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  1. epiphone pacemaker 50 t
  2. Hum trouble on old PA amp
  3. Crazy newbie tube driver question
  4. UHF tubes for audio?
  5. Suggestion for this tube preamp
  6. PCB Board software?
  7. 300B push pull amp
  8. Simple P-P 84 proto
  9. Keeping cost down?
  10. Tube Amp Kit for newbie
  11. 40% Tap direct to plate
  12. Funny bias problem in PP EL34. Please help
  13. Transformer from Heathkit A-7 amp
  14. Any tube stores in Burnaby, Vancouver, Canada?
  15. B+ time delay circuit - your comments
  16. PCB mount line input transformer question
  17. SRPP circuit question
  18. Russian tubes - what pin material?
  19. Auto-bias - easy to convert to or not?
  20. old style anode/grid caps
  21. 6H30 Dual Triode
  22. Why would the frequency response vary so much on a pair of Monoblock amps?
  23. Disassembling output transformer
  24. Tube sockets
  25. H. P. Friedrichs
  26. The Rebuilding of Theta KT-88 Tube amp.
  27. Please check my PS pcb board layout for problems????
  28. glass capacitors
  29. Help w/fixing counterpoint Sa7 preamp
  30. IXYS 10M45 CCS IC question
  31. Wing-C 300B tubes and opinions
  32. PX25 DRD Power amp.
  33. rectifier tube recommendation please
  34. 6C33C to more standard triode conversion - any ideas?
  35. PP EL84 Build Questions (Bevois Valley)
  36. Tube line stage output impedance
  37. volume between gain stages
  38. Dyna ST70 PWR Tranny 6.3V Crnt Spec?
  39. Next Project - Darling Amplifier or 45
  40. tube magazines
  41. PSU choke help please
  42. PCB Trace properties for PP tube amplifier ( 12AQ5, 6v6 etc)
  43. TubelabSE phase
  44. EML 300B XLS and Mesh comparison
  45. UL - triode switch
  46. Spud anyone?
  47. Nooo! Almost have this amp built!
  48. Need help - Old cap can ID
  49. 16SL7+6SN7 Aikido
  50. 1600Hz Transformer?
  51. Anyone have a Bogen MX 60 Schematic they can post
  52. mc100b burned up
  53. DC heating, parallel diodes
  54. Identify Amperex Tube?
  55. Which speaker tap when going from UL to triode
  56. Tube wont bias...
  57. DIY stepped attenuator
  58. TV-7/DU KT88 Settings?
  59. Filmosound - Tone Knob - Tertiaries
  60. Hybrid Amp, Tube+MOS FET SE
  61. 3.1 integrated possible?
  62. Plate choke material, why to use amorphous core?
  63. Anything obviously wrong with my mic pre amp ?
  64. K-502 or Yamaha RX-V361 for Klipsch F-1?
  65. Help diagnosing phase-splitter
  66. question about Bruce's GGP preamp
  67. Rickenbacher amp HELP!!!
  68. interpreting max. values listed in datasheet
  69. zenith mlt 15 console record player problem
  70. ORIENTED or Not ORIENTED cores for OPT
  71. Audio Research SP-3-A-1 modified.........
  72. Tube heaters in series.
  73. Output transformer listening impressions?
  74. Tube buffer 6H6P after a DAC
  75. S-5 K16LS in enclosure - Pics
  76. Time to mourn the death of Broskie's Tube CAD blog?
  77. 6N6P preamp
  78. our Preamplifier using 2J27S tubes
  79. dc filament design question
  80. 6AV6A for meter driver
  81. AC wiring heaters, A or B ?
  82. Aikido preamp muting
  83. Help! New Yaoin MC-100B with intermittent crackling noise from speakers
  84. hummming YAHA
  85. leave a variac on all the time!
  86. More triodes
  87. Full Wave Rectifier
  88. Blowing B+ fuse
  89. PSRR of CF w/ CCS Sink
  90. MENG Series "EL34B" Integrated Amplifier
  91. Concertina Parafeed, or How to mess with OldEurope's mind...
  92. Phono stage success!
  93. A few pretty pictures and an ugly picture
  94. Rectifier with slow start up?
  95. Calibrating an emission tester
  96. What is this?
  97. 4XKT88 drive
  98. EL84 driven 2a3
  99. need suggestions for "standarizing" tube gain stages
  100. How long until someone tries
  101. Hickok Photo History - hidden web gem!
  102. Common Audio Tubes in standard use
  103. tango input transformer NN-6
  104. Filmosound dual pot
  105. Hi power Moskido with A/B output Bias
  106. how easy to make tube amp?
  107. metal film resistors or carbon?
