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  1. lampizator srpp help
  2. the secret of best preamplifier
  3. HELP to ID push pull/Single Ende
  4. 12BH7,6414,and 12AT7 to drive EL34 better
  5. Testing Tube Amplifiers
  6. trade off higher HT current for lower filament current ?
  7. Any Russian analog of 12BY7 ?
  8. SV572-10 still being made?
  9. PP Output Transformer Testing Puzzle
  10. baby steps
  11. Partial FB: 2 SE + 1 PI = PP?
  12. G-807=807 SE or PP?
  13. 1Hz oscillation with CCS biased output valves
  14. Ultra-linear 6L6 output stage
  15. Transformer or capacitor coupling?
  16. Victor (JVC) Tube Amp MCM-200
  17. MiniWatt N3 problems, oscillation thumping and RF/motor problems.
  18. A2293 pins connection, help !!!
  19. Start-Up Delay for tube amp !
  20. Getting OPT in Japan?
  21. cathode follower tube buffer using 6n6p
  22. Buzz at output until tubes conduct
  23. I need help for amps.
  24. UL Connection results in higher distortion
  25. Header bypass Cap?
  26. DC heater large cap
  27. How to lower preamp output?
  28. Why use a pre amplifier
  29. DHT-buffered NOS-dac
  30. Microphonics 12AY7 v.s. 12AX7
  31. ECC99/2A3 interstage finished, but have one query
  32. Tube lovers in Germany?
  33. preamplifier
  34. Choosing grid leak resistor value -- partly subjective?
  35. What does the acronym "AMW" stand for?
  36. 6C33C distortion spectrum
  37. 6C33C OTL DC schematic needed
  38. help with identifying the cause of preamp problem
  39. Rosenblit 70w Mac amp
  40. Grounding scheme
  41. CC vs Shunt filament supply?
  42. Need opinions on boxing a dual mono line stage
  43. Lets settle the b+ on cold tubes issue!
  44. New 2A3 SET / Simple, but gentle sounding amplifier
  45. Magnavox Console Amp Chassis
  46. transformer identification
  47. 50Wrms audio amplifier
  48. 12B4 have a good sound ???
  49. almarro OPT question
  50. Best EL84pp kit??
  51. Clarion 6L6G Oscillator Amp.
  52. Did you hear an original tube sound?
  53. Designing an OTL / Circlotron
  54. Cayin A55t or AudioSpace AS-8i Mk.III
  55. filament voltage question
  56. 7236 vs 6AS7 ?
  57. Bias Circuit Calculation
  58. 6V6 Hum Issues
  59. Crossover co-axial
  60. Wurlitzer 6420 to audio amplifiers
  61. Advice on Parafeed Output Transformer
  62. mingda mc34ab mods?
  63. small and cheap OTL schematic needed
  64. ecl82 or ecl86 amplifier decision
  65. Well Here Goes... K16LS in Dynaco Chassis?
  66. Not too often you see one of those
  67. Sweet Peach vs Meng Yue EL84
  68. Attempt at giving back: 6L6GC SE amplifier
  69. Best Complete KT88 Amp Kit under $1K?
  70. Webcor Musicale OT puzzle
  71. Audio Research SP3a
  72. Preamp Conordīs with some malfunctioning
  73. Oscillating PSU above certain voltage
  74. B+ voltage load line question
  75. ming da tube amp smell
  76. Rebuilding my amp, would like some input.
  77. do any of these cv4024s seem genuine to you?
  78. Stupid question: EL34 tubes.
  79. PP with Unbalanced concertina = 2nd H?
  80. harmonic distortion
  81. Enhanced Tube's performance
  82. New GU50 SE: SRRP or Cascode for driver?
  83. Hivac XN11 tubes
  84. Conrad Johnson PV-10a hum. Any advice?
  85. Bob Carver's eye candy on eBay
  86. MFA Lumi started "motor-boating" today
  87. New GM70 tube with problem
  88. Interested in building together a 300B tube amp?
  89. cayin a-55t want to use el34
  90. Mc240
  91. Dht ?
  92. too much output impedance?
  93. College-proofing an ST-70 (aka autobias+ST-70)
  94. reverse polarity of the chinese goods?
  95. 6bg6 and 8k opt power amp project
  96. Need some calculation assist for a psu
  97. Baldwin Transformer Swap
  98. THD, s/n and IM noisy measurements
  99. Little dot 2+, got spark
  100. (INDIA) urgent - high-quality amp builders/techs in Delhi?
  101. What causes saturation in tubes?
  102. Plug and Play Power Supply
  103. GE 5814 and 12AUCIFTE
  104. Amplifier oscillates - advice sought
  105. 50s Amplifier
  106. power supply design question 832A amp
  107. Klimo power supply advice
  108. Earth Not Connected
  109. DC heater supply for phono pre
  110. Audio Note P2SE problem
  111. Aikido Transformers - Good Choice?
  112. Caps before or after MOSFET V-regulator
  113. Which capacitors should I replace?
  114. Testing Amplifiers
  115. Choosing choke valuein pre amp tube
  116. Supertriode with PNP transistors
  117. too much gain
  118. Lloyd's Vintage High Fidelity Audio Devices - both Tube and Solid State
  119. Cheap eBay "zoe_tsan" tube kits - worth anything?
  120. Bell Vintage High Fidelity Audio Devices - both Tube and Solid State
  121. Small Tube Amp with Hum
  122. tube rectifier question
  123. Unison Research S6 schematics
  124. vacuum tube amplifiers should be produced like this?
