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  1. Ken-Rad - same as K-R Tubes inc.? (2 replies)
  2. Re: Cathode follower + Ge diode AM detector + CF (8 replies)
  3. What's the Best Quality 6BQ5? (12 replies)
  4. 45Z3 - Diode Half wave power rectifier (0 replies)
  5. FA : Fisher 400 Service Manual (0 replies)
  6. FA : Western Electric WE205d (0 replies)
  7. FA : 1933 Western Electric Tube Catalog original (0 replies)
  8. FA: Genalex KT-88 Quad, Genalex KT-66 Quad, 10 type triodes. (0 replies)
  9. High-Fidelity AM/BCB receivers/transmitters (Part 15) (0 replies)
  10. * NEW Equipment Reviews! * (0 replies)
  11. Cathode follower + Ge diode AM detector + CF. (6 replies)
  12. Revised Kreisler radiogram. (0 replies)
  13. Need Schematic For Dynaco Stereo 35 (2 replies)
  14. 2A3 SE amp (15 replies)
  15. Pinging Matt Warren (0 replies)
  16. Svetlana EF86 Replacement (NOS): Advice/Opinion (4 replies)
  17. Lafayette LT-80B tuner (3 replies)
  18. FRED NACHBAUR ???????? (42 replies)
  19. Where's Fred ?? (2 replies)
  20. 6C33C-B @ US$11 delivered, 6C33C available too (4 replies)
  21. FS: Raytheon 5842 tubes (0 replies)
  22. FS:EICO 667 tube tester (0 replies)
  23. Anyone have a use for an ECC85? (10 replies)
  24. schematic for Supreme Instruments model 599 tube tester (0 replies)
  25. FA: Vintage Audio Tube Circuits Book (1 replies)
  26. FS Reel To Reel parts (0 replies)
  27. BSR ceramic phono cartrige response. (44 replies)
  28. Improved AM Detector (94 replies)
  29. FS: matched quad Valve Art KT66 $50 + shipping (0 replies)
  30. Sontranic 2300 Valve oscilloscope (0 replies)
  31. THANKS!!!.....for answers to my Dumb Choke Questions! (0 replies)
  32. Fisher 500-C (0 replies)
  33. Fisher 500-C (0 replies)
  34. Where's fred? (12 replies)
  35. Hickok 600A Question (1 replies)
  36. ?:Art Deco Bud box/chassis (2 replies)
  37. FS: EICO 667 tube tester (0 replies)
  38. FS: Raytheon 5842 tubes(4), NOS (0 replies)
  39. Your Tube Catalog (1 replies)
  40. 89 type pentode in push-pull PA? (9 replies)
  41. KT88 or KT90 for scratch built bass amp??? (14 replies)
  42. Fisher FM-90B (1 replies)
  43. Part 15 possibility (was Re: Design and Sell a "New" Tube radio Kit) (0 replies)
  44. List of NOS mostly tubes (3 replies)
  45. FS: JBL LX-2 Crossovers ($100.Pair) (0 replies)
  46. FS: KORTING Radio 941 ("Delmonico") Floorstanding Radio (0 replies)
  47. FS: JENSEN GS-3U "Galaxy III" Subwoofer ($125.) (0 replies)
  48. University Horn Spkrs: Cobreflex II (horn w/ T30 driver)/HF206/N3 ($100.) (0 replies)
  49. FS: Heath A9B Mono Integrated Amp ($100.) (0 replies)
  50. FS: BELL 2200C Mono Integrated Amp ($120.) (0 replies)
  51. Re: Tube life expectancy (3 replies)
  52. Mikkel C. Simonsen's Remote Passive Pre (7 replies)
  53. eBay Scammer REALJAZZCAT Update (29 replies)
  54. FA: Tube Electronics Books (0 replies)
  55. FS: EICO 667 tube tester (0 replies)
  56. Looking for AMC CVT 3030(a) documentation (4 replies)
  57. Need a spec. for Eimac 100T compared to 100TL and 100TH tubes (0 replies)
  58. FS: McIntosh MX110, MC 40, MC 225...... (0 replies)
  59. HICKOK 539B tube tester problem! (2 replies)
  60. WTB: Triplett 3444 tube tester (0 replies)
  61. CURRENT-PRODUCTION 7868! (1 replies)
  62. Sunday's Flea Market Score (2 replies)
  63. FA RCA 12AU7A cleartop tubes/valves (0 replies)
