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  1. Oddball Console Amplifier
  2. Transistor phase splitter (Yaqin MC-84L)
  3. Shuguang to stop 845 and 211
  4. first project.
  5. Se Kt-66
  6. Is there a power supply guru?
  7. Direct Coupling question
  8. What's the best way to hook up an Isolation transformer
  9. Marzio &Jelasi's Direct Coupled SE Amp
  10. 6SN7 or 6SN7GT??
  11. HY40 Power Triode
  12. parallel capacitors in PS question
  13. Looking for feedback on Bottlehead amps
  14. First Watt F3 / Tube Audio Design TAD-125 Hibachi JFET amps
  15. S-5 Push Pull Power Supply Upgrade!
  16. Output Transformer Air Gap
  17. PCF80 -Designing a Pentode Constant Current Sink - help needed.
  18. Purity and simplicity of amp design
  19. watt meters
  20. DIY Dynaco ST70
  21. Help need some info on this Raytheon
  22. Isolating parallel feed amplifiers
  23. Please help for B+ problem!
  24. Second Tubelab Simple SE board done
  25. "Sallen-Key" Public domain?
  26. Transformer questions / Good headphones?
  27. Which Spud Amp?
  28. Very simple SE Triode Help
  29. Tube friendly speakers
  30. Counterpoint SA5000 schematic
  31. Yaqin MC-10L
  32. Screen Driven Dissimilar Pentode SE Anti-Triode Spud
  33. Power tube bias increasing with signal.
  34. Preamp suggestion required pls
  35. How to change deemphasis from 75uS to 50uS for Fisher FM100
  36. Which 300B ?
  37. Custom OT for 6C33C tube - any advice
  38. s-5 tube amp hum troubles
  39. Cathode feedback on Mikael's SE KT88?
  40. RCA tube rectifier
  41. 300B Schematic
  42. Tubelab wiring
  43. My first amp!
  44. Building a Aikido preamplifier
  45. Tube rolling causes failure...
  46. Briefly subjected heaters to about 12v by accident.
  47. She lives!
  48. Wilcox Gay 5U
  49. 6EM7 project: maybe use more sand?
  50. 12B4A SET - any critiques on this project?
  51. Heathkit Manual
  52. What is this??
  53. Amp and Speakers decision
  54. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  55. counterpoint 3.1
  56. good book for learning the basics of tubes and tube amps
  57. Heater circuit - to twist or not to twist
  58. Rock and Flame: Wavebourn Barracuda
  59. Low voltage rectifiers?
  60. Horz Sweep amp Pent or screen drive
  61. Lessons learned building a 5VDC Power Supply for a 300B heater
  62. Getting frustrated--- amps and speakers for the noob
  63. Smallish chassis feasible? Multiple pics
  64. Using a Maida Regulator with a CCS
  65. Which Aikido pre-amp PCB for a newbie?
  66. Newbie wants to build Tubelab SE Monos.
  67. FM transmitter / PA
  68. What value attenuator would you use in front of a 396A in a preamp?
  69. Hybrid OTL Circlotron idea
  70. Heathkit aa-121
  71. Help please checking my B+ design
  72. Selenium rectifiers
  73. isolation transformer - high voltage.
  74. Cathode Bypass in a PP Output Stage
  75. Mcintosh Tube Amplifier Protection Circuit
  76. Where to start? Or: cool these plates down
  77. Hum trouble on old PA amp
  78. Crazy newbie tube driver question
  79. UHF tubes for audio?
  80. Suggestion for this tube preamp
  81. PCB Board software?
  82. 300B push pull amp
  83. Simple P-P 84 proto
  84. Keeping cost down?
  85. Tube Amp Kit for newbie
  86. 40% Tap direct to plate
  87. Funny bias problem in PP EL34. Please help
  88. Transformer from Heathkit A-7 amp
  89. Any tube stores in Burnaby, Vancouver, Canada?
  90. B+ time delay circuit - your comments
  91. PCB mount line input transformer question
  92. SRPP circuit question
  93. Russian tubes - what pin material?
  94. Auto-bias - easy to convert to or not?
  95. old style anode/grid caps
  96. 6H30 Dual Triode
  97. Why would the frequency response vary so much on a pair of Monoblock amps?
  98. Disassembling output transformer
  99. Tube sockets
  100. H. P. Friedrichs
  101. The Rebuilding of Theta KT-88 Tube amp.
  102. Please check my PS pcb board layout for problems????
  103. glass capacitors
  104. Help w/fixing counterpoint Sa7 preamp
  105. IXYS 10M45 CCS IC question
  106. Wing-C 300B tubes and opinions
  107. PX25 DRD Power amp.
  108. rectifier tube recommendation please
  109. 6C33C to more standard triode conversion - any ideas?
  110. PP EL84 Build Questions (Bevois Valley)
  111. Tube line stage output impedance
  112. volume between gain stages
  113. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  114. Next Project - Darling Amplifier or 45
  115. tube magazines
  116. PSU choke help please
  117. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  118. TubelabSE phase
  119. EML 300B XLS and Mesh comparison
  120. UL - triode switch
  121. Spud anyone?
  122. Nooo! Almost have this amp built!
  123. Need help - Old cap can ID
  124. 16SL7+6SN7 Aikido
  125. 1600Hz Transformer?
