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  1. Battieries for B+
  2. Put amp in chassis, then, right channel doesn't work!
  3. hammond transformers?
  4. Two Rectifiers, One transformer
  5. Tubes currently in production
  6. Rachel's Corner - Shuguang
  7. Small 50C5 Amp improvements
  8. Low voltage pentode?
  9. TX distortion
  10. DIY U-L curves
  11. Transformer spacing
  12. Covers for budget output transformers
  13. Correct for bipolar voltage doubler?
  14. Source for 100uf motor run cap.
  15. magnavox 185aa with 4-6v6
  16. Yaqin 300B re-biasing
  17. Line Amp Diy 6j1
  18. Diy Line Amp£_£_6sn7
  19. Diy Line Amp Audio Note M7
  20. Diy Line Amp Cat Sl-1
  21. Diy Line Amp Malanz 7
  22. Diy Line Amp Htm
  23. Diy Line Amp 5670
  24. Diy Line Amp Jp-80
  25. Quality difference between output transformers
  26. A group-build project for a tube power amp in India
  27. pilot light ideas please
  28. Small signal pentode - zener screen regulation - why not ??
  29. Another KT-88
  30. Rod Coleman filament supply circuit boards
  31. Losing the treble and transient response in this PX25 SE amp
  32. Calculating Zout for Pentode amp with NFB?
  33. Bypassing a volume pot
  34. Lab supply for cathode bias experiment question..
  35. Rheostat for adjustable "fixed" bias?
  36. Output transformer Question
  37. Real Cost of Decware Amplifiers
  38. Digitally driven tube pre-amp
  39. Real cost of Dynaco ST 70 Kits
  40. Fake electrolytics?
  41. Oddball Console Amplifier
  42. Transistor phase splitter (Yaqin MC-84L)
  43. Shuguang to stop 845 and 211
  44. first project.
  45. Se Kt-66
  46. Is there a power supply guru?
  47. Direct Coupling question
  48. What's the best way to hook up an Isolation transformer
  49. Marzio &Jelasi's Direct Coupled SE Amp
  50. 6SN7 or 6SN7GT??
  51. HY40 Power Triode
  52. parallel capacitors in PS question
  53. Looking for feedback on Bottlehead amps
  54. First Watt F3 / Tube Audio Design TAD-125 Hibachi JFET amps
  55. S-5 Push Pull Power Supply Upgrade!
  56. Output Transformer Air Gap
  57. PCF80 -Designing a Pentode Constant Current Sink - help needed.
  58. Purity and simplicity of amp design
  59. watt meters
  60. DIY Dynaco ST70
  61. Help need some info on this Raytheon
  62. Isolating parallel feed amplifiers
  63. Please help for B+ problem!
  64. Second Tubelab Simple SE board done
  65. "Sallen-Key" Public domain?
  66. Transformer questions / Good headphones?
  67. Which Spud Amp?
  68. Very simple SE Triode Help
  69. Tube friendly speakers
  70. Counterpoint SA5000 schematic
  71. Yaqin MC-10L
  72. Screen Driven Dissimilar Pentode SE Anti-Triode Spud
  73. Power tube bias increasing with signal.
  74. Preamp suggestion required pls
  75. How to change deemphasis from 75uS to 50uS for Fisher FM100
  76. Which 300B ?
  77. Custom OT for 6C33C tube - any advice
  78. s-5 tube amp hum troubles
  79. Cathode feedback on Mikael's SE KT88?
  80. RCA tube rectifier
  81. 300B Schematic
  82. Tubelab wiring
  83. My first amp!
  84. Building a Aikido preamplifier
  85. Tube rolling causes failure...
  86. Briefly subjected heaters to about 12v by accident.
  87. She lives!
  88. Wilcox Gay 5U
  89. 6EM7 project: maybe use more sand?
  90. 12B4A SET - any critiques on this project?
  91. Heathkit Manual
  92. What is this??
  93. Amp and Speakers decision
  94. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  95. counterpoint 3.1
  96. good book for learning the basics of tubes and tube amps
  97. Heater circuit - to twist or not to twist
  98. Rock and Flame: Wavebourn Barracuda
  99. Low voltage rectifiers?
  100. Horz Sweep amp Pent or screen drive
  101. Lessons learned building a 5VDC Power Supply for a 300B heater
  102. Getting frustrated--- amps and speakers for the noob
  103. Smallish chassis feasible? Multiple pics
  104. Using a Maida Regulator with a CCS
  105. Which Aikido pre-amp PCB for a newbie?
  106. Newbie wants to build Tubelab SE Monos.
  107. FM transmitter / PA
  108. What value attenuator would you use in front of a 396A in a preamp?
  109. Hybrid OTL Circlotron idea
  110. Heathkit aa-121
  111. Help please checking my B+ design
  112. Selenium rectifiers
  113. isolation transformer - high voltage.
