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  1. aikido noval all in one caps upgrade
  2. Specific grid stopper question
  3. GU50 Screen Driven, DC Coupled
  4. April fool?
  5. Providing both balanced and unbalanced inputs
  6. Best triode section inside ecc81 tube?
  7. opt for 45 tube
  8. Designing an Interstage Transformer
  9. Tube Amplifier Builder's Competition
  10. testing tubes for shorts
  11. Tube kits
  12. GU29 PP Amplifier
  13. 1625 tube radio?
  14. Measuring volts on an unloaded PSU secondary
  15. Suggest a preamp project for me.
  16. Audio Magazine
  17. Jadis DA88S schematic
  18. clone jadis jp200 preamp
  19. GROMMES LJ5
  20. Altec 1570B Feedback
  21. rebuilding 3tube zenith amp
  22. Effect of lower G2, EL84 PP
  23. Phono connection for pioneer sx34b
  24. Low output from two 6L6's for no apparent reason?
  25. Preamp design ok?
  26. GZ34 base?
  27. Tube Technology Genesis 100w monoblock manual?
  28. 6SN7 & 6V6 Push Pull - increase gain
  29. screen grid resistor value
  30. KT88 design questions
  31. el84/12ax7 se schematic needed!
  32. Broken AMC CVT 2100
  33. 98dB speaker - El Cheapo
  34. consolidated raw tube data
  35. Loadlines for Parallel SE outputs
  36. What is the correct load for an 845 triode?
  37. Rauland W-835A amplifier, choke field coil output?
  38. First use for Trancendent Sound Tube Analyzer
  39. Schematics/vintage
  40. APPJ PA0901A / Miniwatt N3 schematics
  41. APPJ PA0901A() schematics
  42. Help Needed: Lower Gain on a Tube Amp?
  43. Help: Hickok Western Electric KS-15750 Calibration
  44. Mullard ecc82 12au7 code help
  45. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  46. ST-70 Power Transformer
  47. Help Identifying a Tube - Westinghouse 12AX7A
  48. An incredible collection!
  49. Using only half of a stereo PP amp
  50. Alternate Electrolytic Caps for SimpleSE (and others)
  51. Low voltage vs. High Voltage Preamp.
  52. 6J6 Headphone hybrid amplifer?
  53. Hybrid headphone amp.....
  54. Please help with hum problem..
  55. Dead Audio Innovations Series 500
  56. Problems with E88CC / 6922 drawing grid current on power-up
  57. H.J.Leak TL12 "point one"
  58. Tubecad hybrird feedforward feedback shunt regulator
  59. 6v6 SE kit - any good?
  60. DBX 576 complete upgrade. Advices?
  61. help !! 45 tube
  62. 6P45S PP, simulation frustration.
  63. AMC CVT 3030 one more try - or dumpster
  64. Help for 211 HV PSU with damper diodes
  65. Flexible supply idea
  66. what range speaker used 2x 18watt or 2x 10 watt on 18 watts amp
  67. Equalizer on EL84 project
  68. parallel single-ended 12W6
  69. help improving/refurb a Fisher k-10 Tube spring reverb
  70. S.E.X. amp + Impedance switch build problems.
  71. problem with speaker
  72. EC80 as preamp tube.
  73. 6CJ3 Rectifier Connection Question ?
  74. AC Filament Voltage Question ?
  75. My new GU50 SE (all pentode)
  76. Ming Da MC-3R Schematics
  77. 12B4 PSE build thread
  78. Looking for options for 4 volt heater
  79. Help me,Art Audio Concerto
  80. heathkit t3 12sh7 tube
  81. PSU dimensioning for pre-amp
  82. Old ceramic dogbone capacitor color codes
  83. Williamson preamp identification help wanted
  84. Adequate switch for UL-triode-pentode
  85. pl500 based integrated OTL amplifier
  86. Capacitor dielectric - high impedance headphones
  87. REQUEST FOR OPINIONS
  88. Mysterious LCR phono preamp
  89. Eimac 100TL Output Transformers and Bias Point ?
  90. Tube deterioration
  91. Heathkit XO-1 power cords
  92. EF86 Push-Pull "power"-amp
  93. Transformers!?
  94. Weird ground loop problem
  95. Re-caping Cayin A70-T
  96. A3 attenuator help for an Aikido line amp
  97. Driver Tube Power Supply Question ?
  98. Line Stage vs. Phase Inverter - 12A*7
  99. Intermittent Buzz Decware Zen SE84Bged
  100. Tamura F2011/el34 x 4
  101. E88CC/6922 battery supply
  102. Aikido 9-pin all-in-1 headphone amp problem
  103. Filament Transformer Question ?
  104. Load Resistance, etc., chart for Class A push pull 6L6s?
  105. Question about preamp, boost and line-stage
  106. help please
  107. Practical phase inverter article
  108. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  109. Rio W-41 no sound
  110. Help: TDA1541A DAC Output To Tube Gainstage
  111. Pieter's take on an all DHT headphone amplifier.
  112. toroidal chokes
  113. Truly Silly Transformer Question
  114. Elementary resistance question
  115. Russian 310A + 300B
  116. 1959 RCA tube amplifier needs help
  117. What's going on?
  118. Aikido 9-pin All-in-one Testing question
  119. Gyrator in Tail of LTP
  120. tubemaster EL84
  121. Silly transformer question
  122. Marant 8b bias meter
  123. ElectroTone OrganMate spring reverb - mod suggestions?
  124. Opera Consonance resitor question ?
  125. ADI's Double Dyna
  126. DuMont Stereo Tube Console late 50's - What to do?
  127. No Sound from Magnavox EL 1484-1 amp/phono
  128. Elevated Heater Question
  129. 6P45S/EL509 input capacitance in triode mode
  130. 6E6p-e Little Tiny Wire
  131. another aikido ?
