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  1. dc phono
  2. screen-plate resistor and grid leak resistor
  3. Kr842vhd
  4. DRD 300b amplifier sound quality?
  5. Pre-amp selection
  6. tube buffer for TDA1543 based dac
  7. Does anybody know if a WE404 (5847) would be able...
  8. Transformer Question
  9. New preamp
  10. Fisher 800c neg bias problem
  11. Seek your comments on 71a tube amp
  12. Single-Ended 6V6 Questions
  13. El509 Plate current question
  14. Building a Pre-Amplifier
  15. cathode bias in OTL??
  16. 10y-IT-10Y SE amp
  17. Any schematics for balanced line driver using 6922?
  18. Would you buy EI EL509/EL519 in an Octal Package?
  19. A Noisey CAT SL1 Reference
  20. Plate color and getter
  21. Learning to interpret the performance curves for KT88
  22. 811A in P.S.E or P/P
  23. Quick help needed! LOTs of noise in BBMCCCS loaded /0A2 regulated preamp!
  24. power output calculations, rated power and required power output
  25. Please help with Stancor A-4416
  26. transformers, read me!!!!
  27. Source for archive cd of Sound Practices Magazine
  28. PSE with 6C41C
  29. cathode follower
  30. Orientation and Horizontal Mounting
  31. Newbie on cathode curves
  32. transformers, regulation, triode-connection...
  33. 1st tube project - newbie tranny question
  34. NOS supply
  35. AN7 prototype- variation?
  36. Help needed with 805 sets
  37. controlling heat in tube amps.
  38. Suround Tube Amp?
  39. PSUD Model Hack
  40. advice about project wanted (newbie)
  41. Newly CCS circuit from Pimm
  42. simple matching philosophy on tubes..
  43. A good source for PIO & HV Resistors??
  44. ARC SP8 schematic
  45. some questions...
  46. 6KD6 For OTL??
  47. Rogers Cadet III PU Adapter
  48. G2-driven 6BM8
  49. Appropiate cabling quality & Regulators
  50. Tubes.Ru
  51. Buy 6C33 in Canada, where?
  52. A simple OTL??
  53. Allan Kimmel OTL
  54. sansui au111 output transformer
  55. JJ capacitors
  56. How many rectifiers?
  57. Can I use LT1083 as a CCS load?
  58. What front end for PP - triode, pentode, mu-stage or differential triodes?
  59. Electro-Harmonix 6SN7EH
  60. hehe
  61. Any DHT PX25 DIY user here???
  62. 6216 beam pentode question
  63. comments on this design..
  64. Parallel single ended or push-pull?
  65. amp measurements
  66. Extremely low power first amp problem
  67. Are these Caps any good?
  68. ...in SE mode !
  69. Simple 6BM8 at Evolve Power Amps?
  70. Newbie needs help. Basic PSU design and choke question.
  71. Audio Innovations 800 (series 2)
  72. 12B4A PP schematic
  73. Breakdown between solder tags?
  74. Caps topology
  75. questions about tubeamp building
  76. Antonio Tucci
  77. Choke Load or WOT
  78. Amp identification wanted
  79. tubes or not..!
  80. Vitreous Enamel vs Wirewound Resistor
  81. Will Simple 5687 or Etude 12b4A drive headphones?
  82. For Info: We91 Fans
  83. Just finished my new 300B amp
  84. tape alignment hell
  85. caps for RIAA network
  86. tube based CCS
  87. Tube brands.. who is best/most popular..
  88. Vintage Oil Caps
  89. Please critique this 2A3 SE schematic!
  90. KT-88 Ella amplifier, how to lower noise?
  91. PSU2 and power transformer question.
  92. Possible to make a KT88 PP UL schemat OTL ?
  93. Using 12 EL519 for T8
  94. what film capacitors do you use?
  95. 6550, kt88's at 600+ Volts
  96. circuit diagram to build my DIY preamp
  97. The rule to calculate the load impedance of two or more valvces connected in parallel
  98. no capacitors!
  99. SJS SE 300B with Interstage Transformer Mk2
  100. Differential input stage for T8 OTL-OCL from newbie
  101. Scott LK72 output transformer quality ?
  102. Van Scoyoc SRPP Amp - GvT
  103. Newbie/Guitar Amp BOOK recommendation
  104. Hammond PT and KT88 Design costs.
  105. direct coupling
  106. NFB question
  107. ebooks/online literature...
  108. First time tube jitters...
  109. Audio Note Kageki vs. EAR 859 vs. Audio Innovations: The First
  110. Where is the best place to add tubes in this system?
  111. Anyone seen one?
  112. newbie and i mean new
  113. Differential amp, Long tail, Split load - what difference in sonics?
  114. IC geometry
  115. Fully silver hard wired
  116. Possible damage of a 5AS4 full-wave rect...
  117. direct coupling
  118. Good 6L6 schematic needed
  119. I could lose some heat - suggestions?
  120. Svetlana Svetlana EL509-II: Please disregard all my statements about this tube!
  121. help using Tube Tester
  122. @Tanberg owners. help needed..
