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  1. Mullard 5-20 schematics
  2. Tube crossover for sub?
  3. Simple tube EQ?
  4. Just a few questions
  5. Tube Preamp for Apox Volume Control
  6. Hammond M3 Tube Amp Project
  7. Ultra linear g2-anode suppress
  8. Vacuum State Electronics FVP5A
  9. Mercury model 2000 tube tester
  10. Schematic of ID of this 6V6/6U8 stereo amp
  11. Operating points for #37 triode
  12. simple line buffer
  13. preamplifier with output transformers
  14. Preamp for guitar - low distortion
  15. F.S:unused tube measurer
  16. Nina Mu Stage Preamp - Circuit and Details
  17. Why are 6V6G(T)'s always black inside?
  18. Please clear this up 805 or pcl805
  19. What happend to svetlana tubes?
  20. penta
  21. 6V6 guitar amp...
  22. Phase splitters: Constant current sources
  23. What do you think bout that???
  24. tube amp recommendation
  25. Want a tube amp. Tell me what should get...
  26. The lego-technics transformer winding setup
  27. Toroid transformers
  28. Hempel
  29. Help on SRPP line amp!
  30. leaking magnetic flux
  31. PS evaluation
  32. Diy Phono stage
  33. Ground on OTL
  34. Transformer Steel Material
  35. mid voltage tubes?
  36. stupid first-timer
  37. az1 rectifier, chokes and caps
  38. backwards transformers
  39. Need help - trying to increase gain by paralleling triode sections
  40. Auricaps
  41. SE 6EM7 amp
  42. Simple EL84
  43. E88CC preamplifier _ I need diagram
  44. Need good 10-20watt design
  45. Does anyone here use active (digital or otherwise) XOs or EQs or...
  46. Tube mic preamp
  47. help with AudioXpress cd-rom
  48. protecting output tubes at startup
  49. 6N2, 6N6, 6N11 - Please help a beginner! (long)
  50. C core output transformer
  51. grounding
  52. Microphone Amp/Mixer
  53. Opinion solicitation / Shameless plug
  54. Sound Difference Old verses New Tubes
  55. Rewiring that EL509
  56. Russell Sadd's transformer design page.
  57. Article on Distortion
  58. wiring a 6ak5w as a triode
  59. Ankoru
  60. Basic Preamplifier (Balanced Output)
  61. DIY 5687 Preamp
  62. New tube project done in a BIG way
  63. Svetlana SV572-10 ???
  64. My boombox on.. tubes. :)
  65. From glass to mylar
  66. Suitable driver for Ultralinear?
  67. choke regulated power supply
  68. 'Battery under cathode' bias - long-term users?
  69. Will russian 6H6P tube work instead of E88CC?
  70. few Qs, pentodes, srpp, ect...
  71. Power Supply Caps
  72. 6072A Line-Amp
  73. Buying output transformers in Germany.
  74. Noob Toob Question
  75. Transformer Question
  76. High Powered 3cx300a1 Tube Amp
  77. Grounded Grid Trafo question
  78. PP 6AS7 "Maurits"
  79. Newbie, Tubeee
  80. Useful link for tube-hounds
  81. Vacuum tude diode help
  82. Long-winded capacitor question
  83. good simple SE circuit please
  84. Curcio or Triode Elec for ST-70 hot rod parts?
  85. 6021w
  86. fvp5 dc output
  87. Transfomer Too hot on my AudioNote 300B kit one
  88. Help Please 11e1 Valve
  89. Rogue 120 Mono Blocks
  90. AutotraxEDA help
  91. 845 class A2??
  92. choke and cap question
  93. 813 or 845 for a SE amplifier
  94. My first tube project
  95. I have some tubes... what can I do with them? :D
  96. Are Balance Controls Still Necessary?
  97. Info on N.E.W equipment?
  98. input stage and driver help!
  99. 6KV6A curves?
  100. low voltage tubes (space charge, etc.) for guitar amp?
  101. Dual mono amp for guitar amp
  102. Wurlitzer schematic needed for a 6420 amp
  103. Parelling Output Tubes
  104. cathode bypass in PP output stage?
  105. diy valve amp
  106. Tube amp, output capacitor and headphones impedance
  107. Tek 465 Scope
  108. Software?
  109. Has anyone tried a 37 tube as a preamp
  110. I found some old tubes. Can I use those?
  111. Whaddayathink? - tube amp kit
  112. Problems Lundahl LL1660 and 6c45 to 6c33 Triode!Need help!
  113. #27 tube for line amp?
  114. Troidal OPT winding
  115. some poor n00b who may have gotten lucky...
  116. Battery preamp, concurrent charging
  117. opt windings, need some help
  118. Dynaco A470 Output Transformers
  119. Cleaning tricks for removing rust
  120. Looking for tube design software.
  121. Super Triode Conection amps - opinions needed
  122. Hammond 300BX Power Transformer
  123. 6G4B SE Amp.
  124. Which is the best for output transformers
  125. Power supply problem
  126. resistor in PS?
