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  1. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  2. Priboi biasing
  3. Whither Westrex ?.
  4. Tube Phono Pre-Amplifiers
  5. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  6. DIY tube amps for surround sounds?
  7. Bad solder joints in Fender Deluxe VM
  8. Rotary switch for attenuator
  9. What is Matise circuit?
  10. 6bq5 red plating
  11. Technical questions about Melos MA-333
  12. What's this in old Fender amps?
  13. idiot proof mono push pull 6l6gc schematic wanted
  14. Passive Preamp Mod help
  15. KT77 OPT impedance
  16. i think i'm thru with 2A3 tubes
  17. VTC4U? Is that the name of the tube tower/shroud seller?
  18. 8417 triode el.. Mod??'s
  19. Gramp's Zenith MLT 15
  20. Class A tube amplifier Kit
  21. IERC tube coolers for EL34 on the Bay
  22. Stromberg Carlson ASR 433
  23. quads11&22 back into service
  24. New Tubes for sale
  25. Best design for Lundahl LL1679/PP
  26. 12U7 LTP vs. 6922 cascode
  27. Need help calculating value of balancing resistors
  28. 12ax7 12au7 preamp
  29. Western Electric 471A...any information ?
  30. Please Reply
  31. tube line preamplifier circuit
  32. 6L6 Ultralinear cathode Follower
  33. Grid current operation
  34. 431 based screen supply
  35. Where did all the money go?
  36. Hyperx soft start any good for valve amp situation?
  37. Class AB2, Class B, and Hifi
  38. PP 6b4g bad / distorted channel diagnostics
  39. Transformer usage ??
  40. Phono Amplifier
  41. Need EL84 Brand Identification
  42. RCA Octagon dating
  43. Most Accurate Bias Testing Method
  44. ASL AQ1003DT schematic or manual?
  45. Penta brand 6L6GC info?
  46. Mod to SE 6SN7 - 6V6 amp
  47. adjust filament ECC82/83
  48. Clear out of old valves - advice needed
  49. Help ID this OPT
  50. Help? 6n23p cathode follower
  51. DC Heater Caps
  52. Load Line and Biasing for Class AB 6550 power amp
  53. Amp project help needed
  54. LTP with CCS and feedback
  55. Clarion simple 2A3 amplifier
  56. Another question about plate curves and pentode load lines
  57. 5V Indrect Heated Rectifiers?
  58. Easy CCS
  59. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  60. First watt F2/little dot MK III
  61. Old Motorola console tube amp, fuse problem
  62. How much performance difference w/ this config?
  63. 6P8S datasheet, help !!
  64. DHT IMD
  65. How to calculate OPT transformer windings
  66. Newbie Questions
  67. Building a Harmonic Distortion Generator
  68. plate curves and max ratings questions
  69. Heater-cathode DC conduction resistance
  70. EL 84 Capacitor Equivalent
  71. How do they get away with this?
  72. well-loved Sherwood "popping" prob mouse pee
  73. Tube Newb: 12sn7 and 12sl7 interchangeable?
  74. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  75. sonic frontiers sfm-75
  76. Chinese tube amp mods?
  77. PSU for JE Labs Simple 45/2A3
  78. frustrated ,Bought a 845 NOS - springs are discconnected need help
  79. Running water sound in amp
  80. Peerless 16458 output transformers
  81. Noisy high-gain preamplifier
  82. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  83. 2A3 single plate RCA/Cunningham tube prices
  84. output transformer power rating
  85. Rectifier Foward Voltage?
  86. Help With 6Y6 amp
  87. What are 12AT7/ECC81 power drivers ?
  88. Help with these Russian GU50 tube amplifier
  89. Eico ST-70 Supermods
  90. Mullard PZ30, how's its Peak Inverse Voltage?
  91. Optical compressor project
  92. 12AU7 in cascode configuration
  93. Bad tube in old record player?
  94. check this out glas-fiber cartridge
  95. cathode caps
  96. Aikido HV PSU
  97. Distance between 6N23P and a cap?
  98. solid and strand wire in amp
  99. Phillips Music Sudio
  100. LTPI Grid stopper value affect on harmonics
  101. WTF. What's going on here.
  102. 7-pin pcb mount socket with shield?
  103. SIMPLE remote volume control with alps motorized pot
  104. Hybrid Partial Feedback SE Amplifier
  105. HV +B Connector
  106. Eico experts needed: PEC in 2050 driver stage bad
  107. Best sounding linestage/buffer topology?
  108. Using ECC88
  109. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  110. EL34 cathode bias PA
  111. Tube Amp Art
  112. Quick OT Question
  113. Power Transformer
  114. ampex 354? some questions
  115. Good power Filter Capacitors
  116. Fisher 101d blow fuse
  117. Valco Model 1200 help
  118. Jolida 502A lost output...?
  119. Codename "Tapyrus", my ongoing DIY headphone amp
  120. RIAA preamp with DHTs
  121. Dynaco Mark VI feedback values
  122. Eagle PCB
  123. Ode to Tube Rollers
  124. switching tubes: good or bad idea?
