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  1. Used Tube Amps, second life..
  2. Tubes
  3. Taylor 845
  4. AVO CT-160 Tube Tester - how to remove knobs?? - please help
  5. The DIYHifiSupply.com Joplin amplifier Kit
  6. Berning P-1 Preamp
  7. Which tube for OPT 7,5k SE low watts???
  8. help me with this puzzle...
  9. Univox 1501 Fried Resistors
  10. It makes me wonder ...
  11. Tubes operating in horizontal position
  12. Dewald radio N-803b keep or use parts?
  13. Ongaku
  14. PSU Design question
  15. Primary reactance of a parafeed OPT
  16. Info on IIT interstage trafos?
  17. vt25/10-Y or 45 tube
  18. 2a3, single plate-double plate?
  19. Preferred tube? KT88 vs. EL34
  20. You may laugh..but don't waste your time trying to dissuade me. 300B preamp.
  21. Parallelling power supply chokes???
  22. Sherwood S7000
  23. please explain plate curves
  24. Triode connected SV6550C with 500V HT
  25. KT88 SE schematic wanted.
  26. 6SN7 based tube buffer
  27. hum measurement
  28. Load of tubes to liquidate
  29. Unhappy with the Lilliput design
  30. Halving OPT's pri.imp. by connecting 8ohm load to 16ohm tap - Good/Bad?
  31. Tube Technology Prophet
  32. Cathode Feedback from Secondary for PP Amp
  33. Zenith Amplifier
  34. Dynaco SCA-35 fixer-upper
  35. Multiple primary power transformer question
  36. Sizing a Regulator
  37. will laziness burn my amp down?!
  38. resistors of a lower power rating
  39. wavy vibrato-like sound when amp cranked
  40. Rh34se?
  41. Ef86, 6n1p & 845pp
  42. HYBRID POWER AMPLIFIER - please help!
  43. 6528 Se
  44. single ended HiFi Regal stereo tube amplifier
  45. Matisse Line Amp
  46. changing longtail
  47. What do you think??????
  48. The amplifier itself whines
  49. DIY repair- replacing capacitors
  50. Benefits of 845B
  51. Counterpoint Preamp Modifications
  52. Humming Sovtek EF86
  53. Output Transformers
  54. RIAA phono stage
  55. The cathode FeedBack in Push-Pull amp
  56. What's a Field Coil Amplifier?
  57. Need help for ampeg tube amp transformers ...
  58. HF filter inductors for signal path
  59. Different tube options for DCMB driver stage?
  60. Crowhurst paper on output xformer search
  61. Tamura inputs trans used as linestage out
  62. Seperate Amp for center channel
  63. Look for UL41 PP Structure!!
  64. Photoelectric valves?
  65. Bell Carrillon tube amp 6V6
  66. Yamamoto Sound Craft A-08 Amplifier
  67. Wanted Radford MA-15
  68. Beyond SET and ParaFeed.... Complementary Current Triode
  69. Too much gain
  70. 2 To 3 Prong Conversion
  71. 6c33 Set
  72. Svetlana MVSZ ---> cheat??
  73. separation of phono power supply for marantz m7 clone
  74. 300b Circuit Mod.
  75. james transformers
  76. ecc preamp schematics please!!!
  77. 845B problem
  78. 150W Garage sale find.
  79. speakers for class A ?
  80. Power Tx core should ground?
  81. First try, Would some one look over.
  82. Global Feedback in Push Pull Amps
  83. Heater voltage circuit change......why please
  84. EICO 147A operators manual
  85. Please Help My Tube Microphones!
  86. Magnetic Circuit Gurus Needed
  87. Tube Blues
  88. end of tube
  89. What is meant by 'Extended Cut-off'?
  90. How is it possible?
  91. best long life for my tube
  92. My first tube amp design...check it out.
  93. Tube driver for a SS power amplifier
  94. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  95. www.thetubecenter.com = reliable?
  96. Lp values for guitar amp OT
  97. what do I replace...?
  98. Rectifiers: Tube vs Solid state..
  99. What can I do with 3Q4 Pentode tubes?
  100. DIY Powdered Core Progress Report
  101. PP output transformer grounded or not ?
  102. Bias supply question
  103. Minimum filament voltage for 300B
  104. Is it ok to combine output transformers?
  105. JE labs 2A3 evaluation
  106. 6sn7,6h30,6c33c ?
  107. signal ground and earth ground
  108. Recommended 6SN7 and 6SL7
  109. Question about BAT VK 75
  110. Please,a) cause of high pitched hum, b)DC wires twisted or not
  111. What kind of tube is this
  112. Tube Identification Help Please
  113. Balanced Load Design
  114. "lift off " or "Houston we have a problem"
  115. Anyone wound SE transformer for 6c33c-b?
  116. EL802 driving a 845 ?
  117. Diodes in series and hybrids
  118. Vacuum tube modeling software - beta testers wanted
  119. Parallel Push Pull Drivers
  120. 6V6 in triode connect mode
  121. OPT winding orientation
  122. 6.3v Heater Regulator Schematic
  123. An Important Read
  124. Did a real nice find
  125. New guy with DIY ground ?s--yes, even after searching:D
  126. 5u4g vs 5u4gb
  127. Tube amp volume fluctuation
  128. Bad tube?
  129. 1626's watt?
