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  1. audionote schematic wanted !!
  2. DIY Extreme performance Output Transformers - AMSOL
  3. Dressing up Ampex 2012 tube amps
  4. About McIntosh C22 power transformer
  5. it is almost alive
  6. Ef86, 6H30PI and 2 EL34
  7. 7868 tubes in Bogen CHB100
  8. DIY Powdered Iron Tranny Core
  9. Which BG cap best suited for cathode bypass?
  10. Oscillation question- pre or power?
  11. changing (de)coupling cap values
  12. opamp driving tubes
  13. tube 833a
  14. My latest Project (nightmare)
  15. output transformer primary imp. calculation
  16. rogers cadet mk3 hummm.....
  17. Someone help: SE shematic with GK71?
  18. Calling Graham Ingle of black cat electronics
  19. Old Emerson Tube Radio... great find!
  20. E810F in triode
  21. GZ37 replacement?
  22. Bias adjustment question
  23. 6W Self Inverting 6BQ5 Amp
  24. Inductance a problem with wirewound pots?
  25. Fun circuit with a 12ax7 (ecc83)
  26. want to do PP-GM70
  27. spraying the guts of my amp...
  28. How to drop 10v from mains for 300b amp.
  29. SE Output Primary Impedence
  30. Different input valves for KT88
  31. EL84/6BQ5 LUXMAN Amps
  32. Heresy? Replacing tube rectifier w/Weber Copper Cap
  33. Direct Coupled Choke-assisted Mu-stage
  34. Another 845 SE
  35. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  36. 12FQ8's ?
  37. my first tube site
  38. different measurements
  39. DIY Dyna MK 2's and using bottlehead C4S
  40. Elektor ECL86 RIAA Preamp
  41. ECC88 - upgrading from Teonex - Help ?
  42. B+ problem?
  43. Realistic SAF 24c - Need some help
  44. what is the cap
  45. EAR 509 Mkii manual
  46. Where do you draw the line between tube and sand?
  47. Shinrock transformers
  48. OT: Anybody having problems getting to AA ? nt
  49. how much above B+ will voltage swing in OPT?
  50. bias meter and pot lead length
  51. 211 biasing voltages preferances
  52. Definitely NOT a Loftin-White!!
  53. Val MP 211 info wanted
  54. Look for EL33 PP structure circuit
  55. Rodding Bogen CHB-10A Mono Blocks
  56. two value tube amps for active DIY horns
  57. GEC 912+
  58. soon available as wrist watch.....
  59. Low sensitivity speakers and valvs, no nfb?
  60. Has anyone built this amp?
  61. Difference bewteen ultralinear & triode mode?
  62. 7586 nuvistor
  63. Valve Identification-Help
  64. KT 88 schematic search
  65. Bias the new power tube
  66. 6M6G Structure of the circuit
  67. I Think I Saw Heaven !
  68. Tron Syren
  69. extremely low output
  70. project suggestion with spare trans
  71. cinema amps
  72. c3g producing sparks
  73. Where to get transformer parts?
  74. penta labs
  75. Dynaco ST70 clone
  76. anyone tried the diy paradise simple el84 pp
  77. compression?
  78. 100V trannies as valve OPT
  79. 6bm8 / Ecl82 Pse & Srpp
  80. Lowther LL26 restoration
  81. Can I trust my Valve Tester
  82. (RCA) 6SN7 GTC spec?
  83. re: need help on Counterpoint SA5.1 preamp
  84. Why no CCS in PP output stage?
  85. 811-A amp
  86. DYNACO 120W AMP for DYNA A-451
  87. 35watts el34 amp schematic search ?
  88. tube
  89. My first design. PSE 211 to review.
  90. new 832 tubes?
  91. How to test a tube
  92. 50V line trafos for tube O/P?
  93. Distortion analysis mu follower
  94. the general radio experimenter
  95. resistor value, please
  96. PL519 PP design
  97. Dealers for output irons in EU wanted
  98. Any Twin Power triode Noval type?
  99. ARC SP9 Preamp voltages
  100. Power transformer
  101. OTL for Raven R2
  102. passive preamp (autoformer)
  103. How fragile are Sylvania 10Y tubes?
  104. SE 6SN7/813 direct coupling
  105. Riken Ohm Vs Kiwame
  106. Advantage of Valve Preamp?
  107. SiC Schottky rectifiers.
  108. 30 W from 6c33b?
  109. Built-in bleeder in ASC?
  110. 833 and GU-48
  111. Safety with high volts: 101
  112. Kofi Annan in: "B+... PLUS!!!"
  113. searching for darling tubes.
