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  1. Problems with EM87 stereo level indicator for computer line out
  2. VR tube recommendation
  3. Mills MRA-5 resistors in tube circuits
  4. B&K Dyna-Quik 500 shows good tubes as Shorted
  5. Output transformers
  6. dbx 386 upgrade
  7. Sub 6n6p for 6n1p?
  8. SET Amp History in Japan
  9. Grid Bias or Cathode Bias
  10. Oscillating CJ PV-5
  11. FireFly Single Ended Tetrode
  12. Aikido front end for a SE 6C33S
  13. Ground Plane vs Star earth
  14. Circuit board with long post??
  15. ecc804 as Phase Splitter
  16. What can you do with a 3a5?
  17. Auto Wave soldering sockets
  18. Using diode for biasing
  19. No bass in 300b amp
  20. Tube socket and pin cleaning
  21. Help With Left Channel Hum
  22. Volume pot has rustling sound
  23. How best to distribute heater windings
  24. 30MB6 data
  25. Kofi Annan in: "Pushed and Pulled Back!"
  26. How dangerous is it to build an SET?
  27. 6as7 SE OTL
  28. Melody Roll
  29. 8417 Output Transformer
  30. Do you still need matched tubes if running a CCS ?
  31. Is a LM335 a direct replacement for a LM317T?
  32. Bias worry
  33. About the tube 6463
  34. awesome RCA MI 12158 tube amp project
  35. Crazy idea: Output tranny with constant magnetic gap?
  36. Most linear triode-strapped pentode
  37. Aikidio Phono Amp Questions
  38. Sample and Hold
  39. Big push-pull power for dummies
  40. Taking my KT88 SE E-linear amp to the next level (long)
  41. Aikido Janus Shunt PSU
  42. 12b4a phase splitter! The best?
  43. Sansui 500EA vs. 500A
  44. Cascoded Ring of Two for Plate Load
  45. 6SL7 distortion
  46. My new PL36 Push-Pull amp
  47. Thyratrons
  48. Tube ampl. for repair
  49. Date codes
  50. China Sountrack KT88 need shematic
  51. Anyone know anything about the Luxman A-2003 tube xover?
  52. Dynamic negative feedback?
  53. New bie: some questions, want to start DIY pre amp
  54. Power Transformer issue
  55. Guess That Tube
  56. Poor soundstage with SET 300B
  57. Dedicated ESL amp -- please comment
  58. Buzzing AC relay coil
  59. Stereo amp parallel wired to mono - possible?
  60. Need biasing advice, cathode biased amp.
  61. Before I go ahead and build this...
  62. Beginner Tube Stereo
  63. Morgan Jones and the ECC88/6922/6DJ8
  64. Help with matching speaker impedance to old tube amp
  65. srpp 2a3 power supply
  66. 12AX7 Tube Question
  67. New problem with Music Angel KT88
  68. Need help changing 12V heater to 6V
  69. Phono cathode follower challenge!!
  70. 6au6 for stereo?
  71. determining input/output impedance
  72. "Singing" output transformers
  73. Sustitute 5842 for EC86
  74. Vege-toobz ;)
  75. Bad channel in RCA Victor Console
  76. Did tone bypass on PAS what about caps
  77. Pe06/40n
  78. Anyone own an HH Scott LK-72 Integrated amp?
  79. HELP!! Howling K12G!!
  80. McIntosh MC60 Bias question
  81. Connecting a MF tube buffer directly to AKM DAC
  82. How to evaluate RF tubes for power and fidelity?
  83. Amity Amp Nutshell Audio
  84. 8086 Tubes?
  85. Lil' Devil P-P Amp
  86. 6SN7 vs. 6SL7 in Darling amp
  87. BBC AM8/6 mono tube amp schematic
  88. ST70 works with PAS but not another preamp
  89. Freds in 6X5 psu?
  90. Hi-End 50W Push-Amplifier inspired to AudioResearch
  91. Audioromy fu-29 - push pull!
  92. Help - MS-6V6 Yaqin schematic
  93. High Voltage Direct Drive amplifier for Plasma loudspeaker
  94. A Direct-Coupled Amplifier with Cathode Follower 6V6
  95. Separo- Full Pictorial Disclosure- opinions please
  96. Hammond Integrated Amp Kits 1950s
  97. LW6-180 schematic
  98. What to look for in a tube preamp?
  99. Russian-English Translation of 4P1L datasheet
  100. Can anybody identify this
  101. New York Audio Labs (NYAL) OTL1
  102. 5F6A via Mechanical Design
  103. New to tubes, need your advice.
  104. Brook 12a clone
  105. What type of audio transformers to use for tubes / valves
  106. need advice about building tube xover as a piece of art
  107. My first amp project, 6BQ5 (EL84) Single-End
  108. MA 6P1 6AQ5 Push-Pull Valve Tube Integrated Amplifier
  109. Stupid AB bias question
  110. Jamoke Direct to LPT/CCS PP EL34
  111. 4 x EL84 (6BQ5) in Push-Pull - Power Supply
  112. RFC: 300B driven by anode follower (6J5/6SN7)
  113. AVO VCM163 oddity
  114. Shuguang SG-50 ( RCA UX-250 replica) comments ???
  115. Novel mode of lithium battery bias
  116. power supply problem in my dream amp...
