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  1. 8156's
  2. Can't get anything from my new pre-amp
  3. Bottlehead Paramount Question
  4. need help with ac/dc am/fm radio
  5. Peculiar oscillation
  6. ECC83 settings for Taylor 45C
  7. New Jolida 302b amp owner questions
  8. Help with gyrator
  9. Some basic questions...
  10. I have a hard one for you guys
  11. CCS pulsing oscillation problem
  12. tube testers: different gM standards for same tube?
  13. Frank's Pre Still In Vogue?
  14. Home made tube amps
  15. Source for SED "winged C" tubes?
  16. Preamp Help
  17. Push Pull Class A
  18. Multi-Ways Output Transformers
  19. Redplating anomaly?
  20. Just for fun power poll!
  21. Biasing a Jadis Orchestra
  22. Yaqin MC-50L
  23. CJ PV5 Upgrades?
  24. New Member - Magnavox Amps
  25. Double parafeed
  26. 6550 grid characteristic help please
  27. Newbie- Tube Testing RF Amp tube
  28. Urgent:Wrongly order 220V Power supply for 230V enviroment
  29. Mono sub-out from one trafo?
  30. Mu Follower to drive a Push-Pull Amplifier?
  31. The 6934A Triode Tube
  32. Constant current sink for 6SN7
  33. 6V6 high voltage
  34. VTL deluxe 100 monoblk (KT88) need help?
  35. Va,Ia exeed limiting values in datasheeds ?
  36. Old DIYtube ST-35 electrolytics - swap?
  37. What Hammond for UK?
  38. What would you build with this transformer set?
  39. EL86 / 6CW5 + 6BQ7A amp design
  40. Western Electric theater amplifiers; how to hook them up?
  41. 12AU7,12B4A PSE schematic needs finishing!
  42. Dual grid and plate pins
  43. Best sounding ECC83 ?
  44. tube output for Playstation 1
  45. 6GX8 as Audio Level Indicator?
  46. help on 12AU7 Preamp circuit
  47. Anyone bought tubes from http://www.nostubestore.com/ ?
  48. Tube pre-amp with exposed tubes?
  49. Using low voltage lamp in power supply
  50. GU 50 monoblock
  51. KT-88 Push Pull with CFB
  52. 12AX7 + ?? Ideas 2A3 // 6L6
  53. Formula for driver current requirement ?
  54. Need a little help with a regulator circuit if you are willing.
  55. Troubleshooting help for 12AQ5 amp
  56. Can anyone help with an ef86 tape preamp mod please?
  57. Herald Amp
  58. To switch B+ or not?
  59. All-tube vs tube/mosfet hybrid ?
  60. 6c33c-b question
  61. 12AT7 substitutes?
  62. 1st project salvaged sears receiver iron need good amp schematic
  63. FM-3 ? About parts replacement in IF stages
  64. simple EL84 parallel?
  65. Finished: Claus Byrtih EL34 amplifier on Isophon BS35 speaker set
  66. Bogen CHB100 Valve Question
  67. 1st build; Adding load to PT secondary
  68. need help RCA RS 199C
  69. Unusually high Gm
  70. RH84 motorboating, stereo vs mono
  71. Use a tube rectifier for grid bias voltage, AA5 Radio tubes and usage.
  72. Cathode bypass with Long tail pair
  73. new chinese tube manufacturer
  74. Black Gate WKZ - can they be used in these circuits?
  75. Yet another question about HV Maida Regs
  76. Question about vacuum tubes
  77. Scott 299D Calibration
  78. Score! Bag-O-tubes!
  79. Building a tube integrated amp
  80. Audio Note Kits L1 Build...
  81. Need help with old mic amp
  82. Temporary hum
  83. Unidentified Tube - One for the detectives!
  84. Rogues?
  85. What about big tube RV278 Telefunken?
  86. variac variable transformer
  87. Tube amp OPT for Headphone Amp? (impedance matching question)
  88. current needed for 4x50l6 & 3x6sn6
  89. 6N11 tube work at 24V power supply?
  90. Heater voltage 5volt!
  91. help me choose a high end opt for tubelabs SE!
  92. 6L6/807 AB2 triode-- screen drive?
  93. help troubleshooting
  94. Anode Follower Article
  95. ECC802S 12AU7 ECC82 heater question
  96. Books for amplifiers
  97. E180F Preamp
  98. Don Allen Amp's ????
  99. To connect or not to connect..........
  100. Phonostage with tube moving coil
  101. 300b tube Temperature?
  102. Center tap transformer for elevated heater supplies
  103. single ended kt88 fuse blowing after an hour
  104. Radiotron question
  105. suggested use for old telefunken tubes
  106. Using different ouputs for two different drivers
  107. Pete Millett Uniamp with 300b
  108. Cary slp-70
  109. How to combine 2 signals from 2 gain stages
  110. Increase B+ supply
  111. Aikido Tetra Sans Phono PCB
  112. Loadlines and distortion (6S33S/6S41S)
  113. home theatre bypass feature
  114. Doubling the power of hifi tube amplifiers
  115. Can this tube be used in audio amplifier?
  116. 100 V OPT
  117. Help me understand tube chart data
  118. Listening preference....
  119. tube socket legs?
  120. Stand alone gain stage pre-amp
  121. I kinda sorta burned up my K12-G power transformer
  122. RCA-182 Tube Amp
  123. Transformer potting material? what material?
  124. Ultimate 6xEL34 PPP monoblocks? Hopefully with your help :)
  125. tube amp/pre in car?
