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  1. Can this tube be used in audio amplifier?
  2. 100 V OPT
  3. Help me understand tube chart data
  4. Listening preference....
  5. tube socket legs?
  6. Stand alone gain stage pre-amp
  7. I kinda sorta burned up my K12-G power transformer
  8. RCA-182 Tube Amp
  9. Transformer potting material? what material?
  10. Ultimate 6xEL34 PPP monoblocks? Hopefully with your help :)
  11. tube amp/pre in car?
  12. Thorsten's tube Stage for TDA1541A
  13. Please help me identify these .45 3kv TRW caps
  14. Convert Gates pre-amp to DC filament?
  15. any suggestions for a mid-amp transformer for a hybrid design... like this circuit...
  16. how much C is too much C?
  17. fisher 70AZ
  18. RE: My first attempt at using Tube Cadd
  19. Srpp simple explanation
  20. Driver for a 807 em triode mode...help !!!
  21. 6J6-based SSMH?
  22. Small tube amp based on 6N6P
  23. replacement for Ei 12BH7AEG
  24. Preamp input tube noise
  25. How much is too much for a 6L6GB?
  26. What is the proper way to measure transformer inductance?
  27. Audio Research LS8 mod. to MKII
  28. Futterman stage max input
  29. How important is ESR in PS Caps?
  30. Pushing 6p14p too hard
  31. Who can tell me in Rome where can i buy antique Vacuum tube?
  32. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  33. Priboi biasing
  34. Whither Westrex ?.
  35. Tube Phono Pre-Amplifiers
  36. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  37. DIY tube amps for surround sounds?
  38. Bad solder joints in Fender Deluxe VM
  39. Rotary switch for attenuator
  40. What is Matise circuit?
  41. 6bq5 red plating
  42. Technical questions about Melos MA-333
  43. What's this in old Fender amps?
  44. idiot proof mono push pull 6l6gc schematic wanted
  45. Passive Preamp Mod help
  46. KT77 OPT impedance
  47. i think i'm thru with 2A3 tubes
  48. VTC4U? Is that the name of the tube tower/shroud seller?
  49. 8417 triode el.. Mod??'s
  50. Gramp's Zenith MLT 15
  51. Class A tube amplifier Kit
  52. IERC tube coolers for EL34 on the Bay
  53. Stromberg Carlson ASR 433
  54. quads11&22 back into service
  55. New Tubes for sale
  56. Best design for Lundahl LL1679/PP
  57. 12U7 LTP vs. 6922 cascode
  58. Need help calculating value of balancing resistors
  59. 12ax7 12au7 preamp
  60. Western Electric 471A...any information ?
  61. Please Reply
  62. tube line preamplifier circuit
  63. 6L6 Ultralinear cathode Follower
  64. Grid current operation
  65. 431 based screen supply
  66. Where did all the money go?
  67. Hyperx soft start any good for valve amp situation?
  68. Class AB2, Class B, and Hifi
  69. PP 6b4g bad / distorted channel diagnostics
  70. Transformer usage ??
  71. Phono Amplifier
  72. Need EL84 Brand Identification
  73. RCA Octagon dating
  74. Most Accurate Bias Testing Method
  75. ASL AQ1003DT schematic or manual?
  76. Penta brand 6L6GC info?
  77. Mod to SE 6SN7 - 6V6 amp
  78. adjust filament ECC82/83
  79. Clear out of old valves - advice needed
  80. Help ID this OPT
  81. Help? 6n23p cathode follower
  82. DC Heater Caps
  83. Load Line and Biasing for Class AB 6550 power amp
  84. Amp project help needed
  85. LTP with CCS and feedback
  86. Clarion simple 2A3 amplifier
  87. Another question about plate curves and pentode load lines
  88. 5V Indrect Heated Rectifiers?
  89. Easy CCS
  90. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  91. First watt F2/little dot MK III
  92. Old Motorola console tube amp, fuse problem
  93. How much performance difference w/ this config?
  94. 6P8S datasheet, help !!
  95. DHT IMD
  96. How to calculate OPT transformer windings
  97. Newbie Questions
  98. Building a Harmonic Distortion Generator
  99. plate curves and max ratings questions
  100. Heater-cathode DC conduction resistance
  101. EL 84 Capacitor Equivalent
  102. How do they get away with this?
  103. well-loved Sherwood "popping" prob mouse pee
  104. Tube Newb: 12sn7 and 12sl7 interchangeable?
  105. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  106. sonic frontiers sfm-75
  107. Chinese tube amp mods?
  108. PSU for JE Labs Simple 45/2A3
  109. frustrated ,Bought a 845 NOS - springs are discconnected need help
  110. Running water sound in amp
  111. Peerless 16458 output transformers
  112. Noisy high-gain preamplifier
  113. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  114. 2A3 single plate RCA/Cunningham tube prices
  115. output transformer power rating
  116. Rectifier Foward Voltage?
  117. Help With 6Y6 amp
  118. What are 12AT7/ECC81 power drivers ?
  119. Help with these Russian GU50 tube amplifier
  120. Eico ST-70 Supermods
  121. Mullard PZ30, how's its Peak Inverse Voltage?
  122. Optical compressor project
  123. 12AU7 in cascode configuration
  124. Bad tube in old record player?
  125. check this out glas-fiber cartridge
  126. cathode caps
  127. Aikido HV PSU
  128. Distance between 6N23P and a cap?
  129. solid and strand wire in amp
  130. Phillips Music Sudio
  131. LTPI Grid stopper value affect on harmonics
  132. WTF. What's going on here.
  133. 7-pin pcb mount socket with shield?