  64. FS: Linn-Syrinx; Fisher Pair; Headamp; Step-up (1 replies)
  65. FS privately: Linn Sondek, Syrinx PU-2; Fisher KX200, FM90B; Ortofon Step Up Transformer; Marcoff PPA-2 Pre Pre (0 replies)
  66. Tube monoblocks reduced on eBay (0 replies)
  67. Buzzing on Luxman LX-33? (10 replies)
  68. Anyone want to unload any SV572-3 tubes? (2 replies)
  69. low level hum in old Fisher console (6 replies)
  70. Some simulation results on various AM detectors (8 replies)
  71. Turner Tuner (21 replies)
  72. FS: SCOTT 345 Stereo Receiver (7591's) (1 replies)
  73. FS: Dyna FM5 Stereo Tuner ($25. + shipping) (0 replies)
  74. FS: Altec-Lansing 412A Speakers (12" Biflex) (0 replies)
  75. AM radio with 2.5 MHz IF. (0 replies)
  76. Re: ground the metal tube cover thing? (1 replies)
  77. 6C33C-B @ US$11 delivered, 6C33C available too (0 replies)
  78. Schaltplan für exotischen Rörenreceiver (2 replies)
  79. FS: Altec A-5 VOT bass cabinets (0 replies)
  80. FA : pair of NOS Mullard CV4004 / 12AX7WA and a pair of 12AT7WA (2 replies)
  81. FA: Tweed Champ Clone 5F1, & 4 Telefunken 12AX7's (0 replies)
  82. Re: AM receievers and tuners,1. (14 replies)
  83. Dynaco PAS-4 (0 replies)
  84. Re: Spice Tube models: free but how to convert? (0 replies)
  85. Anyone using circuitmaker? (4 replies)
  86. Contacting Allen Wright (1 replies)
  87. How to adjust AC balance? (10 replies)
  88. Anyone ever built a switching-mode PSU (20 replies)
  89. AM receivers and tuners. (0 replies)
  90. ===WTB==12SX7'S NEW (0 replies)
  91. Dumb question about line output transformer (3 replies)
  92. Counterpoint SA-3.1 (0 replies)
  93. The Audio Forum - Discussion Forums (0 replies)
  94. FS: Audio Tubes (0 replies)
  95. has anyone built the 6AS7 headphone amp on Headwise? (4 replies)
  96. Q: re RCA 45 players (0 replies)
  97. University 3-way Spkrs (C15W woofers/4409 horn mids & T30 drivers/HF30 horn twtrs & drivers) (0 replies)
  98. FS: JBL S1 Speakers (LE175 Horn Twtrs/LE14A Woofers/LX10 X-overs) (1 replies)
  99. trix valve amp and connections (3 replies)
  100. FA: Great pair of 6550 Monoblocks @ $799 (1 replies)
  101. What is 85 type tube? (7 replies)
  102. Is anybody from Sydney, NSW there? (11 replies)
  103. Small resistance measurement (17 replies)
  104. Tube Amp Comments (2 replies)
  105. FA: QUAD (4x) 6BQ5 /EL84 1950's PHILIPS HOLLAND LAST DAY >NO RESERVE !! (0 replies)
  106. Pilot 590 Pre-amp reciever (0 replies)
  107. Electro-Voice Patrician (3 replies)
  108. Line stage/tone control (1 replies)
  109. Book Review:Troubleshooting, Servicing, and Theory of Am, Fm, and Fm Stereo Receivers (0 replies)
  110. Off Topic Funny Ebay Auction (1 replies)
  111. DUMB Choke Questions: ICAS/CCS Ratings???? (7 replies)
  112. Eico ST-70 Enclosure - reduced to $35 (0 replies)
  113. "Where in Nevada to get my Audio Research VT-100 fixed?" (1 replies)
  114. FA NOS tubes (0 replies)
  115. FA Mullard GZ34 and others (0 replies)
  116. Good Tube Books (4 replies)
  117. FA: Pair Western Electric Oil Fill Capacitors 5uf @ 400 vdc (0 replies)
  118. Another tube DIY project finished (5 replies)
  119. Fisher 400 Receiver: How to Fire up a Just Rebuilt Unit For 1st Time? (3 replies)
  120. Re: Channel-based AM tube tuner (browser problems (16 replies)
  121. Class A PP Inbalance Noise? (4 replies)
  122. ping turner (25 replies)
  123. FA: 25mm LPG Tweeters w/ Silk Domes (1 replies)