  126. Anyone have a Bogen MX 60 Schematic they can post
  127. mc100b burned up
  128. DC heating, parallel diodes
  129. Identify Amperex Tube?
  130. Which speaker tap when going from UL to triode
  131. Tube wont bias...
  132. DIY stepped attenuator
  133. TV-7/DU KT88 Settings?
  134. Filmosound - Tone Knob - Tertiaries
  135. Hybrid Amp, Tube+MOS FET SE
  136. 3.1 integrated possible?
  137. Plate choke material, why to use amorphous core?
  138. Anything obviously wrong with my mic pre amp ?
  139. K-502 or Yamaha RX-V361 for Klipsch F-1?
  140. Help diagnosing phase-splitter
  141. question about Bruce's GGP preamp
  142. interpreting max. values listed in datasheet
  143. zenith mlt 15 console record player problem
  144. ORIENTED or Not ORIENTED cores for OPT
  145. Audio Research SP-3-A-1 modified.........
  146. Tube heaters in series.
  147. Output transformer listening impressions?
  148. Tube buffer 6H6P after a DAC
  149. S-5 K16LS in enclosure - Pics
  150. Time to mourn the death of Broskie's Tube CAD blog?
  151. 6N6P preamp
  152. our Preamplifier using 2J27S tubes
  153. dc filament design question
  154. 6AV6A for meter driver
  155. AC wiring heaters, A or B ?
  156. Aikido preamp muting
  157. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  158. hummming YAHA
  159. leave a variac on all the time!
  160. More triodes
  161. Full Wave Rectifier
  162. Blowing B+ fuse
  163. PSRR of CF w/ CCS Sink
  164. MENG Series "EL34B" Integrated Amplifier
  165. Concertina Parafeed, or How to mess with OldEurope's mind...
  166. Phono stage success!
  167. A few pretty pictures and an ugly picture
  168. Rectifier with slow start up?
  169. Calibrating an emission tester
  170. What is this?
  171. 4XKT88 drive
  172. EL84 driven 2a3
  173. need suggestions for "standarizing" tube gain stages
  174. How long until someone tries
  175. Hickok Photo History - hidden web gem!
  176. Common Audio Tubes in standard use
  177. tango input transformer NN-6
  178. Filmosound dual pot
  179. Hi power Moskido with A/B output Bias
  180. how easy to make tube amp?
  181. metal film resistors or carbon?
  182. Quad II tubes replacement
  183. Sirius & FM
  184. Can someone look at a Counterpoint SA7 for me?
  185. The Wintersweet High-Vividity Project
  186. loftin white 801 amp
  187. Pics of unique design of amp chassis?
  188. Heathkit AA-32 modifications / upgrades
  189. Tango XE-20S Specification
  190. Question about Edcor output transformer
  191. SE EL84 output stage?
  192. New ST-70 Driver board from Blackburn Audio
  193. Transformer primary rating question
  194. Heathkit A7(c?) Rebuild
  195. Rewiring a socket to take 6GK6 instead of 6BQ5
  196. 317 CCS Question
  197. Active filter design software
  198. Larry Moore 10Y Squared
  199. Do you hear “pop” when you turn off your amp?
  200. Simple tube phono stage
  201. Tube phono amp repair/redesign help wanted
  202. tube newbie needs guidance
  203. Interesting linestage optimizing ideas
  204. Powered up my Lafayette 224A for the first time!
  205. Hickok Upgrades
  206. Passive BP filter sim results
  207. 100mA heater tubes for phono
  208. Audiotester + M-audio - info + question
  209. Indestructible HV hybrid regulator!
  210. yet another modified 5-20 amplifier
  211. help with OT for 15 watt tube amp
  212. Power supply for 12SL7 phono preamp
  213. few questions
  214. mystery 5881
  215. does lower B+ cause scratchy distortion?
  216. SY please keep us updated about your site
  217. Cleveland Ohio members?
  218. Scope tricks for detecting rectifier/choke switching
  219. To choke or not to choke
  220. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  221. Convergent Audio Technology (CAT) SL-1 preamplifier
  222. Very low current CCS?
  223. Morgan Jones' E88CC Phono
  224. pse help, unity µ triode as a phase inverter
  225. variable capacitor volume control
  226. What to do with P-P transformer ?
  227. 837 tube for SE Amplifier
  228. calculating transformer current draw question
  229. glass audio 1995 "Single Ended Glory"
  230. Manual for Heathkit AA-121 Power Amp
  231. Low gain triode recommendation plz
  232. Tubelab PP question
  233. Output transformer impedance question
  234. Choke... The side makes difference?
  235. Tubelab...Why "sandy" SE amps?
  236. Fostex Meets Pentode I need some NFB
  237. Oddball Sweep tubes in PP
  238. big doubt: dynakit st35 VS diytube st35clone
  239. Noob - where to start?
  240. Compactron Output Tubes
  241. XPP amp
  242. Tubelab SE ... which 5AR4 ?
  243. Getting only 400 hours on Class A2 PP tube
  244. Pete Millett's 829B amp -> monoblocks
  245. 6JU8A Spec confusion
  246. post on amp design by a newbie
  247. (INDIA) ECC802S/EL84 build, hardware requirements
  248. 6gw8 /ECL86 El Cheapo modifications
  249. Danielak's 300B design
  250. 6080 @ 800µA Question ...

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