  125. 6d22s to 6cj3
  126. pot in tube preamp
  127. Mable Audio vs. Suppo audio sound quality
  128. swdfasdfsdf
  129. measuring heater voltage
  130. Need a circuit around these tubes.
  131. Single-Ended 13E1 amplifier
  132. Whats' the max allowable / reasonable ripple in SE amp?
  133. What amp kits are out there?
  134. ECC84/6N14P for audio
  135. PSU ignorant
  136. How to define a quality OT?
  137. Looking for some build advice
  138. SS CCS and distortion
  139. the valve with no markings
  140. Pentode AB1 design school???
  141. Capability of Sony/Tamradio SE Output Transformers
  142. my CELLINI triode amp
  143. 45-based SET -> Pass Labs F4
  144. Testing Amplifiers - Speaker or dummy load
  145. Quiet amp hums with signal source or input directly tied to star earth??
  146. amp output testing
  147. S5 Amp Comparison?
  148. How to Ground a Preamp PCB Board?
  149. RH807 / 6L6GC g2 issues
  150. 2010: Replacement for Black Gate WKZ 100uF+100uF 500V
  151. Converting Dynaco ST70 Power Transformer for 12.6V
  152. Simple CF with 5687/6900/E182CC
  153. World Audio Design 5881 Schematic needed
  154. PP triode transformer load
  155. 6V6 PP load line
  156. Need help to under stand this 6n3 Kit from ebay
  157. Blown left channel
  158. Tube preamp build help-heaters
  159. Medium Power SET, EL156 based
  160. Concertina Splitter question - Need help
  161. 6V6 amp - schematic options
  162. Lectron pa50+jh50
  163. 4pr60b valve
  164. Transformer phase splitter
  165. Help! ground hum
  166. Question regarding Leak Stereo 20 and 6SN7 line stage preamp
  167. Recommended upgrades for Yaqin Tube Buffer ?
  168. 6J5 or 6S4 mic amp?
  169. ST-70 build, ideas and advice
  170. Yaqin MC-100B Help Needed!
  171. Preamp Aikido : 6ax5GT,12au7,2c51
  172. Heater of tube
  173. R-Core Winders
  174. 1946 philco amp, tuner, record player
  175. otions for drawing tube schematics on Mac..?
  176. Push/Pull Plate Load Choke - how to figure Inductance?
  177. 6aw8-a tube question
  178. Newbie needs a point in the right direction
  179. Minimalist PL519 OTL?
  180. Telefunken schematics
  181. parallel pp EL84
  182. AD1 Operating Question
  183. 6П3С-Е Russian NOS: Gas Problem
  184. Favourite EL34 circuit
  185. Medium power SET with parallel OP tubes
  186. sds labs into Pas3
  187. Low voltage 6922 preamp...wanting a schematic
  188. Voltage Gain on Long Tailed Drivers
  189. Purpose of 5842 tube?!?
  190. MA XDSE KT88 vs YAQIN MC-100B KT88
  191. JBL Amplifier story
  192. Recommended spacing for multiple 5AR4's
  193. Cap choices coupling
  194. Output transformer for PP EL34 source
  195. mini max pre
  196. use 2 ohm speakers
  197. Ask tube rect 5u4c and JJ caps
  198. Adding caps to prevent oscilation in AF 5687
  199. Williamson on EL84. Is it worth doing?
  200. CCS and regulated B+
  201. Garter cross-coupled feedback
  202. soundcard protection Z ???
  203. Using a CCS on SE Output Stage
  204. First amp build... help please!
  205. multiple independent grid biasing from 1 mosfet
  206. Eico HF-81 modification opinion
  207. 4K or 5K Output Transformer
  208. Noisy input on Michaelson & Austin TVA-1
  209. Precision Electronics S-35 help,
  210. Rogers Cadet 3 Problem
  211. Triode Electronics VS Hammond
  212. Triode Operation Using The Screen Grids As The Control Grid - This Work?
  213. Start up delay needed???
  214. Connecting a stereo amp as a mono-block
  215. HQ-DHT (All tube DHT amli) 26-45-2A3
  216. 24A tube in triode mode, help !!!
  217. Need super quiet 6.3V filament supply schematic
  218. (Sound Space)Houston 2A3 Power Amplifier
  219. James Burgess 2A3 Monoblocks
  220. Funny tube tale from southamerica
  221. RCA 7189 Black Plates
  222. Preamp nasty noise and hum
  223. EDCOR VS One Electron
  224. Parallel output tubes/valves in push pull. Advantages/disadvantages?
  225. Robinhood output transformers?
  226. looking for help diagnosing volume loss on tube amplified reel to reel player
  227. Question about power consumption Hagerman Cornet Octal
  228. valve rectifier in PSUD
  229. Can you explain what this is ?
  230. volume rise with frequency problem
  231. 1 + 1 = 3 :)
  232. What would the perfect multi-way speaker for a tube amp look like?
  233. GU50 compared with EL84
  234. Counterpoint SA-4 manual and schematics
  235. Ever heard of a Valvo 16ECC ?
  236. the Reversal SRPP
  237. Want to build a C3G linestage
  238. 30A5 tubes
  239. Good speakers to match a K-12
  240. Driving Long Cables, how much current?
  241. twin triode question
  242. Am I going to blow up my 7189s
  243. How is wattage calculated when only using a single section?
  244. Counterpoint SA5 problems and a question.
  245. Headphone Amplifier 6922EH
  246. Fuse Clip for Small Plate Cap Use
  247. Advice sought on medium power triode for tube headphone amplifier
  248. Input stage
  249. Does anyone have any FFT plots from real Class-AB tube amps?
  250. Testing for a Damaged Output Trafo

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