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  1. Stand alone gain stage pre-amp
  2. I kinda sorta burned up my K12-G power transformer
  3. RCA-182 Tube Amp
  4. Transformer potting material? what material?
  5. Ultimate 6xEL34 PPP monoblocks? Hopefully with your help :)
  6. tube amp/pre in car?
  7. Thorsten's tube Stage for TDA1541A
  8. Convert Gates pre-amp to DC filament?
  9. any suggestions for a mid-amp transformer for a hybrid design... like this circuit...
  10. how much C is too much C?
  11. fisher 70AZ
  12. RE: My first attempt at using Tube Cadd
  13. Srpp simple explanation
  14. Driver for a 807 em triode mode...help !!!
  15. 6J6-based SSMH?
  16. Small tube amp based on 6N6P
  17. replacement for Ei 12BH7AEG
  18. Preamp input tube noise
  19. How much is too much for a 6L6GB?
  20. What is the proper way to measure transformer inductance?
  21. Audio Research LS8 mod. to MKII
  22. Futterman stage max input
  23. Pushing 6p14p too hard
  24. Who can tell me in Rome where can i buy antique Vacuum tube?
  25. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  26. Priboi biasing
  27. Whither Westrex ?.
  28. Tube Phono Pre-Amplifiers
  29. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  30. DIY tube amps for surround sounds?
  31. Rotary switch for attenuator
  32. What is Matise circuit?
  33. 6bq5 red plating
  34. Technical questions about Melos MA-333
  35. idiot proof mono push pull 6l6gc schematic wanted
  36. Passive Preamp Mod help
  37. KT77 OPT impedance
  38. i think i'm thru with 2A3 tubes
  39. VTC4U? Is that the name of the tube tower/shroud seller?
  40. 8417 triode el.. Mod??'s
  41. Gramp's Zenith MLT 15
  42. Class A tube amplifier Kit
  43. IERC tube coolers for EL34 on the Bay
  44. Stromberg Carlson ASR 433
  45. quads11&22 back into service
  46. New Tubes for sale
  47. Best design for Lundahl LL1679/PP
  48. 12U7 LTP vs. 6922 cascode
  49. Need help calculating value of balancing resistors
  50. 12ax7 12au7 preamp
  51. Western Electric 471A...any information ?
  52. Please Reply
  53. tube line preamplifier circuit
  54. 6L6 Ultralinear cathode Follower
  55. Grid current operation
  56. 431 based screen supply
  57. Where did all the money go?
  58. Hyperx soft start any good for valve amp situation?
  59. Class AB2, Class B, and Hifi
  60. PP 6b4g bad / distorted channel diagnostics
  61. Transformer usage ??
  62. Phono Amplifier
  63. Need EL84 Brand Identification
  64. RCA Octagon dating
  65. Most Accurate Bias Testing Method
  66. ASL AQ1003DT schematic or manual?
  67. Penta brand 6L6GC info?
  68. Mod to SE 6SN7 - 6V6 amp
  69. adjust filament ECC82/83
  70. Clear out of old valves - advice needed
  71. Help ID this OPT
  72. Help? 6n23p cathode follower
  73. DC Heater Caps
  74. Load Line and Biasing for Class AB 6550 power amp
  75. Amp project help needed
  76. LTP with CCS and feedback
  77. Clarion simple 2A3 amplifier
  78. Another question about plate curves and pentode load lines
  79. 5V Indrect Heated Rectifiers?
  80. Easy CCS
  81. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  82. First watt F2/little dot MK III
  83. Old Motorola console tube amp, fuse problem
  84. How much performance difference w/ this config?
  85. 6P8S datasheet, help !!
  86. DHT IMD
  87. How to calculate OPT transformer windings
  88. Newbie Questions
  89. Building a Harmonic Distortion Generator
  90. plate curves and max ratings questions
  91. Heater-cathode DC conduction resistance
  92. EL 84 Capacitor Equivalent
  93. How do they get away with this?
  94. well-loved Sherwood "popping" prob mouse pee
  95. Tube Newb: 12sn7 and 12sl7 interchangeable?
  96. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  97. sonic frontiers sfm-75
  98. Chinese tube amp mods?
  99. PSU for JE Labs Simple 45/2A3
  100. frustrated ,Bought a 845 NOS - springs are discconnected need help
  101. Running water sound in amp
  102. Peerless 16458 output transformers
  103. Noisy high-gain preamplifier
  104. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  105. 2A3 single plate RCA/Cunningham tube prices
  106. output transformer power rating
  107. Rectifier Foward Voltage?
  108. Help With 6Y6 amp
  109. What are 12AT7/ECC81 power drivers ?
  110. Help with these Russian GU50 tube amplifier
  111. Eico ST-70 Supermods
  112. Mullard PZ30, how's its Peak Inverse Voltage?
  113. 12AU7 in cascode configuration
  114. Bad tube in old record player?
  115. check this out glas-fiber cartridge
  116. cathode caps
  117. Aikido HV PSU
  118. Distance between 6N23P and a cap?
  119. solid and strand wire in amp
  120. Phillips Music Sudio
  121. LTPI Grid stopper value affect on harmonics
  122. WTF. What's going on here.
  123. 7-pin pcb mount socket with shield?
