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  1. Rh34se?
  2. Ef86, 6n1p & 845pp
  3. HYBRID POWER AMPLIFIER - please help!
  4. 6528 Se
  5. single ended HiFi Regal stereo tube amplifier
  6. Matisse Line Amp
  7. changing longtail
  8. What do you think??????
  9. The amplifier itself whines
  10. DIY repair- replacing capacitors
  11. Benefits of 845B
  12. Counterpoint Preamp Modifications
  13. Humming Sovtek EF86
  14. Output Transformers
  15. RIAA phono stage
  16. The cathode FeedBack in Push-Pull amp
  17. What's a Field Coil Amplifier?
  18. HF filter inductors for signal path
  19. Different tube options for DCMB driver stage?
  20. Crowhurst paper on output xformer search
  21. Tamura inputs trans used as linestage out
  22. Seperate Amp for center channel
  23. Look for UL41 PP Structure!!
  24. Photoelectric valves?
  25. Bell Carrillon tube amp 6V6
  26. Yamamoto Sound Craft A-08 Amplifier
  27. Wanted Radford MA-15
  28. Beyond SET and ParaFeed.... Complementary Current Triode
  29. Too much gain
  30. 2 To 3 Prong Conversion
  31. 6c33 Set
  32. Svetlana MVSZ ---> cheat??
  33. separation of phono power supply for marantz m7 clone
  34. 300b Circuit Mod.
  35. james transformers
  36. ecc preamp schematics please!!!
  37. 845B problem
  38. 150W Garage sale find.
  39. speakers for class A ?
  40. Power Tx core should ground?
  41. First try, Would some one look over.
  42. Global Feedback in Push Pull Amps
  43. Heater voltage circuit change......why please
  44. EICO 147A operators manual
  45. Please Help My Tube Microphones!
  46. Magnetic Circuit Gurus Needed
  47. Tube Blues
  48. end of tube
  49. What is meant by 'Extended Cut-off'?
  50. How is it possible?
  51. best long life for my tube
  52. My first tube amp design...check it out.
  53. Tube driver for a SS power amplifier
  54. HK & world: with Cayin, are tube kits still good value (apart from learning)?
  55. www.thetubecenter.com = reliable?
  56. what do I replace...?
  57. Rectifiers: Tube vs Solid state..
  58. What can I do with 3Q4 Pentode tubes?
  59. DIY Powdered Core Progress Report
  60. PP output transformer grounded or not ?
  61. Bias supply question
  62. Minimum filament voltage for 300B
  63. Is it ok to combine output transformers?
  64. JE labs 2A3 evaluation
  65. 6sn7,6h30,6c33c ?
  66. signal ground and earth ground
  67. Recommended 6SN7 and 6SL7
  68. Question about BAT VK 75
  69. Please,a) cause of high pitched hum, b)DC wires twisted or not
  70. What kind of tube is this
  71. Tube Identification Help Please
  72. Balanced Load Design
  73. "lift off " or "Houston we have a problem"
  74. Anyone wound SE transformer for 6c33c-b?
  75. EL802 driving a 845 ?
  76. Diodes in series and hybrids
  77. Vacuum tube modeling software - beta testers wanted
  78. Parallel Push Pull Drivers
  79. 6V6 in triode connect mode
  80. OPT winding orientation
  81. 6.3v Heater Regulator Schematic
  82. An Important Read
  83. Did a real nice find
  84. New guy with DIY ground ?s--yes, even after searching:D
  85. 5u4g vs 5u4gb
  86. Tube amp volume fluctuation
  87. Bad tube?
  88. 1626's watt?
  89. fellow Hawkeye lookin' for cadman!
  90. Shuagang 2A3C
  91. Parallel SE vs. Single SE Output Question
  92. PP OPT Core dimension
  93. Confirmation of Primary Impedance?
  94. What does a hole on the guide pin of an octal base represent?
  95. Sepp?
  96. 6AS7 lowpower amp?
  97. Dual Mono PSU with shared earth..
  98. Breadboard 6C33C-B S.E.T
  99. audionote schematic wanted !!
  100. DIY Extreme performance Output Transformers - AMSOL
  101. Dressing up Ampex 2012 tube amps
  102. About McIntosh C22 power transformer
  103. it is almost alive
  104. Ef86, 6H30PI and 2 EL34
  105. 7868 tubes in Bogen CHB100
  106. DIY Powdered Iron Tranny Core
  107. Which BG cap best suited for cathode bypass?
  108. Oscillation question- pre or power?
  109. changing (de)coupling cap values
  110. opamp driving tubes
  111. tube 833a
  112. My latest Project (nightmare)
  113. output transformer primary imp. calculation
  114. rogers cadet mk3 hummm.....
  115. Someone help: SE shematic with GK71?
  116. Calling Graham Ingle of black cat electronics
  117. Old Emerson Tube Radio... great find!
  118. E810F in triode
  119. GZ37 replacement?
  120. Bias adjustment question
  121. 6W Self Inverting 6BQ5 Amp
  122. Inductance a problem with wirewound pots?
  123. Fun circuit with a 12ax7 (ecc83)
  124. want to do PP-GM70
  125. spraying the guts of my amp...