  134. SIMPLE remote volume control with alps motorized pot
  135. Hybrid Partial Feedback SE Amplifier
  136. HV +B Connector
  137. Eico experts needed: PEC in 2050 driver stage bad
  138. Best sounding linestage/buffer topology?
  139. Using ECC88
  140. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  141. EL34 cathode bias PA
  142. Tube Amp Art
  143. Quick OT Question
  144. Power Transformer
  145. ampex 354? some questions
  146. Good power Filter Capacitors
  147. Fisher 101d blow fuse
  148. Valco Model 1200 help
  149. Jolida 502A lost output...?
  150. Codename "Tapyrus", my ongoing DIY headphone amp
  151. RIAA preamp with DHTs
  152. Dynaco Mark VI feedback values
  153. Eagle PCB
  154. Ode to Tube Rollers
  155. switching tubes: good or bad idea?
  156. COnn Organ Amp DI266 Info 12v6GT tubes
  157. Please help me figure out why my plate voltage is too high here
  158. Yaqin MC10L Question for the Guru's
  159. PP PSU: How much ripple is too much ripple?
  160. Bypass caps in choke PS
  161. Grounded Grid TRANSCENDENT line stage
  162. Battery Powered Tube Amp
  163. 5Z4PJ 6N2J
  164. Almost there! opinions are welcomed(6C33SET)
  165. Speaker impedance and amp matching?
  166. r core or toroidal output trafo for dynaco st70
  167. Heathkit Returns
  168. How to get started
  169. WANTED: schematic for Eico 2050 Classic Series
  170. winding an output transformer
  171. 12AX7 vacuum tube pre-amp?
  172. motor 'defeat' switch for echoplex/etc
  173. Audionote kit L4 and L6
  174. class a audio amplifier 5w with ic ne5532
  175. Fate of my Heathkit W7-M amplifiers
  176. Trying to get my B&K 500 up and running.
  177. Tubelab simple SE ideas
  178. Newcomb E-10B Amplifer
  179. Telefunken RV218 power triode
  180. Crowhurst High Power vs Low Power Amplifiers
  181. Duncan amps PSU designer II help
  182. damper diodes
  183. EL12N in JCM800 clone
  184. Amp design exercise, mentorship needed...
  185. Need help with series filament 25l6GT amp
  186. Dynakit Mark IV Oscillation
  187. Telefunken C3M data
  188. Can a tube guru help with nu>lambda conversions?
  189. plate dissipation vs brand
  190. Solid-state replacements for PAS2/3 rectifiers?
  191. first integrated amp
  192. Problems with Unbalanced to Balanced line matching transformer from EDCOR
  193. st70A mod.kit
  194. Grampian 600u
  195. Suggest amp to drive mangnapan SMGa/MMG
  196. Valve DI box
  197. Yaqin Tube Amplifier
  198. Jensen JT-11P-1 on tube amp input
  199. Amperex PQ 6922 code decifering?
  200. 12ax7 driving a DHT out, why not?
  201. unknown Rogers Pre Power
  202. Mic pre question
  203. power tube power scaler
  204. Tube Rectifier with transformer without Center tap
  205. Can I use this stuff (does it have any value?)
  206. Full regulated power supply for 12au7(preamp)
  207. 6C33 OTL Circlotron
  208. Ammeter connection for Tubelab SE
  209. Unknown output transformer
  210. Building a tube pre/amp copy (6V6)
  211. 6922 pin i.d.
  212. KT88 Push Pull Amp using transistor driver stage
  213. 45 DHT HT Supply oscillating - help!
  214. exceeding plate voltage of the output tube
  215. Fisher 101D
  216. Tubes and Eagle3D
  217. Looking for old amp info
  218. Restoring an old tube amp
  219. Noob Tube Preamp Finished Kit Transformer HOT!
  220. the tv underrated tubes
  221. Headphone Amp
  222. What is needed to drive 86db speakers and sound *good*?
  223. ef86 - plate voltage
  224. Output signal distortion
  225. Minimum Acceptable Gm
  226. Anyone have experience with the 6SD7GT tube ?
  227. Identifying an ultralinear OPT
  228. A good sounding EL34 PP sch please
  229. THE CHAMP CBA-20807 1000 Watt Valve amplifier
  230. ST-35 First Build
  231. Identifying EL34 tube?
  232. Solid state relais in stean of standby swtich
  233. $75 tube amp kit on eBay???
  234. Power supply RC (ohm's law) question -NEWBIE ALERT
  235. variable power control
  236. reccommend a voltage doubler for bias?
  237. Point to Point build tips
  238. I need some fairly specific capacitors types, like polyester or silva mica.
  239. ecf82 pentode instead of ef86
  240. K-12G vs. K-502
  241. eq in a tiny Directly Heated Cathode amp
  242. Anyone ever try 6C33C SE with Aikido drive?
  243. Help with 1:2 line level input Tx's
  244. 112a preamp need comment please
  245. Excellent (Modified) Williamson Treatise
  246. Vintage Hoffman Stereo Amp Problem - fump, fump, fump
  247. Chicago BO-14 100w amp
  248. ef861 - guitar preamp
  249. volume pot question, help.
  250. Simple B+ delay circuit for tube power amp?

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