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  1. Can I trust my Valve Tester
  2. (RCA) 6SN7 GTC spec?
  3. re: need help on Counterpoint SA5.1 preamp
  4. Why no CCS in PP output stage?
  5. 811-A amp
  6. DYNACO 120W AMP for DYNA A-451
  7. 35watts el34 amp schematic search ?
  8. tube
  9. My first design. PSE 211 to review.
  10. new 832 tubes?
  11. How to test a tube
  12. 50V line trafos for tube O/P?
  13. Distortion analysis mu follower
  14. the general radio experimenter
  15. resistor value, please
  16. PL519 PP design
  17. Dealers for output irons in EU wanted
  18. Any Twin Power triode Noval type?
  19. ARC SP9 Preamp voltages
  20. Power transformer
  21. OTL for Raven R2
  22. passive preamp (autoformer)
  23. How fragile are Sylvania 10Y tubes?
  24. SE 6SN7/813 direct coupling
  25. Riken Ohm Vs Kiwame
  26. Advantage of Valve Preamp?
  27. SiC Schottky rectifiers.
  28. 30 W from 6c33b?
  29. Built-in bleeder in ASC?
  30. 833 and GU-48
  31. Safety with high volts: 101
  32. Kofi Annan in: "B+... PLUS!!!"
  33. searching for darling tubes.
  34. Audio Research LS8 scheme
  35. My new pp KT88 design
  36. Tubepreamp and Zappulse?
  37. Comments on Transcendent Sound products
  38. regaring 833se
  39. Asc Oil Capacitors
  40. Buy Tubes
  41. Placement of power amp imput resistor
  42. Brimar EL34
  43. Elekit TU-870
  44. Tube amplifier mods
  45. Stromberg-Carlson project
  46. How to design the straight load line for choke loaded tube ?
  47. OPT failure modes
  48. Life of tubes - what to expect?
  49. Profiteering from Gordan Rankin Designs
  50. Gain/Schematic Question
  51. Heath Distortion Measurement Set HD-1
  52. Tube troubleshooting question
  53. Speaker tube amp with headphones
  54. Gain of 6AK5
  55. R vs. RC on secondaries
  56. My simple 5010 amplifiers
  57. constant current sources...
  58. Critical resistors
  59. Digital tube designs?
  60. 2A3 SE Amp
  61. Dact closeout
  62. Mysterious runaway output tube
  63. Ampex 351 Power Transformer
  64. better the Pass camp?
  65. My first tube amp kit.
  66. Plate Resistor
  67. EZ81 tube rectifier
  68. 4K:10K interstage
  69. DIY in New York City
  70. dead project, new life?
  71. Interesting Read On 300B's
  72. Low voltage tubes
  73. Perser SA20 Restoration
  74. IP headroom with LTP splitter
  75. Triode strapping 6l6gc PP
  76. Question on design
  77. pin outs on Hammond tube amp?
  78. cathode follower
  79. Positive feedback online issue #16
  80. el84 help
  81. RIAA help
  82. Advise for my first tube amplifier, please
  83. My 50/10Y amp with hybrid PSU... am I doing the standby switch right?
  84. What can I build with this iron?
  85. Hey Planet_10 (and others)
  86. Tube sockets for Harmon-K Citation II
  87. Question on ZZ-1000/8228
  88. noise analysis
  89. Help wanted with fixing french DRG valve preamp....
  90. How hot are they supposed to get?
  91. EF86 Triode Mode
  92. Using a 6SL7 in a tube overdrive pedal instead of 12AX7?
  93. naive questions
  94. Rozenblits Grounded grid preamp layout
  95. Help extend the life of my 805's
  96. Difference between 5687, 5687WA and 5687WB tubes?
  97. The first tube "integrated circuit" (1926)
  98. Fix loose connection in base with solder pot?
  99. 91a 300b conversion to 2a3
  100. Adams Amp Discussion, please help! :)
  101. Had a bad accident with my TT21 today.
  102. Different sound for CD Tube Player
  103. Tube audio transformer
  104. Hybrid Srpp
  105. "it is just SO hard to get bad sound from EL84 PP amp"
  106. Wire types??
  107. triode vs. pentode for pp output.
  108. 6GK5 vs. EC95/6ER5
  109. 25BQ6GTB?? Any Good?
  110. do pp output tubes have to be matched?
  111. Ampex 600 pre
  112. line-stage preamp tubes? which ones to use...
  113. Another timekiller project
  114. 6sn7GT
  115. problem with EL84 PP amp
  116. a speaker whose load varies too much for an OTL
  117. Mystery manufacturer/distributor
  118. 37s Anyone?
  119. sv811-10 push pull
  120. 416B dangerous tube?
  121. blew my amp because of distortion pedal
  122. Help with Tube Phono Output Impedance
  123. Minimum current for choke operation
  124. stored energy in output transformer?
