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  1. Smallish chassis feasible? Multiple pics
  2. Using a Maida Regulator with a CCS
  3. Which Aikido pre-amp PCB for a newbie?
  4. FM transmitter / PA
  5. What value attenuator would you use in front of a 396A in a preamp?
  6. Hybrid OTL Circlotron idea
  7. Heathkit aa-121
  8. Help please checking my B+ design
  9. Selenium rectifiers
  10. isolation transformer - high voltage.
  11. Cathode Bypass in a PP Output Stage
  12. Mcintosh Tube Amplifier Protection Circuit
  13. Where to start? Or: cool these plates down
  14. Hum trouble on old PA amp
  15. Crazy newbie tube driver question
  16. UHF tubes for audio?
  17. Suggestion for this tube preamp
  18. 300B push pull amp
  19. Simple P-P 84 proto
  20. Keeping cost down?
  21. Tube Amp Kit for newbie
  22. 40% Tap direct to plate
  23. Funny bias problem in PP EL34. Please help
  24. Transformer from Heathkit A-7 amp
  25. Any tube stores in Burnaby, Vancouver, Canada?
  26. B+ time delay circuit - your comments
  27. PCB mount line input transformer question
  28. SRPP circuit question
  29. Russian tubes - what pin material?
  30. Auto-bias - easy to convert to or not?
  31. old style anode/grid caps
  32. 6H30 Dual Triode
  33. Why would the frequency response vary so much on a pair of Monoblock amps?
  34. Disassembling output transformer
  35. Tube sockets
  36. H. P. Friedrichs
  37. The Rebuilding of Theta KT-88 Tube amp.
  38. Please check my PS pcb board layout for problems????
  39. Help w/fixing counterpoint Sa7 preamp
  40. IXYS 10M45 CCS IC question
  41. Wing-C 300B tubes and opinions
  42. PX25 DRD Power amp.
  43. rectifier tube recommendation please
  44. 6C33C to more standard triode conversion - any ideas?
  45. PP EL84 Build Questions (Bevois Valley)
  46. Tube line stage output impedance
  47. volume between gain stages
  48. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  49. Next Project - Darling Amplifier or 45
  50. tube magazines
  51. PSU choke help please
  52. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  53. TubelabSE phase
  54. EML 300B XLS and Mesh comparison
  55. UL - triode switch
  56. Spud anyone?
  57. Nooo! Almost have this amp built!
  58. Need help - Old cap can ID
  59. 16SL7+6SN7 Aikido
  60. Anyone have a Bogen MX 60 Schematic they can post
  61. mc100b burned up
  62. DC heating, parallel diodes
  63. Identify Amperex Tube?
  64. Which speaker tap when going from UL to triode
  65. Tube wont bias...
  66. DIY stepped attenuator
  67. TV-7/DU KT88 Settings?
  68. Filmosound - Tone Knob - Tertiaries
  69. Hybrid Amp, Tube+MOS FET SE
  70. 3.1 integrated possible?
  71. Plate choke material, why to use amorphous core?
  72. Anything obviously wrong with my mic pre amp ?
  73. K-502 or Yamaha RX-V361 for Klipsch F-1?
  74. Help diagnosing phase-splitter
  75. question about Bruce's GGP preamp
  76. interpreting max. values listed in datasheet
  77. zenith mlt 15 console record player problem
  78. ORIENTED or Not ORIENTED cores for OPT
  79. Audio Research SP-3-A-1 modified.........
  80. Tube heaters in series.
  81. Output transformer listening impressions?
  82. Tube buffer 6H6P after a DAC
  83. S-5 K16LS in enclosure - Pics
  84. Time to mourn the death of Broskie's Tube CAD blog?
  85. 6N6P preamp
  86. our Preamplifier using 2J27S tubes
  87. dc filament design question
  88. 6AV6A for meter driver
  89. AC wiring heaters, A or B ?
  90. Aikido preamp muting
  91. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  92. hummming YAHA
  93. leave a variac on all the time!
  94. More triodes
  95. Full Wave Rectifier
  96. Blowing B+ fuse
  97. PSRR of CF w/ CCS Sink
  98. MENG Series "EL34B" Integrated Amplifier
  99. Concertina Parafeed, or How to mess with OldEurope's mind...
  100. Phono stage success!
  101. A few pretty pictures and an ugly picture
  102. Rectifier with slow start up?
  103. Calibrating an emission tester
  104. What is this?
  105. 4XKT88 drive
  106. EL84 driven 2a3
  107. need suggestions for "standarizing" tube gain stages
  108. How long until someone tries
  109. Common Audio Tubes in standard use
  110. tango input transformer NN-6
  111. Filmosound dual pot
  112. Hi power Moskido with A/B output Bias
  113. how easy to make tube amp?
  114. metal film resistors or carbon?
