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  1. Webcor Musicale OT puzzle
  2. Audio Research SP3a
  3. Preamp Conordīs with some malfunctioning
  4. Oscillating PSU above certain voltage
  5. B+ voltage load line question
  6. ming da tube amp smell
  7. Rebuilding my amp, would like some input.
  8. do any of these cv4024s seem genuine to you?
  9. Stupid question: EL34 tubes.
  10. PP with Unbalanced concertina = 2nd H?
  11. harmonic distortion
  12. Enhanced Tube's performance
  13. New GU50 SE: SRRP or Cascode for driver?
  14. Hivac XN11 tubes
  15. Conrad Johnson PV-10a hum. Any advice?
  16. Bob Carver's eye candy on eBay
  17. MFA Lumi started "motor-boating" today
  18. New GM70 tube with problem
  19. Interested in building together a 300B tube amp?
  20. cayin a-55t want to use el34
  21. Mc240
  22. Dht ?
  23. too much output impedance?
  24. College-proofing an ST-70 (aka autobias+ST-70)
  25. reverse polarity of the chinese goods?
  26. 6bg6 and 8k opt power amp project
  27. Need some calculation assist for a psu
  28. Baldwin Transformer Swap
  29. THD, s/n and IM noisy measurements
  30. Little dot 2+, got spark
  31. (INDIA) urgent - high-quality amp builders/techs in Delhi?
  32. What causes saturation in tubes?
  33. Plug and Play Power Supply
  34. GE 5814 and 12AUCIFTE
  35. Amplifier oscillates - advice sought
  36. 50s Amplifier
  37. power supply design question 832A amp
  38. Klimo power supply advice
  39. Earth Not Connected
  40. DC heater supply for phono pre
  41. Audio Note P2SE problem
  42. Aikido Transformers - Good Choice?
  43. Caps before or after MOSFET V-regulator
  44. Which capacitors should I replace?
  45. Testing Amplifiers
  46. Choosing choke valuein pre amp tube
  47. Supertriode with PNP transistors
  48. too much gain
  49. Lloyd's Vintage High Fidelity Audio Devices - both Tube and Solid State
  50. Cheap eBay "zoe_tsan" tube kits - worth anything?
  51. Bell Vintage High Fidelity Audio Devices - both Tube and Solid State
  52. Small Tube Amp with Hum
  53. tube rectifier question
  54. Unison Research S6 schematics
  55. vacuum tube amplifiers should be produced like this?
  56. 6d22s to 6cj3
  57. pot in tube preamp
  58. Mable Audio vs. Suppo audio sound quality
  59. swdfasdfsdf
  60. measuring heater voltage
  61. Need a circuit around these tubes.
  62. Single-Ended 13E1 amplifier
  63. Whats' the max allowable / reasonable ripple in SE amp?
  64. What amp kits are out there?
  65. ECC84/6N14P for audio
  66. PSU ignorant
  67. How to define a quality OT?
  68. Looking for some build advice
  69. ASC oil caps vs M-tube cap for ps
  70. SS CCS and distortion
  71. the valve with no markings
  72. Pentode AB1 design school???
  73. Capability of Sony/Tamradio SE Output Transformers
  74. my CELLINI triode amp
  75. 45-based SET -> Pass Labs F4
  76. Testing Amplifiers - Speaker or dummy load
  77. Quiet amp hums with signal source or input directly tied to star earth??
  78. amp output testing
  79. S5 Amp Comparison?
  80. How to Ground a Preamp PCB Board?
  81. RH807 / 6L6GC g2 issues
  82. 2010: Replacement for Black Gate WKZ 100uF+100uF 500V
  83. sunn solarus guitar amp
  84. Converting Dynaco ST70 Power Transformer for 12.6V
  85. Simple CF with 5687/6900/E182CC
  86. World Audio Design 5881 Schematic needed
  87. PP triode transformer load
  88. 6V6 PP load line
  89. Need help to under stand this 6n3 Kit from ebay
  90. Help:ampeg svt 2 pro 100v>>240v
  91. Blown left channel
  92. Tube preamp build help-heaters
  93. Medium Power SET, EL156 based
  94. Concertina Splitter question - Need help
  95. 6V6 amp - schematic options
  96. Lectron pa50+jh50
  97. 4pr60b valve
  98. Transformer phase splitter
  99. Help! ground hum
  100. Question regarding Leak Stereo 20 and 6SN7 line stage preamp
  101. Recommended upgrades for Yaqin Tube Buffer ?
  102. 6J5 or 6S4 mic amp?
  103. ST-70 build, ideas and advice
  104. Yaqin MC-100B Help Needed!
  105. Preamp Aikido : 6ax5GT,12au7,2c51
  106. Heater of tube
  107. R-Core Winders
  108. 1946 philco amp, tuner, record player
  109. otions for drawing tube schematics on Mac..?
  110. Push/Pull Plate Load Choke - how to figure Inductance?
  111. 6aw8-a tube question
  112. Newbie needs a point in the right direction
  113. Minimalist PL519 OTL?
  114. Telefunken schematics
  115. parallel pp EL84
  116. AD1 Operating Question
  117. 6П3С-Е Russian NOS: Gas Problem
  118. Favourite EL34 circuit
  119. Medium power SET with parallel OP tubes
  120. sds labs into Pas3
  121. Low voltage 6922 preamp...wanting a schematic
  122. Voltage Gain on Long Tailed Drivers
  123. Purpose of 5842 tube?!?
  124. MA XDSE KT88 vs YAQIN MC-100B KT88
  125. JBL Amplifier story
  126. Fender tweed pro-amp clone
  127. Recommended spacing for multiple 5AR4's
  128. Cap choices coupling
  129. Output transformer for PP EL34 source
  130. mini max pre
  131. use 2 ohm speakers
  132. Ask tube rect 5u4c and JJ caps
  133. Adding caps to prevent oscilation in AF 5687
  134. Williamson on EL84. Is it worth doing?
  135. CCS and regulated B+
  136. Garter cross-coupled feedback
  137. soundcard protection Z ???
