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  1. simple line buffer
  2. preamplifier with output transformers
  3. Preamp for guitar - low distortion
  4. F.S:unused tube measurer
  5. Nina Mu Stage Preamp - Circuit and Details
  6. Why are 6V6G(T)'s always black inside?
  7. Please clear this up 805 or pcl805
  8. What happend to svetlana tubes?
  9. penta
  10. 6V6 guitar amp...
  11. Phase splitters: Constant current sources
  12. What do you think bout that???
  13. tube amp recommendation
  14. Want a tube amp. Tell me what should get...
  15. The lego-technics transformer winding setup
  16. Toroid transformers
  17. Hempel
  18. Help on SRPP line amp!
  19. leaking magnetic flux
  20. PS evaluation
  21. Diy Phono stage
  22. Ground on OTL
  23. Transformer Steel Material
  24. mid voltage tubes?
  25. stupid first-timer
  26. az1 rectifier, chokes and caps
  27. backwards transformers
  28. Need help - trying to increase gain by paralleling triode sections
  29. Auricaps
  30. SE 6EM7 amp
  31. Simple EL84
  32. E88CC preamplifier _ I need diagram
  33. Need good 10-20watt design
  34. Does anyone here use active (digital or otherwise) XOs or EQs or...
  35. Tube mic preamp
  36. help with AudioXpress cd-rom
  37. protecting output tubes at startup
  38. 6N2, 6N6, 6N11 - Please help a beginner! (long)
  39. C core output transformer
  40. grounding
  41. Microphone Amp/Mixer
  42. Opinion solicitation / Shameless plug
  43. Sound Difference Old verses New Tubes
  44. Rewiring that EL509
  45. Russell Sadd's transformer design page.
  46. Article on Distortion
  47. wiring a 6ak5w as a triode
  48. Ankoru
  49. Basic Preamplifier (Balanced Output)
  50. DIY 5687 Preamp
  51. New tube project done in a BIG way
  52. Svetlana SV572-10 ???
  53. My boombox on.. tubes. :)
  54. From glass to mylar
  55. Suitable driver for Ultralinear?
  56. choke regulated power supply
  57. 'Battery under cathode' bias - long-term users?
  58. Will russian 6H6P tube work instead of E88CC?
  59. few Qs, pentodes, srpp, ect...
  60. Power Supply Caps
  61. 6072A Line-Amp
  62. Buying output transformers in Germany.
  63. Noob Toob Question
  64. Transformer Question
  65. High Powered 3cx300a1 Tube Amp
  66. Grounded Grid Trafo question
  67. PP 6AS7 "Maurits"
  68. Newbie, Tubeee
  69. Useful link for tube-hounds
  70. Vacuum tude diode help
  71. Long-winded capacitor question
  72. good simple SE circuit please
  73. Curcio or Triode Elec for ST-70 hot rod parts?
  74. 6021w
  75. fvp5 dc output
  76. Transfomer Too hot on my AudioNote 300B kit one
  77. Help Please 11e1 Valve
  78. Rogue 120 Mono Blocks
  79. AutotraxEDA help
  80. 845 class A2??
  81. choke and cap question
  82. 813 or 845 for a SE amplifier
  83. My first tube project
  84. I have some tubes... what can I do with them? :D
  85. Are Balance Controls Still Necessary?
  86. Info on N.E.W equipment?
  87. input stage and driver help!
  88. 6KV6A curves?
  89. low voltage tubes (space charge, etc.) for guitar amp?
  90. Dual mono amp for guitar amp
  91. Wurlitzer schematic needed for a 6420 amp
  92. Parelling Output Tubes
  93. cathode bypass in PP output stage?
  94. diy valve amp
  95. Tube amp, output capacitor and headphones impedance
  96. Tek 465 Scope
  97. Software?
  98. Has anyone tried a 37 tube as a preamp
  99. I found some old tubes. Can I use those?
  100. Whaddayathink? - tube amp kit
  101. Problems Lundahl LL1660 and 6c45 to 6c33 Triode!Need help!
  102. #27 tube for line amp?
  103. Troidal OPT winding
  104. some poor n00b who may have gotten lucky...
  105. Battery preamp, concurrent charging
  106. opt windings, need some help
  107. Dynaco A470 Output Transformers
  108. Cleaning tricks for removing rust
  109. Looking for tube design software.
  110. Super Triode Conection amps - opinions needed
  111. Hammond 300BX Power Transformer
  112. 6G4B SE Amp.
  113. Which is the best for output transformers
  114. Power supply problem
  115. resistor in PS?
  116. type 76 simple preamplifier
  117. Lectron JH50 help
  118. preamp help for newby
  119. Skip 805, what can I do with 6HS5?
  120. Tube Nicknames?
  121. Silicone High temp O-rings as tube dampers
  122. a few questions for my first time
  123. humbucking filter choke - how different?
