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  1. BBC AM8/6 mono tube amp schematic
  2. ST70 works with PAS but not another preamp
  3. Freds in 6X5 psu?
  4. Hi-End 50W Push-Amplifier inspired to AudioResearch
  5. Audioromy fu-29 - push pull!
  6. Help - MS-6V6 Yaqin schematic
  7. High Voltage Direct Drive amplifier for Plasma loudspeaker
  8. A Direct-Coupled Amplifier with Cathode Follower 6V6
  9. Separo- Full Pictorial Disclosure- opinions please
  10. Hammond Integrated Amp Kits 1950s
  11. LW6-180 schematic
  12. What to look for in a tube preamp?
  13. Russian-English Translation of 4P1L datasheet
  14. Can anybody identify this
  15. New York Audio Labs (NYAL) OTL1
  16. 5F6A via Mechanical Design
  17. New to tubes, need your advice.
  18. Brook 12a clone
  19. What type of audio transformers to use for tubes / valves
  20. need advice about building tube xover as a piece of art
  21. My first amp project, 6BQ5 (EL84) Single-End
  22. MA 6P1 6AQ5 Push-Pull Valve Tube Integrated Amplifier
  23. Stupid AB bias question
  24. Jamoke Direct to LPT/CCS PP EL34
  25. 4 x EL84 (6BQ5) in Push-Pull - Power Supply
  26. RFC: 300B driven by anode follower (6J5/6SN7)
  27. AVO VCM163 oddity
  28. Shuguang SG-50 ( RCA UX-250 replica) comments ???
  29. Schematic question (Trainwreck)
  30. Novel mode of lithium battery bias
  31. power supply problem in my dream amp...
  32. Understanding how to wire up an Output Transformer
  33. Tube sound without the tube! (almost)
  34. Replace Bypass Cap?
  35. Sales On Sound Vintage 40s Tube Amp Info
  36. Why am I blowing fuses when connecting to next component?
  37. New owner to an old Heathkit AA-121
  38. New amp just finished 6080 pp opt
  39. Aikido as DAC I/V?
  40. Have two 572B-162L USA mfg tubes for trade
  41. Potentiometer question
  42. DHT circuit development for noob:)
  43. modifying a schematic
  44. TV-4a/u Weston USM Tube Tester: got a manual or schematic?
  45. Any idea what the primary impedance of the X101-B OPT is?
  46. Transformer Ratings
  47. noisy Gain knob
  48. overcooling question
  49. Ecl82 PP amp rebuild - suggestions?
  50. GU-50 PP amp project - Any favs?
  51. External DC power supply?
  52. shielded wire
  53. Noise & attenuation
  54. Thinking of building the SV300B Push-Pull
  55. Transformers for Push-Pull sweep tubes
  56. 12BG3's
  57. Valve audio circuit design questions.
  58. jcm 800 preamp?
  59. srpp & distortion
  60. Common cathode circuit values
  61. Resilient Mounts - Materials Science help please
  62. Raytheon 6G-B6 information
  63. Output transformers
  64. Filament winding wire diameter
  65. EL34 for ST70
  66. Building a Tube PreAmp for Teddy
  67. series capacitor values..
  68. Music Angel KT88 correct circuit
  69. G1=G2/mu Scaled Drive Strawman Design
  70. Output transformer for 845 SE triode amp
  71. "10 year burn in" T Shirt arrives!!!
  72. Thinking out loud -- VT-33 headphone amp?
  73. Elektor USB magic eye
  74. Maganavox Tubes Made in USA?
  75. Magic Eye VU Meter
  76. More EBAY Madness !!
  77. Major modifications of a Bogen AP-35
  78. Help with circuitmaker Pentode model
  79. Kt-120 ?
  80. Help with 6F5/6L6 rebuild...
  81. What Speaker for Webcor Tube Amp?
  82. Possible use for Pentagrid tubes??
  83. Rogers Cadet III integrated
  84. Quad II - Can 6P3S-E/GU50 be used as KT66 direct replacement?
  85. Using Grid2 screen signal -
  86. 6n6p tube as output tube for small guitar amp
  87. YAAGLI - Yet Another Aikido Ground Loop Issue
  88. Tube rectifier question.
  89. Dac with tube preamp?
  90. 5712 tube data needed
  91. 180 pF capacitor and other questions
  92. Simple question: Stereo to monos. How.
  93. Plate dissipation specs for 21KQ6
  94. Yaqin pre-out for subwoofer?
  95. Grid Chokes and choke load
  96. First tube amp project: GO!
  97. Hybrid Amp
  98. Circuit weirdness?
  99. How suitable is this tranformer for a Tube Amp Project?
  100. Best way to solder gold-plated components?
  101. Phono EQ hiss/white noise!!!
  102. help needed with grounded grid CCS upgrade
  103. Resistor wattage?
  104. SCORE! Kepco Tube Power supplies!
  105. 6SN7-2A3 SE Amp - James Transformers
  106. Capacitor explosion.
  107. JJ ECC81/12AT7 Longevity
  108. 6V6GTA Tubes, H/K A300 Transformers, Now What?
  109. DIY valve radio
  110. U600 rectifier valve datasheet, please !!!
  111. Capacitors
  112. please help ! 5687 cd player buffer
  113. LK-72 mis-wired or am I confused?
  114. Need help with tube ID.
  115. spud amp 6c45pi vs 5842
  116. Air gapping transformers
  117. Voltage Measurement
  118. Cornell-Dubilier Caps Western Electric 91A Amplifier
  119. My take on a modern ST-70
  120. pls suggest a project
  121. Help with input stage driver for EL84 output stage
  122. Trying to make sense of the Sweet Peach
  123. Cornell-Dubilier Paper In Oil Capacitors
  124. lm3886 + cathode follower PS problem
  125. Completely differential amplifier final stage
  126. Capacitors in series for coupling?
  127. Help needed with messed-up-amp repairs.
  128. 6DJ8 tube schematic as balanced line stage?