  114. Cathode Bypass in a PP Output Stage
  115. Mcintosh Tube Amplifier Protection Circuit
  116. Where to start? Or: cool these plates down
  117. Hum trouble on old PA amp
  118. Crazy newbie tube driver question
  119. UHF tubes for audio?
  120. Suggestion for this tube preamp
  121. PCB Board software?
  122. 300B push pull amp
  123. Simple P-P 84 proto
  124. Keeping cost down?
  125. Tube Amp Kit for newbie
  126. 40% Tap direct to plate
  127. Funny bias problem in PP EL34. Please help
  128. Transformer from Heathkit A-7 amp
  129. Any tube stores in Burnaby, Vancouver, Canada?
  130. B+ time delay circuit - your comments
  131. PCB mount line input transformer question
  132. SRPP circuit question
  133. Russian tubes - what pin material?
  134. Auto-bias - easy to convert to or not?
  135. old style anode/grid caps
  136. 6H30 Dual Triode
  137. Why would the frequency response vary so much on a pair of Monoblock amps?
  138. Disassembling output transformer
  139. Tube sockets
  140. H. P. Friedrichs
  141. The Rebuilding of Theta KT-88 Tube amp.
  142. Please check my PS pcb board layout for problems????
  143. glass capacitors
  144. Help w/fixing counterpoint Sa7 preamp
  145. IXYS 10M45 CCS IC question
  146. Wing-C 300B tubes and opinions
  147. PX25 DRD Power amp.
  148. rectifier tube recommendation please
  149. 6C33C to more standard triode conversion - any ideas?
  150. PP EL84 Build Questions (Bevois Valley)
  151. Tube line stage output impedance
  152. volume between gain stages
  153. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  154. Next Project - Darling Amplifier or 45
  155. tube magazines
  156. PSU choke help please
  157. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  158. TubelabSE phase
  159. EML 300B XLS and Mesh comparison
  160. UL - triode switch
  161. Spud anyone?
  162. Nooo! Almost have this amp built!
  163. Need help - Old cap can ID
  164. 16SL7+6SN7 Aikido
  165. 1600Hz Transformer?
  166. Anyone have a Bogen MX 60 Schematic they can post
  167. mc100b burned up
  168. DC heating, parallel diodes
  169. Identify Amperex Tube?
  170. Which speaker tap when going from UL to triode
  171. Tube wont bias...
  172. DIY stepped attenuator
  173. TV-7/DU KT88 Settings?
  174. Filmosound - Tone Knob - Tertiaries
  175. Hybrid Amp, Tube+MOS FET SE
  176. 3.1 integrated possible?
  177. Plate choke material, why to use amorphous core?
  178. Anything obviously wrong with my mic pre amp ?
  179. K-502 or Yamaha RX-V361 for Klipsch F-1?
  180. Help diagnosing phase-splitter
  181. question about Bruce's GGP preamp
  182. interpreting max. values listed in datasheet
  183. zenith mlt 15 console record player problem
  184. ORIENTED or Not ORIENTED cores for OPT
  185. Audio Research SP-3-A-1 modified.........
  186. Tube heaters in series.
  187. Output transformer listening impressions?
  188. Tube buffer 6H6P after a DAC
  189. S-5 K16LS in enclosure - Pics
  190. Time to mourn the death of Broskie's Tube CAD blog?
  191. 6N6P preamp
  192. our Preamplifier using 2J27S tubes
  193. dc filament design question
  194. 6AV6A for meter driver
  195. AC wiring heaters, A or B ?
  196. Aikido preamp muting
  197. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  198. hummming YAHA
  199. leave a variac on all the time!
  200. More triodes
  201. Full Wave Rectifier
  202. Blowing B+ fuse
  203. PSRR of CF w/ CCS Sink
  204. MENG Series "EL34B" Integrated Amplifier
  205. Concertina Parafeed, or How to mess with OldEurope's mind...
  206. Phono stage success!
  207. A few pretty pictures and an ugly picture
  208. Rectifier with slow start up?
  209. Calibrating an emission tester
  210. What is this?
  211. 4XKT88 drive
  212. EL84 driven 2a3
  213. need suggestions for "standarizing" tube gain stages
  214. How long until someone tries
  215. Hickok Photo History - hidden web gem!
  216. Common Audio Tubes in standard use
  217. tango input transformer NN-6
  218. Filmosound dual pot
  219. Hi power Moskido with A/B output Bias
  220. how easy to make tube amp?
  221. metal film resistors or carbon?
  222. Quad II tubes replacement
  223. Sirius & FM
  224. Can someone look at a Counterpoint SA7 for me?
  225. The Wintersweet High-Vividity Project
  226. loftin white 801 amp
  227. Pics of unique design of amp chassis?
  228. Heathkit AA-32 modifications / upgrades
  229. Tango XE-20S Specification
  230. Question about Edcor output transformer
  231. SE EL84 output stage?
  232. New ST-70 Driver board from Blackburn Audio
  233. Transformer primary rating question
  234. Heathkit A7(c?) Rebuild
  235. Rewiring a socket to take 6GK6 instead of 6BQ5
  236. 317 CCS Question
  237. Active filter design software
  238. Larry Moore 10Y Squared
  239. Do you hear “pop” when you turn off your amp?
  240. Simple tube phono stage
  241. Tube phono amp repair/redesign help wanted
  242. tube newbie needs guidance
  243. Interesting linestage optimizing ideas
  244. Powered up my Lafayette 224A for the first time!
  245. Hickok Upgrades
  246. Passive BP filter sim results
  247. 100mA heater tubes for phono
  248. Audiotester + M-audio - info + question
  249. Indestructible HV hybrid regulator!
  250. yet another modified 5-20 amplifier

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