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  1. Is a LM335 a direct replacement for a LM317T?
  2. Bias worry
  3. About the tube 6463
  4. awesome RCA MI 12158 tube amp project
  5. Crazy idea: Output tranny with constant magnetic gap?
  6. Most linear triode-strapped pentode
  7. Aikidio Phono Amp Questions
  8. Sample and Hold
  9. Big push-pull power for dummies
  10. Foxtrot Guitar Amp - Output transformer
  11. Taking my KT88 SE E-linear amp to the next level (long)
  12. Aikido Janus Shunt PSU
  13. 12b4a phase splitter! The best?
  14. Sansui 500EA vs. 500A
  15. Cascoded Ring of Two for Plate Load
  16. 6SL7 distortion
  17. My new PL36 Push-Pull amp
  18. adding line out to guitar tube preamp
  19. Thyratrons
  20. Tube ampl. for repair
  21. Date codes
  22. China Sountrack KT88 need shematic
  23. Anyone know anything about the Luxman A-2003 tube xover?
  24. Dynamic negative feedback?
  25. Need help with Ampeg J-20 crackling buzzing hissing noise issue/blocking distortion?
  26. New bie: some questions, want to start DIY pre amp
  27. Power Transformer issue
  28. Guess That Tube
  29. Poor soundstage with SET 300B
  30. Dedicated ESL amp -- please comment
  31. Buzzing AC relay coil
  32. Stereo amp parallel wired to mono - possible?
  33. Need biasing advice, cathode biased amp.
  34. Before I go ahead and build this...
  35. Beginner Tube Stereo
  36. 6AU6 and 6J5 for Guitar amp or pedal?
  37. Morgan Jones and the ECC88/6922/6DJ8
  38. Help with matching speaker impedance to old tube amp
  39. srpp 2a3 power supply
  40. 12AX7 Tube Question
  41. New problem with Music Angel KT88
  42. Need help changing 12V heater to 6V
  43. Phono cathode follower challenge!!
  44. 6au6 for stereo?
  45. determining input/output impedance
  46. "Singing" output transformers
  47. Sustitute 5842 for EC86
  48. Vege-toobz ;)
  49. precision electronics inc. tube guitar amplifier
  50. Bad channel in RCA Victor Console
  51. Did tone bypass on PAS what about caps
  52. Pe06/40n
  53. Anyone own an HH Scott LK-72 Integrated amp?
  54. HELP!! Howling K12G!!
  55. McIntosh MC60 Bias question
  56. Connecting a MF tube buffer directly to AKM DAC
  57. How to evaluate RF tubes for power and fidelity?
  58. Amity Amp Nutshell Audio
  59. 8086 Tubes?
  60. Lil' Devil P-P Amp
  61. 6SN7 vs. 6SL7 in Darling amp
  62. BBC AM8/6 mono tube amp schematic
  63. ST70 works with PAS but not another preamp
  64. Freds in 6X5 psu?
  65. Hi-End 50W Push-Amplifier inspired to AudioResearch
  66. Audioromy fu-29 - push pull!
  67. Help - MS-6V6 Yaqin schematic
  68. High Voltage Direct Drive amplifier for Plasma loudspeaker
  69. A Direct-Coupled Amplifier with Cathode Follower 6V6
  70. Separo- Full Pictorial Disclosure- opinions please
  71. Hammond Integrated Amp Kits 1950s
  72. LW6-180 schematic
  73. What to look for in a tube preamp?
  74. Russian-English Translation of 4P1L datasheet
  75. Can anybody identify this
  76. New York Audio Labs (NYAL) OTL1
  77. 5F6A via Mechanical Design
  78. New to tubes, need your advice.
  79. Brook 12a clone
  80. What type of audio transformers to use for tubes / valves
  81. need advice about building tube xover as a piece of art
  82. My first amp project, 6BQ5 (EL84) Single-End
  83. MA 6P1 6AQ5 Push-Pull Valve Tube Integrated Amplifier
  84. Stupid AB bias question
  85. Jamoke Direct to LPT/CCS PP EL34
  86. 4 x EL84 (6BQ5) in Push-Pull - Power Supply
  87. RFC: 300B driven by anode follower (6J5/6SN7)
  88. AVO VCM163 oddity
  89. Shuguang SG-50 ( RCA UX-250 replica) comments ???
  90. Schematic question (Trainwreck)
  91. Novel mode of lithium battery bias
  92. power supply problem in my dream amp...
  93. Understanding how to wire up an Output Transformer
  94. Tube sound without the tube! (almost)
  95. Replace Bypass Cap?
  96. Sales On Sound Vintage 40s Tube Amp Info
  97. Why am I blowing fuses when connecting to next component?
  98. New owner to an old Heathkit AA-121
  99. New amp just finished 6080 pp opt
  100. Aikido as DAC I/V?
  101. Have two 572B-162L USA mfg tubes for trade
  102. Potentiometer question
  103. DHT circuit development for noob:)
  104. modifying a schematic
  105. TV-4a/u Weston USM Tube Tester: got a manual or schematic?
  106. Any idea what the primary impedance of the X101-B OPT is?
  107. Transformer Ratings
  108. noisy Gain knob
  109. overcooling question
  110. Ecl82 PP amp rebuild - suggestions?
  111. GU-50 PP amp project - Any favs?
  112. External DC power supply?
  113. shielded wire
  114. Noise & attenuation
  115. Thinking of building the SV300B Push-Pull
  116. Transformers for Push-Pull sweep tubes
  117. 12BG3's
  118. Valve audio circuit design questions.
  119. jcm 800 preamp?