  138. Using a CCS on SE Output Stage
  139. First amp build... help please!
  140. multiple independent grid biasing from 1 mosfet
  141. Eico HF-81 modification opinion
  142. 4K or 5K Output Transformer
  143. Noisy input on Michaelson & Austin TVA-1
  144. Precision Electronics S-35 help,
  145. Rogers Cadet 3 Problem
  146. Triode Electronics VS Hammond
  147. TRIODE OPERATION USING THE SCREEN GRIDS AS THE CONTROL GRID - this work ?
  148. Start up delay needed???
  149. Connecting a stereo amp as a mono-block
  150. HQ-DHT (All tube DHT amli) 26-45-2A3
  151. 24A tube in triode mode, help !!!
  152. Amperite Ballast
  153. Need super quiet 6.3V filament supply schematic
  154. (Sound Space)Houston 2A3 Power Amplifier
  155. James Burgess 2A3 Monoblocks
  156. Funny tube tale from southamerica
  157. RCA 7189 Black Plates
  158. Preamp nasty noise and hum
  159. EDCOR VS One Electron
  160. Parallel output tubes/valves in push pull. Advantages/disadvantages?
  161. Robinhood output transformers?
  162. looking for help diagnosing volume loss on tube amplified reel to reel player
  163. Question about power consumption Hagerman Cornet Octal
  164. valve rectifier in PSUD
  165. Can you explain what this is ?
  166. volume rise with frequency problem
  167. 1 + 1 = 3 :)
  168. What would the perfect multi-way speaker for a tube amp look like?
  169. GU50 compared with EL84
  170. Counterpoint SA-4 manual and schematics
  171. Ever heard of a Valvo 16ECC ?
  172. the Reversal SRPP
  173. Want to build a C3G linestage
  174. 30A5 tubes
  175. Good speakers to match a K-12
  176. Driving Long Cables, how much current?
  177. twin triode question
  178. Am I going to blow up my 7189s
  179. How is wattage calculated when only using a single section?
  180. Counterpoint SA5 problems and a question.
  181. Headphone Amplifier 6922EH
  182. Fuse Clip for Small Plate Cap Use
  183. Advice sought on medium power triode for tube headphone amplifier
  184. Not the 111M; A Precise 116 Tube Tester
  185. Input stage
  186. Does anyone have any FFT plots from real Class-AB tube amps?
  187. Testing for a Damaged Output Trafo
  188. What has happened to WE Huntsville lately?
  189. Output Transformers Sun HCT 1003 KT
  190. Plexiglass case for small tubes?
  191. 100 Best Sound Tubes
  192. Input tube bias
  193. eschematic amplifier sinle end 12at7 6av6 6bq5
  194. Wiring - Audio Note Transformer Parallel Single-Ended 300B
  195. HV using zener diode
  196. Akai M8 rebuild up and running!
  197. Best current production 2a3
  198. what happens when plugging a stereo source into mono jack on a tube amp?
  199. Transformer coupled Gainclone idea.
  200. Audio Research VT100
  201. output transformer turns per volt
  202. valves and metal cones= bad mating?
  203. Why do you need a grid to ground resistor on a line stage?
  204. Need some help with RIAA Preamp
  205. Swapping transformer cores
  206. got hold of a bunch of tubes...
  207. output transformer secondary configuration
  208. WE/Ultrapath B+ Where?
  209. Blending 12ax7 parallel gain stages
  210. Sudden spark.
  211. Priboj Reborn
  212. Misunderstand of sijosae schematic
  213. 12AX7 Identification
  214. GM70 Datasheet Error!!
  215. Using old Hammond iron
  216. Need confirmation on LED bias for circuit
  217. Tone control problems
  218. Tube Parameter "Attenuation, Harmonic" What is it?
  219. Bias adjust on '65 Twin Reverb Reissue AB763 - 2004?
  220. Need HELP on Randall RGT100ES 6L6 to EL34
  221. Tube amp with Dual Triode
  222. Fisher X-101-C bias question
  223. DC Current-Regulated 300B filaments?
  224. Anyone ever use DC to heat rectifier tubes?
  225. Tantalum Resistor Watt?
  226. Help Choosing Power Supply Voltage Regulator Aikido Phono Amp
  227. Best sounding remote control volume
  228. plate and screen voltage
  229. 12AT7 plate voltage
  230. Latest LTspice giving crazy FFT results
  231. Dynakit PC-3A as a balance pre?
  232. e283cc better sounding than?
  233. Porchlight Scratchbuild
  234. No output and Loud squeals! Help!
  235. Low mu triode for phase splitter
  236. Help figuring which is the center tap???
  237. Help with Paco SA-40
  238. Best tube/sonics
  239. One Half 12AU7
  240. 1939 Novachord - 163 Tube Monster!!
  241. Gyrators to replace PSU chokes?
  242. Output trannies for 6as7
  243. 2 Toroids = 1 Isolation Transformer?
  244. Finding Transformer Building Supplies
  245. Sagging Heaters
  246. Kofi Annan in: "Kofi's Baby Huey"
  247. Point to point wiring help
  248. help !! PTT2s Line stage
  249. Rickard Berglund, Sweden
  250. "The Sussex Homebrew Valve Tester"

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