  115. Quad II tubes replacement
  116. Sirius & FM
  117. Can someone look at a Counterpoint SA7 for me?
  118. The Wintersweet High-Vividity Project
  119. loftin white 801 amp
  120. Pics of unique design of amp chassis?
  121. Heathkit AA-32 modifications / upgrades
  122. Tango XE-20S Specification
  123. Question about Edcor output transformer
  124. SE EL84 output stage?
  125. New ST-70 Driver board from Blackburn Audio
  126. Transformer primary rating question
  127. Heathkit A7(c?) Rebuild
  128. Rewiring a socket to take 6GK6 instead of 6BQ5
  129. 317 CCS Question
  130. Active filter design software
  131. Larry Moore 10Y Squared
  132. Do you hear “pop” when you turn off your amp?
  133. Simple tube phono stage
  134. Tube phono amp repair/redesign help wanted
  135. tube newbie needs guidance
  136. Interesting linestage optimizing ideas
  137. Powered up my Lafayette 224A for the first time!
  138. Passive BP filter sim results
  139. 100mA heater tubes for phono
  140. Audiotester + M-audio - info + question
  141. Indestructible HV hybrid regulator!
  142. yet another modified 5-20 amplifier
  143. help with OT for 15 watt tube amp
  144. Power supply for 12SL7 phono preamp
  145. few questions
  146. mystery 5881
  147. does lower B+ cause scratchy distortion?
  148. SY please keep us updated about your site
  149. Cleveland Ohio members?
  150. Scope tricks for detecting rectifier/choke switching
  151. To choke or not to choke
  152. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  153. Convergent Audio Technology (CAT) SL-1 preamplifier
  154. Very low current CCS?
  155. Morgan Jones' E88CC Phono
  156. pse help, unity µ triode as a phase inverter
  157. variable capacitor volume control
  158. What to do with P-P transformer ?
  159. 837 tube for SE Amplifier
  160. calculating transformer current draw question
  161. glass audio 1995 "Single Ended Glory"
  162. Manual for Heathkit AA-121 Power Amp
  163. Low gain triode recommendation plz
  164. Output transformer impedance question
  165. Choke... The side makes difference?
  166. Fostex Meets Pentode I need some NFB
  167. Oddball Sweep tubes in PP
  168. Noob - where to start?
  169. big doubt: dynakit st35 VS diytube st35clone
  170. Compactron Output Tubes
  171. XPP amp
  172. Getting only 400 hours on Class A2 PP tube
  173. Pete Millett's 829B amp -> monoblocks
  174. 6JU8A Spec confusion
  175. post on amp design by a newbie
  176. (INDIA) ECC802S/EL84 build, hardware requirements
  177. 6gw8 /ECL86 El Cheapo modifications
  178. Danielak's 300B design
  179. 6080 @ 800µA Question ...
  180. Groundplane layout theory
  181. delay on for 83 mercury vapor
  182. Anyone tried "Weber Copper" SS rectifyers?
  183. Scored a bunch of tubes at HamCon
  184. AB2 Anyone else done similiar
  185. 6v6 pp amplifier
  186. Loud 60 cycle Hum from tube amp.
  187. Building a Preamp
  188. another Big One....:)
  189. JJ factory pictures ...
  190. Good enough CFs
  191. What's a good way to clean tubes w/o taking off the labeling?
  192. 6BX7 or 12B4A for small SE amp?
  193. Schematic collection posted by a kind soul...
  194. Dumb question, but...
  195. Zen Quad 22
  196. I'm baffled -- 6AK6 push-pull amp
  197. pin count question
  198. 1G3 Max Dissapation?
  199. Edcor Transformers
  200. 12EL6 preamp
  201. Request for EICO HF-20 experiences and ideas
  202. So would this work?
  203. Small-signal (or small power) pentode that can handle 400V (or more)?
  204. Are 6GM8's rare?
  205. How to lower mains voltage using resistors
  206. Music angel XD-SE EL34
  207. Potential project for some inherited transformers
  208. Car Tube Amp?
  209. Marantz 7 Preamp
  210. Euridice pramp but with 45
  211. Can 6AK6's take high voltages?
  212. Tube equal to one section of a 12AX7?
  213. HK 'Deuce front end on G2 drive output stage?
  214. Direct-coupled cathode/source follower driver in PP?
  215. CCS power supply loading..
  216. Buying vintage good tubes
  217. current tube manufacturers and or brands
  218. PSU with TL783-question
  219. Hashimoto H-20-7U for 6v6 in triode SE..?
  220. Speakers impedance
  221. mesh plate el34 (supereTNT)
  222. Tagboard amps
  223. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  224. 6CL6 vs. 12BY7A
  225. Suggestions for a good tube line amp
  226. 12el6
  227. High Squareness Ratio of a Transformer
  228. What causes a tube to crack?
  229. Ming Da MC-7R transformers for Quad 22 clone.
  230. SimpleSE and Switches
  231. Bias and distortion 6EM7
  232. Need ideas - 6L6GA & 6X5GT
  233. Firestone Air Chief
  234. Zenith Console find, amp suggestions?
  235. 5842 russian equiv 6S45P or 6C45PI ?
  236. bizarre or good topology idea?
  237. 12 EL6 car preamp
  238. Waxy substance leaking from vintage OPT
  239. Output transformer protection fuses
  240. 5670 SRPP DC coupled to 6S4A
  241. L as last filter element?
  242. Strong cigarette smell in a tube amp
  243. Gas coupling?
  244. Differences between nos Tesla E88CC?
  245. Harmonic parrot food?
  246. Modified 6V6 amp, 350 volt @ 250 K HZ output
  247. best current production el34
  248. Help for correct grounding a Dared VP-845
  249. two 6AL5s as a bridge rectifier
  250. JFET Switching on my tube amp

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