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  1. Amp and Speakers decision
  2. Hey guitar joe...
  3. Question about Low Impedence Filters on a Bogen PA Head Need Info.
  4. counterpoint 3.1
  5. good book for learning the basics of tubes and tube amps
  6. Heater circuit - to twist or not to twist
  7. Rock and Flame: Wavebourn Barracuda
  8. Low voltage rectifiers?
  9. Horz Sweep amp Pent or screen drive
  10. Lessons learned building a 5VDC Power Supply for a 300B heater
  11. Getting frustrated--- amps and speakers for the noob
  12. Smallish chassis feasible? Multiple pics
  13. Using a Maida Regulator with a CCS
  14. Which Aikido pre-amp PCB for a newbie?
  15. Newbie wants to build Tubelab SE Monos.
  16. FM transmitter / PA
  17. What value attenuator would you use in front of a 396A in a preamp?
  18. Hybrid OTL Circlotron idea
  19. Heathkit aa-121
  20. Help please checking my B+ design
  21. Selenium rectifiers
  22. isolation transformer - high voltage.
  23. Cathode Bypass in a PP Output Stage
  24. Mcintosh Tube Amplifier Protection Circuit
  25. Where to start? Or: cool these plates down
  26. epiphone pacemaker 50 t
  27. Hum trouble on old PA amp
  28. Crazy newbie tube driver question
  29. UHF tubes for audio?
  30. Suggestion for this tube preamp
  31. PCB Board software?
  32. 300B push pull amp
  33. Simple P-P 84 proto
  34. Keeping cost down?
  35. Tube Amp Kit for newbie
  36. 40% Tap direct to plate
  37. Funny bias problem in PP EL34. Please help
  38. Transformer from Heathkit A-7 amp
  39. Any tube stores in Burnaby, Vancouver, Canada?
  40. B+ time delay circuit - your comments
  41. PCB mount line input transformer question
  42. SRPP circuit question
  43. Russian tubes - what pin material?
  44. Auto-bias - easy to convert to or not?
  45. old style anode/grid caps
  46. 6H30 Dual Triode
  47. Why would the frequency response vary so much on a pair of Monoblock amps?
  48. Disassembling output transformer
  49. Tube sockets
  50. H. P. Friedrichs
  51. The Rebuilding of Theta KT-88 Tube amp.
  52. Please check my PS pcb board layout for problems????
  53. glass capacitors
  54. Help w/fixing counterpoint Sa7 preamp
  55. IXYS 10M45 CCS IC question
  56. Wing-C 300B tubes and opinions
  57. PX25 DRD Power amp.
  58. rectifier tube recommendation please
  59. 6C33C to more standard triode conversion - any ideas?
  60. PP EL84 Build Questions (Bevois Valley)
  61. Tube line stage output impedance
  62. volume between gain stages
  63. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  64. Next Project - Darling Amplifier or 45
  65. tube magazines
  66. PSU choke help please
  67. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  68. TubelabSE phase
  69. EML 300B XLS and Mesh comparison
  70. UL - triode switch
  71. Spud anyone?
  72. Nooo! Almost have this amp built!
  73. Need help - Old cap can ID
  74. 16SL7+6SN7 Aikido
  75. 1600Hz Transformer?
  76. Anyone have a Bogen MX 60 Schematic they can post
  77. mc100b burned up
  78. DC heating, parallel diodes
  79. Identify Amperex Tube?
  80. Which speaker tap when going from UL to triode
  81. Tube wont bias...
  82. DIY stepped attenuator
  83. TV-7/DU KT88 Settings?
  84. Filmosound - Tone Knob - Tertiaries
  85. Hybrid Amp, Tube+MOS FET SE
  86. 3.1 integrated possible?
  87. Plate choke material, why to use amorphous core?
  88. Anything obviously wrong with my mic pre amp ?
  89. K-502 or Yamaha RX-V361 for Klipsch F-1?
  90. Help diagnosing phase-splitter
  91. question about Bruce's GGP preamp
  92. Rickenbacher amp HELP!!!
  93. interpreting max. values listed in datasheet
  94. zenith mlt 15 console record player problem
  95. ORIENTED or Not ORIENTED cores for OPT
  96. Audio Research SP-3-A-1 modified.........
  97. Tube heaters in series.
  98. Output transformer listening impressions?
  99. Tube buffer 6H6P after a DAC
  100. S-5 K16LS in enclosure - Pics
  101. Time to mourn the death of Broskie's Tube CAD blog?
  102. 6N6P preamp
  103. our Preamplifier using 2J27S tubes
  104. dc filament design question
  105. 6AV6A for meter driver
  106. AC wiring heaters, A or B ?
  107. Aikido preamp muting
  108. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  109. hummming YAHA
  110. leave a variac on all the time!
  111. More triodes
  112. Full Wave Rectifier
  113. Blowing B+ fuse
  114. PSRR of CF w/ CCS Sink
  115. MENG Series "EL34B" Integrated Amplifier
  116. Concertina Parafeed, or How to mess with OldEurope's mind...
  117. Phono stage success!
  118. A few pretty pictures and an ugly picture
  119. Rectifier with slow start up?
  120. Calibrating an emission tester
  121. What is this?
  122. 4XKT88 drive
  123. EL84 driven 2a3
  124. need suggestions for "standarizing" tube gain stages
  125. How long until someone tries
  126. Hickok Photo History - hidden web gem!
  127. Common Audio Tubes in standard use
  128. tango input transformer NN-6
  129. Filmosound dual pot
  130. Hi power Moskido with A/B output Bias
  131. how easy to make tube amp?
