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  1. What about big tube RV278 Telefunken?
  2. variac variable transformer
  3. Tube amp OPT for Headphone Amp? (impedance matching question)
  4. current needed for 4x50l6 & 3x6sn6
  5. 6N11 tube work at 24V power supply?
  6. Heater voltage 5volt!
  7. help me choose a high end opt for tubelabs SE!
  8. 6L6/807 AB2 triode-- screen drive?
  9. help troubleshooting
  10. Anode Follower Article
  11. ECC802S 12AU7 ECC82 heater question
  12. Books for amplifiers
  13. E180F Preamp
  14. Don Allen Amp's ????
  15. To connect or not to connect..........
  16. Phonostage with tube moving coil
  17. 300b tube Temperature?
  18. Center tap transformer for elevated heater supplies
  19. single ended kt88 fuse blowing after an hour
  20. Help getting more gain from a Peavey Butcher
  21. Radiotron question
  22. suggested use for old telefunken tubes
  23. Using different ouputs for two different drivers
  24. Pete Millett Uniamp with 300b
  25. Cary slp-70
  26. How to combine 2 signals from 2 gain stages
  27. Increase B+ supply
  28. Aikido Tetra Sans Phono PCB
  29. Loadlines and distortion (6S33S/6S41S)
  30. home theatre bypass feature
  31. Doubling the power of hifi tube amplifiers
  32. Can this tube be used in audio amplifier?
  33. 100 V OPT
  34. Help me understand tube chart data
  35. Listening preference....
  36. tube socket legs?
  37. Stand alone gain stage pre-amp
  38. I kinda sorta burned up my K12-G power transformer
  39. RCA-182 Tube Amp
  40. Transformer potting material? what material?
  41. Ultimate 6xEL34 PPP monoblocks? Hopefully with your help :)
  42. tube amp/pre in car?
  43. Thorsten's tube Stage for TDA1541A
  44. Please help me identify these .45 3kv TRW caps
  45. Convert Gates pre-amp to DC filament?
  46. any suggestions for a mid-amp transformer for a hybrid design... like this circuit...
  47. how much C is too much C?
  48. fisher 70AZ
  49. RE: My first attempt at using Tube Cadd
  50. Srpp simple explanation
  51. Driver for a 807 em triode mode...help !!!
  52. 6J6-based SSMH?
  53. Small tube amp based on 6N6P
  54. replacement for Ei 12BH7AEG
  55. Preamp input tube noise
  56. How much is too much for a 6L6GB?
  57. What is the proper way to measure transformer inductance?
  58. Audio Research LS8 mod. to MKII
  59. Futterman stage max input
  60. How important is ESR in PS Caps?
  61. Pushing 6p14p too hard
  62. Who can tell me in Rome where can i buy antique Vacuum tube?
  63. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  64. Priboi biasing
  65. Whither Westrex ?.
  66. Tube Phono Pre-Amplifiers
  67. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  68. DIY tube amps for surround sounds?
  69. Bad solder joints in Fender Deluxe VM
  70. Rotary switch for attenuator
  71. What is Matise circuit?
  72. 6bq5 red plating
  73. Technical questions about Melos MA-333
  74. What's this in old Fender amps?
  75. idiot proof mono push pull 6l6gc schematic wanted
  76. Passive Preamp Mod help
  77. KT77 OPT impedance
  78. i think i'm thru with 2A3 tubes
  79. VTC4U? Is that the name of the tube tower/shroud seller?
  80. 8417 triode el.. Mod??'s
  81. Gramp's Zenith MLT 15
  82. Class A tube amplifier Kit
  83. IERC tube coolers for EL34 on the Bay
  84. Stromberg Carlson ASR 433
  85. quads11&22 back into service
  86. New Tubes for sale
  87. Best design for Lundahl LL1679/PP
  88. 12U7 LTP vs. 6922 cascode
  89. Need help calculating value of balancing resistors
  90. 12ax7 12au7 preamp
  91. Western Electric 471A...any information ?
  92. Please Reply
  93. tube line preamplifier circuit
  94. 6L6 Ultralinear cathode Follower
  95. Grid current operation
  96. 431 based screen supply
  97. Where did all the money go?
  98. Hyperx soft start any good for valve amp situation?
  99. Class AB2, Class B, and Hifi
  100. PP 6b4g bad / distorted channel diagnostics
  101. Transformer usage ??
  102. Phono Amplifier
  103. Need EL84 Brand Identification
  104. RCA Octagon dating
  105. Most Accurate Bias Testing Method
  106. ASL AQ1003DT schematic or manual?
  107. Penta brand 6L6GC info?
  108. Mod to SE 6SN7 - 6V6 amp
  109. adjust filament ECC82/83
  110. Clear out of old valves - advice needed
  111. Help ID this OPT
  112. Help? 6n23p cathode follower
  113. DC Heater Caps
  114. Load Line and Biasing for Class AB 6550 power amp
  115. Amp project help needed
  116. LTP with CCS and feedback
  117. Clarion simple 2A3 amplifier
  118. Another question about plate curves and pentode load lines
  119. 5V Indrect Heated Rectifiers?
  120. Easy CCS
  121. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  122. First watt F2/little dot MK III
  123. Old Motorola console tube amp, fuse problem
  124. How much performance difference w/ this config?
  125. 6P8S datasheet, help !!
