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  1. Genalex Gold Lion KT77
  2. driving HD600
  3. Counterpoint SA-3000
  4. Phono stage for 2 7F7s (stereo) plus buffer?
  5. Help and your input on YAQIN MC10L EL34
  6. EL Cheapo Quad amplifier???
  7. Noob questions about a K-12/K-502 kit
  8. 3 quick transformer questions
  9. Push Pull Output tranies for SE amp?
  10. Tube Rectifier Capacitance?
  11. rca 189 b console amps need more info
  12. upgrade transformer?
  13. Parasitic oscillation? (picture)
  14. newbie question : driver/output relationship, input sensitivity
  15. Unknown tube logo
  16. Impedance, the 10x rule, losses & bandwidth
  17. el84/6bq5 PSE
  18. A very odd phase inverter- comments?
  19. Please check my work :)
  20. NOS purchase, should I be concerned?
  21. Strange splitter in the Audio Research D4
  22. 6ak5/5654 plate resistance
  23. Further Troubleshooting Simple SE
  24. What is the purpose of the g2 bypass cap?
  25. questionable 2a3 schematic
  26. overdrive circuit for hammond organs(need help)
  27. A singular experiment with a unheated tube.
  28. Limited bass response in one channel
  29. Show me your fave phonostage circuits.
  30. tube heater voltage, how much is too much?
  31. Para feed choke
  32. Dynaco ST35 power?
  33. Tips/comments for upcoming 300B build
  34. page Eli Duttman's Simple p-p with 5965 MQ EXO-173 and 6AQ5
  35. DHT cathode follower idea
  36. GK71 Output Transformer
  37. Schematics for A.I. Mod 2D
  38. Determing Battery Voltage for cathode bias
  39. OT for audio but still tube
  40. Getting transfer characteristics
  41. Pentodes and Choke Loading
  42. Stepped airgap choke ?
  43. Noob question
  44. SE 300B Integrated Amp: Help choose circuit design
  45. SunAudio 2A3 to 300B
  46. Filament Snubber Cap Explodes! What happened?
  47. Alot of 12AX7's about
  48. DIY tube microphone preamp
  49. Tube tester and PSUD II questions
  50. Wurlitzer/Fisher Amp Musings
  51. please check my work
  52. How to get cathode bias info from grid bias info?
  53. SE 300B Integrated Amp: Transformers
  54. Positive feedback, improperly drawn screen, or WTF?
  55. GE Console RC 7100 A - need some help!
  56. Output tube for 600V B+, 5800 ohm primary PP, tertiary 25% UL taps?
  57. Still tring to find a couple 100uf motor runs
  58. small push-pull amp to preamp
  59. Electraprint EL84 PP with PSA-2N
  60. OpAmp Swap?
  61. Bogen MX-60A- output transformer bandwidth?
  62. 6AS7 Parallel Feed Amp
  63. PSpice model of output transformer
  64. simple guitar push pull amp
  65. Siemens capacitor
  66. Super 6BG6 vs. 6550
  67. 5687 line stage
  68. Audio Standards
  69. 4 x used 5867A (TB3/750) triodes
  70. 12au7 who has the best ultra low noise ???
  71. Questions about tweaking the Miniblok SET...
  72. The core -sonic reasons
  73. Removing pot from valve pre amp
  74. Power transformer question
  75. Tube construction materials
  76. LTP second grid
  77. How to figure out the bias point of fisher X-100A
  78. Schematic help! (Bell)
  79. Audio Note Soro SE SCHEMATICS
  80. 807 Tube Triode Connected
  81. Would you pls help.
  82. came across this nice 200W tube amp schematic
  83. Anyone seen this amp topology before?
  84. Max. grid resistance
  85. Yaqin mc10l "popping"
  86. Audio Electronics Supply
  87. Alamo Fury 2566
  88. My friends in the USA - tube stores in LA
  89. Can this marraige work?
  90. RJM with 12AY7
  91. Bias winding to power sand
  92. FM Tube radio design
  93. What do you use? Not technical but relative.
  94. looking for a pre-amp schematic
  95. I have waay too many 6DJ8's
  96. Tango NP126
  97. Two 6J5 versus one 6SN7
  98. Bunch of questions regarding plate CCS and some else.
  99. Tube Store in Washington DC (6C33C Triode Buy Where??)
  100. Scott 399 Receiver Schematics?
  101. Need help with 6l6GC choices
  102. Need Hammond/Everett drawings.
  103. 6V6 PP-based Baby Huey/Mullard inspired design needed...
  104. Ecf80
  105. Please Explain difference Mono vs Push Pull vs Single End etc
  106. VU Meters
  107. diy preamps, bottlehead, decware....
  108. Power supply choke help needed
  109. LED cathode biasing in push-pull input stage
  110. applying fixed bias to cathode followers
  111. Battieries for B+
  112. Put amp in chassis, then, right channel doesn't work!
  113. hammond transformers?