  126. How to drop 10v from mains for 300b amp.
  127. SE Output Primary Impedence
  128. Different input valves for KT88
  129. EL84/6BQ5 LUXMAN Amps
  130. Heresy? Replacing tube rectifier w/Weber Copper Cap
  131. Direct Coupled Choke-assisted Mu-stage
  132. Another 845 SE
  133. Is it possible - 6922 Active X-over running with ~ +/- 40V ?
  134. 12FQ8's ?
  135. my first tube site
  136. different measurements
  137. DIY Dyna MK 2's and using bottlehead C4S
  138. Elektor ECL86 RIAA Preamp
  139. ECC88 - upgrading from Teonex - Help ?
  140. B+ problem?
  141. Realistic SAF 24c - Need some help
  142. what is the cap
  143. EAR 509 Mkii manual
  144. Where do you draw the line between tube and sand?
  145. Shinrock transformers
  146. OT: Anybody having problems getting to AA ? nt
  147. how much above B+ will voltage swing in OPT?
  148. bias meter and pot lead length
  149. 211 biasing voltages preferances
  150. Definitely NOT a Loftin-White!!
  151. Val MP 211 info wanted
  152. Look for EL33 PP structure circuit
  153. Rodding Bogen CHB-10A Mono Blocks
  154. two value tube amps for active DIY horns
  155. GEC 912+
  156. soon available as wrist watch.....
  157. Low sensitivity speakers and valvs, no nfb?
  158. Has anyone built this amp?
  159. Difference bewteen ultralinear & triode mode?
  160. 7586 nuvistor
  161. Valve Identification-Help
  162. KT 88 schematic search
  163. Bias the new power tube
  164. 6M6G Structure of the circuit
  165. I Think I Saw Heaven !
  166. Tron Syren
  167. extremely low output
  168. project suggestion with spare trans
  169. cinema amps
  170. c3g producing sparks
  171. Where to get transformer parts?
  172. penta labs
  173. Dynaco ST70 clone
  174. anyone tried the diy paradise simple el84 pp
  175. compression?
  176. 100V trannies as valve OPT
  177. 6bm8 / Ecl82 Pse & Srpp
  178. Lowther LL26 restoration
  179. Can I trust my Valve Tester
  180. (RCA) 6SN7 GTC spec?
  181. re: need help on Counterpoint SA5.1 preamp
  182. Why no CCS in PP output stage?
  183. 811-A amp
  184. DYNACO 120W AMP for DYNA A-451
  185. 35watts el34 amp schematic search ?
  186. tube
  187. My first design. PSE 211 to review.
  188. new 832 tubes?
  189. How to test a tube
  190. 50V line trafos for tube O/P?
  191. Distortion analysis mu follower
  192. the general radio experimenter
  193. resistor value, please
  194. PL519 PP design
  195. Dealers for output irons in EU wanted
  196. Any Twin Power triode Noval type?
  197. ARC SP9 Preamp voltages
  198. Power transformer
  199. OTL for Raven R2
  200. passive preamp (autoformer)
  201. How fragile are Sylvania 10Y tubes?
  202. SE 6SN7/813 direct coupling
  203. Riken Ohm Vs Kiwame
  204. Advantage of Valve Preamp?
  205. SiC Schottky rectifiers.
  206. 30 W from 6c33b?
  207. Built-in bleeder in ASC?
  208. 833 and GU-48
  209. Safety with high volts: 101
  210. Kofi Annan in: "B+... PLUS!!!"
  211. searching for darling tubes.
  212. Audio Research LS8 scheme
  213. My new pp KT88 design
  214. Tubepreamp and Zappulse?
  215. Comments on Transcendent Sound products
  216. regaring 833se
  217. Asc Oil Capacitors
  218. Buy Tubes
  219. Placement of power amp imput resistor
  220. Brimar EL34
  221. Elekit TU-870
  222. Tube amplifier mods
  223. Stromberg-Carlson project
  224. How to design the straight load line for choke loaded tube ?
  225. OPT failure modes
  226. Life of tubes - what to expect?
  227. Profiteering from Gordan Rankin Designs
  228. Gain/Schematic Question
  229. Heath Distortion Measurement Set HD-1
  230. Tube troubleshooting question
  231. Speaker tube amp with headphones
  232. Gain of 6AK5
  233. R vs. RC on secondaries
  234. My simple 5010 amplifiers
  235. constant current sources...
  236. Critical resistors
  237. Digital tube designs?
  238. 2A3 SE Amp
  239. Dact closeout
  240. Mysterious runaway output tube
  241. Ampex 351 Power Transformer
  242. better the Pass camp?
  243. My first tube amp kit.
  244. Plate Resistor
  245. EZ81 tube rectifier
  246. 4K:10K interstage
  247. DIY in New York City
  248. dead project, new life?
  249. Interesting Read On 300B's
  250. Low voltage tubes

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