  129. 6DJ8 (balanced) tube line stage
  130. Knight amp circut voltages
  131. Make Mono Phonograph into Mic Preamp?
  132. Yet another passive attenuator
  133. What tube is this?
  134. El Cheapo ok for a first build?
  135. Anyone in Vancouver with a tube tester?
  136. How long can I expect a tube to last
  137. Output transformers... which one...?
  138. My MA845 modded and questions
  139. Sun Audio SV-2a3 HK Clone
  140. departure and tube slop
  141. Wire construction for capped tube plates
  142. Grid resistor location
  143. Meng Yue X1 trial
  144. Yarland pro845
  145. Faulty 5881 tube ?
  146. MF Xpre - help pls!!
  147. Heaters Voltage
  148. Pleas help identify this McIntosh valve amplifier
  149. Curves for Triode Connected 6EW6
  150. microwave oven transformer..
  151. Marantz 8b tubes
  152. Request: The schematic of Audible illusions MODULUS 3
  153. How many watts are really needed?
  154. Worn Tube Rectifier
  155. Bogen CHB35a Problem
  156. 29KQ6 Datasheet
  157. Help selecting a thermistor
  158. Beard P.101, new-to-me.
  159. Audioromy 838 Amp Broke need help..
  160. Inexpensive Guitar Amp
  161. How to Read faded Tube Numbers
  162. Test data for 6H30PI & Hickok 539??
  163. Tube Text books "Reich"
  164. PCL805 parafeed SE idea + question
  165. 12V driver tubes for Engineer's Amp?
  166. >200W with 6BG6GA
  167. Leak stereo 20 modification
  168. Baby Huey components
  169. Monstrous 1kW amp!
  170. blue glow, how?
  171. Using different transformer taps for each needed B+
  172. Heating DHT Cathodes a new way???
  173. Noise problem in 572-10 PP amplifier
  174. Power transformer question (Bud?? calling Bud)
  175. Identifying 12AX7 Tubes
  176. PAS3 to volume pot
  177. 5F6A Amp build help (Fender Bassman)
  178. Jean Hiraga SE KT88
  179. ASC motor run caps....can they be mounted horizontal???
  180. Millivolt signal and tube sockets
  181. 6N1P Data sheet differences
  182. Confident in buying tubes on ebay ?
  183. CCS Troubles
  184. Mengyue el34b schematic needed
  185. safest way to power up a new build
  186. Phono amp Raytheon 6418 tubes
  187. YL1350 Help characteristic and output tranies
  188. EL84 PP using 5K plate to plate primate OPT
  189. VR tube flashing?
  190. Tabletop 12au7 Amp
  191. Renovated website: www.pmillett.com, www.tubebooks.org
  192. Troubleshooting Eico HF-85
  193. Custom chassis europe
  194. Mixer from pre-amp design
  195. SE Output Tranny - Dumb Question
  196. What Tube for a Differential Amplifier?
  197. Thinking of buying a Lumley Reference ST70 with attached passive pre
  198. Psu
  199. Protection of the Irreplaceable
  200. Trix T621 PA amplifier (British)
  201. Resistor types ??? (carbon or metal film)
  202. First Amp Build
  203. Help ID these little PP output xfrmrs?
  204. Rectifier voltage drop question
  205. dc and ac heater supply in Aikido
  206. Can I obtain a suitable B+ voltage with spare parts?
  207. Multi tap transformers dont use the whole windings?
  208. First layout with spud
  209. EL152, GU50 and EL156
  210. Convert a 110 volt Mcintosh Mc275 to 230volt
  211. transformer maker list
  212. design a preamp, so easy....
  213. SRPP - determining load and balancing
  214. Idea for all C3g phono stage
  215. temp check
  216. Pentode Question
  217. K & K Audio Transformer phase splitter?
  218. Transformer Efficiency
  219. How to test a 6H30 tube
  220. Karaoke Tube Hi-end In The Future
  221. What makes the old McIntosh stuff so good?
  222. Paralell 10M45's for 71A DHT filament?
  223. Rod Coleman CCS/gyrator help
  224. Differential amp.Do they pass 2nd harmonics or reject them?
  225. A half 6sl7 tube
  226. failing tube
  227. Capacitor in series - Resistor across ?
  228. Tube preamp choise...
  229. Some general tube questions from a Tube newbie !!
  230. How unsafe is an Autotransformer?
  231. Can a dual triode use a common cathode resistor?
  232. Dared MC-7P
  233. SRC2496 Miniatube tube output stage
  234. Tubetech smc2b multiband compressor
  235. Tweaking/correction question - Xindak MT-1 balance
  236. HELP! ELNA CERAFINE 500V Caps
  237. Em87/ em84
  238. Pioneer SM-83 restoration
  239. Best GM70 version suited for audio??
  240. PSUDII transformer question
  241. what are these caps doing?
  242. Distortion VS OPT impedence
  243. Heater wiring approaches
  244. Rogers pops, crackle and static are driving me mad!
  245. tube power enough?
  246. Ever notice those scratches on some plates??
  247. JE 45/2A3 SE 2001 edition
  248. Difficult Time Finding Replacement Caps
  249. Mini tube output stage
  250. Mismatched Power Tubes

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