  132. metal film resistors or carbon?
  133. Quad II tubes replacement
  134. Sirius & FM
  135. Can someone look at a Counterpoint SA7 for me?
  136. The Wintersweet High-Vividity Project
  137. loftin white 801 amp
  138. Pics of unique design of amp chassis?
  139. Heathkit AA-32 modifications / upgrades
  140. Tango XE-20S Specification
  141. Question about Edcor output transformer
  142. SE EL84 output stage?
  143. New ST-70 Driver board from Blackburn Audio
  144. Transformer primary rating question
  145. Heathkit A7(c?) Rebuild
  146. Rewiring a socket to take 6GK6 instead of 6BQ5
  147. 317 CCS Question
  148. Active filter design software
  149. Larry Moore 10Y Squared
  150. Do you hear “pop” when you turn off your amp?
  151. Filmosound - Guitar - Ground
  152. Simple tube phono stage
  153. Tube phono amp repair/redesign help wanted
  154. Repairing a tape echo with tubes (Dynacord Echocord Super 62a)
  155. tube newbie needs guidance
  156. Interesting linestage optimizing ideas
  157. Powered up my Lafayette 224A for the first time!
  158. Hickok Upgrades
  159. Passive BP filter sim results
  160. 100mA heater tubes for phono
  161. Audiotester + M-audio - info + question
  162. Indestructible HV hybrid regulator!
  163. yet another modified 5-20 amplifier
  164. help with OT for 15 watt tube amp
  165. Power supply for 12SL7 phono preamp
  166. few questions
  167. mystery 5881
  168. does lower B+ cause scratchy distortion?
  169. SY please keep us updated about your site
  170. Cleveland Ohio members?
  171. Scope tricks for detecting rectifier/choke switching
  172. To choke or not to choke
  173. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  174. Convergent Audio Technology (CAT) SL-1 preamplifier
  175. Very low current CCS?
  176. Morgan Jones' E88CC Phono
  177. pse help, unity µ triode as a phase inverter
  178. variable capacitor volume control
  179. What to do with P-P transformer ?
  180. 837 tube for SE Amplifier
  181. calculating transformer current draw question
  182. glass audio 1995 "Single Ended Glory"
  183. Manual for Heathkit AA-121 Power Amp
  184. Low gain triode recommendation plz
  185. Tubelab PP question
  186. Output transformer impedance question
  187. Choke... The side makes difference?
  188. Tubelab...Why "sandy" SE amps?
  189. Fostex Meets Pentode I need some NFB
  190. Oddball Sweep tubes in PP
  191. Noob - where to start?
  192. big doubt: dynakit st35 VS diytube st35clone
  193. Compactron Output Tubes
  194. XPP amp
  195. Tubelab SE ... which 5AR4 ?
  196. Getting only 400 hours on Class A2 PP tube
  197. Pete Millett's 829B amp -> monoblocks
  198. 6JU8A Spec confusion
  199. post on amp design by a newbie
  200. (INDIA) ECC802S/EL84 build, hardware requirements
  201. 6gw8 /ECL86 El Cheapo modifications
  202. Danielak's 300B design
  203. 6080 @ 800µA Question ...
  204. Groundplane layout theory
  205. delay on for 83 mercury vapor
  206. Anyone tried "Weber Copper" SS rectifyers?
  207. Scored a bunch of tubes at HamCon
  208. AB2 Anyone else done similiar
  209. 6v6 pp amplifier
  210. Loud 60 cycle Hum from tube amp.
  211. Building a Preamp
  212. another Big One....:)
  213. JJ factory pictures ...
  214. Good enough CFs
  215. What's a good way to clean tubes w/o taking off the labeling?
  216. 6BX7 or 12B4A for small SE amp?
  217. Schematic collection posted by a kind soul...
  218. Dumb question, but...
  219. Zen Quad 22
  220. I'm baffled -- 6AK6 push-pull amp
  221. pin count question
  222. 1G3 Max Dissapation?
  223. Edcor Transformers
  224. 12EL6 preamp
  225. Request for EICO HF-20 experiences and ideas
  226. So would this work?
  227. A valve pre amp for my disco and electric guitar.
  228. Small-signal (or small power) pentode that can handle 400V (or more)?
  229. Are 6GM8's rare?
  230. How to lower mains voltage using resistors
  231. Music angel XD-SE EL34
  232. Potential project for some inherited transformers
  233. Car Tube Amp?
  234. Marantz 7 Preamp
  235. Euridice pramp but with 45
  236. Tubelab SE Parafeed Monoblocks (5 channel)
  237. Can 6AK6's take high voltages?
  238. Tube equal to one section of a 12AX7?
  239. HK 'Deuce front end on G2 drive output stage?
  240. Direct-coupled cathode/source follower driver in PP?
  241. CCS power supply loading..
  242. Photo Gallery -- Simple SE build
  243. Buying vintage good tubes
  244. current tube manufacturers and or brands
  245. PSU with TL783-question
  246. Hashimoto H-20-7U for 6v6 in triode SE..?
  247. Speakers impedance
  248. mesh plate el34 (supereTNT)
  249. Tagboard amps
  250. 807 single ended guitar amp

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