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  1. Grid Bias or Cathode Bias
  2. Oscillating CJ PV-5
  3. FireFly Single Ended Tetrode
  4. Aikido front end for a SE 6C33S
  5. Ground Plane vs Star earth
  6. Circuit board with long post??
  7. ecc804 as Phase Splitter
  8. What can you do with a 3a5?
  9. Auto Wave soldering sockets
  10. Using diode for biasing
  11. No bass in 300b amp
  12. Tube socket and pin cleaning
  13. Help With Left Channel Hum
  14. Volume pot has rustling sound
  15. How best to distribute heater windings
  16. 30MB6 data
  17. Kofi Annan in: "Pushed and Pulled Back!"
  18. How dangerous is it to build an SET?
  19. 6as7 SE OTL
  20. Melody Roll
  21. 8417 Output Transformer
  22. Do you still need matched tubes if running a CCS ?
  23. Is a LM335 a direct replacement for a LM317T?
  24. Bias worry
  25. About the tube 6463
  26. awesome RCA MI 12158 tube amp project
  27. Crazy idea: Output tranny with constant magnetic gap?
  28. Most linear triode-strapped pentode
  29. Aikidio Phono Amp Questions
  30. Sample and Hold
  31. Big push-pull power for dummies
  32. Taking my KT88 SE E-linear amp to the next level (long)
  33. Aikido Janus Shunt PSU
  34. 12b4a phase splitter! The best?
  35. Sansui 500EA vs. 500A
  36. Cascoded Ring of Two for Plate Load
  37. 6SL7 distortion
  38. My new PL36 Push-Pull amp
  39. Thyratrons
  40. Tube ampl. for repair
  41. Date codes
  42. China Sountrack KT88 need shematic
  43. Anyone know anything about the Luxman A-2003 tube xover?
  44. Dynamic negative feedback?
  45. New bie: some questions, want to start DIY pre amp
  46. Power Transformer issue
  47. Guess That Tube
  48. Poor soundstage with SET 300B
  49. Dedicated ESL amp -- please comment
  50. Buzzing AC relay coil
  51. Stereo amp parallel wired to mono - possible?
  52. Need biasing advice, cathode biased amp.
  53. Before I go ahead and build this...
  54. Beginner Tube Stereo
  55. Morgan Jones and the ECC88/6922/6DJ8
  56. Help with matching speaker impedance to old tube amp
  57. srpp 2a3 power supply
  58. 12AX7 Tube Question
  59. New problem with Music Angel KT88
  60. Need help changing 12V heater to 6V
  61. Phono cathode follower challenge!!
  62. 6au6 for stereo?
  63. determining input/output impedance
  64. "Singing" output transformers
  65. Sustitute 5842 for EC86
  66. Vege-toobz ;)
  67. Bad channel in RCA Victor Console
  68. Did tone bypass on PAS what about caps
  69. Pe06/40n
  70. Anyone own an HH Scott LK-72 Integrated amp?
  71. HELP!! Howling K12G!!
  72. McIntosh MC60 Bias question
  73. Connecting a MF tube buffer directly to AKM DAC
  74. How to evaluate RF tubes for power and fidelity?
  75. Amity Amp Nutshell Audio
  76. 8086 Tubes?
  77. Lil' Devil P-P Amp
  78. 6SN7 vs. 6SL7 in Darling amp
  79. BBC AM8/6 mono tube amp schematic
  80. ST70 works with PAS but not another preamp
  81. Freds in 6X5 psu?
  82. Hi-End 50W Push-Amplifier inspired to AudioResearch
  83. Audioromy fu-29 - push pull!
  84. Help - MS-6V6 Yaqin schematic
  85. High Voltage Direct Drive amplifier for Plasma loudspeaker
  86. A Direct-Coupled Amplifier with Cathode Follower 6V6
  87. Separo- Full Pictorial Disclosure- opinions please
  88. Hammond Integrated Amp Kits 1950s
  89. LW6-180 schematic
  90. What to look for in a tube preamp?
  91. Russian-English Translation of 4P1L datasheet
  92. Can anybody identify this
  93. New York Audio Labs (NYAL) OTL1
  94. 5F6A via Mechanical Design
  95. New to tubes, need your advice.
  96. Brook 12a clone
  97. What type of audio transformers to use for tubes / valves
  98. need advice about building tube xover as a piece of art
  99. My first amp project, 6BQ5 (EL84) Single-End
  100. MA 6P1 6AQ5 Push-Pull Valve Tube Integrated Amplifier
  101. Stupid AB bias question
  102. Jamoke Direct to LPT/CCS PP EL34
  103. 4 x EL84 (6BQ5) in Push-Pull - Power Supply
  104. RFC: 300B driven by anode follower (6J5/6SN7)
  105. AVO VCM163 oddity
  106. Shuguang SG-50 ( RCA UX-250 replica) comments ???
  107. Novel mode of lithium battery bias
  108. power supply problem in my dream amp...