  114. Audio Research LS8 scheme
  115. My new pp KT88 design
  116. Tubepreamp and Zappulse?
  117. Comments on Transcendent Sound products
  118. regaring 833se
  119. Asc Oil Capacitors
  120. Buy Tubes
  121. Placement of power amp imput resistor
  122. Brimar EL34
  123. Elekit TU-870
  124. Tube amplifier mods
  125. Stromberg-Carlson project
  126. How to design the straight load line for choke loaded tube ?
  127. OPT failure modes
  128. Life of tubes - what to expect?
  129. Profiteering from Gordan Rankin Designs
  130. Gain/Schematic Question
  131. Heath Distortion Measurement Set HD-1
  132. Tube troubleshooting question
  133. Speaker tube amp with headphones
  134. Gain of 6AK5
  135. R vs. RC on secondaries
  136. My simple 5010 amplifiers
  137. constant current sources...
  138. Critical resistors
  139. Digital tube designs?
  140. 2A3 SE Amp
  141. Dact closeout
  142. Mysterious runaway output tube
  143. Ampex 351 Power Transformer
  144. better the Pass camp?
  145. My first tube amp kit.
  146. Plate Resistor
  147. EZ81 tube rectifier
  148. 4K:10K interstage
  149. DIY in New York City
  150. dead project, new life?
  151. Interesting Read On 300B's
  152. Low voltage tubes
  153. Perser SA20 Restoration
  154. IP headroom with LTP splitter
  155. Triode strapping 6l6gc PP
  156. Question on design
  157. pin outs on Hammond tube amp?
  158. cathode follower
  159. Positive feedback online issue #16
  160. el84 help
  161. RIAA help
  162. Advise for my first tube amplifier, please
  163. My 50/10Y amp with hybrid PSU... am I doing the standby switch right?
  164. What can I build with this iron?
  165. Hey Planet_10 (and others)
  166. Tube sockets for Harmon-K Citation II
  167. Question on ZZ-1000/8228
  168. noise analysis
  169. Help wanted with fixing french DRG valve preamp....
  170. How hot are they supposed to get?
  171. EF86 Triode Mode
  172. Using a 6SL7 in a tube overdrive pedal instead of 12AX7?
  173. naive questions
  174. Rozenblits Grounded grid preamp layout
  175. Help extend the life of my 805's
  176. Difference between 5687, 5687WA and 5687WB tubes?
  177. The first tube "integrated circuit" (1926)
  178. Fix loose connection in base with solder pot?
  179. 91a 300b conversion to 2a3
  180. Adams Amp Discussion, please help! :)
  181. Had a bad accident with my TT21 today.
  182. Different sound for CD Tube Player
  183. Tube audio transformer
  184. Hybrid Srpp
  185. "it is just SO hard to get bad sound from EL84 PP amp"
  186. Wire types??
  187. triode vs. pentode for pp output.
  188. 6GK5 vs. EC95/6ER5
  189. 25BQ6GTB?? Any Good?
  190. do pp output tubes have to be matched?
  191. Ampex 600 pre
  192. line-stage preamp tubes? which ones to use...
  193. Another timekiller project
  194. 6sn7GT
  195. problem with EL84 PP amp
  196. a speaker whose load varies too much for an OTL
  197. Mystery manufacturer/distributor
  198. 37s Anyone?
  199. sv811-10 push pull
  200. 416B dangerous tube?
  201. blew my amp because of distortion pedal
  202. Help with Tube Phono Output Impedance
  203. Minimum current for choke operation
  204. stored energy in output transformer?
  205. socket mounting depth
  206. Parafeeding a push pull
  207. Different direct heating styles?
  208. The most simple tube preamp
  209. Sample/hold DC servo circuit
  210. Interstage transformer as OPT?
  211. What can you do with cheap 1kV power?
  212. Flashing Rectifier Tube- Bad Thing?
  213. Amp for my speakers, PLEASE Help
  214. suitable preamp for a tube amp (kt88+12ax7)
  215. anyone know of a kit to make tube night light?
  216. Sprague capasitor id
  217. Question on Tango XE-20S
  218. 6SL7 diff pair - how to set up????
  219. Hwat should be the best driver for a 520V2 ?
  220. problem: half power on push-pull ?
  221. Triode Dick/FdeGrove 2A3 PP amplifier
  222. PSU for perusal
  223. Kt66 Gec Replica
  224. 6as7
  225. Please confirm my transformer math.
  226. Anything wrong with this design?
  227. Buffer Line Pre-Amp Power Tx
  228. Why filter in tube DAC?
  229. advances in tube amp design?
  230. How to determine grid leak current?
  231. dissimilar triode for White cathode follower?
  232. tube rectifier
  233. 6Vdc from 6,3Vac
  234. Computer Grade Cap or Inverter Grade Cap???
  235. Peculiar Sovtek EL34 bevaviour
  236. 5AS4 sub for 5U4
  237. Preamp hum again
  238. Modifying amp to accept different tubes (Newbie alert!)
  239. Quetion for Thorsten
  240. OPT axis
  241. Schematic Counterpoint SA3.1 and SA-9
  242. optimizing constant current heater supply
  243. Valve Art KT100
  244. baxandall tone control
  245. Kofi Annan in: "Brownin' Out!"
  246. strange tube
  247. Monarch SA-30 Schematic
  248. Power Supply for 300B Monoblock
  249. Matisse Line Amp
  250. Panel mounting on a woode case

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