  126. DHT IMD
  127. How to calculate OPT transformer windings
  128. Newbie Questions
  129. Building a Harmonic Distortion Generator
  130. plate curves and max ratings questions
  131. Heater-cathode DC conduction resistance
  132. EL 84 Capacitor Equivalent
  133. How do they get away with this?
  134. well-loved Sherwood "popping" prob mouse pee
  135. Tube Newb: 12sn7 and 12sl7 interchangeable?
  136. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  137. sonic frontiers sfm-75
  138. Chinese tube amp mods?
  139. PSU for JE Labs Simple 45/2A3
  140. frustrated ,Bought a 845 NOS - springs are discconnected need help
  141. Running water sound in amp
  142. Peerless 16458 output transformers
  143. Noisy high-gain preamplifier
  144. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  145. 2A3 single plate RCA/Cunningham tube prices
  146. output transformer power rating
  147. Rectifier Foward Voltage?
  148. Help With 6Y6 amp
  149. What are 12AT7/ECC81 power drivers ?
  150. Help with these Russian GU50 tube amplifier
  151. Eico ST-70 Supermods
  152. Mullard PZ30, how's its Peak Inverse Voltage?
  153. Optical compressor project
  154. 12AU7 in cascode configuration
  155. Bad tube in old record player?
  156. check this out glas-fiber cartridge
  157. cathode caps
  158. Aikido HV PSU
  159. Distance between 6N23P and a cap?
  160. solid and strand wire in amp
  161. Phillips Music Sudio
  162. LTPI Grid stopper value affect on harmonics
  163. WTF. What's going on here.
  164. 7-pin pcb mount socket with shield?
  165. SIMPLE remote volume control with alps motorized pot
  166. Hybrid Partial Feedback SE Amplifier
  167. HV +B Connector
  168. Eico experts needed: PEC in 2050 driver stage bad
  169. Best sounding linestage/buffer topology?
  170. Using ECC88
  171. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  172. EL34 cathode bias PA
  173. Tube Amp Art
  174. Quick OT Question
  175. Power Transformer
  176. ampex 354? some questions
  177. Good power Filter Capacitors
  178. Fisher 101d blow fuse
  179. Valco Model 1200 help
  180. Jolida 502A lost output...?
  181. Codename "Tapyrus", my ongoing DIY headphone amp
  182. RIAA preamp with DHTs
  183. Dynaco Mark VI feedback values
  184. Eagle PCB
  185. Ode to Tube Rollers
  186. switching tubes: good or bad idea?
  187. COnn Organ Amp DI266 Info 12v6GT tubes
  188. Please help me figure out why my plate voltage is too high here
  189. Yaqin MC10L Question for the Guru's
  190. PP PSU: How much ripple is too much ripple?
  191. Bypass caps in choke PS
  192. Grounded Grid TRANSCENDENT line stage
  193. Battery Powered Tube Amp
  194. 5Z4PJ 6N2J
  195. Almost there! opinions are welcomed(6C33SET)
  196. Speaker impedance and amp matching?
  197. r core or toroidal output trafo for dynaco st70
  198. Heathkit Returns
  199. How to get started
  200. WANTED: schematic for Eico 2050 Classic Series
  201. winding an output transformer
  202. 12AX7 vacuum tube pre-amp?
  203. motor 'defeat' switch for echoplex/etc
  204. Audionote kit L4 and L6
  205. class a audio amplifier 5w with ic ne5532
  206. Fate of my Heathkit W7-M amplifiers
  207. Trying to get my B&K 500 up and running.
  208. Tubelab simple SE ideas
  209. Newcomb E-10B Amplifer
  210. Telefunken RV218 power triode
  211. Crowhurst High Power vs Low Power Amplifiers
  212. Duncan amps PSU designer II help
  213. damper diodes
  214. EL12N in JCM800 clone
  215. Amp design exercise, mentorship needed...
  216. Need help with series filament 25l6GT amp
  217. Dynakit Mark IV Oscillation
  218. Telefunken C3M data
  219. Can a tube guru help with nu>lambda conversions?
  220. plate dissipation vs brand
  221. Solid-state replacements for PAS2/3 rectifiers?
  222. first integrated amp
  223. Problems with Unbalanced to Balanced line matching transformer from EDCOR
  224. st70A mod.kit
  225. Grampian 600u
  226. Suggest amp to drive mangnapan SMGa/MMG
  227. Valve DI box
  228. Yaqin Tube Amplifier
  229. Jensen JT-11P-1 on tube amp input
  230. Amperex PQ 6922 code decifering?
  231. 12ax7 driving a DHT out, why not?
  232. unknown Rogers Pre Power
  233. Mic pre question
  234. power tube power scaler
  235. Tube Rectifier with transformer without Center tap
  236. Can I use this stuff (does it have any value?)
  237. Full regulated power supply for 12au7(preamp)
  238. 6C33 OTL Circlotron
  239. Ammeter connection for Tubelab SE
  240. Unknown output transformer
  241. Building a tube pre/amp copy (6V6)
  242. 6922 pin i.d.
  243. KT88 Push Pull Amp using transistor driver stage
  244. 45 DHT HT Supply oscillating - help!
  245. exceeding plate voltage of the output tube
  246. Fisher 101D
  247. Tubes and Eagle3D
  248. Looking for old amp info
  249. Restoring an old tube amp
  250. Noob Tube Preamp Finished Kit Transformer HOT!

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