  108. Quad II tubes replacement
  109. Sirius & FM
  110. Can someone look at a Counterpoint SA7 for me?
  111. The Wintersweet High-Vividity Project
  112. loftin white 801 amp
  113. Pics of unique design of amp chassis?
  114. Heathkit AA-32 modifications / upgrades
  115. Tango XE-20S Specification
  116. Question about Edcor output transformer
  117. SE EL84 output stage?
  118. New ST-70 Driver board from Blackburn Audio
  119. Transformer primary rating question
  120. Heathkit A7(c?) Rebuild
  121. Rewiring a socket to take 6GK6 instead of 6BQ5
  122. 317 CCS Question
  123. Active filter design software
  124. Larry Moore 10Y Squared
  125. Do you hear “pop” when you turn off your amp?
  126. Filmosound - Guitar - Ground
  127. Simple tube phono stage
  128. Tube phono amp repair/redesign help wanted
  129. Repairing a tape echo with tubes (Dynacord Echocord Super 62a)
  130. tube newbie needs guidance
  131. Interesting linestage optimizing ideas
  132. Powered up my Lafayette 224A for the first time!
  133. Hickok Upgrades
  134. Passive BP filter sim results
  135. 100mA heater tubes for phono
  136. Audiotester + M-audio - info + question
  137. Indestructible HV hybrid regulator!
  138. yet another modified 5-20 amplifier
  139. help with OT for 15 watt tube amp
  140. Power supply for 12SL7 phono preamp
  141. few questions
  142. mystery 5881
  143. does lower B+ cause scratchy distortion?
  144. SY please keep us updated about your site
  145. Cleveland Ohio members?
  146. Scope tricks for detecting rectifier/choke switching
  147. To choke or not to choke
  148. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  149. Convergent Audio Technology (CAT) SL-1 preamplifier
  150. Very low current CCS?
  151. Morgan Jones' E88CC Phono
  152. pse help, unity µ triode as a phase inverter
  153. variable capacitor volume control
  154. What to do with P-P transformer ?
  155. 837 tube for SE Amplifier
  156. calculating transformer current draw question
  157. glass audio 1995 "Single Ended Glory"
  158. Manual for Heathkit AA-121 Power Amp
  159. Low gain triode recommendation plz
  160. Tubelab PP question
  161. Output transformer impedance question
  162. Choke... The side makes difference?
  163. Tubelab...Why "sandy" SE amps?
  164. Fostex Meets Pentode I need some NFB
  165. Oddball Sweep tubes in PP
  166. Noob - where to start?
  167. big doubt: dynakit st35 VS diytube st35clone
  168. Compactron Output Tubes
  169. XPP amp
  170. Tubelab SE ... which 5AR4 ?
  171. Getting only 400 hours on Class A2 PP tube
  172. Pete Millett's 829B amp -> monoblocks
  173. 6JU8A Spec confusion
  174. post on amp design by a newbie
  175. (INDIA) ECC802S/EL84 build, hardware requirements
  176. 6gw8 /ECL86 El Cheapo modifications
  177. Danielak's 300B design
  178. 6080 @ 800µA Question ...
  179. Groundplane layout theory
  180. delay on for 83 mercury vapor
  181. Anyone tried "Weber Copper" SS rectifyers?
  182. Scored a bunch of tubes at HamCon
  183. AB2 Anyone else done similiar
  184. 6v6 pp amplifier
  185. Loud 60 cycle Hum from tube amp.
  186. Building a Preamp
  187. another Big One....:)
  188. JJ factory pictures ...
  189. Good enough CFs
  190. What's a good way to clean tubes w/o taking off the labeling?
  191. 6BX7 or 12B4A for small SE amp?
  192. Schematic collection posted by a kind soul...
  193. Dumb question, but...
  194. Zen Quad 22
  195. I'm baffled -- 6AK6 push-pull amp
  196. pin count question
  197. 1G3 Max Dissapation?
  198. Edcor Transformers
  199. 12EL6 preamp
  200. Request for EICO HF-20 experiences and ideas
  201. So would this work?
  202. A valve pre amp for my disco and electric guitar.
  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. Tubelab SE Parafeed Monoblocks (5 channel)
  212. Can 6AK6's take high voltages?
  213. Tube equal to one section of a 12AX7?
  214. HK 'Deuce front end on G2 drive output stage?
  215. Direct-coupled cathode/source follower driver in PP?
  216. CCS power supply loading..
  217. Photo Gallery -- Simple SE build
  218. Buying vintage good tubes
  219. current tube manufacturers and or brands
  220. PSU with TL783-question
  221. Hashimoto H-20-7U for 6v6 in triode SE..?
  222. Speakers impedance
  223. mesh plate el34 (supereTNT)
  224. Tagboard amps
  225. 807 single ended guitar amp
  226. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  227. 6CL6 vs. 12BY7A
  228. Suggestions for a good tube line amp
  229. 12el6
  230. High Squareness Ratio of a Transformer
  231. What causes a tube to crack?
  232. My 66 Fender bassman tube guitar amp is cutting out intermittently and is making a bl
  233. Ming Da MC-7R transformers for Quad 22 clone.
  234. SimpleSE and Switches
  235. Bias and distortion 6EM7
  236. Need ideas - 6L6GA & 6X5GT
  237. tube microphone preamp design ideas
  238. Firestone Air Chief
  239. Zenith Console find, amp suggestions?
  240. 5842 russian equiv 6S45P or 6C45PI ?
  241. bizarre or good topology idea?
  242. 12 EL6 car preamp
  243. Waxy substance leaking from vintage OPT
  244. Output transformer protection fuses
  245. 5670 SRPP DC coupled to 6S4A
  246. L as last filter element?
  247. Strong cigarette smell in a tube amp
  248. Gas coupling?
  249. Differences between nos Tesla E88CC?
  250. Harmonic parrot food?

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