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  1. Which Spud Amp?
  2. Very simple SE Triode Help
  3. Tube friendly speakers
  4. Counterpoint SA5000 schematic
  5. Yaqin MC-10L
  6. Screen Driven Dissimilar Pentode SE Anti-Triode Spud
  7. Power tube bias increasing with signal.
  8. Preamp suggestion required pls
  9. How to change deemphasis from 75uS to 50uS for Fisher FM100
  10. Which 300B ?
  11. Custom OT for 6C33C tube - any advice
  12. s-5 tube amp hum troubles
  13. Cathode feedback on Mikael's SE KT88?
  14. RCA tube rectifier
  15. 300B Schematic
  16. Tubelab wiring
  17. My first amp!
  18. Building a Aikido preamplifier
  19. Tube rolling causes failure...
  20. Briefly subjected heaters to about 12v by accident.
  21. She lives!
  22. Wilcox Gay 5U
  23. 6EM7 project: maybe use more sand?
  24. 12B4A SET - any critiques on this project?
  25. Heathkit Manual
  26. What is this??
  27. Amp and Speakers decision
  28. Hey guitar joe...
  29. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  30. counterpoint 3.1
  31. good book for learning the basics of tubes and tube amps
  32. Heater circuit - to twist or not to twist
  33. Rock and Flame: Wavebourn Barracuda
  34. Low voltage rectifiers?
  35. Horz Sweep amp Pent or screen drive
  36. Lessons learned building a 5VDC Power Supply for a 300B heater
  37. Getting frustrated--- amps and speakers for the noob
  38. Smallish chassis feasible? Multiple pics
  39. Using a Maida Regulator with a CCS
  40. Which Aikido pre-amp PCB for a newbie?
  41. Newbie wants to build Tubelab SE Monos.
  42. FM transmitter / PA
  43. What value attenuator would you use in front of a 396A in a preamp?
  44. Hybrid OTL Circlotron idea
  45. Heathkit aa-121
  46. Help please checking my B+ design
  47. Selenium rectifiers
  48. isolation transformer - high voltage.
  49. Cathode Bypass in a PP Output Stage
  50. Mcintosh Tube Amplifier Protection Circuit
  51. Where to start? Or: cool these plates down
  52. epiphone pacemaker 50 t
  53. Hum trouble on old PA amp
  54. Crazy newbie tube driver question
  55. UHF tubes for audio?
  56. Suggestion for this tube preamp
  57. PCB Board software?
  58. 300B push pull amp
  59. Simple P-P 84 proto
  60. Keeping cost down?
  61. Tube Amp Kit for newbie
  62. 40% Tap direct to plate
  63. Funny bias problem in PP EL34. Please help
  64. Transformer from Heathkit A-7 amp
  65. Any tube stores in Burnaby, Vancouver, Canada?
  66. B+ time delay circuit - your comments
  67. PCB mount line input transformer question
  68. SRPP circuit question
  69. Russian tubes - what pin material?
  70. Auto-bias - easy to convert to or not?
  71. old style anode/grid caps
  72. 6H30 Dual Triode
  73. Why would the frequency response vary so much on a pair of Monoblock amps?
  74. Disassembling output transformer
  75. Tube sockets
  76. H. P. Friedrichs
  77. The Rebuilding of Theta KT-88 Tube amp.
  78. Please check my PS pcb board layout for problems????
  79. glass capacitors
  80. Help w/fixing counterpoint Sa7 preamp
  81. IXYS 10M45 CCS IC question
  82. Wing-C 300B tubes and opinions
  83. PX25 DRD Power amp.
  84. rectifier tube recommendation please
  85. 6C33C to more standard triode conversion - any ideas?
  86. PP EL84 Build Questions (Bevois Valley)
  87. Tube line stage output impedance
  88. volume between gain stages
  89. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  90. Next Project - Darling Amplifier or 45
  91. tube magazines
  92. PSU choke help please
  93. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  94. TubelabSE phase
  95. EML 300B XLS and Mesh comparison
  96. UL - triode switch
  97. Spud anyone?
  98. Nooo! Almost have this amp built!
  99. Need help - Old cap can ID
  100. 16SL7+6SN7 Aikido
  101. 1600Hz Transformer?
  102. Anyone have a Bogen MX 60 Schematic they can post
  103. mc100b burned up
  104. DC heating, parallel diodes
  105. Identify Amperex Tube?
  106. Which speaker tap when going from UL to triode
  107. Tube wont bias...
  108. DIY stepped attenuator
  109. TV-7/DU KT88 Settings?
  110. Filmosound - Tone Knob - Tertiaries
  111. Hybrid Amp, Tube+MOS FET SE
  112. 3.1 integrated possible?
  113. Plate choke material, why to use amorphous core?
  114. Anything obviously wrong with my mic pre amp ?
  115. K-502 or Yamaha RX-V361 for Klipsch F-1?
  116. Help diagnosing phase-splitter
  117. question about Bruce's GGP preamp
  118. Rickenbacher amp HELP!!!
  119. interpreting max. values listed in datasheet
  120. zenith mlt 15 console record player problem
  121. ORIENTED or Not ORIENTED cores for OPT
  122. Audio Research SP-3-A-1 modified.........
  123. Tube heaters in series.
  124. Output transformer listening impressions?
  125. Tube buffer 6H6P after a DAC
  126. S-5 K16LS in enclosure - Pics
  127. Time to mourn the death of Broskie's Tube CAD blog?
  128. 6N6P preamp
  129. our Preamplifier using 2J27S tubes
  130. dc filament design question
  131. 6AV6A for meter driver
  132. AC wiring heaters, A or B ?
  133. Aikido preamp muting
  134. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  135. hummming YAHA
  136. leave a variac on all the time!
