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  1. My last el84 PP tube amplifier
  2. Ultrapath - Advantages?
  3. Phono preamp with c/em2
  4. 12AY7 plate current
  5. OPT identification
  6. Resistor values at supply to anodes
  7. Typical output impedance for tube amps
  8. Problems with EM87 stereo level indicator for computer line out
  9. VR tube recommendation
  10. Mills MRA-5 resistors in tube circuits
  11. B&K Dyna-Quik 500 shows good tubes as Shorted
  12. Output transformers
  13. dbx 386 upgrade
  14. Sub 6n6p for 6n1p?
  15. SET Amp History in Japan
  16. Grid Bias or Cathode Bias
  17. Oscillating CJ PV-5
  18. FireFly Single Ended Tetrode
  19. Aikido front end for a SE 6C33S
  20. Ground Plane vs Star earth
  21. Circuit board with long post??
  22. ecc804 as Phase Splitter
  23. What can you do with a 3a5?
  24. Auto Wave soldering sockets
  25. Using diode for biasing
  26. No bass in 300b amp
  27. Tube socket and pin cleaning
  28. Help With Left Channel Hum
  29. Volume pot has rustling sound
  30. How best to distribute heater windings
  31. 30MB6 data
  32. Kofi Annan in: "Pushed and Pulled Back!"
  33. How dangerous is it to build an SET?
  34. 6as7 SE OTL
  35. Melody Roll
  36. 8417 Output Transformer
  37. Do you still need matched tubes if running a CCS ?
  38. Is a LM335 a direct replacement for a LM317T?
  39. Bias worry
  40. About the tube 6463
  41. awesome RCA MI 12158 tube amp project
  42. Crazy idea: Output tranny with constant magnetic gap?
  43. Most linear triode-strapped pentode
  44. Aikidio Phono Amp Questions
  45. Sample and Hold
  46. Big push-pull power for dummies
  47. Foxtrot Guitar Amp - Output transformer
  48. Taking my KT88 SE E-linear amp to the next level (long)
  49. Aikido Janus Shunt PSU
  50. 12b4a phase splitter! The best?
  51. Sansui 500EA vs. 500A
  52. Cascoded Ring of Two for Plate Load
  53. 6SL7 distortion
  54. My new PL36 Push-Pull amp
  55. adding line out to guitar tube preamp
  56. Thyratrons
  57. Tube ampl. for repair
  58. Date codes
  59. China Sountrack KT88 need shematic
  60. Anyone know anything about the Luxman A-2003 tube xover?
  61. Dynamic negative feedback?
  62. Need help with Ampeg J-20 crackling buzzing hissing noise issue/blocking distortion?
  63. New bie: some questions, want to start DIY pre amp
  64. Power Transformer issue
  65. Guess That Tube
  66. Poor soundstage with SET 300B
  67. Dedicated ESL amp -- please comment
  68. Buzzing AC relay coil
  69. Stereo amp parallel wired to mono - possible?
  70. Need biasing advice, cathode biased amp.
  71. Before I go ahead and build this...
  72. Beginner Tube Stereo
  73. 6AU6 and 6J5 for Guitar amp or pedal?
  74. Morgan Jones and the ECC88/6922/6DJ8
  75. Help with matching speaker impedance to old tube amp
  76. srpp 2a3 power supply
  77. 12AX7 Tube Question
  78. New problem with Music Angel KT88
  79. Need help changing 12V heater to 6V
  80. Phono cathode follower challenge!!
  81. 6au6 for stereo?
  82. determining input/output impedance
  83. "Singing" output transformers
  84. Sustitute 5842 for EC86
  85. Vege-toobz ;)
  86. precision electronics inc. tube guitar amplifier
  87. Bad channel in RCA Victor Console
  88. Did tone bypass on PAS what about caps
  89. Pe06/40n
  90. Anyone own an HH Scott LK-72 Integrated amp?
  91. HELP!! Howling K12G!!
  92. McIntosh MC60 Bias question
  93. Connecting a MF tube buffer directly to AKM DAC
  94. How to evaluate RF tubes for power and fidelity?
  95. Amity Amp Nutshell Audio
  96. 8086 Tubes?
  97. Lil' Devil P-P Amp
  98. 6SN7 vs. 6SL7 in Darling amp
  99. BBC AM8/6 mono tube amp schematic
  100. ST70 works with PAS but not another preamp
  101. Freds in 6X5 psu?
  102. Hi-End 50W Push-Amplifier inspired to AudioResearch
  103. Audioromy fu-29 - push pull!
  104. Help - MS-6V6 Yaqin schematic
  105. High Voltage Direct Drive amplifier for Plasma loudspeaker
  106. A Direct-Coupled Amplifier with Cathode Follower 6V6
  107. Separo- Full Pictorial Disclosure- opinions please
  108. Hammond Integrated Amp Kits 1950s
  109. LW6-180 schematic
  110. What to look for in a tube preamp?
  111. Russian-English Translation of 4P1L datasheet
  112. Can anybody identify this
  113. New York Audio Labs (NYAL) OTL1
  114. 5F6A via Mechanical Design
  115. New to tubes, need your advice.
  116. Brook 12a clone
  117. What type of audio transformers to use for tubes / valves
  118. need advice about building tube xover as a piece of art
  119. My first amp project, 6BQ5 (EL84) Single-End
  120. MA 6P1 6AQ5 Push-Pull Valve Tube Integrated Amplifier
  121. Stupid AB bias question
  122. Jamoke Direct to LPT/CCS PP EL34
  123. 4 x EL84 (6BQ5) in Push-Pull - Power Supply
  124. RFC: 300B driven by anode follower (6J5/6SN7)
  125. AVO VCM163 oddity
  126. Shuguang SG-50 ( RCA UX-250 replica) comments ???
  127. Schematic question (Trainwreck)
  128. Novel mode of lithium battery bias
  129. power supply problem in my dream amp...
