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

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