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  1. Project thread: KT88 PP amp
  2. I need the voltages or schematic for a Magnavox 177.55 amp
  3. Different PSE output designs - which to use?
  4. Toroidal (adding a winding)
  5. Kondo Souga - audition
  6. Electrocube Polyestyrene caps
  7. a incar tube/valve line driver
  8. Before I punch the holes.. A quartet of EL84?
  9. Tubes Home Theater 4+1
  10. DAC direct out, not enough gain, help me build a driving stage.
  11. ultra linear aikido with linearizing pentode
  12. Scott 299
  13. OPTs With Multiple Secondaries
  14. Over Four Tons Of Tubes
  15. L channel lower output?
  16. 16LS Amp by S5 Electronics Questions
  17. Heathkit WM-5
  18. 6BL8 not on roll chart
  19. CJ PV-5 PS rebuild
  20. Attenuator for passive pre (LEAK ST 20)
  21. Help ID tubes Plz
  22. Data sheet and load line question
  23. Trouble with Silver to Black face twin mod.
  24. Grommes S35 booster amp output?
  25. dc filament heater - high impedance const. voltage
  26. Schematic for Modwright SWL 9.0se Preamp
  27. GZ37 substitutes
  28. output attenuation
  29. My humming home made tube amp
  30. Shared Cathodes 300b
  31. Bogen CHB-35 for Music...
  32. correctly connecting PT for 110/220 volts
  33. voltage divider
  34. "Bypass caps" and their effect on perceived sound
  35. Repair of Cayin HA-2 Tube Headphone Amp
  36. Best Drive for EL34
  37. Needing Schematic for Grommes LJ7 please.
  38. 6550C v. KT88
  39. ECC81 MU-Follower consumption
  40. Locating hum source
  41. c3g self oscillation problem - a newbie needs help!
  42. Voice of music console help
  43. One tube radio
  44. Triodes with better "look&feel"
  45. HV Supply
  46. Will this arrangement impact the input impedence of the cathode follower?
  47. Measuring preamp output impedance
  48. Capacitor from 120VAC to ground
  49. I have power but no sound???
  50. Using a function generator with a tube amp?
  51. What resistors to use on KT88s tubes?
  52. Opinions on Raysonic sp-200 + Raysonic 168 CD
  53. Lab power supply for testing tubes
  54. Could really use some help here!
  55. Help~ GU50 ?
  56. Some Power Supply Help
  57. newbies beware of lampizator srpp pdf
  58. Headphone output
  59. Has anyone played around with this as an amp front end?
  60. Help for Dynavox VR-70E
  61. Heathkit TT-1 (testing a 199, 99 tube)
  62. Tube And Transformer I/V Converter For Differential Current DAC
  63. Volume increases as amp warms up
  64. New 6V6 Build - Suggestions Needed
  65. Tubes Numbers
  66. VTL
  67. Visit to KR audio Prague 20120921
  68. Where did he posted it?
  69. Problems with PT325.2i
  70. What phono preamp with Dynaco MKIII
  71. opinions on supporting a past sale/trade deal
  72. Series connection of regulator tubes
  73. Preamp buzzes when volume is at zero?
  74. Hrrrrmphhhff. PSU design error and how to cope with it
  75. 300B fixed bias specs
  76. Battery filament for 4P1L
  77. Need pro help with this tube amp.
  78. Guitar Amps Output Transformer specs
  79. Need help with UTC transformer
  80. Very interesting 300b design
  81. How to understand the power output in this case?
  82. K12G Help
  83. all dht se PX4
  84. multiple output transformers per channel
  85. What would you change in this schematic? (PP amp)
  86. Anyone know where to get this type of breadboard?
  87. moscode 600 tube recommendations
  88. Should I use two separate OPTs for parallel output tubes?
  89. custom Tube chassis vendor
  90. VLS631 Thermal Delay
  91. 6au6 preamp stage
  92. Recognize this tubes...
  93. need help for my new amp: 6G6G driver & 807 SE
  94. Anyone heard of radiometal for transformer core?
  95. BCF-2
  96. Glowing Plates of Doom
  97. Modding Aikido to non-Aikido such as SRPP?
  98. DN2540 plate load.
  99. Help! Did my power cable blow his tubes?
  100. 211 amp SRPP driver
  101. Tubelab SE problem
  102. tube to replace opamps in cd player
  103. Jolida 302b started to crack/pop once a minute
  104. why it doesn't work - 300B SE power amp
  105. Trio KW-70 schematic also known as WX-400 under kenwood name
  106. New DC to AC to high voltage AC idea?
  107. LED bias for 6N1P driver
  108. DIY tube amp general inquiry
  109. 6as7 Aikido headphone amplifier
  110. Cold tubes in warm amp = smoke?
  111. Keroes: Direct-Coupled amplifier
  112. Tube ID help please.
  113. exactly HOW does a tube amp work? or a vacuum tube?
  114. David Berning's zh-230 - whats going on here?
  115. EICO HF86 scratch build question please
  116. what to do with a 12W 600ohm to 4/8 ohm output transformer?
