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  1. question about the 866a
  2. Trade Custom Speaker Horns for Custom Amp
  3. TVA-1 valve amp - help
  4. Need to source a PSU chassis - simple steel
  5. What should I do with my Dynaco MKIII's
  6. inrush current
  7. Scott 222B output transformer : Compatibility and specs
  8. C3G/C3M Prices
  9. 5v3, 5u4, 5u4gb, 5u4gbm, 5931?
  10. transformer for quad EL84 SE amp - will Antek 360v work
  11. Best Possible Tube Headphone Amp
  12. Help with cheap mono SE
  13. Millkido 24
  14. 60W mono's design help
  15. Psu question - best place for the caps?
  16. 1.2W guitar amp useing:6N2P and 6N1P russian tubes.
  17. RCA jacks
  18. Hickok 530-B tester charts wanted
  19. comparison of heater termination noise
  20. Some questions about an amplifier design
  21. 2nd harmonic feedback
  22. idea's for a valve preamp
  23. Best line stage tube?
  24. Bias Adjustment point
  25. Looking for a Williamson squematics
  26. Magnavox Console Speaker Impedances
  27. first tube amp
  28. Beam Triodes
  29. Winding output transformers
  30. Anyone Have a Schematic for Wavac MD300B?
  31. PushPull vs ParalelSE
  32. Painting transformer end bells
  33. all-octal schaded pp
  34. New Wood Chassis from Hammond
  35. Strange Noise From Amp
  36. Missing components
  37. Tube headphone amplifier.
  38. Emission - Double Triode
  39. Convergent Audio Technology - where is their Hompage?
  40. Mesh Plate
  41. Cathode follower question
  42. Power supply question
  43. Looking for a 866a powersupply schematic
  44. 211 or 845 project
  45. Modify Dynaco MKIII to use 6AR6s ?
  46. Yet another Dyna ST-70 Input Board
  47. Free Download Vacuum Tube Design Book
  48. driver stage for ppp 6550's
  49. power supply problem
  50. Positive/Negative Feedback
  51. Unholy Alliance Phono Amp
  52. Shrink a tube amp
  53. lampizator srpp help
  54. the secret of best preamplifier
  55. Any issues with adding a grounded power cord to a Heathkit IT-17 tube tester?
  56. HELP to ID push pull/Single Ende
  57. 12BH7,6414,and 12AT7 to drive EL34 better
  58. Testing Tube Amplifiers
  59. trade off higher HT current for lower filament current ?
  60. Any Russian analog of 12BY7 ?
  61. SV572-10 still being made?
  62. PP Output Transformer Testing Puzzle
  63. baby steps
  64. Partial FB: 2 SE + 1 PI = PP?
  65. G-807=807 SE or PP?
  66. 1Hz oscillation with CCS biased output valves
  67. Ultra-linear 6L6 output stage
  68. Transformer or capacitor coupling?
  69. Victor (JVC) Tube Amp MCM-200
  70. MiniWatt N3 problems, oscillation thumping and RF/motor problems.
  71. A2293 pins connection, help !!!
  72. Start-Up Delay for tube amp !
  73. Getting OPT in Japan?
  74. cathode follower tube buffer using 6n6p
  75. Buzz at output until tubes conduct
  76. I need help for amps.
  77. UL Connection results in higher distortion
  78. Header bypass Cap?
  79. DC heater large cap
  80. How to lower preamp output?
  81. Why use a pre amplifier
  82. DHT-buffered NOS-dac
  83. Microphonics 12AY7 v.s. 12AX7
  84. ECC99/2A3 interstage finished, but have one query
  85. Tube lovers in Germany?
  86. preamplifier
  87. Choosing grid leak resistor value -- partly subjective?
  88. What does the acronym "AMW" stand for?
  89. 6C33C distortion spectrum
  90. 6C33C OTL DC schematic needed
  91. help with identifying the cause of preamp problem
  92. Rosenblit 70w Mac amp
  93. Grounding scheme
  94. CC vs Shunt filament supply?
  95. Need opinions on boxing a dual mono line stage
  96. Lets settle the b+ on cold tubes issue!
  97. New 2A3 SET / Simple, but gentle sounding amplifier
  98. Magnavox Console Amp Chassis
  99. transformer identification
  100. 50Wrms audio amplifier
  101. 12B4 have a good sound ???
  102. almarro OPT question
  103. Best EL84pp kit??
  104. Clarion 6L6G Oscillator Amp.
  105. Did you hear an original tube sound?
  106. Designing an OTL / Circlotron
  107. Cayin A55t or AudioSpace AS-8i Mk.III
  108. filament voltage question
  109. 7236 vs 6AS7 ?
  110. Bias Circuit Calculation
  111. 6V6 Hum Issues
  112. Crossover co-axial
  113. Wurlitzer 6420 to audio amplifiers
  114. Advice on Parafeed Output Transformer
  115. mingda mc34ab mods?
  116. small and cheap OTL schematic needed
  117. ecl82 or ecl86 amplifier decision
  118. Well Here Goes... K16LS in Dynaco Chassis?
  119. Not too often you see one of those
  120. Sweet Peach vs Meng Yue EL84
  121. Attempt at giving back: 6L6GC SE amplifier
  122. Best Complete KT88 Amp Kit under $1K?
  123. Webcor Musicale OT puzzle
  124. Audio Research SP3a
  125. Preamp Conordīs with some malfunctioning
  126. Oscillating PSU above certain voltage
  127. B+ voltage load line question
  128. ming da tube amp smell
  129. Rebuilding my amp, would like some input.
  130. do any of these cv4024s seem genuine to you?
