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  1. Beginner Tube Stereo
  2. 6AU6 and 6J5 for Guitar amp or pedal?
  3. Morgan Jones and the ECC88/6922/6DJ8
  4. Help with matching speaker impedance to old tube amp
  5. srpp 2a3 power supply
  6. 12AX7 Tube Question
  7. New problem with Music Angel KT88
  8. Need help changing 12V heater to 6V
  9. Phono cathode follower challenge!!
  10. 6au6 for stereo?
  11. determining input/output impedance
  12. "Singing" output transformers
  13. Sustitute 5842 for EC86
  14. Vege-toobz ;)
  15. precision electronics inc. tube guitar amplifier
  16. Bad channel in RCA Victor Console
  17. Did tone bypass on PAS what about caps
  18. Pe06/40n
  19. Anyone own an HH Scott LK-72 Integrated amp?
  20. HELP!! Howling K12G!!
  21. McIntosh MC60 Bias question
  22. Connecting a MF tube buffer directly to AKM DAC
  23. How to evaluate RF tubes for power and fidelity?
  24. Amity Amp Nutshell Audio
  25. 8086 Tubes?
  26. Lil' Devil P-P Amp
  27. 6SN7 vs. 6SL7 in Darling amp
  28. BBC AM8/6 mono tube amp schematic
  29. ST70 works with PAS but not another preamp
  30. Freds in 6X5 psu?
  31. Hi-End 50W Push-Amplifier inspired to AudioResearch
  32. Audioromy fu-29 - push pull!
  33. Help - MS-6V6 Yaqin schematic
  34. High Voltage Direct Drive amplifier for Plasma loudspeaker
  35. A Direct-Coupled Amplifier with Cathode Follower 6V6
  36. Separo- Full Pictorial Disclosure- opinions please
  37. Hammond Integrated Amp Kits 1950s
  38. LW6-180 schematic
  39. What to look for in a tube preamp?
  40. Russian-English Translation of 4P1L datasheet
  41. Can anybody identify this
  42. New York Audio Labs (NYAL) OTL1
  43. 5F6A via Mechanical Design
  44. New to tubes, need your advice.
  45. Brook 12a clone
  46. What type of audio transformers to use for tubes / valves
  47. need advice about building tube xover as a piece of art
  48. My first amp project, 6BQ5 (EL84) Single-End
  49. MA 6P1 6AQ5 Push-Pull Valve Tube Integrated Amplifier
  50. Stupid AB bias question
  51. Jamoke Direct to LPT/CCS PP EL34
  52. 4 x EL84 (6BQ5) in Push-Pull - Power Supply
  53. RFC: 300B driven by anode follower (6J5/6SN7)
  54. AVO VCM163 oddity
  55. Shuguang SG-50 ( RCA UX-250 replica) comments ???
  56. Schematic question (Trainwreck)
  57. Novel mode of lithium battery bias
  58. power supply problem in my dream amp...
  59. Understanding how to wire up an Output Transformer
  60. Tube sound without the tube! (almost)
  61. Replace Bypass Cap?
  62. Sales On Sound Vintage 40s Tube Amp Info
  63. Why am I blowing fuses when connecting to next component?
  64. New owner to an old Heathkit AA-121
  65. New amp just finished 6080 pp opt
  66. Aikido as DAC I/V?
  67. Have two 572B-162L USA mfg tubes for trade
  68. Potentiometer question
  69. DHT circuit development for noob:)
  70. modifying a schematic
  71. TV-4a/u Weston USM Tube Tester: got a manual or schematic?
  72. Any idea what the primary impedance of the X101-B OPT is?
  73. Transformer Ratings
  74. noisy Gain knob
  75. overcooling question
  76. Ecl82 PP amp rebuild - suggestions?
  77. GU-50 PP amp project - Any favs?
  78. External DC power supply?
  79. shielded wire
  80. Noise & attenuation
  81. Thinking of building the SV300B Push-Pull
  82. Transformers for Push-Pull sweep tubes
  83. 12BG3's
  84. Valve audio circuit design questions.
  85. jcm 800 preamp?
  86. srpp & distortion
  87. Common cathode circuit values
  88. Resilient Mounts - Materials Science help please
  89. Raytheon 6G-B6 information
  90. Output transformers
  91. Filament winding wire diameter
  92. EL34 for ST70
  93. Building a Tube PreAmp for Teddy
  94. series capacitor values..
  95. Music Angel KT88 correct circuit
  96. G1=G2/mu Scaled Drive Strawman Design
  97. Output transformer for 845 SE triode amp
  98. "10 year burn in" T Shirt arrives!!!
  99. Thinking out loud -- VT-33 headphone amp?
  100. Elektor USB magic eye
  101. Maganavox Tubes Made in USA?
  102. Magic Eye VU Meter
  103. More EBAY Madness !!
  104. Major modifications of a Bogen AP-35
  105. Help with circuitmaker Pentode model
  106. Kt-120 ?
  107. Help with 6F5/6L6 rebuild...
  108. What Speaker for Webcor Tube Amp?
  109. Possible use for Pentagrid tubes??
  110. Rogers Cadet III integrated
  111. Quad II - Can 6P3S-E/GU50 be used as KT66 direct replacement?
  112. Using Grid2 screen signal -
  113. 6n6p tube as output tube for small guitar amp
  114. YAAGLI - Yet Another Aikido Ground Loop Issue
  115. Tube rectifier question.
  116. Dac with tube preamp?
  117. 5712 tube data needed
  118. 180 pF capacitor and other questions
  119. Simple question: Stereo to monos. How.
  120. Plate dissipation specs for 21KQ6
  121. Yaqin pre-out for subwoofer?
  122. Grid Chokes and choke load
  123. First tube amp project: GO!
  124. Hybrid Amp
  125. Circuit weirdness?
  126. How suitable is this tranformer for a Tube Amp Project?
  127. Best way to solder gold-plated components?
  128. Phono EQ hiss/white noise!!!
  129. help needed with grounded grid CCS upgrade
  130. Resistor wattage?
  131. SCORE! Kepco Tube Power supplies!
  132. 6SN7-2A3 SE Amp - James Transformers
  133. Capacitor explosion.
  134. JJ ECC81/12AT7 Longevity
  135. 6V6GTA Tubes, H/K A300 Transformers, Now What?