  124. Global negative feedback (16 replies)
  125. Marantz 10B photocell/optocoupler substitution (1 replies)
  126. Hi-Fi AM Radio. (56 replies)
  127. FS: JBL LE5-2 Midrange Drivers (5" Alnico) (0 replies)
  128. Dynaco/Joe Curcio (2 replies)
  129. Gas tube regulated bias PS? (8 replies)
  130. Emulated UL tap (6 replies)
  131. Fixed the Plexi copy. (0 replies)
  132. Tatarstan-Russia (2 replies)
  133. FA: Quad (4x) Amperex/Mullard 1950's vintage D-getter halo 6BQ5 / EL84, NO RESERVE !! (0 replies)
  134. F A: Fisher 30A Pair (0 replies)
  135. FA: Pair Western Electric Oil Fill Capacitors 5uf @ 400 vdc (0 replies)
  136. Want to buy Svetlana 572-3 tubes (0 replies)
  137. WTB: Eico HF35 amp (3 replies)
  138. FA: Pair of 60W Ultralinear Tube Amplifiers (2 replies)
  139. FA Mullard GZ34 and others (0 replies)
  140. So... reckon it'll sound better than an 833 (1 replies)
  141. Ping Fred Nachbaur (2 replies)
  142. Luxman SQ 65 ? (14 replies)
  143. FA: Custom Pasternak 60W Mono Tube Amplifier (0 replies)
  144. Help with Sansui SM-320M tuner section (4 replies)
  145. Tube Photo Gallery (0 replies)
  146. Weird Sound Transmission in House (OT) (0 replies)
  147. Weird Sound Transmission in House (OT) (24 replies)
  148. Variations on the channel TRF AM tube tuner; and a question (35 replies)
  149. Linear Concord - Bird cage Amp (2 replies)
  150. Which Generator to Keep? (12 replies)
  151. Re: Constant bandwidth TRF circuit (7 replies)
  152. Fisher 500-C (10 replies)
  153. FA: Various Audio Components (Tang Band, 211 Sockets, Tru-Fidelity) (0 replies)
  154. FS : Eico 667 tube tester (0 replies)
  155. Novice 300B amp (5 replies)
  156. Tube storage and other dumb questions (11 replies)
  157. FS: Dynaco SCA-35 Amplifier (0 replies)
  158. UTC Transformer - Black stuff (1 replies)
  159. SE-40 improvements (3 replies)
  160. Any with a tek 422 scope? (6 replies)
  161. RIP Ray Charles (5 replies)
  162. WTB -- Genalex Gold Lion B749/pair (0 replies)
  163. AM Tube Tuner Kit -- candidate models from yesteryear? (3 replies)
  164. "Cheap" valve amplifiers (6 replies)
  165. FA: (3) 6F6GT Tubes (0 replies)
  166. 'M.E.C. Test' miniature DHT, anyone ID it? (0 replies)
  167. Lord Valve - 7 pin miniature sockets (4 replies)
  168. FA: Various vintage tubes (1 replies)
  169. The emperor's clothes (8 replies)
  170. Test (3 replies)
  171. Any experience with "DIYtube"? (16 replies)
  172. Single frequency (channel) TRF for AM/BCB reception? Candidate Radios of Yesteryear? (10 replies)
  173. Counterpoint SA-5.1 Schematic ? (2 replies)
  174. WTB:Counterpoint SA-5.1 (0 replies)
  175. ''Stereophile Show Report'' (0 replies)
  176. FA: Pilot SA-260 Vintage Stereo Tube Amp (0 replies)
  177. Jim Mc Shane's Email Address. (2 replies)
  178. 6DQ6 vs 6DQ5 ? (Barkhausen effect) (1 replies)
  179. Atma-sphere MP-3 12AU7 to ECC99 mod (5 replies)
  180. FS Quad FM4 Tuner serviced new battery fitted (0 replies)
  181. FS: Heathkit AA-100 parts (1 replies)
  182. Computer CD box as amp Chassis (0 replies)
  183. Interested in high-performance tube-based AM tuner designs (88 replies)
  184. 6LF6 for EICO 667 (2 replies)
  185. Preamp schematic (0 replies)
  186. Vintage Telefunken Triode RS31g (0 replies)
  187. MC240 schematic? (8 replies)
  188. FS: RCA NOS/NIB Audio Tubes (6 replies)