  132. NOS 6P3S-e or cheap new 5881? Identify this tube..
  133. Contan Audio from Melbourne Aus, any info?
  134. Loctal Base Post
  135. Timber amp with solid copper plate as earth and ground plane
  136. Dynaco ST70 - Which tubes do you like?
  137. 6SL7 in parallel driving 6550
  138. Will this work as a heater for 300b?
  139. Tube grid resistance for 6P45S, fine?
  140. Akido help pls
  141. BEARD P101 information
  142. Got some 6n3c-e (6p3s-e)with blank bulb?
  143. Graaf GM-20
  144. medium power OTL circlotron amplifier
  145. Help me identity this amp
  146. Hajdinjak preamp + 2x mono tube amp -What to do?
  147. Moscode 600 Noisy Fan
  148. component reduction in signal chain
  149. Aikido with Stax
  150. 'High power' shunt regulator
  151. Help need on Xindak XA3200MII hybrid pre-amplifier
  152. ideas for tube burn in / bias match station
  153. KT120 triode operation single stage amp
  154. Question regarding 7199 Tube wiring
  155. Why do modern PP OPTs have 16 Ohm taps?
  156. 10M45 current source
  157. 12bh7 in place of ecc82
  158. High voltage winding no center tap?
  159. Marantz 8b recap
  160. Pair Quad II in all original condition... restore or sell
  161. Where to find tube designers for hire?
  162. 10M45S problem
  163. 300B Load Line and Bias?
  164. Looking for little help with Glassware Janus shunt reg
  165. Quick question about grounding
  166. Source for 6jg5 or equivalent in Europe
  167. Need your help: Change from el34 to 6550 ends in a desaster
  168. conn el 6026 tube amp schematic for hifi stereo
  169. GE 211 "flash" question
  170. Learned something (the hard way) about mica capacitors
  171. Aikido octal floating output
  172. Screened cable for rewiring valve amp
  173. Fault developed, producing static noise
  174. Tubelab SE buzz and crackle
  175. EL34+Ecc83 amp hum
  176. Gold plated Dynaco ST-70 for $3k
  177. Preamp noise level ?
  178. KOSS A1220 - Vintage Tube Headphone Amp - Diagnose and Mod questions...
  179. Rectifier tube cathode and heater
  180. testing voltage on tube filament, without the tube
  181. New semi-custom metal chassis manufacturer
  182. 55 WPC 1625 Mono Block Amps
  183. Masco C-10 Mic/Phono Amp
  184. New driver stage for dynaco mk3
  185. Power Transformer Issue
  186. Marantz 8B
  187. Safety questions
  188. Step Attenuator
  189. amplifier output impedance measurement
  190. Regulated Vs Non-regulated linear Power Supply
  191. Single RIAA passive eq design for differential DC coupled tube circuit
  192. Amp to Drive Lowther DX3's in Rear Loaded Horn
  193. Anyone know what's going on with Antek?
  194. Sources of 120hz hum?
  195. make adapter from 6n2p to 12ax7
  196. DC coupling with a choke?
  197. help with hum 12ax7 preamp
  198. Signal->crossover->3 amps->speaker
  199. I want to build an inexpensive EL 84 integrated amp with a phono section.
  200. Scott17 KT88 SE Tube Amp Build Log
  201. heater currents
  202. 300B Orientation so logo faces forward
  203. Leak stereo 20
  204. Suggestion: Output tube in SET amp for midbass frequency
  205. Monster Hammond Output XFMRs
  206. 6A3 / 6B4G Design
  207. DC7 MK3 up and running.
  208. Marrantz Model 9 Transformer Buy
  209. 6N2P/6Н2П low plate current increases noise?
  210. first tube amp
  211. rogers cadet 111 or Quad 11
  212. New FM-3 Motherboard
  213. 12ax7(ecc83) and 6n2p 12ax7...........differents??
  214. Heater supply
  215. Very upgraded ST-70 kit/build w/ 6550 tubes
  216. Marantz 8b Electrolytics
  217. How biasing mA in tubes
  218. PSU id and help (psu designer ii)
  219. The all DHT SET Headphone Amp
  220. Assistance with rectifiers in PSUD
  221. Music Angel XD 500 MkII Bias setting
  222. Magnoval
  223. S.E.X. amp plate chokes replacements
  224. Ampex 600 Questions
  225. Antek out of business until April
  226. SE EL34 in triode schematic
  227. Sylvania Console?
  228. Can output transfomers be pick and mixed?
  229. i have just notice that my yaqin 2100 vk bias settings is all over the place.
  230. Preamp Design Review Request
  231. Red Plate Of Doom
  232. LED cathode bias noise issue
  233. PCL86 se amplif.
  234. Is This a good Amplier?
  235. Question: Class AB Hybrid with small signal triode and Power Mosfet output?
  236. Contemporary Transformer for Doubler
  237. The volume pot - The hidden villain of preamp
  238. Heathkit EUW-15 Univ. Power Supply (Tube)
  239. diamond cathode tubes
  240. 6146B
  241. ef86 based preamp
  242. 12FQ7 Why and will it be shortage?
  243. Trouble w/ Maida regulator bias supply
  244. impedance calculations
  245. calibrate stark 8-77?
  246. EZLoad Dummy Load
  247. Best kit for a rookie tube builder
  248. schematic question? 805 feedback
  249. 6av5ga distortion spectrum
  250. Single stage line with anode-cathode feedback

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