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  1. DIY 5687 Preamp
  2. New tube project done in a BIG way
  3. Svetlana SV572-10 ???
  4. My boombox on.. tubes. :)
  5. From glass to mylar
  6. Suitable driver for Ultralinear?
  7. choke regulated power supply
  8. 'Battery under cathode' bias - long-term users?
  9. Will russian 6H6P tube work instead of E88CC?
  10. few Qs, pentodes, srpp, ect...
  11. Power Supply Caps
  12. 6072A Line-Amp
  13. Buying output transformers in Germany.
  14. Noob Toob Question
  15. Transformer Question
  16. High Powered 3cx300a1 Tube Amp
  17. Grounded Grid Trafo question
  18. PP 6AS7 "Maurits"
  19. Newbie, Tubeee
  20. Useful link for tube-hounds
  21. Vacuum tude diode help
  22. Long-winded capacitor question
  23. good simple SE circuit please
  24. Curcio or Triode Elec for ST-70 hot rod parts?
  25. 6021w
  26. fvp5 dc output
  27. Transfomer Too hot on my AudioNote 300B kit one
  28. Help Please 11e1 Valve
  29. Rogue 120 Mono Blocks
  30. AutotraxEDA help
  31. 845 class A2??
  32. choke and cap question
  33. 813 or 845 for a SE amplifier
  34. My first tube project
  35. I have some tubes... what can I do with them? :D
  36. Are Balance Controls Still Necessary?
  37. Info on N.E.W equipment?
  38. input stage and driver help!
  39. 6KV6A curves?
  40. low voltage tubes (space charge, etc.) for guitar amp?
  41. Dual mono amp for guitar amp
  42. Wurlitzer schematic needed for a 6420 amp
  43. Parelling Output Tubes
  44. cathode bypass in PP output stage?
  45. diy valve amp
  46. Tube amp, output capacitor and headphones impedance
  47. Tek 465 Scope
  48. Software?
  49. Has anyone tried a 37 tube as a preamp
  50. I found some old tubes. Can I use those?
  51. Whaddayathink? - tube amp kit
  52. Problems Lundahl LL1660 and 6c45 to 6c33 Triode!Need help!
  53. #27 tube for line amp?
  54. Troidal OPT winding
  55. some poor n00b who may have gotten lucky...
  56. Battery preamp, concurrent charging
  57. opt windings, need some help
  58. Dynaco A470 Output Transformers
  59. Cleaning tricks for removing rust
  60. Looking for tube design software.
  61. Super Triode Conection amps - opinions needed
  62. Hammond 300BX Power Transformer
  63. 6G4B SE Amp.
  64. Which is the best for output transformers
  65. Power supply problem
  66. resistor in PS?
  67. type 76 simple preamplifier
  68. Lectron JH50 help
  69. preamp help for newby
  70. Skip 805, what can I do with 6HS5?
  71. Tube Nicknames?
  72. Silicone High temp O-rings as tube dampers
  73. a few questions for my first time
  74. humbucking filter choke - how different?
  75. Pros and Cons of this technique?
  76. World Audio Design KLPP1
  77. effects of resistance mismatch in OT
  78. Tube regulators and noise ?
  79. First Time tube amp - need help
  80. Any Cheap Tube-amp kits out there
  81. Tube buffer using 12AU7
  82. What can i do with 805 triode valves( NOS)
  83. Good tube amp designs for Biamping?!?
  84. 6sn7 NOS tubes with strange white sth on pins
  85. Comments on this design?
  86. Real electronics/audio shops
  87. Beefing up EL34 PP
  88. Oscilloscope Recomendations
  89. Paia tubehead mod's?
  90. How much power for a SE 807 amplifier?
  91. 6c33 Se
  92. PSU capacitor max.voltage question
  93. Diode Question
  94. Tuberolling - Is it for real?
  95. Anybody seen this one?
  96. kt88 subsitute?
  97. Help needed on Mullard EL34PP
  98. help me out if you can
  99. Very Low Voltage Preamp
  100. Would this work?
  101. Help with SRPP pre-
  102. Do different tube rectifiers effect the bass response?
  103. a little intermittent thump...
  104. Heathkit EA-2
  105. My first tube amplifier
  106. CAT LS-1 Pre amp
  107. Wave av-8 hot hot ??
  108. My new multichanel passive balanced pre-amp/solar powerd(tube mode)/remotecontrol.
  109. Books for Tube nOObies...
  110. Cook BN/MN preamp
  111. Autoformers (again??!)
  112. is it busted?
  113. Megahertz Audio transformers
  114. Etf.03
  115. Is a Differential Pair (CCS tail) phase inverter suitable for a Class AB outputstage?
  116. Frank´s pre and Rozenblitz power. Building them.
  117. Hi,grataku,look this!
  118. passive preamp for quadII poweramp
  119. Constant Current Sources in Tube Amps
  120. Any good #26 line amp designs?
  121. Raytheon 5842 datasheet anyone, please
  122. circuit diagram for LMI-32216A RCA ORTHOPHONIC POWER AMPLIFIER
  123. Fun little P-P input stage
  124. Seeking 6AQ5's Curve Chart
  125. Something strange that happened today...
  126. EL84 Push Pull Low Freq Humming.
  127. Whispering and Rustling Leaves
  128. 6L6GC PP Problem
  129. Direct coupling question...
  130. is this transformer ok??