  125. socket mounting depth
  126. Parafeeding a push pull
  127. Different direct heating styles?
  128. The most simple tube preamp
  129. Sample/hold DC servo circuit
  130. Interstage transformer as OPT?
  131. What can you do with cheap 1kV power?
  132. Flashing Rectifier Tube- Bad Thing?
  133. Amp for my speakers, PLEASE Help
  134. suitable preamp for a tube amp (kt88+12ax7)
  135. anyone know of a kit to make tube night light?
  136. Sprague capasitor id
  137. Question on Tango XE-20S
  138. 6SL7 diff pair - how to set up????
  139. Hwat should be the best driver for a 520V2 ?
  140. problem: half power on push-pull ?
  141. Triode Dick/FdeGrove 2A3 PP amplifier
  142. PSU for perusal
  143. Kt66 Gec Replica
  144. 6as7
  145. Please confirm my transformer math.
  146. Anything wrong with this design?
  147. Buffer Line Pre-Amp Power Tx
  148. Why filter in tube DAC?
  149. advances in tube amp design?
  150. How to determine grid leak current?
  151. dissimilar triode for White cathode follower?
  152. tube rectifier
  153. 6Vdc from 6,3Vac
  154. Computer Grade Cap or Inverter Grade Cap???
  155. Peculiar Sovtek EL34 bevaviour
  156. 5AS4 sub for 5U4
  157. Preamp hum again
  158. Modifying amp to accept different tubes (Newbie alert!)
  159. Quetion for Thorsten
  160. OPT axis
  161. Schematic Counterpoint SA3.1 and SA-9
  162. optimizing constant current heater supply
  163. Valve Art KT100
  164. baxandall tone control
  165. Kofi Annan in: "Brownin' Out!"
  166. strange tube
  167. Monarch SA-30 Schematic
  168. Power Supply for 300B Monoblock
  169. Matisse Line Amp
  170. Panel mounting on a woode case
  171. Hardware??
  172. another way to turn a pentode or tetrode into a triode
  173. 0Z4 as a rectifier?
  174. Unused HV windings on power transformer
  175. Mundorf M-Lytic and Silver-in-Oil Capacitors
  176. grainy preamp gain
  177. Need help with PS for 1626 "Darling" amp
  178. questions about power supply for 6l6 pp
  179. Proof that demagnetizing tubes works
  180. ECC88/5687/2A3 amp voltages
  181. What can I do with these? (tube and OPT question)
  182. Blowing fuses
  183. questions about transfo
  184. Common Cathode Resistor
  185. Why a Zobel network across OPT primary or secondary?
  186. Morgan Jones "Valve Amplifiers"
  187. Why?
  188. 833 push pull design help
  189. Lamm schematics
  190. Mu Followers -- ressources?
  191. Pennsylvania DIY's
  192. Interstage trans? Yes please!
  193. What's wrong with UL anyway ?
  194. SE amp like mcintosh ?
  195. 300b Push Pull Interstage Tsf
  196. amp stages...
  197. Heater supply recommendation for 6922?
  198. hi-end?
  199. Just a quicky
  200. Question on Mains Transformer
  201. Help! Who is the dirtributors of 6V4/EZ80 and 6H30/6N30?
  202. SE 6AS7 amp question
  203. Timed switch on B+ in power supply, good idea?
  204. Parts Sourcing
  205. Power Supply Question
  206. tube amp kits
  207. in search of a schematic
  208. heater wiring
  209. 5A/152M perfect driver? SPICE?
  210. 12AU7 -> 12BH7 Do I need to change Rp?
  211. Need help understanding transformer impedance ratios and impedance matching
  212. Audio schematics for GU50 ????
  213. 6sn7 & 6sn7GTB
  214. Tube amp schematic - any thoughts?
  215. tube distortion effect.
  216. tube rolling Blue Circle BC 21 preamp
  217. A sorry tale which will make you cry !!!
  218. Variac problems
  219. tubeamp project, weekend timekiller
  220. isolated supply grounding
  221. Car preamp with Aikido
  222. Audio Note M1 potentiometer question
  223. Beginner , tube kit suggestions please
  224. Question on OPT
  225. Telefunken S80 Stereo ECL82 Amp- any comment?
  226. Active crossovers using Tubes
  227. 300BSE power amplifier circuit
  228. tube buffer using 12bz7
  229. "Complete" SE KT88
  230. Output Tube biasing for Toroidal Output Transformer
  231. Cardas Golden Capacitors
  232. Tube Buffer for CD-PRO2M (6922)
  233. Troubleshooting fuse blowing
  234. Billington valves and quallity
  235. Regulated PSU, your comments please.
  236. Change coupling cap from .47uf to 2.2uf
  237. RIAA Schematics?
  238. Line out for subwoofer in tube amps
  239. Feedback in IT coupled amps?
  240. Filemant Voltage
  241. DC compensated SE output transformer
  242. Winding an audio transformer
  243. Tube effects Loop Schematics... ?
  244. KT100...what's this ??
  245. Help measuring output impedience
  246. tubes
  247. Need PP KT-88 amp design and KT-88 for triode use?
  248. 7241 tube
  249. Max B+ for 807 UL?
  250. Problem with my Darling!

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