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  1. 16LS Amp by S5 Electronics Questions
  2. Heathkit WM-5
  3. 6BL8 not on roll chart
  4. CJ PV-5 PS rebuild
  5. Attenuator for passive pre (LEAK ST 20)
  6. Help ID tubes Plz
  7. Data sheet and load line question
  8. Trouble with Silver to Black face twin mod.
  9. Grommes S35 booster amp output?
  10. dc filament heater - high impedance const. voltage
  11. Schematic for Modwright SWL 9.0se Preamp
  12. GZ37 substitutes
  13. output attenuation
  14. My humming home made tube amp
  15. Shared Cathodes 300b
  16. Bogen CHB-35 for Music...
  17. correctly connecting PT for 110/220 volts
  18. voltage divider
  19. "Bypass caps" and their effect on perceived sound
  20. Repair of Cayin HA-2 Tube Headphone Amp
  21. Best Drive for EL34
  22. Needing Schematic for Grommes LJ7 please.
  23. 6550C v. KT88
  24. ECC81 MU-Follower consumption
  25. Locating hum source
  26. c3g self oscillation problem - a newbie needs help!
  27. Voice of music console help
  28. One tube radio
  29. Triodes with better "look&feel"
  30. HV Supply
  31. Will this arrangement impact the input impedence of the cathode follower?
  32. Measuring preamp output impedance
  33. Capacitor from 120VAC to ground
  34. I have power but no sound???
  35. Using a function generator with a tube amp?
  36. What resistors to use on KT88s tubes?
  37. Opinions on Raysonic sp-200 + Raysonic 168 CD
  38. Lab power supply for testing tubes
  39. Could really use some help here!
  40. Help~ GU50 ?
  41. Some Power Supply Help
  42. newbies beware of lampizator srpp pdf
  43. Headphone output
  44. Has anyone played around with this as an amp front end?
  45. Help for Dynavox VR-70E
  46. Heathkit TT-1 (testing a 199, 99 tube)
  47. Tube And Transformer I/V Converter For Differential Current DAC
  48. Volume increases as amp warms up
  49. New 6V6 Build - Suggestions Needed
  50. Tubes Numbers
  51. VTL
  52. Visit to KR audio Prague 20120921
  53. Where did he posted it?
  54. Problems with PT325.2i
  55. What phono preamp with Dynaco MKIII
  56. opinions on supporting a past sale/trade deal
  57. Series connection of regulator tubes
  58. Preamp buzzes when volume is at zero?
  59. Hrrrrmphhhff. PSU design error and how to cope with it
  60. 300B fixed bias specs
  61. Battery filament for 4P1L
  62. Need pro help with this tube amp.
  63. Guitar Amps Output Transformer specs
  64. Need help with UTC transformer
  65. Very interesting 300b design
  66. How to understand the power output in this case?
  67. K12G Help
  68. all dht se PX4
  69. multiple output transformers per channel
  70. What would you change in this schematic? (PP amp)
  71. Anyone know where to get this type of breadboard?
  72. moscode 600 tube recommendations
  73. Should I use two separate OPTs for parallel output tubes?
  74. custom Tube chassis vendor
  75. VLS631 Thermal Delay
  76. 6au6 preamp stage
  77. Recognize this tubes...
  78. need help for my new amp: 6G6G driver & 807 SE
  79. Anyone heard of radiometal for transformer core?
  80. BCF-2
  81. Glowing Plates of Doom
  82. Modding Aikido to non-Aikido such as SRPP?
  83. DN2540 plate load.
  84. Help! Did my power cable blow his tubes?
  85. 211 amp SRPP driver
  86. Tubelab SE problem
  87. tube to replace opamps in cd player
  88. Jolida 302b started to crack/pop once a minute
  89. why it doesn't work - 300B SE power amp
  90. Trio KW-70 schematic also known as WX-400 under kenwood name
  91. New DC to AC to high voltage AC idea?
  92. LED bias for 6N1P driver
  93. DIY tube amp general inquiry
  94. 6as7 Aikido headphone amplifier
  95. Cold tubes in warm amp = smoke?
  96. Keroes: Direct-Coupled amplifier
  97. Tube ID help please.
  98. exactly HOW does a tube amp work? or a vacuum tube?
  99. David Berning's zh-230 - whats going on here?
  100. EICO HF86 scratch build question please
  101. what to do with a 12W 600ohm to 4/8 ohm output transformer?
  102. Telewatt VS71M
  103. Yamamoto 09S 300B SE Amp Problem
  104. Marantz-9
  105. 6V6 amp question
  106. Wood chassis
  107. My first project SE(T) into high end audio.
  108. Supermalloy for the Power transformer?
  109. Can I build a screen reg. with IXYS 10M45?
  110. Modified DynacoMkIV
  111. Refurbising Conrad Johnson Premier One
  112. Would using a 16ohm speaker damage my SE output transformers?
  113. Grommes/PE S-35 questions
  114. Concertina phase inverter with LED bias - is this completely wrong?
  115. Parafeed turn-on delay
  116. I'm looking for 6an8 (as V1) schematics
  117. New Project - EL84 PP and preamp - suggestions welcome
  118. The sound of modern transformers compared with vintage gear
  119. Determining the core cross sectional area, Afe, for SE OPT
  120. HT power supply high?
  121. under-run push pull
  122. 12B4 Linestage Woes
  123. Transcendent Sound Mini-Beast
  124. A Question About Positive Feedback
  125. Help with opera consonance M100plus
  126. Just received 2x PT Choke OT. best implementation ?
  127. Just received 2x PT Choke OT. best implementation ?
  128. Mystery Valve ID
  129. Oddball OT with extra secondary winding
  130. Help with Multi Section Can Cap replacement
  131. 600V bench variable supply to test transmitting valves
  132. Heater-cathode voltage spec interpretation
  133. Tell me why this wont work.
  134. headphone amp for Senns HD600
  135. Transformer orientation and suggestions.
  136. 12AU7 stereo SE mini-amp build!
