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  1. Thorsten's tube Stage for TDA1541A
  2. Please help me identify these .45 3kv TRW caps
  3. Convert Gates pre-amp to DC filament?
  4. any suggestions for a mid-amp transformer for a hybrid design... like this circuit...
  5. how much C is too much C?
  6. fisher 70AZ
  7. RE: My first attempt at using Tube Cadd
  8. Srpp simple explanation
  9. Driver for a 807 em triode mode...help !!!
  10. 6J6-based SSMH?
  11. Small tube amp based on 6N6P
  12. replacement for Ei 12BH7AEG
  13. Preamp input tube noise
  14. How much is too much for a 6L6GB?
  15. What is the proper way to measure transformer inductance?
  16. Audio Research LS8 mod. to MKII
  17. Futterman stage max input
  18. How important is ESR in PS Caps?
  19. Pushing 6p14p too hard
  20. Who can tell me in Rome where can i buy antique Vacuum tube？
  21. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  22. Priboi biasing
  23. Whither Westrex ?.
  24. Tube Phono Pre-Amplifiers
  25. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  26. DIY tube amps for surround sounds?
  27. Bad solder joints in Fender Deluxe VM
  28. Rotary switch for attenuator
  29. What is Matise circuit?
  30. 6bq5 red plating
  31. Technical questions about Melos MA-333
  32. What's this in old Fender amps?
  33. idiot proof mono push pull 6l6gc schematic wanted
  34. Passive Preamp Mod help
  35. KT77 OPT impedance
  36. i think i'm thru with 2A3 tubes
  37. VTC4U? Is that the name of the tube tower/shroud seller?
  38. 8417 triode el.. Mod??'s
  39. Gramp's Zenith MLT 15
  40. Class A tube amplifier Kit
  41. IERC tube coolers for EL34 on the Bay
  42. Stromberg Carlson ASR 433
  43. quads11&22 back into service
  44. New Tubes for sale
  45. Best design for Lundahl LL1679/PP
  46. 12U7 LTP vs. 6922 cascode
  47. Need help calculating value of balancing resistors
  48. 12ax7 12au7 preamp
  49. Western Electric 471A...any information ?
  50. Please Reply
  51. tube line preamplifier circuit
  52. 6L6 Ultralinear cathode Follower
  53. Grid current operation
  54. 431 based screen supply
  55. Where did all the money go?
  56. Hyperx soft start any good for valve amp situation?
  57. Class AB2, Class B, and Hifi
  58. PP 6b4g bad / distorted channel diagnostics
  59. Transformer usage ??
  60. Phono Amplifier
  61. Need EL84 Brand Identification
  62. RCA Octagon dating
  63. Most Accurate Bias Testing Method
  64. ASL AQ1003DT schematic or manual?
  65. Penta brand 6L6GC info?
  66. Mod to SE 6SN7 - 6V6 amp
  67. adjust filament ECC82/83
  68. Clear out of old valves - advice needed
  69. Help ID this OPT
  70. Help? 6n23p cathode follower
  71. DC Heater Caps
  72. Load Line and Biasing for Class AB 6550 power amp
  73. Amp project help needed
  74. LTP with CCS and feedback
  75. Clarion simple 2A3 amplifier
  76. Another question about plate curves and pentode load lines
  77. 5V Indrect Heated Rectifiers?
  78. Easy CCS
  79. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  80. First watt F2/little dot MK III
  81. Old Motorola console tube amp, fuse problem
  82. How much performance difference w/ this config?
  83. 6P8S datasheet, help !!
  84. DHT IMD
  85. How to calculate OPT transformer windings
  86. Newbie Questions
  87. Building a Harmonic Distortion Generator
  88. plate curves and max ratings questions
  89. Heater-cathode DC conduction resistance
  90. EL 84 Capacitor Equivalent
  91. How do they get away with this?
  92. well-loved Sherwood "popping" prob mouse pee
  93. Tube Newb: 12sn7 and 12sl7 interchangeable?
  94. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  95. sonic frontiers sfm-75
  96. Chinese tube amp mods?
  97. PSU for JE Labs Simple 45/2A3
  98. frustrated ,Bought a 845 NOS - springs are discconnected need help
  99. Running water sound in amp
  100. Peerless 16458 output transformers
  101. Noisy high-gain preamplifier
  102. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  103. 2A3 single plate RCA/Cunningham tube prices
  104. output transformer power rating
  105. Rectifier Foward Voltage?
  106. Help With 6Y6 amp
  107. What are 12AT7/ECC81 power drivers ?
  108. Help with these Russian GU50 tube amplifier
  109. Eico ST-70 Supermods
  110. Mullard PZ30, how's its Peak Inverse Voltage?
  111. Optical compressor project
  112. 12AU7 in cascode configuration
  113. Bad tube in old record player?
  114. check this out glas-fiber cartridge
  115. cathode caps
  116. Aikido HV PSU
  117. Distance between 6N23P and a cap?
  118. solid and strand wire in amp
  119. Phillips Music Sudio
  120. LTPI Grid stopper value affect on harmonics
  121. WTF. What's going on here.
  122. 7-pin pcb mount socket with shield?