  189. FA: VECTOR Tube Circuit Experimenter's Kit - New In Box (0 replies)
  190. Re: amplifying an audio signal with a photomultiplier? (20 replies)
  191. GR 587-C Speaker Filter ? (1 replies)
  192. Sylvania type 45 vintage audio output tubes (0 replies)
  193. Sunday Smileys.... (1 replies)
  194. Genelex KT-88s Needed (5 replies)
  195. Re: Is there an audio CD player that plays MP3? (4 replies)
  196. I would Like To Correspond With Someone Using a TV-2 Tube Tester (0 replies)
  197. QUESTION ON VOLUME BLEED THRU (0 replies)
  198. Custom-Made SE 2A3 Stereo Amp- Sansui OPTs (1 replies)
  199. FS: Pioneer A1525 Speakers (12" coaxials, 16 ohms) (0 replies)
  200. FS: Scott 345 Stereo Receiver (7591 Outputs) (0 replies)
  201. FS/T: ALTEC LANSING 412A Speakers (Biflex) (0 replies)
  202. FS/T: ALTEC LANSING 412C Speakers (Biflex) (1 replies)
  203. FS/T: Pair of JBL L100 (Century) Speakers (0 replies)
  204. FS/T: Pair of JBL LE8 Speakers (16 Ohms) (2 replies)
  205. FS/T: Pair of JBL LE12C Coaxials (0 replies)
  206. University 3-Way (C15W/4409 + T30/HF30 on horn twtrs/N2A & N2B) (0 replies)
  207. FS: ELECTROVOICE 15TRXB Triaxial Speakers (0 replies)
  208. FS: DYNACO ST-70 Amplifier (0 replies)
  209. FS: JBL L96 Speakers ($250.PAIR) (0 replies)
  210. test settings? (0 replies)
  211. FS: Altec A-5 Bass cabinet (0 replies)
  212. FS: Heathkit TC-2 Tube Tester (0 replies)
  213. FOR SALE: DYNACO PREAMPS (0 replies)
  214. Re: GT 12AX7M (Mullard "repro") - first impressions (21 replies)
  215. treble knob morphs into vol knob?!?! (3 replies)
  216. FA: single Thiel 3.5 w/equalizer (for center or rear surround with other Thiels) (0 replies)
  217. What amp? (HiFi kit question) (9 replies)
  218. Manual for TS-1011/UPM-84 Spectrum-analyser? (1 replies)
  219. More phasing problems... (Guitar amp) (8 replies)
  220. B&K online manuals (0 replies)
  221. Philco 38-10 (1 replies)
  222. FA: Jeff Korneff 76 Preamp (0 replies)
  223. Sockets to Mallory FP cap cans? (8 replies)
  224. FS: matched pair of Mullard CV4004/12AX7 (0 replies)
  225. Tools... (6 replies)
  226. FA: Telefunken 12AX7's, RCA BP 6L6GC's, & Mullard 6V6GT's Tubes (0 replies)
  227. AVO valve tester transmogrification (1 replies)
  228. scrapped my "ugliest tube amp of RAT" and reused the transformerin my tubed DC player (0 replies)
  229. FS:Hickok 533A tube tester (0 replies)
  230. FA: Telefunken 12AX7's, RCA BP 6L6GC's, & Mullard 6V6GT's Tubes (0 replies)
  231. ST-70 trouble (3 replies)
  232. Tube ID (3 replies)
  233. MC Step Up Transformer Wiring (1 replies)
  234. (no subject) (4 replies)
  235. FA Mullard E80CC GZ34 (0 replies)
  236. How much will a GTA se-40 improve with mods? What power tubes? (4 replies)
  237. FA: Tung-Sol 5881 Amplifier Tubes (0 replies)
  238. Ebay: Germanium PNP (0 replies)
  239. FS: Eico 667 tube tester (0 replies)
  240. FS Dynaco Mark II power amp (0 replies)
  241. Mullard DK92 (1 replies)
  242. PING: ksmolles (0 replies)
  243. 6J7-EF36 in phono stages (4 replies)
  244. Recommendation for a CD Player? (5 replies)
  245. sonic benefit of a Tubed- over SS Power supply (6 replies)
  246. Schemes of old Russian tube Units - updated! (1 replies)
  247. WTB: Single Heath W-1 Amp (807 output tubes) (0 replies)
  248. FA Mullard GZ34 (1 replies)
  249. HP 3580A Analyzer question (1 replies)
  250. WTB/T: (1)MCINTOSH A116 or A116-B Amp (0 replies)