  117. Understanding how to wire up an Output Transformer
  118. Tube sound without the tube! (almost)
  119. Replace Bypass Cap?
  120. Sales On Sound Vintage 40s Tube Amp Info
  121. Why am I blowing fuses when connecting to next component?
  122. New owner to an old Heathkit AA-121
  123. New amp just finished 6080 pp opt
  124. Aikido as DAC I/V?
  125. Have two 572B-162L USA mfg tubes for trade
  126. Potentiometer question
  127. DHT circuit development for noob:)
  128. modifying a schematic
  129. TV-4a/u Weston USM Tube Tester: got a manual or schematic?
  130. Any idea what the primary impedance of the X101-B OPT is?
  131. Transformer Ratings
  132. noisy Gain knob
  133. overcooling question
  134. Ecl82 PP amp rebuild - suggestions?
  135. GU-50 PP amp project - Any favs?
  136. External DC power supply?
  137. shielded wire
  138. Noise & attenuation
  139. Thinking of building the SV300B Push-Pull
  140. Transformers for Push-Pull sweep tubes
  141. 12BG3's
  142. Valve audio circuit design questions.
  143. srpp & distortion
  144. Common cathode circuit values
  145. Resilient Mounts - Materials Science help please
  146. Raytheon 6G-B6 information
  147. Output transformers
  148. Filament winding wire diameter
  149. EL34 for ST70
  150. Building a Tube PreAmp for Teddy
  151. series capacitor values..
  152. Music Angel KT88 correct circuit
  153. G1=G2/mu Scaled Drive Strawman Design
  154. Output transformer for 845 SE triode amp
  155. "10 year burn in" T Shirt arrives!!!
  156. Thinking out loud -- VT-33 headphone amp?
  157. Elektor USB magic eye
  158. Maganavox Tubes Made in USA?
  159. Magic Eye VU Meter
  160. More EBAY Madness !!
  161. Major modifications of a Bogen AP-35
  162. Help with circuitmaker Pentode model
  163. Kt-120 ?
  164. Help with 6F5/6L6 rebuild...
  165. What Speaker for Webcor Tube Amp?
  166. Possible use for Pentagrid tubes??
  167. Rogers Cadet III integrated
  168. Quad II - Can 6P3S-E/GU50 be used as KT66 direct replacement?
  169. Using Grid2 screen signal -
  170. YAAGLI - Yet Another Aikido Ground Loop Issue
  171. Tube rectifier question.
  172. Dac with tube preamp?
  173. 5712 tube data needed
  174. 180 pF capacitor and other questions
  175. Simple question: Stereo to monos. How.
  176. Plate dissipation specs for 21KQ6
  177. Yaqin pre-out for subwoofer?
  178. Grid Chokes and choke load
  179. First tube amp project: GO!
  180. Hybrid Amp
  181. Circuit weirdness?
  182. How suitable is this tranformer for a Tube Amp Project?
  183. Best way to solder gold-plated components?
  184. Phono EQ hiss/white noise!!!
  185. help needed with grounded grid CCS upgrade
  186. Resistor wattage?
  187. SCORE! Kepco Tube Power supplies!
  188. 6SN7-2A3 SE Amp - James Transformers
  189. JJ ECC81/12AT7 Longevity
  190. 6V6GTA Tubes, H/K A300 Transformers, Now What?
  191. DIY valve radio
  192. U600 rectifier valve datasheet, please !!!
  193. Capacitors
  194. please help ! 5687 cd player buffer
  195. LK-72 mis-wired or am I confused?
  196. Need help with tube ID.
  197. spud amp 6c45pi vs 5842
  198. Air gapping transformers
  199. Voltage Measurement
  200. Cornell-Dubilier Caps Western Electric 91A Amplifier
  201. My take on a modern ST-70
  202. pls suggest a project
  203. Help with input stage driver for EL84 output stage
  204. Trying to make sense of the Sweet Peach
  205. Cornell-Dubilier Paper In Oil Capacitors
  206. lm3886 + cathode follower PS problem
  207. Completely differential amplifier final stage
  208. Capacitors in series for coupling?
  209. Help needed with messed-up-amp repairs.
  210. 6DJ8 tube schematic as balanced line stage?
  211. 6DJ8 (balanced) tube line stage
  212. Knight amp circut voltages
  213. Yet another passive attenuator
  214. What tube is this?
  215. El Cheapo ok for a first build?
  216. Anyone in Vancouver with a tube tester?
  217. How long can I expect a tube to last
  218. Output transformers... which one...?
  219. My MA845 modded and questions
  220. Sun Audio SV-2a3 HK Clone
  221. departure and tube slop
  222. Wire construction for capped tube plates
  223. Grid resistor location
  224. Meng Yue X1 trial
  225. Yarland pro845
  226. Faulty 5881 tube ?
  227. MF Xpre - help pls!!
  228. Heaters Voltage
  229. Pleas help identify this McIntosh valve amplifier
  230. Curves for Triode Connected 6EW6
  231. microwave oven transformer..
  232. Marantz 8b tubes
  233. Request: The schematic of Audible illusions MODULUS 3
  234. How many watts are really needed?
  235. Worn Tube Rectifier
  236. Bogen CHB35a Problem
  237. 29KQ6 Datasheet
  238. Help selecting a thermistor
  239. Beard P.101, new-to-me.
  240. Audioromy 838 Amp Broke need help..
  241. How to Read faded Tube Numbers
  242. Test data for 6H30PI & Hickok 539??
  243. Tube Text books "Reich"
  244. PCL805 parafeed SE idea + question
  245. 12V driver tubes for Engineer's Amp?
  246. >200W with 6BG6GA
  247. Leak stereo 20 modification
  248. Baby Huey components
  249. Monstrous 1kW amp!
  250. blue glow, how?

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