  126. Thorsten's tube Stage for TDA1541A
  127. Convert Gates pre-amp to DC filament?
  128. any suggestions for a mid-amp transformer for a hybrid design... like this circuit...
  129. how much C is too much C?
  130. fisher 70AZ
  131. RE: My first attempt at using Tube Cadd
  132. Srpp simple explanation
  133. Driver for a 807 em triode mode...help !!!
  134. 6J6-based SSMH?
  135. Small tube amp based on 6N6P
  136. replacement for Ei 12BH7AEG
  137. Preamp input tube noise
  138. How much is too much for a 6L6GB?
  139. What is the proper way to measure transformer inductance?
  140. Audio Research LS8 mod. to MKII
  141. Futterman stage max input
  142. Pushing 6p14p too hard
  143. Who can tell me in Rome where can i buy antique Vacuum tube?
  144. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  145. Priboi biasing
  146. Whither Westrex ?.
  147. Tube Phono Pre-Amplifiers
  148. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  149. DIY tube amps for surround sounds?
  150. Rotary switch for attenuator
  151. What is Matise circuit?
  152. 6bq5 red plating
  153. Technical questions about Melos MA-333
  154. idiot proof mono push pull 6l6gc schematic wanted
  155. Passive Preamp Mod help
  156. KT77 OPT impedance
  157. i think i'm thru with 2A3 tubes
  158. VTC4U? Is that the name of the tube tower/shroud seller?
  159. 8417 triode el.. Mod??'s
  160. Gramp's Zenith MLT 15
  161. Class A tube amplifier Kit
  162. IERC tube coolers for EL34 on the Bay
  163. Stromberg Carlson ASR 433
  164. quads11&22 back into service
  165. New Tubes for sale
  166. Best design for Lundahl LL1679/PP
  167. 12U7 LTP vs. 6922 cascode
  168. Need help calculating value of balancing resistors
  169. 12ax7 12au7 preamp
  170. Western Electric 471A...any information ?
  171. Please Reply
  172. tube line preamplifier circuit
  173. 6L6 Ultralinear cathode Follower
  174. Grid current operation
  175. 431 based screen supply
  176. Where did all the money go?
  177. Hyperx soft start any good for valve amp situation?
  178. Class AB2, Class B, and Hifi
  179. PP 6b4g bad / distorted channel diagnostics
  180. Transformer usage ??
  181. Phono Amplifier
  182. Need EL84 Brand Identification
  183. RCA Octagon dating
  184. Most Accurate Bias Testing Method
  185. ASL AQ1003DT schematic or manual?
  186. Penta brand 6L6GC info?
  187. Mod to SE 6SN7 - 6V6 amp
  188. adjust filament ECC82/83
  189. Clear out of old valves - advice needed
  190. Help ID this OPT
  191. Help? 6n23p cathode follower
  192. DC Heater Caps
  193. Load Line and Biasing for Class AB 6550 power amp
  194. Amp project help needed
  195. LTP with CCS and feedback
  196. Clarion simple 2A3 amplifier
  197. Another question about plate curves and pentode load lines
  198. 5V Indrect Heated Rectifiers?
  199. Easy CCS
  200. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  201. First watt F2/little dot MK III
  202. Old Motorola console tube amp, fuse problem
  203. How much performance difference w/ this config?
  204. 6P8S datasheet, help !!
  205. DHT IMD
  206. How to calculate OPT transformer windings
  207. Newbie Questions
  208. Building a Harmonic Distortion Generator
  209. plate curves and max ratings questions
  210. Heater-cathode DC conduction resistance
  211. EL 84 Capacitor Equivalent
  212. How do they get away with this?
  213. well-loved Sherwood "popping" prob mouse pee
  214. Tube Newb: 12sn7 and 12sl7 interchangeable?
  215. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  216. sonic frontiers sfm-75
  217. Chinese tube amp mods?
  218. PSU for JE Labs Simple 45/2A3
  219. frustrated ,Bought a 845 NOS - springs are discconnected need help
  220. Running water sound in amp
  221. Peerless 16458 output transformers
  222. Noisy high-gain preamplifier
  223. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  224. 2A3 single plate RCA/Cunningham tube prices
  225. output transformer power rating
  226. Rectifier Foward Voltage?
  227. Help With 6Y6 amp
  228. What are 12AT7/ECC81 power drivers ?
  229. Help with these Russian GU50 tube amplifier
  230. Eico ST-70 Supermods
  231. Mullard PZ30, how's its Peak Inverse Voltage?
  232. 12AU7 in cascode configuration
  233. Bad tube in old record player?
  234. check this out glas-fiber cartridge
  235. cathode caps
  236. Aikido HV PSU
  237. Distance between 6N23P and a cap?
  238. solid and strand wire in amp
  239. Phillips Music Sudio
  240. LTPI Grid stopper value affect on harmonics
  241. WTF. What's going on here.
  242. 7-pin pcb mount socket with shield?
  243. SIMPLE remote volume control with alps motorized pot
  244. Hybrid Partial Feedback SE Amplifier
  245. HV +B Connector
  246. Eico experts needed: PEC in 2050 driver stage bad
  247. Best sounding linestage/buffer topology?
  248. Using ECC88
  249. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  250. EL34 cathode bias PA

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