  131. Stupid question: EL34 tubes.
  132. PP with Unbalanced concertina = 2nd H?
  133. harmonic distortion
  134. Enhanced Tube's performance
  135. New GU50 SE: SRRP or Cascode for driver?
  136. Hivac XN11 tubes
  137. Conrad Johnson PV-10a hum. Any advice?
  138. Bob Carver's eye candy on eBay
  139. MFA Lumi started "motor-boating" today
  140. New GM70 tube with problem
  141. Interested in building together a 300B tube amp?
  142. cayin a-55t want to use el34
  143. Mc240
  144. Dht ?
  145. too much output impedance?
  146. College-proofing an ST-70 (aka autobias+ST-70)
  147. reverse polarity of the chinese goods?
  148. 6bg6 and 8k opt power amp project
  149. Need some calculation assist for a psu
  150. Baldwin Transformer Swap
  151. THD, s/n and IM noisy measurements
  152. Little dot 2+, got spark
  153. (INDIA) urgent - high-quality amp builders/techs in Delhi?
  154. What causes saturation in tubes?
  155. Plug and Play Power Supply
  156. GE 5814 and 12AUCIFTE
  157. Amplifier oscillates - advice sought
  158. 50s Amplifier
  159. power supply design question 832A amp
  160. Klimo power supply advice
  161. Earth Not Connected
  162. DC heater supply for phono pre
  163. Audio Note P2SE problem
  164. Aikido Transformers - Good Choice?
  165. Caps before or after MOSFET V-regulator
  166. Which capacitors should I replace?
  167. Testing Amplifiers
  168. Choosing choke valuein pre amp tube
  169. Supertriode with PNP transistors
  170. too much gain
  171. Lloyd's Vintage High Fidelity Audio Devices - both Tube and Solid State
  172. Cheap eBay "zoe_tsan" tube kits - worth anything?
  173. Bell Vintage High Fidelity Audio Devices - both Tube and Solid State
  174. Small Tube Amp with Hum
  175. tube rectifier question
  176. Unison Research S6 schematics
  177. vacuum tube amplifiers should be produced like this?
  178. 6d22s to 6cj3
  179. pot in tube preamp
  180. Mable Audio vs. Suppo audio sound quality
  181. swdfasdfsdf
  182. measuring heater voltage
  183. Need a circuit around these tubes.
  184. Single-Ended 13E1 amplifier
  185. Whats' the max allowable / reasonable ripple in SE amp?
  186. What amp kits are out there?
  187. ECC84/6N14P for audio
  188. PSU ignorant
  189. How to define a quality OT?
  190. Looking for some build advice
  191. ASC oil caps vs M-tube cap for ps
  192. SS CCS and distortion
  193. the valve with no markings
  194. Pentode AB1 design school???
  195. Capability of Sony/Tamradio SE Output Transformers
  196. my CELLINI triode amp
  197. 45-based SET -> Pass Labs F4
  198. Testing Amplifiers - Speaker or dummy load
  199. Quiet amp hums with signal source or input directly tied to star earth??
  200. amp output testing
  201. S5 Amp Comparison?
  202. How to Ground a Preamp PCB Board?
  203. RH807 / 6L6GC g2 issues
  204. 2010: Replacement for Black Gate WKZ 100uF+100uF 500V
  205. sunn solarus guitar amp
  206. Converting Dynaco ST70 Power Transformer for 12.6V
  207. Simple CF with 5687/6900/E182CC
  208. World Audio Design 5881 Schematic needed
  209. PP triode transformer load
  210. 6V6 PP load line
  211. Need help to under stand this 6n3 Kit from ebay
  212. Help:ampeg svt 2 pro 100v>>240v
  213. Blown left channel
  214. Tube preamp build help-heaters
  215. Medium Power SET, EL156 based
  216. Concertina Splitter question - Need help
  217. 6V6 amp - schematic options
  218. Lectron pa50+jh50
  219. 4pr60b valve
  220. Transformer phase splitter
  221. Help! ground hum
  222. Question regarding Leak Stereo 20 and 6SN7 line stage preamp
  223. Recommended upgrades for Yaqin Tube Buffer ?
  224. 6J5 or 6S4 mic amp?
  225. ST-70 build, ideas and advice
  226. Yaqin MC-100B Help Needed!
  227. Preamp Aikido : 6ax5GT,12au7,2c51
  228. Heater of tube
  229. R-Core Winders
  230. 1946 philco amp, tuner, record player
  231. otions for drawing tube schematics on Mac..?
  232. Push/Pull Plate Load Choke - how to figure Inductance?
  233. 6aw8-a tube question
  234. Newbie needs a point in the right direction
  235. Minimalist PL519 OTL?
  236. Telefunken schematics
  237. parallel pp EL84
  238. AD1 Operating Question
  239. 6П3С-Е Russian NOS: Gas Problem
  240. Favourite EL34 circuit
  241. Medium power SET with parallel OP tubes
  242. sds labs into Pas3
  243. Low voltage 6922 preamp...wanting a schematic
  244. Voltage Gain on Long Tailed Drivers
  245. Purpose of 5842 tube?!?
  246. MA XDSE KT88 vs YAQIN MC-100B KT88
  247. JBL Amplifier story
  248. Fender tweed pro-amp clone
  249. Recommended spacing for multiple 5AR4's
  250. Cap choices coupling

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