  109. Understanding how to wire up an Output Transformer
  110. Tube sound without the tube! (almost)
  111. Replace Bypass Cap?
  112. Sales On Sound Vintage 40s Tube Amp Info
  113. Why am I blowing fuses when connecting to next component?
  114. New owner to an old Heathkit AA-121
  115. New amp just finished 6080 pp opt
  116. Aikido as DAC I/V?
  117. Have two 572B-162L USA mfg tubes for trade
  118. Potentiometer question
  119. DHT circuit development for noob:)
  120. modifying a schematic
  121. TV-4a/u Weston USM Tube Tester: got a manual or schematic?
  122. Any idea what the primary impedance of the X101-B OPT is?
  123. Transformer Ratings
  124. noisy Gain knob
  125. overcooling question
  126. Ecl82 PP amp rebuild - suggestions?
  127. GU-50 PP amp project - Any favs?
  128. External DC power supply?
  129. shielded wire
  130. Noise & attenuation
  131. Thinking of building the SV300B Push-Pull
  132. Transformers for Push-Pull sweep tubes
  133. 12BG3's
  134. Valve audio circuit design questions.
  135. srpp & distortion
  136. Common cathode circuit values
  137. Resilient Mounts - Materials Science help please
  138. Raytheon 6G-B6 information
  139. Output transformers
  140. Filament winding wire diameter
  141. EL34 for ST70
  142. Building a Tube PreAmp for Teddy
  143. series capacitor values..
  144. Music Angel KT88 correct circuit
  145. G1=G2/mu Scaled Drive Strawman Design
  146. Output transformer for 845 SE triode amp
  147. "10 year burn in" T Shirt arrives!!!
  148. Thinking out loud -- VT-33 headphone amp?
  149. Elektor USB magic eye
  150. Maganavox Tubes Made in USA?
  151. Magic Eye VU Meter
  152. More EBAY Madness !!
  153. Major modifications of a Bogen AP-35
  154. Help with circuitmaker Pentode model
  155. Kt-120 ?
  156. Help with 6F5/6L6 rebuild...
  157. What Speaker for Webcor Tube Amp?
  158. Possible use for Pentagrid tubes??
  159. Rogers Cadet III integrated
  160. Quad II - Can 6P3S-E/GU50 be used as KT66 direct replacement?
  161. Using Grid2 screen signal -
  162. YAAGLI - Yet Another Aikido Ground Loop Issue
  163. Tube rectifier question.
  164. Dac with tube preamp?
  165. 5712 tube data needed
  166. 180 pF capacitor and other questions
  167. Simple question: Stereo to monos. How.
  168. Plate dissipation specs for 21KQ6
  169. Yaqin pre-out for subwoofer?
  170. Grid Chokes and choke load
  171. First tube amp project: GO!
  172. Hybrid Amp
  173. Circuit weirdness?
  174. How suitable is this tranformer for a Tube Amp Project?
  175. Best way to solder gold-plated components?
  176. Phono EQ hiss/white noise!!!
  177. help needed with grounded grid CCS upgrade
  178. SCORE! Kepco Tube Power supplies!
  179. 6SN7-2A3 SE Amp - James Transformers
  180. JJ ECC81/12AT7 Longevity
  181. 6V6GTA Tubes, H/K A300 Transformers, Now What?
  182. DIY valve radio
  183. U600 rectifier valve datasheet, please !!!
  184. Capacitors
  185. please help ! 5687 cd player buffer
  186. LK-72 mis-wired or am I confused?
  187. Need help with tube ID.
  188. spud amp 6c45pi vs 5842
  189. Air gapping transformers
  190. Voltage Measurement
  191. My take on a modern ST-70
  192. pls suggest a project
  193. Help with input stage driver for EL84 output stage
  194. Trying to make sense of the Sweet Peach
  195. Cornell-Dubilier Paper In Oil Capacitors
  196. lm3886 + cathode follower PS problem
  197. Completely differential amplifier final stage
  198. Capacitors in series for coupling?
  199. Help needed with messed-up-amp repairs.
  200. 6DJ8 tube schematic as balanced line stage?
  201. 6DJ8 (balanced) tube line stage
  202. Knight amp circut voltages
  203. Yet another passive attenuator
  204. What tube is this?
  205. El Cheapo ok for a first build?
  206. Anyone in Vancouver with a tube tester?
  207. How long can I expect a tube to last
  208. Output transformers... which one...?
  209. My MA845 modded and questions
  210. Sun Audio SV-2a3 HK Clone
  211. departure and tube slop
  212. Wire construction for capped tube plates
  213. Grid resistor location
  214. Meng Yue X1 trial
  215. Yarland pro845
  216. Faulty 5881 tube ?
  217. MF Xpre - help pls!!
  218. Heaters Voltage
  219. Pleas help identify this McIntosh valve amplifier
  220. Curves for Triode Connected 6EW6
  221. microwave oven transformer..
  222. Marantz 8b tubes
  223. Request: The schematic of Audible illusions MODULUS 3
  224. How many watts are really needed?
  225. Worn Tube Rectifier
  226. Bogen CHB35a Problem
  227. 29KQ6 Datasheet
  228. Help selecting a thermistor
  229. Beard P.101, new-to-me.
  230. Audioromy 838 Amp Broke need help..
  231. How to Read faded Tube Numbers
  232. Test data for 6H30PI & Hickok 539??
  233. Tube Text books "Reich"
  234. PCL805 parafeed SE idea + question
  235. 12V driver tubes for Engineer's Amp?
  236. >200W with 6BG6GA
  237. Leak stereo 20 modification
  238. Baby Huey components
  239. Monstrous 1kW amp!
  240. blue glow, how?
  241. Using different transformer taps for each needed B+
  242. Heating DHT Cathodes a new way???
  243. Noise problem in 572-10 PP amplifier
  244. Power transformer question (Bud?? calling Bud)
  245. Identifying 12AX7 Tubes
  246. PAS3 to volume pot
  247. Jean Hiraga SE KT88
  248. Millivolt signal and tube sockets
  249. 6N1P Data sheet differences
  250. Confident in buying tubes on ebay ?

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