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  1. Output transformers
  2. dbx 386 upgrade
  3. Sub 6n6p for 6n1p?
  4. SET Amp History in Japan
  5. Grid Bias or Cathode Bias
  6. Oscillating CJ PV-5
  7. FireFly Single Ended Tetrode
  8. Aikido front end for a SE 6C33S
  9. Ground Plane vs Star earth
  10. Circuit board with long post??
  11. ecc804 as Phase Splitter
  12. What can you do with a 3a5?
  13. Auto Wave soldering sockets
  14. Using diode for biasing
  15. No bass in 300b amp
  16. Tube socket and pin cleaning
  17. Help With Left Channel Hum
  18. Volume pot has rustling sound
  19. How best to distribute heater windings
  20. 30MB6 data
  21. Kofi Annan in: "Pushed and Pulled Back!"
  22. How dangerous is it to build an SET?
  23. 6as7 SE OTL
  24. Melody Roll
  25. 8417 Output Transformer
  26. Do you still need matched tubes if running a CCS ?
  27. Is a LM335 a direct replacement for a LM317T?
  28. Bias worry
  29. About the tube 6463
  30. awesome RCA MI 12158 tube amp project
  31. Crazy idea: Output tranny with constant magnetic gap?
  32. Most linear triode-strapped pentode
  33. Aikidio Phono Amp Questions
  34. Sample and Hold
  35. Big push-pull power for dummies
  36. Foxtrot Guitar Amp - Output transformer
  37. Taking my KT88 SE E-linear amp to the next level (long)
  38. Aikido Janus Shunt PSU
  39. 12b4a phase splitter! The best?
  40. Sansui 500EA vs. 500A
  41. Cascoded Ring of Two for Plate Load
  42. 6SL7 distortion
  43. My new PL36 Push-Pull amp
  44. adding line out to guitar tube preamp
  45. Thyratrons
  46. Tube ampl. for repair
  47. Date codes
  48. China Sountrack KT88 need shematic
  49. Anyone know anything about the Luxman A-2003 tube xover?
  50. Dynamic negative feedback?
  51. Need help with Ampeg J-20 crackling buzzing hissing noise issue/blocking distortion?
  52. New bie: some questions, want to start DIY pre amp
  53. Power Transformer issue
  54. Guess That Tube
  55. Poor soundstage with SET 300B
  56. Dedicated ESL amp -- please comment
  57. Buzzing AC relay coil
  58. Stereo amp parallel wired to mono - possible?
  59. Need biasing advice, cathode biased amp.
  60. Before I go ahead and build this...
  61. Beginner Tube Stereo
  62. 6AU6 and 6J5 for Guitar amp or pedal?
  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. precision electronics inc. tube guitar amplifier
  76. Bad channel in RCA Victor Console
  77. Did tone bypass on PAS what about caps
  78. Pe06/40n
  79. Anyone own an HH Scott LK-72 Integrated amp?
  80. HELP!! Howling K12G!!
  81. McIntosh MC60 Bias question
  82. Connecting a MF tube buffer directly to AKM DAC
  83. How to evaluate RF tubes for power and fidelity?
  84. Amity Amp Nutshell Audio
  85. 8086 Tubes?
  86. Lil' Devil P-P Amp
  87. 6SN7 vs. 6SL7 in Darling amp
  88. BBC AM8/6 mono tube amp schematic
  89. ST70 works with PAS but not another preamp
  90. Freds in 6X5 psu?
  91. Hi-End 50W Push-Amplifier inspired to AudioResearch
  92. Audioromy fu-29 - push pull!
  93. Help - MS-6V6 Yaqin schematic
  94. High Voltage Direct Drive amplifier for Plasma loudspeaker
  95. A Direct-Coupled Amplifier with Cathode Follower 6V6
  96. Separo- Full Pictorial Disclosure- opinions please
  97. Hammond Integrated Amp Kits 1950s
  98. LW6-180 schematic
  99. What to look for in a tube preamp?
  100. Russian-English Translation of 4P1L datasheet
  101. Can anybody identify this
  102. New York Audio Labs (NYAL) OTL1
  103. 5F6A via Mechanical Design
  104. New to tubes, need your advice.
  105. Brook 12a clone
  106. What type of audio transformers to use for tubes / valves
  107. need advice about building tube xover as a piece of art
  108. My first amp project, 6BQ5 (EL84) Single-End
  109. MA 6P1 6AQ5 Push-Pull Valve Tube Integrated Amplifier
  110. Stupid AB bias question
  111. Jamoke Direct to LPT/CCS PP EL34
  112. 4 x EL84 (6BQ5) in Push-Pull - Power Supply
  113. RFC: 300B driven by anode follower (6J5/6SN7)
  114. AVO VCM163 oddity
  115. Shuguang SG-50 ( RCA UX-250 replica) comments ???
  116. Schematic question (Trainwreck)
  117. Novel mode of lithium battery bias
  118. power supply problem in my dream amp...
