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  1. 6A3 test, what am I doing wrong?
  2. Goldline Phono Tube Pre Amp PCB - Analog Metric
  3. New Copper Nanoparticle Solder - Breakthrough?
  4. SRPP as a final stage? What do you think?
  5. Troughline Transmissionline theory explanation needed
  6. Help with odd bias method on Crown tube amp
  7. preamp output impedance matching
  8. KT66 Woes
  9. Help with Calibration: Hickok Western Electric KS-15750-L1 Tubes Tester
  10. Cascode driver
  11. 2a3 DC coupled
  12. ECF/PCF 200, 201 B10B 10Pin Tubes
  13. Homemade EL84 Push-Pull amp doesn't work
  14. Tamradio Transformer
  15. Variable HF oscilator
  16. eico st70 dimming house lights and slowing turntable`
  17. Amplifier Calculators
  18. Are any of these tubes useful for audio
  19. Modifying a J Sound Lab 2A3 amplifier
  20. Experimentation - Power transformer as output
  21. Mullard with ECC99 Phase Splitter
  22. Killed an Edcor OPT. How?
  23. Silvertone 1482 Fuse Troubleshooter help
  24. If it ain't broke....
  25. Silly DHT question VaMax
  26. Recommendations for preamps with PCC88
  27. 6h23n same as 6n23p
  28. Mighty Midget Amplifier and speaker requirements.
  29. Bias Supply protection
  30. Tube Amp Schematics
  31. POWER TRANSFORMER IDENTIFICATION NEEDED "26R90"
  32. 6sn7 driving Push Pull Parallel kt88's?
  33. help with an old Peak ST-100 - single ended 6GW8
  34. Designing an 801 SET Class A2 Amp
  35. Grid choke considerations for 300b
  36. SE poweramp with best bass performance
  37. 45 Tube IN SET Amp
  38. what will happen?
  39. ECL86 PP Amp - Very low frequency clicking
  40. motor run cap question
  41. Power Switch/Indicator Lamp Mod to S-5 Electronics K-501
  42. EL34 SET With No Driver Tube?
  43. Filter capacitors - motor run?
  44. Microwave transformers
  45. Capacitors in the cathode of preamp tubes
  46. How Many Tubes to a Rackspace?
  47. selenium diodes
  48. Is it possible to Oversize an SE OPT?
  49. questions about my ecc83 phono pre build
  50. PSU resistor temperature
  51. QE08-200
  52. Adding heater transformer to my 6b4g amp. help a noob please.
  53. Bogen CHB-35a Troubleshooting: Distortion, Power Tubes Very Hot
  54. Big Cap in luxman MB3045
  55. Question about 4x12 cabinet wiring
  56. What happened to Sakuma-san's website ?
  57. Should I ???
  58. Can you classify condition of tubes?
  59. Help: Hickok Western Electric KS-15750-L1 Tubes Tester Maintenance and Calibration
  60. ecc99 preamp into an amp
  61. AI 500 Volume pot advice wanted.
  62. eico st70 input impedance question
  63. Tube Preamp or Power Amp?
  64. pmillett "Engineer's Amplifier" to mono?
  65. Advice/schematics wanted for HF-81 opt project
  66. 7591 tube, can't find that number on tester.
  67. valve upgrade
  68. has anyone known about Ming Da amplifiers
  69. A nice little valve amplifier
  70. Use rectifier winding for 6.3V DC heater?
  71. Voltage Regulators Zener / Gas Reg
  72. Looking for first tube amp kit.
  73. Which choke is better ?
  74. UK input voltage question
  75. 1sh29b
  76. 6G2 amp - volume and tone play up on one input only
  77. One channel grainy sound
  78. anybody know 6BY5 plate resistance ?
  79. SE 6550
  80. Yaqin MC-100b Volume pot
  81. Pair of possible MC step ups - octal mount
  82. My Mighty Midget
  83. Conrad Johnson MV75 "update circuit drawing"
  84. Cheap Red LED bias on ecc83/12ax7
  85. stoneAmp
  86. Project thread: KT88 PP amp
  87. I need the voltages or schematic for a Magnavox 177.55 amp
  88. Different PSE output designs - which to use?
  89. Toroidal (adding a winding)
  90. Kondo Souga - audition
  91. Electrocube Polyestyrene caps
  92. a incar tube/valve line driver
  93. Before I punch the holes.. A quartet of EL84?
  94. Tubes Home Theater 4+1
  95. DAC direct out, not enough gain, help me build a driving stage.
  96. ultra linear aikido with linearizing pentode
  97. Scott 299
  98. OPTs With Multiple Secondaries
  99. Over Four Tons Of Tubes
  100. L channel lower output?
  101. 16LS Amp by S5 Electronics Questions
  102. Heathkit WM-5
  103. 6BL8 not on roll chart
  104. CJ PV-5 PS rebuild
  105. Attenuator for passive pre (LEAK ST 20)
  106. Help ID tubes Plz
  107. Data sheet and load line question
  108. Trouble with Silver to Black face twin mod.
  109. Grommes S35 booster amp output?
  110. dc filament heater - high impedance const. voltage
  111. Schematic for Modwright SWL 9.0se Preamp
  112. GZ37 substitutes
  113. output attenuation
  114. My humming home made tube amp
  115. Shared Cathodes 300b
  116. Bogen CHB-35 for Music...
  117. correctly connecting PT for 110/220 volts
  118. voltage divider
  119. "Bypass caps" and their effect on perceived sound
  120. Repair of Cayin HA-2 Tube Headphone Amp
  121. Best Drive for EL34
  122. Needing Schematic for Grommes LJ7 please.
  123. 6550C v. KT88
  124. ECC81 MU-Follower consumption
  125. Locating hum source
  126. c3g self oscillation problem - a newbie needs help!
