Fi Primer?
  234. Calculating operating points of two DC stages
  235. Advice for retubing VTL Ichiban`s
  236. Need help
  237. Art Audio Kit on Common Ground Magazine
  238. Advice for retubing VTL Ichiban`s
  239. fisher 800c intermitant hum
  240. calling Yves....
  241. X10 Pre
  242. NEW KT66 - 6AU6 single ended
  243. mechanical hum
  244. Big valve preamp
  245. Question about biasing heater above cathode in a direct coupled circuit.
  246. center tapped choke inverter
  247. Guitar tube pre DIY suggestions..?
  248. Which One Of These Tube Amps Should I Buy?
  249. Tube Info
  250. Circuit/Equipment Designer

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