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  1. What would you do with this amp?
  2. tube software
  3. Simple Valve Preamplifier
  4. Current sourced heaters in a CF
  5. Tubes and music styles
  6. Cheap SE EL84
  7. Making a living out of tubes? (A little off-topic)
  8. EL84 matched pairs
  9. Tango XE20S voltage rating?
  10. power transformer heat
  11. Used Tube Amps, second life..
  12. Tubes
  13. Taylor 845
  14. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  15. The DIYHifiSupply.com Joplin amplifier Kit
  16. Berning P-1 Preamp
  17. Which tube for OPT 7,5k SE low watts???
  18. help me with this puzzle...
  19. Univox 1501 Fried Resistors
  20. It makes me wonder ...
  21. Tubes operating in horizontal position
  22. Dewald radio N-803b keep or use parts?
  23. Ongaku
  24. PSU Design question
  25. Primary reactance of a parafeed OPT
  26. Info on IIT interstage trafos?
  27. vt25/10-Y or 45 tube
  28. 2a3, single plate-double plate?
  29. Preferred tube? KT88 vs. EL34
  30. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  31. Parallelling power supply chokes???
  32. Sherwood S7000
  33. please explain plate curves
  34. Triode connected SV6550C with 500V HT
  35. KT88 SE schematic wanted.
  36. 6SN7 based tube buffer
  37. hum measurement
  38. Load of tubes to liquidate
  39. Unhappy with the Lilliput design
  40. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  41. Tube Technology Prophet
  42. Cathode Feedback from Secondary for PP Amp
  43. Zenith Amplifier
  44. Dynaco SCA-35 fixer-upper
  45. Multiple primary power transformer question
  46. Sizing a Regulator
  47. will laziness burn my amp down?!
  48. resistors of a lower power rating
  49. wavy vibrato-like sound when amp cranked
  50. Rh34se?
  51. Ef86, 6n1p & 845pp
  52. HYBRID POWER AMPLIFIER - please help!
  53. 6528 Se
  54. single ended HiFi Regal stereo tube amplifier
  55. Matisse Line Amp
  56. changing longtail
  57. What do you think??????
  58. The amplifier itself whines
  59. DIY repair- replacing capacitors
  60. Benefits of 845B
  61. Counterpoint Preamp Modifications
  62. Humming Sovtek EF86
  63. Output Transformers
  64. RIAA phono stage
  65. The cathode FeedBack in Push-Pull amp
  66. What's a Field Coil Amplifier?
  67. Need help for ampeg tube amp transformers ...
  68. HF filter inductors for signal path
  69. Different tube options for DCMB driver stage?
  70. Crowhurst paper on output xformer search
  71. Tamura inputs trans used as linestage out
  72. Seperate Amp for center channel
  73. Look for UL41 PP Structure!!
  74. Photoelectric valves?
  75. Bell Carrillon tube amp 6V6
  76. Yamamoto Sound Craft A-08 Amplifier
  77. Wanted Radford MA-15
  78. Beyond SET and ParaFeed.... Complementary Current Triode
  79. Too much gain
  80. 2 To 3 Prong Conversion
  81. 6c33 Set
  82. Svetlana MVSZ ---> cheat??
  83. separation of phono power supply for marantz m7 clone
  84. 300b Circuit Mod.
  85. james transformers
  86. ecc preamp schematics please!!!
  87. 845B problem
  88. 150W Garage sale find.
  89. speakers for class A ?
  90. Power Tx core should ground?
  91. First try, Would some one look over.
  92. Global Feedback in Push Pull Amps
  93. Heater voltage circuit change......why please
  94. EICO 147A operators manual
  95. Please Help My Tube Microphones!
  96. Magnetic Circuit Gurus Needed
  97. Tube Blues
  98. end of tube
  99. What is meant by 'Extended Cut-off'?
  100. How is it possible?
  101. best long life for my tube
  102. My first tube amp design...check it out.
  103. Tube driver for a SS power amplifier
  104. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  105. www.thetubecenter.com = reliable?
  106. Lp values for guitar amp OT
  107. what do I replace...?
  108. Rectifiers: Tube vs Solid state..
  109. What can I do with 3Q4 Pentode tubes?
  110. DIY Powdered Core Progress Report
  111. PP output transformer grounded or not ?
  112. Bias supply question
  113. Minimum filament voltage for 300B
  114. Is it ok to combine output transformers?
  115. JE labs 2A3 evaluation
  116. 6sn7,6h30,6c33c ?
  117. signal ground and earth ground
  118. Recommended 6SN7 and 6SL7
  119. Question about BAT VK 75
  120. Please,a) cause of high pitched hum, b)DC wires twisted or not
  121. What kind of tube is this
  122. Tube Identification Help Please
  123. Balanced Load Design
  124. "lift off " or "Houston we have a problem"
  125. Anyone wound SE transformer for 6c33c-b?
  126. EL802 driving a 845 ?
  127. Diodes in series and hybrids
  128. Vacuum tube modeling software - beta testers wanted
  129. Parallel Push Pull Drivers
  130. 6V6 in triode connect mode
  131. OPT winding orientation
  132. 6.3v Heater Regulator Schematic
  133. An Important Read
  134. Did a real nice find
  135. New guy with DIY ground ?s--yes, even after searching:D
  136. 5u4g vs 5u4gb
  137. Tube amp volume fluctuation
  138. Bad tube?
  139. 1626's watt?