  120. srpp & distortion
  121. Common cathode circuit values
  122. Resilient Mounts - Materials Science help please
  123. Raytheon 6G-B6 information
  124. Output transformers
  125. Filament winding wire diameter
  126. EL34 for ST70
  127. Building a Tube PreAmp for Teddy
  128. series capacitor values..
  129. Music Angel KT88 correct circuit
  130. G1=G2/mu Scaled Drive Strawman Design
  131. Output transformer for 845 SE triode amp
  132. "10 year burn in" T Shirt arrives!!!
  133. Thinking out loud -- VT-33 headphone amp?
  134. Elektor USB magic eye
  135. Maganavox Tubes Made in USA?
  136. Magic Eye VU Meter
  137. More EBAY Madness !!
  138. Major modifications of a Bogen AP-35
  139. Help with circuitmaker Pentode model
  140. Kt-120 ?
  141. Help with 6F5/6L6 rebuild...
  142. What Speaker for Webcor Tube Amp?
  143. Possible use for Pentagrid tubes??
  144. Rogers Cadet III integrated
  145. Quad II - Can 6P3S-E/GU50 be used as KT66 direct replacement?
  146. Using Grid2 screen signal -
  147. 6n6p tube as output tube for small guitar amp
  148. YAAGLI - Yet Another Aikido Ground Loop Issue
  149. Tube rectifier question.
  150. Dac with tube preamp?
  151. 5712 tube data needed
  152. 180 pF capacitor and other questions
  153. Simple question: Stereo to monos. How.
  154. Plate dissipation specs for 21KQ6
  155. Yaqin pre-out for subwoofer?
  156. Grid Chokes and choke load
  157. First tube amp project: GO!
  158. Hybrid Amp
  159. Circuit weirdness?
  160. How suitable is this tranformer for a Tube Amp Project?
  161. Best way to solder gold-plated components?
  162. Phono EQ hiss/white noise!!!
  163. help needed with grounded grid CCS upgrade
  164. Resistor wattage?
  165. SCORE! Kepco Tube Power supplies!
  166. 6SN7-2A3 SE Amp - James Transformers
  167. Capacitor explosion.
  168. JJ ECC81/12AT7 Longevity
  169. 6V6GTA Tubes, H/K A300 Transformers, Now What?
  170. DIY valve radio
  171. U600 rectifier valve datasheet, please !!!
  172. Capacitors
  173. please help ! 5687 cd player buffer
  174. LK-72 mis-wired or am I confused?
  175. Need help with tube ID.
  176. spud amp 6c45pi vs 5842
  177. Air gapping transformers
  178. Voltage Measurement
  179. Cornell-Dubilier Caps Western Electric 91A Amplifier
  180. My take on a modern ST-70
  181. pls suggest a project
  182. Help with input stage driver for EL84 output stage
  183. Trying to make sense of the Sweet Peach
  184. Cornell-Dubilier Paper In Oil Capacitors
  185. lm3886 + cathode follower PS problem
  186. Completely differential amplifier final stage
  187. Capacitors in series for coupling?
  188. Help needed with messed-up-amp repairs.
  189. 6DJ8 tube schematic as balanced line stage?
  190. 6DJ8 (balanced) tube line stage
  191. Knight amp circut voltages
  192. Make Mono Phonograph into Mic Preamp?
  193. Yet another passive attenuator
  194. What tube is this?
  195. El Cheapo ok for a first build?
  196. Anyone in Vancouver with a tube tester?
  197. How long can I expect a tube to last
  198. Output transformers... which one...?
  199. My MA845 modded and questions
  200. Sun Audio SV-2a3 HK Clone
  201. departure and tube slop
  202. Wire construction for capped tube plates
  203. Grid resistor location
  204. Meng Yue X1 trial
  205. Yarland pro845
  206. Faulty 5881 tube ?
  207. MF Xpre - help pls!!
  208. Heaters Voltage
  209. Pleas help identify this McIntosh valve amplifier
  210. Curves for Triode Connected 6EW6
  211. microwave oven transformer..
  212. Marantz 8b tubes
  213. Request: The schematic of Audible illusions MODULUS 3
  214. How many watts are really needed?
  215. Worn Tube Rectifier
  216. Bogen CHB35a Problem
  217. 29KQ6 Datasheet
  218. Help selecting a thermistor
  219. Beard P.101, new-to-me.
  220. Audioromy 838 Amp Broke need help..
  221. Inexpensive Guitar Amp
  222. How to Read faded Tube Numbers
  223. Test data for 6H30PI & Hickok 539??
  224. Tube Text books "Reich"
  225. PCL805 parafeed SE idea + question
  226. 12V driver tubes for Engineer's Amp?
  227. >200W with 6BG6GA
  228. Leak stereo 20 modification
  229. Baby Huey components
  230. Monstrous 1kW amp!
  231. blue glow, how?
  232. Using different transformer taps for each needed B+
  233. Heating DHT Cathodes a new way???
  234. Noise problem in 572-10 PP amplifier
  235. Power transformer question (Bud?? calling Bud)
  236. Identifying 12AX7 Tubes
  237. PAS3 to volume pot
  238. 5F6A Amp build help (Fender Bassman)
  239. Jean Hiraga SE KT88
  240. ASC motor run caps....can they be mounted horizontal???
  241. Millivolt signal and tube sockets
  242. 6N1P Data sheet differences
  243. Confident in buying tubes on ebay ?
  244. CCS Troubles
  245. Mengyue el34b schematic needed
  246. safest way to power up a new build
  247. Phono amp Raytheon 6418 tubes
  248. YL1350 Help characteristic and output tranies
  249. EL84 PP using 5K plate to plate primate OPT
  250. VR tube flashing?

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