  123. Electro Harmonix KT90 after 200hrs use
  124. Need suggestions on tube regulator.
  125. EAR 859 questions
  126. First build from scratch.
  127. Tanberg design..
  128. How to use Russian tube 6H6
  129. Are Svet EL509s really EL509s?
  130. Resistors and Capacitors
  131. simple design power amp.. wanted.
  132. SJS SE108Mk2 Amplifier layout.
  133. Free Auctions?
  134. measuring wattage?
  135. Seeking advise on my EL34 amplifier
  136. exchange
  137. CCS in tail of differential phase splitter
  138. Quicksilver 6550A's?
  139. Is this mod worth the effort?
  140. Current sourced heaters
  141. Manual for Tube Technology - Unisis Signature
  142. Valve amp with Dynaudio?
  143. Why can 8W sound as loud as 100W?
  144. Progress of my 813 SE
  145. NOS Tubes
  146. Would it be possible? OTL/OCL KT88?
  147. KT88EH matched quad auction, Fake?!
  148. Interstage attenuation transformer?
  149. HV ON noise
  150. Opinions on Walton Audio 300B Design
  151. Joplin Amp
  152. voltage regulators
  153. CCS for PP Class A output stage?
  154. distortion measurement
  155. Has anybody built the Matthew Reidsma Experimental 45?
  156. Citation II Assembly Manual
  157. what tube preamp DIY kit to match B&W P-5 speakers
  158. heavy duty valve amps.... for PA use....?
  159. Audio Innovation 800 mk2 ? advice?
  160. Tube amps.......AGAIN
  161. driver 6a3
  162. Morgan Jones H/P Amp problems PLEASE HELP
  163. Wad 6550
  164. Ferguson Type: OX170 & Ferguson OP6M Info Needed...
  165. Ebay Stuff - electrolytics for tubies
  166. Pioneer output transformers from the 60's
  167. The future of the Valve.
  168. Trying to understand negative feedback
  169. schematics
  170. Overvolting e-lyts
  171. Bottlehead Paramours done my way
  172. next project: rebuild using fisher 500c trannies
  173. Consonance ELLA
  174. Just a quick Q
  175. Has anyone tried a 6S4A as a 300B driver tube?
  176. Tube Preamp PSU Question
  177. 6N1P for buffer instead of 6DJ8, 6922
  178. quick question about a sovtek 6922
  179. 50.000 $ for a 30W amplifier .
  180. Opinion upon amp life expectancy at 5 hours/day? (theres a catch)
  181. Online Resoucre for Old Tubes?
  182. Comparisons
  183. Conrad Johnson PV10 mod
  184. ETM connected EL/PL509 in T8 OTL-OCL amplifier - how?
  185. good replacement for ECC82
  186. Velleman K4040
  187. $5 SE amp... but is it fried?!
  188. Build with 300B or something else???
  189. Another question
  190. Anybody know these two tubes? DET-9 & Ba
  191. Decent Valve Amp Kit?
  192. distorted hum
  193. Which KT88??
  194. Not connecting grids/anode can hurt tube?
  195. Question for SE Transformer Gurus
  196. Decoupling Paper In Oil capacitor question for KT88 design.
  197. Isabelle Phono Stage
  198. input/driver tube
  199. Best Sounding 6550
  200. toroidal trannies alignment
  201. OTL OCL or Non
  202. How can I use UTC A22 at OPT in pre-amp?
  203. SE Output Transformers
  204. Sq-5
  205. Specs And Curves
  206. Golden Dragon Tube
  207. 2A3 Output Transformer
  208. Powre Transformer for 2A3
  209. Newbie - Is this a good amp?
  210. Reference for DIY AudioCraft in Hong Kong
  211. tubes avalibility
  212. OTL Output Cap Question
  213. Newbie question : Plate CCS
  214. Black Art Single Ended Output Transformers
  215. quick transformer question
  216. CCS for p-p cathode bias ?
  217. Tube output stage for DAC
  218. Reinhöfer Transformers (Germany).
  219. power transformer help !!!
  220. UXCV11 Triode Tube
  221. HVHP shuntreg PCB's available?
  222. Harmon Kardon Ballad Stereo Amplifier
  223. 811A tube internal resistance ?
  224. 8417
  225. Running tubes at lower voltages
  226. EL34-PP building questions
  227. tube 8416 good for audio ???
  228. tube substitution and amp modification guidelines
  229. Real russian tubes anyone??
  230. I'm starting 300B amp
  231. Anyone tried this at home?
  232. push pull bias servo
  233. Sylvania JAN 6L6WGB max plate V?
  234. Repairing valve bases
  235. E55L in triode as driver!
  236. SE Class A with 845or 211. Need a good circuit
  237. st-70 questions... tips?
  238. Biasing a Class A amp information
  239. Holy Grail of Valve Amps
  240. Diff amp driver -> SE output
  241. hipass/lowpass filters
  242. Beginners question(help!)
  243. Capacitor Question /question on cap
  244. Report on 6922 testing
  245. 6ha5
  246. Western electric VT1 tubes
  247. Edge connectors - which to use?
  248. pc mount el34 socket
  249. use MKP capacitor instead of electrolytc for AC filter
  250. 12B4A Linestage

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