  117. Telewatt VS71M
  118. Yamamoto 09S 300B SE Amp Problem
  119. Marantz-9
  120. 6V6 amp question
  121. Wood chassis
  122. My first project SE(T) into high end audio.
  123. Supermalloy for the Power transformer?
  124. Can I build a screen reg. with IXYS 10M45?
  125. Modified DynacoMkIV
  126. Refurbising Conrad Johnson Premier One
  127. Would using a 16ohm speaker damage my SE output transformers?
  128. Grommes/PE S-35 questions
  129. Concertina phase inverter with LED bias - is this completely wrong?
  130. Parafeed turn-on delay
  131. I'm looking for 6an8 (as V1) schematics
  132. New Project - EL84 PP and preamp - suggestions welcome
  133. The sound of modern transformers compared with vintage gear
  134. Determining the core cross sectional area, Afe, for SE OPT
  135. HT power supply high?
  136. under-run push pull
  137. 12B4 Linestage Woes
  138. Transcendent Sound Mini-Beast
  139. A Question About Positive Feedback
  140. Help with opera consonance M100plus
  141. Just received 2x PT Choke OT. best implementation ?
  142. Just received 2x PT Choke OT. best implementation ?
  143. Mystery Valve ID
  144. Oddball OT with extra secondary winding
  145. Help with Multi Section Can Cap replacement
  146. 600V bench variable supply to test transmitting valves
  147. Heater-cathode voltage spec interpretation
  148. Tell me why this wont work.
  149. headphone amp for Senns HD600
  150. Transformer orientation and suggestions.
  151. 12AU7 stereo SE mini-amp build!
  152. allen type 20a schematic
  153. 2010 lemon year for EH 6922 tubes
  154. Chinese GU50 PP
  155. Gain, Vpp and attenuation at each stage
  156. 6n14p headphone amp
  157. Heater Lifter
  158. KT88 & 6550 Pentode power output?
  159. Biasing Improved Williamson
  160. Vox V941 active FX Loop - I'm looking for schematics
  161. Lowering the Volume Control on Tube Amps
  162. Got the Hum out!! Thanks All
  163. How hot KT88 get? Anybody take a reading?
  164. Broskie Unbalancer
  165. Phase splitting transformer design
  166. Red plate KT88
  167. 6N16B preamp
  168. Eimac 450th nos
  169. how much clearance above tubes for KT88 enclosure
  170. Cathode preheating???
  171. RIAA Question - Power
  172. Linearity of Red RCA 5692
  173. What gauge enclosure for KT88 AMP?
  174. Output Transformer Issue???
  175. Maggie 8802 placement issue
  176. Can you recommend a tube tester?
  177. 6550 tube protection socket
  178. PT laminations are usable as OT laminations ?
  179. Are These Authentic Russian Military 1578 Vacuum Tubes?
  180. Amp ID Please
  181. Help for Main Transformer Spec for CCDA
  182. Switching SE and balanced inputs/outputs
  183. kt88 PP rectifier.
  184. How much Blue glow is ok?
  185. Recommendations on How To mono a pre amplifier?
  186. 6H6pi curves available?
  187. 1p24b
  188. help, Built from scratch Kalamazoo 2 noise
  189. 5CZ5/5BQ7A single ended amp
  190. Hopefully a simple question.
  191. 211 tube recommendations
  192. Need HELP with TUBE IMP
  193. Another unknown tube
  194. Triode Bias 101
  195. Bogen MO-200A transplant /conversion
  196. 5U4 o bridge rectifier
  197. Choosing the right transformer
  198. V-Cap Help
  199. Older tubes sound better
  200. 6J7 preamp
  201. Menygue mini/music angel amp
  202. Driving a Behringer INuke Nu1000
  203. cathode follower ecc88 on 60volt
  204. Docs for Heathkit AA-23?
  205. 45 tube amp schematic
  206. Old TO-R s15u, Should i fix it?
  207. Tube ID
  208. VTL driver tube question
  209. Fun with junk EL84 SE
  210. Enclosure ideas
  211. Burn in procedure for NOS necessary?
  212. Strange Lorenz ECC81 12AT7
  213. Amplifier first start up; Plays tone of signal generator with no speakers!
  214. Reports of the death of Audiophool have been greatly exaggerated
  215. help me identify some vintage tubes // need suggestions for possible applications!
  216. Lowering cost of audio output transformer
  217. Source for transformers in Europe
  218. morgan Jones HT caps & Anode Loads
  219. Tuning Negative feedback
  220. Hickok reference 6L6 for calibration..
  221. SET-NO FEEDBACK amplifier performance
  222. Stereo class A 6+6W - 2x 6L6G 1 x 6N2P
  223. Console Amplifier Pull:Voltages over Spec
  224. Help! My EL34B based amp arced at full volume.
  225. MUZAK 50's tube amp
  226. Tube break-in?
  227. Custom power tranny specs recommendations for 300B pse monoblocs
  228. mosfet source follower output stage.
  229. Winter upgrade project - new heating unit
  230. 6KM8 amp
  231. Power and output transformers to ground.
  232. Help with this schematic? B+? B++?
  233. What to do with this old amp? suggestions please.
  234. DIY CAT SL1 preamp
  235. Phase inverter, your comments welcomed!
  236. Basic Bias Question for PP Amp
  237. Oddwatt 5751/6550
  238. Please help me to identify Telefunken PCC ...
  239. Modification of 300B SE Amplifier
  240. 300B Tube and Amp Questions
  241. ST70 "Imposter"
  242. cathode follower question
  243. marconi tubes....can someone idntify these
  244. DeathTrap400 : : A Pretty Damn Good 300B Amp
  245. SOS: First Build, Lots of Hum
  246. 1959 Silvertone Syntronic Can Capacitor question
  247. KR Audio Marconi R valve amp?
  248. Distortion
  249. Tung-Sol 6098/6AR6 Substitution
  250. Dropout in RTP3 phono stage

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