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  1. How to drop 10v from mains for 300b amp.
  2. SE Output Primary Impedence
  3. Different input valves for KT88
  4. EL84/6BQ5 LUXMAN Amps
  5. Heresy? Replacing tube rectifier w/Weber Copper Cap
  6. Direct Coupled Choke-assisted Mu-stage
  7. Another 845 SE
  8. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  9. 12FQ8's ?
  10. my first tube site
  11. different measurements
  12. DIY Dyna MK 2's and using bottlehead C4S
  13. Elektor ECL86 RIAA Preamp
  14. ECC88 - upgrading from Teonex - Help ?
  15. B+ problem?
  16. Realistic SAF 24c - Need some help
  17. what is the cap
  18. EAR 509 Mkii manual
  19. Where do you draw the line between tube and sand?
  20. Shinrock transformers
  21. OT: Anybody having problems getting to AA ? nt
  22. how much above B+ will voltage swing in OPT?
  23. bias meter and pot lead length
  24. 211 biasing voltages preferances
  25. Definitely NOT a Loftin-White!!
  26. Val MP 211 info wanted
  27. Look for EL33 PP structure circuit
  28. Rodding Bogen CHB-10A Mono Blocks
  29. two value tube amps for active DIY horns
  30. GEC 912+
  31. soon available as wrist watch.....
  32. Low sensitivity speakers and valvs, no nfb?
  33. Has anyone built this amp?
  34. Difference bewteen ultralinear & triode mode?
  35. 7586 nuvistor
  36. Valve Identification-Help
  37. KT 88 schematic search
  38. Bias the new power tube
  39. 6M6G Structure of the circuit
  40. I Think I Saw Heaven !
  41. Tron Syren
  42. extremely low output
  43. project suggestion with spare trans
  44. cinema amps
  45. c3g producing sparks
  46. Where to get transformer parts?
  47. penta labs
  48. Dynaco ST70 clone
  49. anyone tried the diy paradise simple el84 pp
  50. compression?
  51. 100V trannies as valve OPT
  52. 6bm8 / Ecl82 Pse & Srpp
  53. Lowther LL26 restoration
  54. Can I trust my Valve Tester
  55. (RCA) 6SN7 GTC spec?
  56. re: need help on Counterpoint SA5.1 preamp
  57. Why no CCS in PP output stage?
  58. 811-A amp
  59. DYNACO 120W AMP for DYNA A-451
  60. 35watts el34 amp schematic search ?
  61. tube
  62. My first design. PSE 211 to review.
  63. new 832 tubes?
  64. How to test a tube
  65. 50V line trafos for tube O/P?
  66. Distortion analysis mu follower
  67. the general radio experimenter
  68. resistor value, please
  69. PL519 PP design
  70. Dealers for output irons in EU wanted
  71. Any Twin Power triode Noval type?
  72. ARC SP9 Preamp voltages
  73. Power transformer
  74. OTL for Raven R2
  75. passive preamp (autoformer)
  76. How fragile are Sylvania 10Y tubes?
  77. SE 6SN7/813 direct coupling
  78. Riken Ohm Vs Kiwame
  79. Advantage of Valve Preamp?
  80. SiC Schottky rectifiers.
  81. 30 W from 6c33b?
  82. Built-in bleeder in ASC?
  83. 833 and GU-48
  84. Safety with high volts: 101
  85. Kofi Annan in: "B+... PLUS!!!"
  86. searching for darling tubes.
  87. Audio Research LS8 scheme
  88. My new pp KT88 design
  89. Tubepreamp and Zappulse?
  90. Comments on Transcendent Sound products
  91. regaring 833se
  92. Asc Oil Capacitors
  93. Buy Tubes
  94. Placement of power amp imput resistor
  95. Brimar EL34
  96. Elekit TU-870
  97. Tube amplifier mods
  98. Stromberg-Carlson project
  99. How to design the straight load line for choke loaded tube ?
  100. OPT failure modes
  101. Life of tubes - what to expect?
  102. Profiteering from Gordan Rankin Designs
  103. Gain/Schematic Question
  104. Heath Distortion Measurement Set HD-1
  105. Tube troubleshooting question
  106. Speaker tube amp with headphones
  107. Gain of 6AK5
  108. R vs. RC on secondaries
  109. My simple 5010 amplifiers
  110. constant current sources...
  111. Critical resistors
  112. Digital tube designs?
  113. 2A3 SE Amp
  114. Dact closeout
  115. Mysterious runaway output tube
  116. Ampex 351 Power Transformer
  117. better the Pass camp?
  118. My first tube amp kit.
  119. Plate Resistor
  120. EZ81 tube rectifier
  121. 4K:10K interstage
  122. DIY in New York City
  123. dead project, new life?
  124. Interesting Read On 300B's
  125. Low voltage tubes
  126. Perser SA20 Restoration
  127. IP headroom with LTP splitter
  128. Triode strapping 6l6gc PP
  129. Question on design
  130. pin outs on Hammond tube amp?