  130. Understanding how to wire up an Output Transformer
  131. Tube sound without the tube! (almost)
  132. Replace Bypass Cap?
  133. Sales On Sound Vintage 40s Tube Amp Info
  134. Why am I blowing fuses when connecting to next component?
  135. New owner to an old Heathkit AA-121
  136. New amp just finished 6080 pp opt
  137. Aikido as DAC I/V?
  138. Have two 572B-162L USA mfg tubes for trade
  139. Potentiometer question
  140. DHT circuit development for noob:)
  141. modifying a schematic
  142. TV-4a/u Weston USM Tube Tester: got a manual or schematic?
  143. Any idea what the primary impedance of the X101-B OPT is?
  144. Transformer Ratings
  145. noisy Gain knob
  146. overcooling question
  147. Ecl82 PP amp rebuild - suggestions?
  148. GU-50 PP amp project - Any favs?
  149. External DC power supply?
  150. shielded wire
  151. Noise & attenuation
  152. Thinking of building the SV300B Push-Pull
  153. Transformers for Push-Pull sweep tubes
  154. 12BG3's
  155. Valve audio circuit design questions.
  156. jcm 800 preamp?
  157. srpp & distortion
  158. Common cathode circuit values
  159. Resilient Mounts - Materials Science help please
  160. Raytheon 6G-B6 information
  161. Output transformers
  162. Filament winding wire diameter
  163. EL34 for ST70
  164. Building a Tube PreAmp for Teddy
  165. series capacitor values..
  166. Music Angel KT88 correct circuit
  167. G1=G2/mu Scaled Drive Strawman Design
  168. Output transformer for 845 SE triode amp
  169. "10 year burn in" T Shirt arrives!!!
  170. Thinking out loud -- VT-33 headphone amp?
  171. Elektor USB magic eye
  172. Maganavox Tubes Made in USA?
  173. Magic Eye VU Meter
  174. More EBAY Madness !!
  175. Major modifications of a Bogen AP-35
  176. Help with circuitmaker Pentode model
  177. Kt-120 ?
  178. Help with 6F5/6L6 rebuild...
  179. What Speaker for Webcor Tube Amp?
  180. Possible use for Pentagrid tubes??
  181. Rogers Cadet III integrated
  182. Quad II - Can 6P3S-E/GU50 be used as KT66 direct replacement?
  183. Using Grid2 screen signal -
  184. 6n6p tube as output tube for small guitar amp
  185. YAAGLI - Yet Another Aikido Ground Loop Issue
  186. Tube rectifier question.
  187. Dac with tube preamp?
  188. 5712 tube data needed
  189. 180 pF capacitor and other questions
  190. Simple question: Stereo to monos. How.
  191. Plate dissipation specs for 21KQ6
  192. Yaqin pre-out for subwoofer?
  193. Grid Chokes and choke load
  194. First tube amp project: GO!
  195. Hybrid Amp
  196. Circuit weirdness?
  197. How suitable is this tranformer for a Tube Amp Project?
  198. Best way to solder gold-plated components?
  199. Phono EQ hiss/white noise!!!
  200. help needed with grounded grid CCS upgrade
  201. Resistor wattage?
  202. SCORE! Kepco Tube Power supplies!
  203. 6SN7-2A3 SE Amp - James Transformers
  204. Capacitor explosion.
  205. JJ ECC81/12AT7 Longevity
  206. 6V6GTA Tubes, H/K A300 Transformers, Now What?
  207. DIY valve radio
  208. U600 rectifier valve datasheet, please !!!
  209. Capacitors
  210. please help ! 5687 cd player buffer
  211. LK-72 mis-wired or am I confused?
  212. Need help with tube ID.
  213. spud amp 6c45pi vs 5842
  214. Air gapping transformers
  215. Voltage Measurement
  216. Cornell-Dubilier Caps Western Electric 91A Amplifier
  217. My take on a modern ST-70
  218. pls suggest a project
  219. Help with input stage driver for EL84 output stage
  220. Trying to make sense of the Sweet Peach
  221. Cornell-Dubilier Paper In Oil Capacitors
  222. lm3886 + cathode follower PS problem
  223. Completely differential amplifier final stage
  224. Capacitors in series for coupling?
  225. Help needed with messed-up-amp repairs.
  226. 6DJ8 tube schematic as balanced line stage?
  227. 6DJ8 (balanced) tube line stage
  228. Knight amp circut voltages
  229. Make Mono Phonograph into Mic Preamp?
  230. Yet another passive attenuator
  231. What tube is this?
  232. El Cheapo ok for a first build?
  233. Anyone in Vancouver with a tube tester?
  234. How long can I expect a tube to last
  235. Output transformers... which one...?
  236. My MA845 modded and questions
  237. Sun Audio SV-2a3 HK Clone
  238. departure and tube slop
  239. Wire construction for capped tube plates
  240. Grid resistor location
  241. Meng Yue X1 trial
  242. Yarland pro845
  243. Faulty 5881 tube ?
  244. MF Xpre - help pls!!
  245. Heaters Voltage
  246. Pleas help identify this McIntosh valve amplifier
  247. Curves for Triode Connected 6EW6
  248. microwave oven transformer..
  249. Marantz 8b tubes
  250. Request: The schematic of Audible illusions MODULUS 3

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