  137. allen type 20a schematic
  138. 2010 lemon year for EH 6922 tubes
  139. Chinese GU50 PP
  140. Gain, Vpp and attenuation at each stage
  141. 6n14p headphone amp
  142. Heater Lifter
  143. KT88 & 6550 Pentode power output?
  144. Biasing Improved Williamson
  145. Vox V941 active FX Loop - I'm looking for schematics
  146. Lowering the Volume Control on Tube Amps
  147. Got the Hum out!! Thanks All
  148. How hot KT88 get? Anybody take a reading?
  149. Broskie Unbalancer
  150. Phase splitting transformer design
  151. Red plate KT88
  152. 6N16B preamp
  153. Eimac 450th nos
  154. how much clearance above tubes for KT88 enclosure
  155. Cathode preheating???
  156. RIAA Question - Power
  157. Linearity of Red RCA 5692
  158. What gauge enclosure for KT88 AMP?
  159. Output Transformer Issue???
  160. Maggie 8802 placement issue
  161. Can you recommend a tube tester?
  162. 6550 tube protection socket
  163. PT laminations are usable as OT laminations ?
  164. Are These Authentic Russian Military 1578 Vacuum Tubes?
  165. Amp ID Please
  166. Help for Main Transformer Spec for CCDA
  167. Switching SE and balanced inputs/outputs
  168. kt88 PP rectifier.
  169. How much Blue glow is ok?
  170. Recommendations on How To mono a pre amplifier?
  171. 6H6pi curves available?
  172. 1p24b
  173. help, Built from scratch Kalamazoo 2 noise
  174. 5CZ5/5BQ7A single ended amp
  175. Hopefully a simple question.
  176. 211 tube recommendations
  177. Need HELP with TUBE IMP
  178. Another unknown tube
  179. Triode Bias 101
  180. Bogen MO-200A transplant /conversion
  181. 5U4 o bridge rectifier
  182. Choosing the right transformer
  183. V-Cap Help
  184. Older tubes sound better
  185. 6J7 preamp
  186. Menygue mini/music angel amp
  187. Driving a Behringer INuke Nu1000
  188. cathode follower ecc88 on 60volt
  189. Docs for Heathkit AA-23?
  190. 45 tube amp schematic
  191. Old TO-R s15u, Should i fix it?
  192. Tube ID
  193. VTL driver tube question
  194. Fun with junk EL84 SE
  195. Enclosure ideas
  196. Burn in procedure for NOS necessary?
  197. Strange Lorenz ECC81 12AT7
  198. Amplifier first start up; Plays tone of signal generator with no speakers!
  199. Reports of the death of Audiophool have been greatly exaggerated
  200. help me identify some vintage tubes // need suggestions for possible applications!
  201. Lowering cost of audio output transformer
  202. Source for transformers in Europe
  203. morgan Jones HT caps & Anode Loads
  204. Tuning Negative feedback
  205. Hickok reference 6L6 for calibration..
  206. SET-NO FEEDBACK amplifier performance
  207. Stereo class A 6+6W - 2x 6L6G 1 x 6N2P
  208. Console Amplifier Pull:Voltages over Spec
  209. Help! My EL34B based amp arced at full volume.
  210. MUZAK 50's tube amp
  211. Tube break-in?
  212. Custom power tranny specs recommendations for 300B pse monoblocs
  213. mosfet source follower output stage.
  214. Winter upgrade project - new heating unit
  215. 6KM8 amp
  216. Power and output transformers to ground.
  217. Help with this schematic? B+? B++?
  218. What to do with this old amp? suggestions please.
  219. DIY CAT SL1 preamp
  220. Phase inverter, your comments welcomed!
  221. Basic Bias Question for PP Amp
  222. Oddwatt 5751/6550
  223. Please help me to identify Telefunken PCC ...
  224. Modification of 300B SE Amplifier
  225. 300B Tube and Amp Questions
  226. ST70 "Imposter"
  227. cathode follower question
  228. marconi tubes....can someone idntify these
  229. DeathTrap400 : : A Pretty Damn Good 300B Amp
  230. SOS: First Build, Lots of Hum
  231. 1959 Silvertone Syntronic Can Capacitor question
  232. KR Audio Marconi R valve amp?
  233. Distortion
  234. Tung-Sol 6098/6AR6 Substitution
  235. Dropout in RTP3 phono stage
  236. Audio Research EC-3 modification
  237. 300b all-DHT SET
  238. My first tube project !
  239. Trouble with homebuilt amp
  240. Music angel el34b problem
  241. Elecrolytic capacitor reforming
  242. The end of tubes?
  243. Two stages EL34 power amplifier
  244. 7199 replacement in AMPEX 6973
  245. IT coupled tube-SS hybrid amp suggestion- needs development
  246. Original Cary CAD-300se upgrades?
  247. Convert Integrated Tube Preamp to an amplifier
  248. McCurdy AM405 Schematics
  249. Looking for Neumann N149 power supply schematic
  250. B&K model 747 tube tester for EL34

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