  127. type 76 simple preamplifier
  128. Lectron JH50 help
  129. preamp help for newby
  130. Skip 805, what can I do with 6HS5?
  131. Tube Nicknames?
  132. Silicone High temp O-rings as tube dampers
  133. a few questions for my first time
  134. humbucking filter choke - how different?
  135. Pros and Cons of this technique?
  136. World Audio Design KLPP1
  137. effects of resistance mismatch in OT
  138. Tube regulators and noise ?
  139. First Time tube amp - need help
  140. Any Cheap Tube-amp kits out there
  141. Tube buffer using 12AU7
  142. What can i do with 805 triode valves( NOS)
  143. Good tube amp designs for Biamping?!?
  144. 6sn7 NOS tubes with strange white sth on pins
  145. Comments on this design?
  146. Real electronics/audio shops
  147. Beefing up EL34 PP
  148. Oscilloscope Recomendations
  149. Paia tubehead mod's?
  150. How much power for a SE 807 amplifier?
  151. 6c33 Se
  152. PSU capacitor max.voltage question
  153. Diode Question
  154. Tuberolling - Is it for real?
  155. Anybody seen this one?
  156. kt88 subsitute?
  157. Help needed on Mullard EL34PP
  158. help me out if you can
  159. Very Low Voltage Preamp
  160. Would this work?
  161. Help with SRPP pre-
  162. Do different tube rectifiers effect the bass response?
  163. a little intermittent thump...
  164. Heathkit EA-2
  165. My first tube amplifier
  166. CAT LS-1 Pre amp
  167. Wave av-8 hot hot ??
  168. My new multichanel passive balanced pre-amp/solar powerd(tube mode)/remotecontrol.
  169. Books for Tube nOObies...
  170. Cook BN/MN preamp
  171. Autoformers (again??!)
  172. is it busted?
  173. Megahertz Audio transformers
  174. Etf.03
  175. Is a Differential Pair (CCS tail) phase inverter suitable for a Class AB outputstage?
  176. Frank´s pre and Rozenblitz power. Building them.
  177. Hi,grataku,look this!
  178. passive preamp for quadII poweramp
  179. Constant Current Sources in Tube Amps
  180. Any good #26 line amp designs?
  181. Raytheon 5842 datasheet anyone, please
  182. circuit diagram for LMI-32216A RCA ORTHOPHONIC POWER AMPLIFIER
  183. Fun little P-P input stage
  184. Seeking 6AQ5's Curve Chart
  185. Something strange that happened today...
  186. EL84 Push Pull Low Freq Humming.
  187. Whispering and Rustling Leaves
  188. 6L6GC PP Problem
  189. Direct coupling question...
  190. is this transformer ok??
  191. Pre to Power - amp matching
  192. nedd az1 tube base in the UK
  193. Pwer Supply Question
  194. test
  195. Help with hum in AC heaters
  196. "non direct" volume control
  197. Volume control
  198. FINDING 6sn7 DESIGN
  199. Transcendent Sound T16 ?
  200. 300b at 3.35V after bridge replacement
  201. Crucial to match tubes when running PSE?
  202. The Emperor's New Amplifier
  203. SE sound from a P-P amplifier
  204. How does a VAC Renaissance 70/70 get 65W from 4 300Bs?
  205. Opinions about T.A.C. amplifiers?
  206. TRIAD specs. needed!
  207. Can you make 0-5V DC out of 2.5-0-2.5V AC
  208. absoluteli newbie from solid.any seriuos help?
  209. Quality and sound of Lundahl transformers?
  210. Anyone ever tried these output transformers?
  211. B+ delay circuit
  212. Regulated Supplies in Tube Amps
  213. Just fired up my CCS'd ECC99 -> SE 2A3
  214. Tube amp for the car
  215. My plans for this kit, any comment to improve!!!!
  216. Query....CCDA for Mark III
  217. Using a transformer as a filter
  218. Quality of Hammond 300 series power transformers compared to 200 series?
  219. Marantz preamp
  220. Octal Cornet
  221. Raven using Lundahl instead Sowter
  222. Vote NOW for a globe TJ meshplate 45.
  223. Jadis Defy 7 Help!
  224. How do I calculate (or measure) my amp's output impedance?
  225. 6CD6GA for amplifier
  226. Troubleshooting a PP EL34
  227. Hum problem, but on the tweeter (!?)
  228. isolating mounts for transformers
  229. guitar amp
  230. Help with 5692 line amp
  231. needs schematic SLF-1
  232. Which one with lower noise?
  233. 12A tube??
  234. E180F triode-strapped.
  235. Any comment for my new face for all diyer
  236. EL509 Alternatives for this amp
  237. questions about 01A / 483 pre-amp.
  238. Need help evaluating 2A3 transformer coupled designs
  239. Question for Joel (5755/6BQ5)
  240. Sweep tube amp...comments?
  241. How's about a Depletion Mode / Enhancement Mode CCCS
  242. Otl ?
  243. quicksilver 8417 hum
  244. Any Europeans here going to VSAC?
  245. When using a DC filament supply on a DHT...
  246. need single state preamp schmatic.
  247. Help with lowering filament winding voltage.
  248. some schematic questions by newbie help!
  249. Could a filament transformer be used as a grid choke?
  250. Joule electra LA150

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