  136. DIY valve radio
  137. U600 rectifier valve datasheet, please !!!
  138. Capacitors
  139. please help ! 5687 cd player buffer
  140. LK-72 mis-wired or am I confused?
  141. Need help with tube ID.
  142. spud amp 6c45pi vs 5842
  143. Air gapping transformers
  144. Voltage Measurement
  145. Cornell-Dubilier Caps Western Electric 91A Amplifier
  146. My take on a modern ST-70
  147. pls suggest a project
  148. Help with input stage driver for EL84 output stage
  149. Trying to make sense of the Sweet Peach
  150. Cornell-Dubilier Paper In Oil Capacitors
  151. lm3886 + cathode follower PS problem
  152. Completely differential amplifier final stage
  153. Capacitors in series for coupling?
  154. Help needed with messed-up-amp repairs.
  155. 6DJ8 tube schematic as balanced line stage?
  156. 6DJ8 (balanced) tube line stage
  157. Knight amp circut voltages
  158. Make Mono Phonograph into Mic Preamp?
  159. Yet another passive attenuator
  160. What tube is this?
  161. El Cheapo ok for a first build?
  162. Anyone in Vancouver with a tube tester?
  163. How long can I expect a tube to last
  164. Output transformers... which one...?
  165. My MA845 modded and questions
  166. Sun Audio SV-2a3 HK Clone
  167. departure and tube slop
  168. Wire construction for capped tube plates
  169. Grid resistor location
  170. Meng Yue X1 trial
  171. Yarland pro845
  172. Faulty 5881 tube ?
  173. MF Xpre - help pls!!
  174. Heaters Voltage
  175. Pleas help identify this McIntosh valve amplifier
  176. Curves for Triode Connected 6EW6
  177. microwave oven transformer..
  178. Marantz 8b tubes
  179. Request: The schematic of Audible illusions MODULUS 3
  180. How many watts are really needed?
  181. Worn Tube Rectifier
  182. Bogen CHB35a Problem
  183. 29KQ6 Datasheet
  184. Help selecting a thermistor
  185. Beard P.101, new-to-me.
  186. Audioromy 838 Amp Broke need help..
  187. Inexpensive Guitar Amp
  188. How to Read faded Tube Numbers
  189. Test data for 6H30PI & Hickok 539??
  190. Tube Text books "Reich"
  191. PCL805 parafeed SE idea + question
  192. 12V driver tubes for Engineer's Amp?
  193. >200W with 6BG6GA
  194. Leak stereo 20 modification
  195. Baby Huey components
  196. Monstrous 1kW amp!
  197. blue glow, how?
  198. Using different transformer taps for each needed B+
  199. Heating DHT Cathodes a new way???
  200. Noise problem in 572-10 PP amplifier
  201. Power transformer question (Bud?? calling Bud)
  202. Identifying 12AX7 Tubes
  203. PAS3 to volume pot
  204. 5F6A Amp build help (Fender Bassman)
  205. Jean Hiraga SE KT88
  206. ASC motor run caps....can they be mounted horizontal???
  207. Millivolt signal and tube sockets
  208. 6N1P Data sheet differences
  209. Confident in buying tubes on ebay ?
  210. CCS Troubles
  211. Mengyue el34b schematic needed
  212. safest way to power up a new build
  213. Phono amp Raytheon 6418 tubes
  214. YL1350 Help characteristic and output tranies
  215. EL84 PP using 5K plate to plate primate OPT
  216. VR tube flashing?
  217. Tabletop 12au7 Amp
  218. Renovated website: www.pmillett.com, www.tubebooks.org
  219. Troubleshooting Eico HF-85
  220. Custom chassis europe
  221. Mixer from pre-amp design
  222. SE Output Tranny - Dumb Question
  223. What Tube for a Differential Amplifier?
  224. Thinking of buying a Lumley Reference ST70 with attached passive pre
  225. Psu
  226. Protection of the Irreplaceable
  227. Trix T621 PA amplifier (British)
  228. Resistor types ??? (carbon or metal film)
  229. First Amp Build
  230. Help ID these little PP output xfrmrs?
  231. Rectifier voltage drop question
  232. dc and ac heater supply in Aikido
  233. Can I obtain a suitable B+ voltage with spare parts?
  234. Multi tap transformers dont use the whole windings?
  235. First layout with spud
  236. EL152, GU50 and EL156
  237. Convert a 110 volt Mcintosh Mc275 to 230volt
  238. transformer maker list
  239. design a preamp, so easy....
  240. SRPP - determining load and balancing
  241. Idea for all C3g phono stage
  242. temp check
  243. Pentode Question
  244. K & K Audio Transformer phase splitter?
  245. Transformer Efficiency
  246. How to test a 6H30 tube
  247. Karaoke Tube Hi-end In The Future
  248. What makes the old McIntosh stuff so good?
  249. Paralell 10M45's for 71A DHT filament?
  250. Rod Coleman CCS/gyrator help

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