  127. Voice of music console help
  128. One tube radio
  129. Triodes with better "look&feel"
  130. HV Supply
  131. Will this arrangement impact the input impedence of the cathode follower?
  132. Measuring preamp output impedance
  133. Capacitor from 120VAC to ground
  134. I have power but no sound???
  135. Using a function generator with a tube amp?
  136. What resistors to use on KT88s tubes?
  137. Opinions on Raysonic sp-200 + Raysonic 168 CD
  138. Lab power supply for testing tubes
  139. Could really use some help here!
  140. Help~ GU50 ?
  141. Some Power Supply Help
  142. newbies beware of lampizator srpp pdf
  143. Headphone output
  144. Has anyone played around with this as an amp front end?
  145. Help for Dynavox VR-70E
  146. Heathkit TT-1 (testing a 199, 99 tube)
  147. Tube And Transformer I/V Converter For Differential Current DAC
  148. Volume increases as amp warms up
  149. New 6V6 Build - Suggestions Needed
  150. Tubes Numbers
  151. VTL
  152. Visit to KR audio Prague 20120921
  153. Where did he posted it?
  154. Problems with PT325.2i
  155. What phono preamp with Dynaco MKIII
  156. opinions on supporting a past sale/trade deal
  157. Series connection of regulator tubes
  158. Preamp buzzes when volume is at zero?
  159. Hrrrrmphhhff. PSU design error and how to cope with it
  160. 300B fixed bias specs
  161. Battery filament for 4P1L
  162. Need pro help with this tube amp.
  163. Guitar Amps Output Transformer specs
  164. Need help with UTC transformer
  165. Very interesting 300b design
  166. How to understand the power output in this case?
  167. K12G Help
  168. all dht se PX4
  169. multiple output transformers per channel
  170. What would you change in this schematic? (PP amp)
  171. Anyone know where to get this type of breadboard?
  172. moscode 600 tube recommendations
  173. Should I use two separate OPTs for parallel output tubes?
  174. custom Tube chassis vendor
  175. VLS631 Thermal Delay
  176. 6au6 preamp stage
  177. Recognize this tubes...
  178. need help for my new amp: 6G6G driver & 807 SE
  179. Anyone heard of radiometal for transformer core?
  180. BCF-2
  181. Glowing Plates of Doom
  182. Modding Aikido to non-Aikido such as SRPP?
  183. DN2540 plate load.
  184. Help! Did my power cable blow his tubes?
  185. 211 amp SRPP driver
  186. Tubelab SE problem
  187. tube to replace opamps in cd player
  188. Jolida 302b started to crack/pop once a minute
  189. why it doesn't work - 300B SE power amp
  190. Trio KW-70 schematic also known as WX-400 under kenwood name
  191. New DC to AC to high voltage AC idea?
  192. LED bias for 6N1P driver
  193. DIY tube amp general inquiry
  194. 6as7 Aikido headphone amplifier
  195. Cold tubes in warm amp = smoke?
  196. Keroes: Direct-Coupled amplifier
  197. Tube ID help please.
  198. exactly HOW does a tube amp work? or a vacuum tube?
  199. David Berning's zh-230 - whats going on here?
  200. EICO HF86 scratch build question please
  201. what to do with a 12W 600ohm to 4/8 ohm output transformer?
  202. Telewatt VS71M
  203. Yamamoto 09S 300B SE Amp Problem
  204. Marantz-9
  205. 6V6 amp question
  206. Wood chassis
  207. My first project SE(T) into high end audio.
  208. Supermalloy for the Power transformer?
  209. Can I build a screen reg. with IXYS 10M45?
  210. Modified DynacoMkIV
  211. Refurbising Conrad Johnson Premier One
  212. Would using a 16ohm speaker damage my SE output transformers?
  213. Grommes/PE S-35 questions
  214. Concertina phase inverter with LED bias - is this completely wrong?
  215. Parafeed turn-on delay
  216. I'm looking for 6an8 (as V1) schematics
  217. New Project - EL84 PP and preamp - suggestions welcome
  218. The sound of modern transformers compared with vintage gear
  219. Determining the core cross sectional area, Afe, for SE OPT
  220. HT power supply high?
  221. under-run push pull
  222. 12B4 Linestage Woes
  223. Transcendent Sound Mini-Beast
  224. A Question About Positive Feedback
  225. Help with opera consonance M100plus
  226. Just received 2x PT Choke OT. best implementation ?
  227. Just received 2x PT Choke OT. best implementation ?
  228. Mystery Valve ID
  229. Oddball OT with extra secondary winding
  230. Help with Multi Section Can Cap replacement
  231. 600V bench variable supply to test transmitting valves
  232. Heater-cathode voltage spec interpretation
  233. Tell me why this wont work.
  234. headphone amp for Senns HD600
  235. Transformer orientation and suggestions.
  236. 12AU7 stereo SE mini-amp build!
  237. allen type 20a schematic
  238. 2010 lemon year for EH 6922 tubes
  239. Chinese GU50 PP
  240. Gain, Vpp and attenuation at each stage
  241. 6n14p headphone amp
  242. Heater Lifter
  243. KT88 & 6550 Pentode power output?
  244. Biasing Improved Williamson
  245. Vox V941 active FX Loop - I'm looking for schematics
  246. Lowering the Volume Control on Tube Amps
  247. Got the Hum out!! Thanks All
  248. How hot KT88 get? Anybody take a reading?
  249. Broskie Unbalancer
  250. Phase splitting transformer design

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