  119. Understanding how to wire up an Output Transformer
  120. Tube sound without the tube! (almost)
  121. Replace Bypass Cap?
  122. Sales On Sound Vintage 40s Tube Amp Info
  123. Why am I blowing fuses when connecting to next component?
  124. New owner to an old Heathkit AA-121
  125. New amp just finished 6080 pp opt
  126. Aikido as DAC I/V?
  127. Have two 572B-162L USA mfg tubes for trade
  128. Potentiometer question
  129. DHT circuit development for noob:)
  130. modifying a schematic
  131. TV-4a/u Weston USM Tube Tester: got a manual or schematic?
  132. Any idea what the primary impedance of the X101-B OPT is?
  133. Transformer Ratings
  134. noisy Gain knob
  135. overcooling question
  136. Ecl82 PP amp rebuild - suggestions?
  137. GU-50 PP amp project - Any favs?
  138. External DC power supply?
  139. shielded wire
  140. Noise & attenuation
  141. Thinking of building the SV300B Push-Pull
  142. Transformers for Push-Pull sweep tubes
  143. 12BG3's
  144. Valve audio circuit design questions.
  145. jcm 800 preamp?
  146. srpp & distortion
  147. Common cathode circuit values
  148. Resilient Mounts - Materials Science help please
  149. Raytheon 6G-B6 information
  150. Output transformers
  151. Filament winding wire diameter
  152. EL34 for ST70
  153. Building a Tube PreAmp for Teddy
  154. series capacitor values..
  155. Music Angel KT88 correct circuit
  156. G1=G2/mu Scaled Drive Strawman Design
  157. Output transformer for 845 SE triode amp
  158. "10 year burn in" T Shirt arrives!!!
  159. Thinking out loud -- VT-33 headphone amp?
  160. Elektor USB magic eye
  161. Maganavox Tubes Made in USA?
  162. Magic Eye VU Meter
  163. More EBAY Madness !!
  164. Major modifications of a Bogen AP-35
  165. Help with circuitmaker Pentode model
  166. Kt-120 ?
  167. Help with 6F5/6L6 rebuild...
  168. What Speaker for Webcor Tube Amp?
  169. Possible use for Pentagrid tubes??
  170. Rogers Cadet III integrated
  171. Quad II - Can 6P3S-E/GU50 be used as KT66 direct replacement?
  172. Using Grid2 screen signal -
  173. 6n6p tube as output tube for small guitar amp
  174. YAAGLI - Yet Another Aikido Ground Loop Issue
  175. Tube rectifier question.
  176. Dac with tube preamp?
  177. 5712 tube data needed
  178. 180 pF capacitor and other questions
  179. Simple question: Stereo to monos. How.
  180. Plate dissipation specs for 21KQ6
  181. Yaqin pre-out for subwoofer?
  182. Grid Chokes and choke load
  183. First tube amp project: GO!
  184. Hybrid Amp
  185. Circuit weirdness?
  186. How suitable is this tranformer for a Tube Amp Project?
  187. Best way to solder gold-plated components?
  188. Phono EQ hiss/white noise!!!
  189. help needed with grounded grid CCS upgrade
  190. Resistor wattage?
  191. SCORE! Kepco Tube Power supplies!
  192. 6SN7-2A3 SE Amp - James Transformers
  193. Capacitor explosion.
  194. JJ ECC81/12AT7 Longevity
  195. 6V6GTA Tubes, H/K A300 Transformers, Now What?
  196. DIY valve radio
  197. U600 rectifier valve datasheet, please !!!
  198. Capacitors
  199. please help ! 5687 cd player buffer
  200. LK-72 mis-wired or am I confused?
  201. Need help with tube ID.
  202. spud amp 6c45pi vs 5842
  203. Air gapping transformers
  204. Voltage Measurement
  205. Cornell-Dubilier Caps Western Electric 91A Amplifier
  206. My take on a modern ST-70
  207. pls suggest a project
  208. Help with input stage driver for EL84 output stage
  209. Trying to make sense of the Sweet Peach
  210. Cornell-Dubilier Paper In Oil Capacitors
  211. lm3886 + cathode follower PS problem
  212. Completely differential amplifier final stage
  213. Capacitors in series for coupling?
  214. Help needed with messed-up-amp repairs.
  215. 6DJ8 tube schematic as balanced line stage?
  216. 6DJ8 (balanced) tube line stage
  217. Knight amp circut voltages
  218. Make Mono Phonograph into Mic Preamp?
  219. Yet another passive attenuator
  220. What tube is this?
  221. El Cheapo ok for a first build?
  222. Anyone in Vancouver with a tube tester?
  223. How long can I expect a tube to last
  224. Output transformers... which one...?
  225. My MA845 modded and questions
  226. Sun Audio SV-2a3 HK Clone
  227. departure and tube slop
  228. Wire construction for capped tube plates
  229. Grid resistor location
  230. Meng Yue X1 trial
  231. Yarland pro845
  232. Faulty 5881 tube ?
  233. MF Xpre - help pls!!
  234. Heaters Voltage
  235. Pleas help identify this McIntosh valve amplifier
  236. Curves for Triode Connected 6EW6
  237. microwave oven transformer..
  238. Marantz 8b tubes
  239. Request: The schematic of Audible illusions MODULUS 3
  240. How many watts are really needed?
  241. Worn Tube Rectifier
  242. Bogen CHB35a Problem
  243. 29KQ6 Datasheet
  244. Help selecting a thermistor
  245. Beard P.101, new-to-me.
  246. Audioromy 838 Amp Broke need help..
  247. Inexpensive Guitar Amp
  248. How to Read faded Tube Numbers
  249. Test data for 6H30PI & Hickok 539??
  250. Tube Text books "Reich"

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