  131. cathode follower
  132. Positive feedback online issue #16
  133. el84 help
  134. RIAA help
  135. Advise for my first tube amplifier, please
  136. My 50/10Y amp with hybrid PSU... am I doing the standby switch right?
  137. What can I build with this iron?
  138. Hey Planet_10 (and others)
  139. Tube sockets for Harmon-K Citation II
  140. Seeking a source for Mundorf M-caps.
  141. Question on ZZ-1000/8228
  142. noise analysis
  143. Help wanted with fixing french DRG valve preamp....
  144. How hot are they supposed to get?
  145. EF86 Triode Mode
  146. Using a 6SL7 in a tube overdrive pedal instead of 12AX7?
  147. naive questions
  148. Rozenblits Grounded grid preamp layout
  149. Help extend the life of my 805's
  150. Difference between 5687, 5687WA and 5687WB tubes?
  151. The first tube "integrated circuit" (1926)
  152. Fix loose connection in base with solder pot?
  153. 91a 300b conversion to 2a3
  154. Adams Amp Discussion, please help! :)
  155. Had a bad accident with my TT21 today.
  156. Different sound for CD Tube Player
  157. Tube audio transformer
  158. Hybrid Srpp
  159. "it is just SO hard to get bad sound from EL84 PP amp"
  160. Wire types??
  161. triode vs. pentode for pp output.
  162. 6GK5 vs. EC95/6ER5
  163. 25BQ6GTB?? Any Good?
  164. do pp output tubes have to be matched?
  165. Ampex 600 pre
  166. line-stage preamp tubes? which ones to use...
  167. Another timekiller project
  168. 6sn7GT
  169. problem with EL84 PP amp
  170. a speaker whose load varies too much for an OTL
  171. Mystery manufacturer/distributor
  172. 37s Anyone?
  173. sv811-10 push pull
  174. 416B dangerous tube?
  175. blew my amp because of distortion pedal
  176. Help with Tube Phono Output Impedance
  177. Minimum current for choke operation
  178. stored energy in output transformer?
  179. socket mounting depth
  180. Parafeeding a push pull
  181. Different direct heating styles?
  182. The most simple tube preamp
  183. Sample/hold DC servo circuit
  184. Interstage transformer as OPT?
  185. What can you do with cheap 1kV power?
  186. Flashing Rectifier Tube- Bad Thing?
  187. Amp for my speakers, PLEASE Help
  188. suitable preamp for a tube amp (kt88+12ax7)
  189. anyone know of a kit to make tube night light?
  190. Sprague capasitor id
  191. Question on Tango XE-20S
  192. 6SL7 diff pair - how to set up????
  193. Hwat should be the best driver for a 520V2 ?
  194. problem: half power on push-pull ?
  195. Triode Dick/FdeGrove 2A3 PP amplifier
  196. PSU for perusal
  197. Kt66 Gec Replica
  198. 6as7
  199. Please confirm my transformer math.
  200. Anything wrong with this design?
  201. Buffer Line Pre-Amp Power Tx
  202. Why filter in tube DAC?
  203. advances in tube amp design?
  204. How to determine grid leak current?
  205. dissimilar triode for White cathode follower?
  206. tube rectifier
  207. 6Vdc from 6,3Vac
  208. Computer Grade Cap or Inverter Grade Cap???
  209. Peculiar Sovtek EL34 bevaviour
  210. 5AS4 sub for 5U4
  211. Preamp hum again
  212. Modifying amp to accept different tubes (Newbie alert!)
  213. Quetion for Thorsten
  214. OPT axis
  215. Schematic Counterpoint SA3.1 and SA-9
  216. optimizing constant current heater supply
  217. Valve Art KT100
  218. baxandall tone control
  219. Kofi Annan in: "Brownin' Out!"
  220. strange tube
  221. Monarch SA-30 Schematic
  222. Power Supply for 300B Monoblock
  223. Matisse Line Amp
  224. Panel mounting on a woode case
  225. Hardware??
  226. another way to turn a pentode or tetrode into a triode
  227. 0Z4 as a rectifier?
  228. Unused HV windings on power transformer
  229. Mundorf M-Lytic and Silver-in-Oil Capacitors
  230. grainy preamp gain
  231. Need help with PS for 1626 "Darling" amp
  232. questions about power supply for 6l6 pp
  233. Proof that demagnetizing tubes works
  234. ECC88/5687/2A3 amp voltages
  235. What can I do with these? (tube and OPT question)
  236. Blowing fuses
  237. questions about transfo
  238. Common Cathode Resistor
  239. Why a Zobel network across OPT primary or secondary?
  240. Morgan Jones "Valve Amplifiers"
  241. Why?
  242. 833 push pull design help
  243. Lamm schematics
  244. Mu Followers -- ressources?
  245. Pennsylvania DIY's
  246. Interstage trans? Yes please!
  247. What's wrong with UL anyway ?
  248. SE amp like mcintosh ?
  249. 300b Push Pull Interstage Tsf
  250. amp stages...

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