  131. Pre to Power - amp matching
  132. nedd az1 tube base in the UK
  133. Pwer Supply Question
  134. test
  135. Help with hum in AC heaters
  136. "non direct" volume control
  137. Volume control
  138. FINDING 6sn7 DESIGN
  139. Transcendent Sound T16 ?
  140. 300b at 3.35V after bridge replacement
  141. Crucial to match tubes when running PSE?
  142. The Emperor's New Amplifier
  143. SE sound from a P-P amplifier
  144. How does a VAC Renaissance 70/70 get 65W from 4 300Bs?
  145. Opinions about T.A.C. amplifiers?
  146. TRIAD specs. needed!
  147. Can you make 0-5V DC out of 2.5-0-2.5V AC
  148. absoluteli newbie from solid.any seriuos help?
  149. Quality and sound of Lundahl transformers?
  150. Anyone ever tried these output transformers?
  151. B+ delay circuit
  152. Regulated Supplies in Tube Amps
  153. Just fired up my CCS'd ECC99 -> SE 2A3
  154. Tube amp for the car
  155. My plans for this kit, any comment to improve!!!!
  156. Query....CCDA for Mark III
  157. Using a transformer as a filter
  158. Quality of Hammond 300 series power transformers compared to 200 series?
  159. Marantz preamp
  160. Octal Cornet
  161. Raven using Lundahl instead Sowter
  162. Vote NOW for a globe TJ meshplate 45.
  163. Jadis Defy 7 Help!
  164. How do I calculate (or measure) my amp's output impedance?
  165. 6CD6GA for amplifier
  166. Troubleshooting a PP EL34
  167. Hum problem, but on the tweeter (!?)
  168. isolating mounts for transformers
  169. guitar amp
  170. Help with 5692 line amp
  171. needs schematic SLF-1
  172. Which one with lower noise?
  173. 12A tube??
  174. E180F triode-strapped.
  175. Any comment for my new face for all diyer
  176. EL509 Alternatives for this amp
  177. questions about 01A / 483 pre-amp.
  178. Need help evaluating 2A3 transformer coupled designs
  179. Question for Joel (5755/6BQ5)
  180. Sweep tube amp...comments?
  181. How's about a Depletion Mode / Enhancement Mode CCCS
  182. Otl ?
  183. quicksilver 8417 hum
  184. Any Europeans here going to VSAC?
  185. When using a DC filament supply on a DHT...
  186. need single state preamp schmatic.
  187. Help with lowering filament winding voltage.
  188. some schematic questions by newbie help!
  189. Could a filament transformer be used as a grid choke?
  190. Joule electra LA150
  191. my first tube amp is running (sort of)- help kill the hum
  192. tube cd output advice
  193. DC to DC converters for tube preamplifier
  194. Cathode follower for a newbie ?
  195. Any info on a Trio AF-220 tuner?
  196. Inpol
  197. Quicksilver 8417
  198. Battery bias below EL84/6BQ5
  199. CCS loaded ECC99 calculations/questions
  200. J.E. Labs 2A3
  201. valve/miniature can hiss
  202. Photo Gallery
  203. Photo Discussion
  204. Looking for a cheap amp?
  205. Scrap or save?
  206. No Lima show
  207. 6DJ8 Tubes
  208. Amp Photos?
  209. Tekni-fi Tiny Tube RIIA stage
  210. srpp or m-follower?
  211. Elliptron Schematic
  212. 6d22s
  213. Vg=0 distortion
  214. class A S.E. OTL
  215. Power Tube 40?
  216. Designing for guys who like designing
  217. push pull 845
  218. tube rectifier and tda 1543
  219. amp project query
  220. tube matching fixture
  221. rec. for creative ideas for alternative tube amp chassis
  222. Who knows where to get 1200v Silicon Carbide Schottkys ?
  223. Bottlehead questions for a tube neophyte
  224. 6CM7 another tube in disguise?
  225. Mixing SE and push-pull
  226. Interstage resistor question
  227. 6L6GC/EL34 SE Stereo Design
  228. Heater power supply help
  229. 2a3 Se Amp With 5k Opt?
  230. 12B4A Linestage & PSU
  231. Info on VAA-70MKII? Please...
  232. AC Cap for DC use
  233. AC or DC???
  234. 12B4A as tube buffer?
  235. A question of bias...
  236. 6336A valves
  237. a better pentode for less!
  238. Troubleshooting a single ended EL84
  239. Transcendent Sound's T16 OTL
  240. Ear 834
  241. Guitar Tube Amp that uses KT88, 300B, 2A3, else
  242. Anyone ever owned/seen one of these?
  243. topology and PSRR
  244. A few questions
  245. Help Need the VSE SuperReg schematic!
  246. It plays music!!!!
  247. Anybody Has 6b4g Se Power?
  248. Bottlehead gear, buschhorns pics
  249. A new source for SE output transformers?
  250. help troubleshooting this diy pre-amp

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