  124. SIMPLE remote volume control with alps motorized pot
  125. Hybrid Partial Feedback SE Amplifier
  126. HV +B Connector
  127. Eico experts needed: PEC in 2050 driver stage bad
  128. Best sounding linestage/buffer topology?
  129. Using ECC88
  130. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  131. EL34 cathode bias PA
  132. Tube Amp Art
  133. Quick OT Question
  134. Power Transformer
  135. ampex 354? some questions
  136. Good power Filter Capacitors
  137. Fisher 101d blow fuse
  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. Newcomb E-10B Amplifer
  167. Telefunken RV218 power triode
  168. Crowhurst High Power vs Low Power Amplifiers
  169. Duncan amps PSU designer II help
  170. damper diodes
  171. EL12N in JCM800 clone
  172. Amp design exercise, mentorship needed...
  173. Need help with series filament 25l6GT amp
  174. Dynakit Mark IV Oscillation
  175. Telefunken C3M data
  176. Can a tube guru help with nu>lambda conversions?
  177. plate dissipation vs brand
  178. Solid-state replacements for PAS2/3 rectifiers?
  179. first integrated amp
  180. Problems with Unbalanced to Balanced line matching transformer from EDCOR
  181. st70A mod.kit
  182. Grampian 600u
  183. Suggest amp to drive mangnapan SMGa/MMG
  184. Valve DI box
  185. Yaqin Tube Amplifier
  186. Jensen JT-11P-1 on tube amp input
  187. Amperex PQ 6922 code decifering?
  188. 12ax7 driving a DHT out, why not?
  189. unknown Rogers Pre Power
  190. Mic pre question
  191. power tube power scaler
  192. Tube Rectifier with transformer without Center tap
  193. Can I use this stuff (does it have any value?)
  194. Full regulated power supply for 12au7(preamp)
  195. 6C33 OTL Circlotron
  196. Unknown output transformer
  197. Building a tube pre/amp copy (6V6)
  198. 6922 pin i.d.
  199. KT88 Push Pull Amp using transistor driver stage
  200. 45 DHT HT Supply oscillating - help!
  201. exceeding plate voltage of the output tube
  202. Fisher 101D
  203. Tubes and Eagle3D
  204. Looking for old amp info
  205. Restoring an old tube amp
  206. Noob Tube Preamp Finished Kit Transformer HOT!
  207. the tv underrated tubes
  208. Headphone Amp
  209. What is needed to drive 86db speakers and sound *good*?
  210. ef86 - plate voltage
  211. Output signal distortion
  212. Minimum Acceptable Gm
  213. Anyone have experience with the 6SD7GT tube ?
  214. Identifying an ultralinear OPT
  215. A good sounding EL34 PP sch please
  216. THE CHAMP CBA-20807 1000 Watt Valve amplifier
  217. ST-35 First Build
  218. Identifying EL34 tube?
  219. Solid state relais in stean of standby swtich
  220. $75 tube amp kit on eBay???
  221. Power supply RC (ohm's law) question -NEWBIE ALERT
  222. variable power control
  223. reccommend a voltage doubler for bias?
  224. Point to Point build tips
  225. I need some fairly specific capacitors types, like polyester or silva mica.
  226. ecf82 pentode instead of ef86
  227. K-12G vs. K-502
  228. eq in a tiny Directly Heated Cathode amp
  229. Anyone ever try 6C33C SE with Aikido drive?
  230. Help with 1:2 line level input Tx's
  231. 112a preamp need comment please
  232. Excellent (Modified) Williamson Treatise
  233. Vintage Hoffman Stereo Amp Problem - fump, fump, fump
  234. Chicago BO-14 100w amp
  235. volume pot question, help.
  236. Simple B+ delay circuit for tube power amp?
  237. Dynacord Super 61, 62 spares request
  238. My small tube does it work?
  239. Approaching the best primary impedance on low or high side?
  240. CT Trafo and floating psu for circlotron?
  241. Unknown tube, need help to identify!
  242. 6L6 guidance needed
  243. Output Power Question
  244. Can the 7AK7 computer tube work as audio output tube ?
  245. Burned in Power Tubes?
  246. Driver Match for K-12G TubeAmp
  247. KT90 to KT88 with autobias
  248. SRPP DC working condition for Rk1=2Rk2
  249. NOS Russian Reflektor 6P6S (6V6) tubes were a pleasant surprise
  250. the 'sound' of a CF

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