  124. Pros and Cons of this technique?
  125. World Audio Design KLPP1
  126. effects of resistance mismatch in OT
  127. Tube regulators and noise ?
  128. First Time tube amp - need help
  129. Any Cheap Tube-amp kits out there
  130. Tube buffer using 12AU7
  131. What can i do with 805 triode valves( NOS)
  132. Good tube amp designs for Biamping?!?
  133. 6sn7 NOS tubes with strange white sth on pins
  134. Comments on this design?
  135. Real electronics/audio shops
  136. Beefing up EL34 PP
  137. Oscilloscope Recomendations
  138. Paia tubehead mod's?
  139. How much power for a SE 807 amplifier?
  140. 6c33 Se
  141. PSU capacitor max.voltage question
  142. Diode Question
  143. Tuberolling - Is it for real?
  144. Anybody seen this one?
  145. kt88 subsitute?
  146. Help needed on Mullard EL34PP
  147. help me out if you can
  148. Very Low Voltage Preamp
  149. Would this work?
  150. Help with SRPP pre-
  151. Do different tube rectifiers effect the bass response?
  152. a little intermittent thump...
  153. Heathkit EA-2
  154. My first tube amplifier
  155. CAT LS-1 Pre amp
  156. Wave av-8 hot hot ??
  157. My new multichanel passive balanced pre-amp/solar powerd(tube mode)/remotecontrol.
  158. Books for Tube nOObies...
  159. Cook BN/MN preamp
  160. Autoformers (again??!)
  161. is it busted?
  162. Megahertz Audio transformers
  163. Etf.03
  164. Is a Differential Pair (CCS tail) phase inverter suitable for a Class AB outputstage?
  165. Frank´s pre and Rozenblitz power. Building them.
  166. Hi,grataku,look this!
  167. passive preamp for quadII poweramp
  168. Constant Current Sources in Tube Amps
  169. Any good #26 line amp designs?
  170. Raytheon 5842 datasheet anyone, please
  171. circuit diagram for LMI-32216A RCA ORTHOPHONIC POWER AMPLIFIER
  172. Fun little P-P input stage
  173. Seeking 6AQ5's Curve Chart
  174. Something strange that happened today...
  175. EL84 Push Pull Low Freq Humming.
  176. Whispering and Rustling Leaves
  177. 6L6GC PP Problem
  178. Direct coupling question...
  179. is this transformer ok??
  180. Pre to Power - amp matching
  181. nedd az1 tube base in the UK
  182. Pwer Supply Question
  183. test
  184. Help with hum in AC heaters
  185. "non direct" volume control
  186. Volume control
  187. FINDING 6sn7 DESIGN
  188. Transcendent Sound T16 ?
  189. 300b at 3.35V after bridge replacement
  190. Crucial to match tubes when running PSE?
  191. The Emperor's New Amplifier
  192. SE sound from a P-P amplifier
  193. How does a VAC Renaissance 70/70 get 65W from 4 300Bs?
  194. Opinions about T.A.C. amplifiers?
  195. TRIAD specs. needed!
  196. Can you make 0-5V DC out of 2.5-0-2.5V AC
  197. absoluteli newbie from solid.any seriuos help?
  198. Quality and sound of Lundahl transformers?
  199. Anyone ever tried these output transformers?
  200. B+ delay circuit
  201. Regulated Supplies in Tube Amps
  202. Just fired up my CCS'd ECC99 -> SE 2A3
  203. Tube amp for the car
  204. My plans for this kit, any comment to improve!!!!
  205. Query....CCDA for Mark III
  206. Using a transformer as a filter
  207. Quality of Hammond 300 series power transformers compared to 200 series?
  208. Marantz preamp
  209. Octal Cornet
  210. Raven using Lundahl instead Sowter
  211. Vote NOW for a globe TJ meshplate 45.
  212. Jadis Defy 7 Help!
  213. How do I calculate (or measure) my amp's output impedance?
  214. 6CD6GA for amplifier
  215. Troubleshooting a PP EL34
  216. Hum problem, but on the tweeter (!?)
  217. isolating mounts for transformers
  218. guitar amp
  219. Help with 5692 line amp
  220. needs schematic SLF-1
  221. Which one with lower noise?
  222. 12A tube??
  223. E180F triode-strapped.
  224. Any comment for my new face for all diyer
  225. EL509 Alternatives for this amp
  226. questions about 01A / 483 pre-amp.
  227. Need help evaluating 2A3 transformer coupled designs
  228. Question for Joel (5755/6BQ5)
  229. Sweep tube amp...comments?
  230. How's about a Depletion Mode / Enhancement Mode CCCS
  231. Otl ?
  232. quicksilver 8417 hum
  233. Any Europeans here going to VSAC?
  234. When using a DC filament supply on a DHT...
  235. need single state preamp schmatic.
  236. Help with lowering filament winding voltage.
  237. some schematic questions by newbie help!
  238. Could a filament transformer be used as a grid choke?
  239. Joule electra LA150
  240. my first tube amp is running (sort of)- help kill the hum
  241. tube cd output advice
  242. DC to DC converters for tube preamplifier
  243. Cathode follower for a newbie ?
  244. Any info on a Trio AF-220 tuner?
  245. Inpol
  246. Quicksilver 8417
  247. Battery bias below EL84/6BQ5
  248. CCS loaded ECC99 calculations/questions
  249. J.E. Labs 2A3
  250. valve/miniature can hiss