  140. fellow Hawkeye lookin' for cadman!
  141. Shuagang 2A3C
  142. Parallel SE vs. Single SE Output Question
  143. PP OPT Core dimension
  144. Confirmation of Primary Impedance?
  145. What does a hole on the guide pin of an octal base represent?
  146. Sepp?
  147. 6AS7 lowpower amp?
  148. Dual Mono PSU with shared earth..
  149. Breadboard 6C33C-B S.E.T
  150. audionote schematic wanted !!
  151. DIY Extreme performance Output Transformers - AMSOL
  152. Dressing up Ampex 2012 tube amps
  153. About McIntosh C22 power transformer
  154. it is almost alive
  155. Ef86, 6H30PI and 2 EL34
  156. 7868 tubes in Bogen CHB100
  157. DIY Powdered Iron Tranny Core
  158. Which BG cap best suited for cathode bypass?
  159. Oscillation question- pre or power?
  160. changing (de)coupling cap values
  161. opamp driving tubes
  162. tube 833a
  163. My latest Project (nightmare)
  164. output transformer primary imp. calculation
  165. rogers cadet mk3 hummm.....
  166. Someone help: SE shematic with GK71?
  167. Calling Graham Ingle of black cat electronics
  168. Old Emerson Tube Radio... great find!
  169. Fender princeton/champ clone
  170. E810F in triode
  171. GZ37 replacement?
  172. Bias adjustment question
  173. 6W Self Inverting 6BQ5 Amp
  174. Inductance a problem with wirewound pots?
  175. Fun circuit with a 12ax7 (ecc83)
  176. want to do PP-GM70
  177. spraying the guts of my amp...
  178. How to drop 10v from mains for 300b amp.
  179. SE Output Primary Impedence
  180. Different input valves for KT88
  181. EL84/6BQ5 LUXMAN Amps
  182. Heresy? Replacing tube rectifier w/Weber Copper Cap
  183. Direct Coupled Choke-assisted Mu-stage
  184. Another 845 SE
  185. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  186. 12FQ8's ?
  187. my first tube site
  188. different measurements
  189. DIY Dyna MK 2's and using bottlehead C4S
  190. Elektor ECL86 RIAA Preamp
  191. ECC88 - upgrading from Teonex - Help ?
  192. B+ problem?
  193. Realistic SAF 24c - Need some help
  194. what is the cap
  195. EAR 509 Mkii manual
  196. Where do you draw the line between tube and sand?
  197. Shinrock transformers
  198. OT: Anybody having problems getting to AA ? nt
  199. how much above B+ will voltage swing in OPT?
  200. bias meter and pot lead length
  201. 211 biasing voltages preferances
  202. Definitely NOT a Loftin-White!!
  203. Val MP 211 info wanted
  204. Look for EL33 PP structure circuit
  205. Rodding Bogen CHB-10A Mono Blocks
  206. two value tube amps for active DIY horns
  207. GEC 912+
  208. soon available as wrist watch.....
  209. Low sensitivity speakers and valvs, no nfb?
  210. Has anyone built this amp?
  211. Difference bewteen ultralinear & triode mode?
  212. 7586 nuvistor
  213. Valve Identification-Help
  214. KT 88 schematic search
  215. Bias the new power tube
  216. 6M6G Structure of the circuit
  217. I Think I Saw Heaven !
  218. Tron Syren
  219. extremely low output
  220. project suggestion with spare trans
  221. cinema amps
  222. c3g producing sparks
  223. Where to get transformer parts?
  224. penta labs
  225. Dynaco ST70 clone
  226. anyone tried the diy paradise simple el84 pp
  227. compression?
  228. 100V trannies as valve OPT
  229. 6bm8 / Ecl82 Pse & Srpp
  230. Lowther LL26 restoration
  231. Can I trust my Valve Tester
  232. (RCA) 6SN7 GTC spec?
  233. re: need help on Counterpoint SA5.1 preamp
  234. Why no CCS in PP output stage?
  235. 811-A amp
  236. DYNACO 120W AMP for DYNA A-451
  237. 35watts el34 amp schematic search ?
  238. tube
  239. My first design. PSE 211 to review.
  240. new 832 tubes?
  241. How to test a tube
  242. 50V line trafos for tube O/P?
  243. Distortion analysis mu follower
  244. the general radio experimenter
  245. resistor value, please
  246. PL519 PP design
  247. Dealers for output irons in EU wanted
  248. Any Twin Power triode Noval type?
  249. ARC SP9 Preamp voltages
  250. Power transformer

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