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  1. Toroidal (adding a winding)
  2. Kondo Souga - audition
  3. Electrocube Polyestyrene caps
  4. a incar tube/valve line driver
  5. Before I punch the holes.. A quartet of EL84?
  6. Tubes Home Theater 4+1
  7. DAC direct out, not enough gain, help me build a driving stage.
  8. ultra linear aikido with linearizing pentode
  9. Scott 299
  10. OPTs With Multiple Secondaries
  11. Over Four Tons Of Tubes
  12. L channel lower output?
  13. 16LS Amp by S5 Electronics Questions
  14. Heathkit WM-5
  15. 6BL8 not on roll chart
  16. CJ PV-5 PS rebuild
  17. Attenuator for passive pre (LEAK ST 20)
  18. Help ID tubes Plz
  19. Data sheet and load line question
  20. Trouble with Silver to Black face twin mod.
  21. Grommes S35 booster amp output?
  22. dc filament heater - high impedance const. voltage
  23. Schematic for Modwright SWL 9.0se Preamp
  24. GZ37 substitutes
  25. output attenuation
  26. My humming home made tube amp
  27. Shared Cathodes 300b
  28. Bogen CHB-35 for Music...
  29. correctly connecting PT for 110/220 volts
  30. voltage divider
  31. "Bypass caps" and their effect on perceived sound
  32. Repair of Cayin HA-2 Tube Headphone Amp
  33. Best Drive for EL34
  34. Needing Schematic for Grommes LJ7 please.
  35. 6550C v. KT88
  36. ECC81 MU-Follower consumption
  37. Locating hum source
  38. c3g self oscillation problem - a newbie needs help!
  39. Voice of music console help
  40. One tube radio
  41. Triodes with better "look&feel"
  42. HV Supply
  43. Will this arrangement impact the input impedence of the cathode follower?
  44. Measuring preamp output impedance
  45. Capacitor from 120VAC to ground
  46. I have power but no sound???
  47. Using a function generator with a tube amp?
  48. What resistors to use on KT88s tubes?
  49. Opinions on Raysonic sp-200 + Raysonic 168 CD
  50. Lab power supply for testing tubes
  51. Could really use some help here!
  52. Help~ GU50 ?
  53. Some Power Supply Help
  54. newbies beware of lampizator srpp pdf
  55. Headphone output
  56. Has anyone played around with this as an amp front end?
  57. Help for Dynavox VR-70E
  58. Heathkit TT-1 (testing a 199, 99 tube)
  59. Tube And Transformer I/V Converter For Differential Current DAC
  60. Volume increases as amp warms up
  61. New 6V6 Build - Suggestions Needed
  62. Tubes Numbers
  63. VTL
  64. Visit to KR audio Prague 20120921
  65. Where did he posted it?
  66. Problems with PT325.2i
  67. What phono preamp with Dynaco MKIII
  68. opinions on supporting a past sale/trade deal
  69. Series connection of regulator tubes
  70. Preamp buzzes when volume is at zero?
  71. Hrrrrmphhhff. PSU design error and how to cope with it
  72. 300B fixed bias specs
  73. Battery filament for 4P1L
  74. Need pro help with this tube amp.
  75. Guitar Amps Output Transformer specs
  76. Need help with UTC transformer
  77. Very interesting 300b design
  78. How to understand the power output in this case?
  79. K12G Help
  80. all dht se PX4
  81. multiple output transformers per channel
  82. What would you change in this schematic? (PP amp)
  83. Anyone know where to get this type of breadboard?
  84. moscode 600 tube recommendations
  85. Should I use two separate OPTs for parallel output tubes?
  86. custom Tube chassis vendor
  87. VLS631 Thermal Delay
  88. 6au6 preamp stage
  89. Recognize this tubes...
  90. need help for my new amp: 6G6G driver & 807 SE
  91. Anyone heard of radiometal for transformer core?
  92. BCF-2
  93. Glowing Plates of Doom
  94. Modding Aikido to non-Aikido such as SRPP?
  95. DN2540 plate load.
  96. Help! Did my power cable blow his tubes?
  97. 211 amp SRPP driver
  98. Tubelab SE problem
  99. tube to replace opamps in cd player
  100. Jolida 302b started to crack/pop once a minute
  101. why it doesn't work - 300B SE power amp
  102. Trio KW-70 schematic also known as WX-400 under kenwood name
  103. New DC to AC to high voltage AC idea?
  104. LED bias for 6N1P driver
  105. DIY tube amp general inquiry
  106. 6as7 Aikido headphone amplifier
  107. Cold tubes in warm amp = smoke?
  108. Keroes: Direct-Coupled amplifier
  109. Tube ID help please.
  110. exactly HOW does a tube amp work? or a vacuum tube?
  111. David Berning's zh-230 - whats going on here?
  112. EICO HF86 scratch build question please
  113. what to do with a 12W 600ohm to 4/8 ohm output transformer?