  125. COnn Organ Amp DI266 Info 12v6GT tubes
  126. Please help me figure out why my plate voltage is too high here
  127. Yaqin MC10L Question for the Guru's
  128. PP PSU: How much ripple is too much ripple?
  129. Bypass caps in choke PS
  130. Grounded Grid TRANSCENDENT line stage
  131. Battery Powered Tube Amp
  132. 5Z4PJ 6N2J
  133. Almost there! opinions are welcomed(6C33SET)
  134. Speaker impedance and amp matching?
  135. r core or toroidal output trafo for dynaco st70
  136. Heathkit Returns
  137. How to get started
  138. WANTED: schematic for Eico 2050 Classic Series
  139. winding an output transformer
  140. 12AX7 vacuum tube pre-amp?
  141. motor 'defeat' switch for echoplex/etc
  142. Audionote kit L4 and L6
  143. class a audio amplifier 5w with ic ne5532
  144. Fate of my Heathkit W7-M amplifiers
  145. Trying to get my B&K 500 up and running.
  146. Tubelab simple SE ideas
  147. Newcomb E-10B Amplifer
  148. Telefunken RV218 power triode
  149. Crowhurst High Power vs Low Power Amplifiers
  150. Duncan amps PSU designer II help
  151. damper diodes
  152. EL12N in JCM800 clone
  153. Amp design exercise, mentorship needed...
  154. Need help with series filament 25l6GT amp
  155. Dynakit Mark IV Oscillation
  156. Telefunken C3M data
  157. Can a tube guru help with nu>lambda conversions?
  158. plate dissipation vs brand
  159. Solid-state replacements for PAS2/3 rectifiers?
  160. first integrated amp
  161. Problems with Unbalanced to Balanced line matching transformer from EDCOR
  162. st70A mod.kit
  163. Grampian 600u
  164. Suggest amp to drive mangnapan SMGa/MMG
  165. Valve DI box
  166. Yaqin Tube Amplifier
  167. Jensen JT-11P-1 on tube amp input
  168. Amperex PQ 6922 code decifering?
  169. 12ax7 driving a DHT out, why not?
  170. unknown Rogers Pre Power
  171. Mic pre question
  172. power tube power scaler
  173. Tube Rectifier with transformer without Center tap
  174. Can I use this stuff (does it have any value?)
  175. Full regulated power supply for 12au7(preamp)
  176. 6C33 OTL Circlotron
  177. Ammeter connection for Tubelab SE
  178. Unknown output transformer
  179. Building a tube pre/amp copy (6V6)
  180. 6922 pin i.d.
  181. KT88 Push Pull Amp using transistor driver stage
  182. 45 DHT HT Supply oscillating - help!
  183. exceeding plate voltage of the output tube
  184. Fisher 101D
  185. Tubes and Eagle3D
  186. Looking for old amp info
  187. Restoring an old tube amp
  188. Noob Tube Preamp Finished Kit Transformer HOT!
  189. the tv underrated tubes
  190. Headphone Amp
  191. What is needed to drive 86db speakers and sound *good*?
  192. ef86 - plate voltage
  193. Output signal distortion
  194. Minimum Acceptable Gm
  195. Anyone have experience with the 6SD7GT tube ?
  196. Identifying an ultralinear OPT
  197. A good sounding EL34 PP sch please
  198. THE CHAMP CBA-20807 1000 Watt Valve amplifier
  199. ST-35 First Build
  200. Identifying EL34 tube?
  201. Solid state relais in stean of standby swtich
  202. $75 tube amp kit on eBay???
  203. Power supply RC (ohm's law) question -NEWBIE ALERT
  204. variable power control
  205. reccommend a voltage doubler for bias?
  206. Point to Point build tips
  207. I need some fairly specific capacitors types, like polyester or silva mica.
  208. ecf82 pentode instead of ef86
  209. K-12G vs. K-502
  210. eq in a tiny Directly Heated Cathode amp
  211. Anyone ever try 6C33C SE with Aikido drive?
  212. Help with 1:2 line level input Tx's
  213. 112a preamp need comment please
  214. Excellent (Modified) Williamson Treatise
  215. Vintage Hoffman Stereo Amp Problem - fump, fump, fump
  216. Chicago BO-14 100w amp
  217. ef861 - guitar preamp
  218. volume pot question, help.
  219. Simple B+ delay circuit for tube power amp?
  220. Dynacord Super 61, 62 spares request
  221. My small tube does it work?
  222. Approaching the best primary impedance on low or high side?
  223. CT Trafo and floating psu for circlotron?
  224. Unknown tube, need help to identify!
  225. 6L6 guidance needed
  226. Output Power Question
  227. Can the 7AK7 computer tube work as audio output tube ?
  228. Burned in Power Tubes?
  229. Driver Match for K-12G TubeAmp
  230. KT90 to KT88 with autobias
  231. SRPP DC working condition for Rk1=2Rk2
  232. NOS Russian Reflektor 6P6S (6V6) tubes were a pleasant surprise
  233. the 'sound' of a CF
  234. Hickok I-177B tester help!
  235. Illinois Capacitor or Cornell_Dubilier
  236. Found iron recycling - what possible uses?
  237. Class AB PP - is it any good ?
  238. Stereo to mono by paralleling outputs?
  239. BOX in the making
  240. How about paralleling output tubes
  241. Are they basically Borbely hybrid circuitry?
  242. Service Life at Low Plate Current
  243. Sophia Electric SE Transformers for 813 "Super Schade"
  244. 10W suitcase amp
  245. PP OT made of 2 transformers
  246. If I change B+ do I have to change the circuit?
  247. PhonoDude
  248. Lafayette Phono/Reverb /Center channel amp
  249. Seller recommendation needed.
  250. Jeffrey's Super Circlotron (hybrid)

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