  123. SIMPLE remote volume control with alps motorized pot
  124. Hybrid Partial Feedback SE Amplifier
  125. HV +B Connector
  126. Eico experts needed: PEC in 2050 driver stage bad
  127. Best sounding linestage/buffer topology?
  128. Using ECC88
  129. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  130. EL34 cathode bias PA
  131. Tube Amp Art
  132. Quick OT Question
  133. Power Transformer
  134. ampex 354? some questions
  135. Good power Filter Capacitors
  136. Fisher 101d blow fuse
  137. Valco Model 1200 help
  138. Jolida 502A lost output...?
  139. Codename "Tapyrus", my ongoing DIY headphone amp
  140. RIAA preamp with DHTs
  141. Dynaco Mark VI feedback values
  142. Eagle PCB
  143. Ode to Tube Rollers
  144. switching tubes: good or bad idea?
  145. COnn Organ Amp DI266 Info 12v6GT tubes
  146. Please help me figure out why my plate voltage is too high here
  147. Yaqin MC10L Question for the Guru's
  148. PP PSU: How much ripple is too much ripple?
  149. Bypass caps in choke PS
  150. Grounded Grid TRANSCENDENT line stage
  151. Battery Powered Tube Amp
  152. 5Z4PJ 6N2J
  153. Almost there! opinions are welcomed(6C33SET)
  154. Speaker impedance and amp matching?
  155. r core or toroidal output trafo for dynaco st70
  156. Heathkit Returns
  157. How to get started
  158. WANTED: schematic for Eico 2050 Classic Series
  159. winding an output transformer
  160. 12AX7 vacuum tube pre-amp?
  161. motor 'defeat' switch for echoplex/etc
  162. Audionote kit L4 and L6
  163. class a audio amplifier 5w with ic ne5532
  164. Fate of my Heathkit W7-M amplifiers
  165. Trying to get my B&K 500 up and running.
  166. Tubelab simple SE ideas
  167. Newcomb E-10B Amplifer
  168. Telefunken RV218 power triode
  169. Crowhurst High Power vs Low Power Amplifiers
  170. Duncan amps PSU designer II help
  171. damper diodes
  172. EL12N in JCM800 clone
  173. Amp design exercise, mentorship needed...
  174. Need help with series filament 25l6GT amp
  175. Dynakit Mark IV Oscillation
  176. Telefunken C3M data
  177. Can a tube guru help with nu>lambda conversions?
  178. plate dissipation vs brand
  179. Solid-state replacements for PAS2/3 rectifiers?
  180. first integrated amp
  181. Problems with Unbalanced to Balanced line matching transformer from EDCOR
  182. st70A mod.kit
  183. Grampian 600u
  184. Suggest amp to drive mangnapan SMGa/MMG
  185. Valve DI box
  186. Yaqin Tube Amplifier
  187. Jensen JT-11P-1 on tube amp input
  188. Amperex PQ 6922 code decifering?
  189. 12ax7 driving a DHT out, why not?
  190. unknown Rogers Pre Power
  191. Mic pre question
  192. power tube power scaler
  193. Tube Rectifier with transformer without Center tap
  194. Can I use this stuff (does it have any value?)
  195. Full regulated power supply for 12au7(preamp)
  196. 6C33 OTL Circlotron
  197. Ammeter connection for Tubelab SE
  198. Unknown output transformer
  199. Building a tube pre/amp copy (6V6)
  200. 6922 pin i.d.
  201. KT88 Push Pull Amp using transistor driver stage
  202. 45 DHT HT Supply oscillating - help!
  203. exceeding plate voltage of the output tube
  204. Fisher 101D
  205. Tubes and Eagle3D
  206. Looking for old amp info
  207. Restoring an old tube amp
  208. Noob Tube Preamp Finished Kit Transformer HOT!
  209. the tv underrated tubes
  210. Headphone Amp
  211. What is needed to drive 86db speakers and sound *good*?
  212. ef86 - plate voltage
  213. Output signal distortion
  214. Minimum Acceptable Gm
  215. Anyone have experience with the 6SD7GT tube ?
  216. Identifying an ultralinear OPT
  217. A good sounding EL34 PP sch please
  218. THE CHAMP CBA-20807 1000 Watt Valve amplifier
  219. ST-35 First Build
  220. Identifying EL34 tube?
  221. Solid state relais in stean of standby swtich
  222. $75 tube amp kit on eBay???
  223. Power supply RC (ohm's law) question -NEWBIE ALERT
  224. variable power control
  225. reccommend a voltage doubler for bias?
  226. Point to Point build tips
  227. I need some fairly specific capacitors types, like polyester or silva mica.
  228. ecf82 pentode instead of ef86
  229. K-12G vs. K-502
  230. eq in a tiny Directly Heated Cathode amp
  231. Anyone ever try 6C33C SE with Aikido drive?
  232. Help with 1:2 line level input Tx's
  233. 112a preamp need comment please
  234. Excellent (Modified) Williamson Treatise
  235. Vintage Hoffman Stereo Amp Problem - fump, fump, fump
  236. Chicago BO-14 100w amp
  237. ef861 - guitar preamp
  238. volume pot question, help.
  239. Simple B+ delay circuit for tube power amp?
  240. Dynacord Super 61, 62 spares request
  241. My small tube does it work?
  242. Approaching the best primary impedance on low or high side?
  243. CT Trafo and floating psu for circlotron?
  244. Unknown tube, need help to identify!
  245. 6L6 guidance needed
  246. Output Power Question
  247. Can the 7AK7 computer tube work as audio output tube ?
  248. Burned in Power Tubes?
  249. Driver Match for K-12G TubeAmp
  250. KT90 to KT88 with autobias