  130. fellow Hawkeye lookin' for cadman!
  131. Shuagang 2A3C
  132. Parallel SE vs. Single SE Output Question
  133. PP OPT Core dimension
  134. Confirmation of Primary Impedance?
  135. What does a hole on the guide pin of an octal base represent?
  136. Sepp?
  137. 6AS7 lowpower amp?
  138. Dual Mono PSU with shared earth..
  139. Breadboard 6C33C-B S.E.T
  140. audionote schematic wanted !!
  141. DIY Extreme performance Output Transformers - AMSOL
  142. Dressing up Ampex 2012 tube amps
  143. About McIntosh C22 power transformer
  144. it is almost alive
  145. Ef86, 6H30PI and 2 EL34
  146. 7868 tubes in Bogen CHB100
  147. DIY Powdered Iron Tranny Core
  148. Which BG cap best suited for cathode bypass?
  149. Oscillation question- pre or power?
  150. changing (de)coupling cap values
  151. opamp driving tubes
  152. tube 833a
  153. My latest Project (nightmare)
  154. output transformer primary imp. calculation
  155. rogers cadet mk3 hummm.....
  156. Someone help: SE shematic with GK71?
  157. Calling Graham Ingle of black cat electronics
  158. Old Emerson Tube Radio... great find!
  159. Fender princeton/champ clone
  160. E810F in triode
  161. GZ37 replacement?
  162. Bias adjustment question
  163. 6W Self Inverting 6BQ5 Amp
  164. Inductance a problem with wirewound pots?
  165. Fun circuit with a 12ax7 (ecc83)
  166. want to do PP-GM70
  167. spraying the guts of my amp...
  168. How to drop 10v from mains for 300b amp.
  169. SE Output Primary Impedence
  170. Different input valves for KT88
  171. EL84/6BQ5 LUXMAN Amps
  172. Heresy? Replacing tube rectifier w/Weber Copper Cap
  173. Direct Coupled Choke-assisted Mu-stage
  174. Another 845 SE
  175. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  176. 12FQ8's ?
  177. my first tube site
  178. different measurements
  179. DIY Dyna MK 2's and using bottlehead C4S
  180. Elektor ECL86 RIAA Preamp
  181. ECC88 - upgrading from Teonex - Help ?
  182. B+ problem?
  183. Realistic SAF 24c - Need some help
  184. what is the cap
  185. EAR 509 Mkii manual
  186. Where do you draw the line between tube and sand?
  187. Shinrock transformers
  188. OT: Anybody having problems getting to AA ? nt
  189. how much above B+ will voltage swing in OPT?
  190. bias meter and pot lead length
  191. 211 biasing voltages preferances
  192. Definitely NOT a Loftin-White!!
  193. Val MP 211 info wanted
  194. Look for EL33 PP structure circuit
  195. Rodding Bogen CHB-10A Mono Blocks
  196. two value tube amps for active DIY horns
  197. GEC 912+
  198. soon available as wrist watch.....
  199. Low sensitivity speakers and valvs, no nfb?
  200. Has anyone built this amp?
  201. Difference bewteen ultralinear & triode mode?
  202. 7586 nuvistor
  203. Valve Identification-Help
  204. KT 88 schematic search
  205. Bias the new power tube
  206. 6M6G Structure of the circuit
  207. I Think I Saw Heaven !
  208. Tron Syren
  209. extremely low output
  210. project suggestion with spare trans
  211. cinema amps
  212. c3g producing sparks
  213. Where to get transformer parts?
  214. penta labs
  215. Dynaco ST70 clone
  216. anyone tried the diy paradise simple el84 pp
  217. compression?
  218. 100V trannies as valve OPT
  219. 6bm8 / Ecl82 Pse & Srpp
  220. Lowther LL26 restoration
  221. Can I trust my Valve Tester
  222. (RCA) 6SN7 GTC spec?
  223. re: need help on Counterpoint SA5.1 preamp
  224. Why no CCS in PP output stage?
  225. 811-A amp
  226. DYNACO 120W AMP for DYNA A-451
  227. 35watts el34 amp schematic search ?
  228. tube
  229. My first design. PSE 211 to review.
  230. new 832 tubes?
  231. How to test a tube
  232. 50V line trafos for tube O/P?
  233. Distortion analysis mu follower
  234. the general radio experimenter
  235. resistor value, please
  236. PL519 PP design
  237. Dealers for output irons in EU wanted
  238. Any Twin Power triode Noval type?
  239. ARC SP9 Preamp voltages
  240. Power transformer
  241. OTL for Raven R2
  242. passive preamp (autoformer)
  243. How fragile are Sylvania 10Y tubes?
  244. SE 6SN7/813 direct coupling
  245. Riken Ohm Vs Kiwame
  246. Advantage of Valve Preamp?
  247. SiC Schottky rectifiers.
  248. 30 W from 6c33b?
  249. Built-in bleeder in ASC?
  250. 833 and GU-48

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