  114. Two Rectifiers, One transformer
  115. Cool problem with Marshall TSL!!!
  116. Tubes currently in production
  117. Rachel's Corner - Shuguang
  118. Small 50C5 Amp improvements
  119. Low voltage pentode?
  120. TX distortion
  121. DIY U-L curves
  122. Transformer spacing
  123. Covers for budget output transformers
  124. Correct for bipolar voltage doubler?
  125. Source for 100uf motor run cap.
  126. magnavox 185aa with 4-6v6
  127. Yaqin 300B re-biasing
  128. Line Amp Diy 6j1
  129. Diy Line Amp£_£_6sn7
  130. Diy Line Amp Audio Note M7
  131. Diy Line Amp Cat Sl-1
  132. Diy Line Amp Malanz 7
  133. Diy Line Amp Htm
  134. Diy Line Amp Jp-80
  135. Diy Line Amp 5670
  136. Quality difference between output transformers
  137. A group-build project for a tube power amp in India
  138. pilot light ideas please
  139. Small signal pentode - zener screen regulation - why not ??
  140. Another KT-88
  141. Rod Coleman filament supply circuit boards
  142. Losing the treble and transient response in this PX25 SE amp
  143. Calculating Zout for Pentode amp with NFB?
  144. Bypassing a volume pot
  145. Lab supply for cathode bias experiment question..
  146. Rheostat for adjustable "fixed" bias?
  147. Output transformer Question
  148. Real Cost of Decware Amplifiers
  149. Digitally driven tube pre-amp
  150. Real cost of Dynaco ST 70 Kits
  151. Fake electrolytics?
  152. Oddball Console Amplifier
  153. Transistor phase splitter (Yaqin MC-84L)
  154. Shuguang to stop 845 and 211
  155. first project.
  156. Help on capacitor info...
  157. Se Kt-66
  158. Is there a power supply guru?
  159. Direct Coupling question
  160. What's the best way to hook up an Isolation transformer
  161. Marzio &Jelasi's Direct Coupled SE Amp
  162. 6SN7 or 6SN7GT??
  163. HY40 Power Triode
  164. parallel capacitors in PS question
  165. Looking for feedback on Bottlehead amps
  166. First Watt F3 / Tube Audio Design TAD-125 Hibachi JFET amps
  167. S-5 Push Pull Power Supply Upgrade!
  168. Capacitor voltage rating conversion
  169. Output Transformer Air Gap
  170. PCF80 -Designing a Pentode Constant Current Sink - help needed.
  171. Purity and simplicity of amp design
  172. watt meters
  173. DIY Dynaco ST70
  174. Help need some info on this Raytheon
  175. Isolating parallel feed amplifiers
  176. Please help for B+ problem!
  177. Second Tubelab Simple SE board done
  178. "Sallen-Key" Public domain?
  179. Transformer questions / Good headphones?
  180. Which Spud Amp?
  181. Very simple SE Triode Help
  182. Tube friendly speakers
  183. Counterpoint SA5000 schematic
  184. Yaqin MC-10L
  185. Screen Driven Dissimilar Pentode SE Anti-Triode Spud
  186. Power tube bias increasing with signal.
  187. Preamp suggestion required pls
  188. How to change deemphasis from 75uS to 50uS for Fisher FM100
  189. Which 300B ?
  190. Custom OT for 6C33C tube - any advice
  191. s-5 tube amp hum troubles
  192. Cathode feedback on Mikael's SE KT88?
  193. RCA tube rectifier
  194. 300B Schematic
  195. Tubelab wiring
  196. My first amp!
  197. Building a Aikido preamplifier
  198. Tube rolling causes failure...
  199. Briefly subjected heaters to about 12v by accident.
  200. She lives!
  201. Wilcox Gay 5U
  202. 6EM7 project: maybe use more sand?
  203. 12B4A SET - any critiques on this project?
  204. Heathkit Manual
  205. What is this??
  206. Amp and Speakers decision
  207. Hey guitar joe...
  208. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  209. counterpoint 3.1
  210. good book for learning the basics of tubes and tube amps
  211. Heater circuit - to twist or not to twist
  212. Rock and Flame: Wavebourn Barracuda
  213. Low voltage rectifiers?
  214. Horz Sweep amp Pent or screen drive
  215. Lessons learned building a 5VDC Power Supply for a 300B heater
  216. Getting frustrated--- amps and speakers for the noob
  217. Smallish chassis feasible? Multiple pics
  218. Using a Maida Regulator with a CCS
  219. Which Aikido pre-amp PCB for a newbie?
  220. Newbie wants to build Tubelab SE Monos.
  221. FM transmitter / PA
  222. What value attenuator would you use in front of a 396A in a preamp?
  223. Hybrid OTL Circlotron idea
  224. Heathkit aa-121
  225. Help please checking my B+ design
  226. Selenium rectifiers
  227. isolation transformer - high voltage.
  228. Cathode Bypass in a PP Output Stage
  229. Mcintosh Tube Amplifier Protection Circuit
  230. Where to start? Or: cool these plates down
  231. epiphone pacemaker 50 t
  232. Hum trouble on old PA amp
  233. Crazy newbie tube driver question
  234. UHF tubes for audio?
  235. Suggestion for this tube preamp
  236. PCB Board software?
  237. 300B push pull amp
  238. Simple P-P 84 proto
  239. Keeping cost down?
  240. Tube Amp Kit for newbie
  241. 40% Tap direct to plate
  242. Funny bias problem in PP EL34. Please help
  243. Transformer from Heathkit A-7 amp
  244. Any tube stores in Burnaby, Vancouver, Canada?
  245. B+ time delay circuit - your comments
  246. PCB mount line input transformer question
  247. SRPP circuit question
  248. Russian tubes - what pin material?
  249. Auto-bias - easy to convert to or not?
  250. old style anode/grid caps

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