  114. Telewatt VS71M
  115. Yamamoto 09S 300B SE Amp Problem
  116. Marantz-9
  117. 6V6 amp question
  118. Wood chassis
  119. My first project SE(T) into high end audio.
  120. Supermalloy for the Power transformer?
  121. Can I build a screen reg. with IXYS 10M45?
  122. Modified DynacoMkIV
  123. Refurbising Conrad Johnson Premier One
  124. Would using a 16ohm speaker damage my SE output transformers?
  125. Grommes/PE S-35 questions
  126. Concertina phase inverter with LED bias - is this completely wrong?
  127. Parafeed turn-on delay
  128. I'm looking for 6an8 (as V1) schematics
  129. New Project - EL84 PP and preamp - suggestions welcome
  130. The sound of modern transformers compared with vintage gear
  131. Determining the core cross sectional area, Afe, for SE OPT
  132. HT power supply high?
  133. under-run push pull
  134. 12B4 Linestage Woes
  135. Transcendent Sound Mini-Beast
  136. A Question About Positive Feedback
  137. Help with opera consonance M100plus
  138. Just received 2x PT Choke OT. best implementation ?
  139. Just received 2x PT Choke OT. best implementation ?
  140. Mystery Valve ID
  141. Oddball OT with extra secondary winding
  142. Help with Multi Section Can Cap replacement
  143. 600V bench variable supply to test transmitting valves
  144. Heater-cathode voltage spec interpretation
  145. Tell me why this wont work.
  146. headphone amp for Senns HD600
  147. Transformer orientation and suggestions.
  148. 12AU7 stereo SE mini-amp build!
  149. allen type 20a schematic
  150. 2010 lemon year for EH 6922 tubes
  151. Chinese GU50 PP
  152. Gain, Vpp and attenuation at each stage
  153. 6n14p headphone amp
  154. Heater Lifter
  155. KT88 & 6550 Pentode power output?
  156. Biasing Improved Williamson
  157. Vox V941 active FX Loop - I'm looking for schematics
  158. Lowering the Volume Control on Tube Amps
  159. Got the Hum out!! Thanks All
  160. How hot KT88 get? Anybody take a reading?
  161. Broskie Unbalancer
  162. Phase splitting transformer design
  163. Red plate KT88
  164. 6N16B preamp
  165. Eimac 450th nos
  166. how much clearance above tubes for KT88 enclosure
  167. Cathode preheating???
  168. RIAA Question - Power
  169. Linearity of Red RCA 5692
  170. What gauge enclosure for KT88 AMP?
  171. Output Transformer Issue???
  172. Maggie 8802 placement issue
  173. Can you recommend a tube tester?
  174. 6550 tube protection socket
  175. PT laminations are usable as OT laminations ?
  176. Are These Authentic Russian Military 1578 Vacuum Tubes?
  177. Amp ID Please
  178. Help for Main Transformer Spec for CCDA
  179. Switching SE and balanced inputs/outputs
  180. kt88 PP rectifier.
  181. How much Blue glow is ok?
  182. Recommendations on How To mono a pre amplifier?
  183. 6H6pi curves available?
  184. 1p24b
  185. help, Built from scratch Kalamazoo 2 noise
  186. 5CZ5/5BQ7A single ended amp
  187. Hopefully a simple question.
  188. 211 tube recommendations
  189. Need HELP with TUBE IMP
  190. Another unknown tube
  191. Triode Bias 101
  192. Bogen MO-200A transplant /conversion
  193. 5U4 o bridge rectifier
  194. Choosing the right transformer
  195. V-Cap Help
  196. Older tubes sound better
  197. 6J7 preamp
  198. Menygue mini/music angel amp
  199. Driving a Behringer INuke Nu1000
  200. cathode follower ecc88 on 60volt
  201. Docs for Heathkit AA-23?
  202. 45 tube amp schematic
  203. Old TO-R s15u, Should i fix it?
  204. Tube ID
  205. VTL driver tube question
  206. Fun with junk EL84 SE
  207. Enclosure ideas
  208. Burn in procedure for NOS necessary?
  209. Strange Lorenz ECC81 12AT7
  210. Amplifier first start up; Plays tone of signal generator with no speakers!
  211. Reports of the death of Audiophool have been greatly exaggerated
  212. help me identify some vintage tubes // need suggestions for possible applications!
  213. Lowering cost of audio output transformer
  214. Source for transformers in Europe
  215. morgan Jones HT caps & Anode Loads
  216. Tuning Negative feedback
  217. Hickok reference 6L6 for calibration..
  218. SET-NO FEEDBACK amplifier performance
  219. Stereo class A 6+6W - 2x 6L6G 1 x 6N2P
  220. Console Amplifier Pull:Voltages over Spec
  221. Help! My EL34B based amp arced at full volume.
  222. MUZAK 50's tube amp
  223. Tube break-in?
  224. Custom power tranny specs recommendations for 300B pse monoblocs
  225. mosfet source follower output stage.
  226. Winter upgrade project - new heating unit
  227. 6KM8 amp
  228. Power and output transformers to ground.
  229. Help with this schematic? B+? B++?
  230. What to do with this old amp? suggestions please.
  231. DIY CAT SL1 preamp
  232. Phase inverter, your comments welcomed!
  233. Basic Bias Question for PP Amp
  234. Oddwatt 5751/6550
  235. Please help me to identify Telefunken PCC ...
  236. Modification of 300B SE Amplifier
  237. 300B Tube and Amp Questions
  238. ST70 "Imposter"
  239. cathode follower question
  240. marconi tubes....can someone idntify these
  241. DeathTrap400 : : A Pretty Damn Good 300B Amp
  242. SOS: First Build, Lots of Hum
  243. 1959 Silvertone Syntronic Can Capacitor question
  244. KR Audio Marconi R valve amp?
  245. Distortion
  246. Tung-Sol 6098/6AR6 Substitution
  247. Dropout in RTP3 phono stage
  248. Audio Research EC-3 modification
  249. 300b all-DHT SET
  250. My first tube project !

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