  137. More triodes
  138. Full Wave Rectifier
  139. Blowing B+ fuse
  140. PSRR of CF w/ CCS Sink
  141. MENG Series "EL34B" Integrated Amplifier
  142. Concertina Parafeed, or How to mess with OldEurope's mind...
  143. Phono stage success!
  144. A few pretty pictures and an ugly picture
  145. Rectifier with slow start up?
  146. Calibrating an emission tester
  147. What is this?
  148. 4XKT88 drive
  149. EL84 driven 2a3
  150. need suggestions for "standarizing" tube gain stages
  151. How long until someone tries
  152. Hickok Photo History - hidden web gem!
  153. Common Audio Tubes in standard use
  154. tango input transformer NN-6
  155. Filmosound dual pot
  156. Hi power Moskido with A/B output Bias
  157. how easy to make tube amp?
  158. metal film resistors or carbon?
  159. Quad II tubes replacement
  160. Sirius & FM
  161. Can someone look at a Counterpoint SA7 for me?
  162. The Wintersweet High-Vividity Project
  163. loftin white 801 amp
  164. Pics of unique design of amp chassis?
  165. Heathkit AA-32 modifications / upgrades
  166. Tango XE-20S Specification
  167. Question about Edcor output transformer
  168. SE EL84 output stage?
  169. New ST-70 Driver board from Blackburn Audio
  170. Transformer primary rating question
  171. Heathkit A7(c?) Rebuild
  172. Rewiring a socket to take 6GK6 instead of 6BQ5
  173. 317 CCS Question
  174. Active filter design software
  175. Larry Moore 10Y Squared
  176. Do you hear “pop” when you turn off your amp?
  177. Filmosound - Guitar - Ground
  178. Simple tube phono stage
  179. Tube phono amp repair/redesign help wanted
  180. Repairing a tape echo with tubes (Dynacord Echocord Super 62a)
  181. tube newbie needs guidance
  182. Interesting linestage optimizing ideas
  183. Powered up my Lafayette 224A for the first time!
  184. Hickok Upgrades
  185. Passive BP filter sim results
  186. 100mA heater tubes for phono
  187. Audiotester + M-audio - info + question
  188. Indestructible HV hybrid regulator!
  189. yet another modified 5-20 amplifier
  190. help with OT for 15 watt tube amp
  191. Power supply for 12SL7 phono preamp
  192. few questions
  193. mystery 5881
  194. does lower B+ cause scratchy distortion?
  195. SY please keep us updated about your site
  196. Cleveland Ohio members?
  197. Scope tricks for detecting rectifier/choke switching
  198. To choke or not to choke
  199. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  200. Convergent Audio Technology (CAT) SL-1 preamplifier
  201. Very low current CCS?
  202. Morgan Jones' E88CC Phono
  203. pse help, unity µ triode as a phase inverter
  204. variable capacitor volume control
  205. What to do with P-P transformer ?
  206. 837 tube for SE Amplifier
  207. calculating transformer current draw question
  208. glass audio 1995 "Single Ended Glory"
  209. Manual for Heathkit AA-121 Power Amp
  210. Low gain triode recommendation plz
  211. Tubelab PP question
  212. Output transformer impedance question
  213. Choke... The side makes difference?
  214. Tubelab...Why "sandy" SE amps?
  215. Fostex Meets Pentode I need some NFB
  216. Oddball Sweep tubes in PP
  217. Noob - where to start?
  218. big doubt: dynakit st35 VS diytube st35clone
  219. Compactron Output Tubes
  220. XPP amp
  221. Tubelab SE ... which 5AR4 ?
  222. Getting only 400 hours on Class A2 PP tube
  223. Pete Millett's 829B amp -> monoblocks
  224. 6JU8A Spec confusion
  225. post on amp design by a newbie
  226. (INDIA) ECC802S/EL84 build, hardware requirements
  227. 6gw8 /ECL86 El Cheapo modifications
  228. Danielak's 300B design
  229. 6080 @ 800µA Question ...
  230. Groundplane layout theory
  231. delay on for 83 mercury vapor
  232. Anyone tried "Weber Copper" SS rectifyers?
  233. Scored a bunch of tubes at HamCon
  234. AB2 Anyone else done similiar
  235. 6v6 pp amplifier
  236. Loud 60 cycle Hum from tube amp.
  237. Building a Preamp
  238. another Big One....:)
  239. JJ factory pictures ...
  240. Good enough CFs
  241. What's a good way to clean tubes w/o taking off the labeling?
  242. 6BX7 or 12B4A for small SE amp?
  243. Schematic collection posted by a kind soul...
  244. Dumb question, but...
  245. Zen Quad 22
  246. I'm baffled -- 6AK6 push-pull amp
  247. pin count question
  248. 1G3 Max Dissapation?
  249. Edcor Transformers
  250. 12EL6 preamp

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