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  1. McIntosh MC-3500 Schematic Information
  2. Use 2X SE output transformers fo 1x PP
  3. 12B4a spice model.
  4. recommended a tube amp for Celestron Studio Ditton 66's
  5. Help needed with bias circuit
  6. How to bias DH dual triodes?
  7. Any of these tubes good for audio applications?
  8. DIY AN M7 need help !!!
  9. Need schematic for Bell 2420 amp
  10. new SimpleSE build
  11. My Citation II Rebuild
  12. KT88 cathode resistors?
  13. Dynaco ST35 boards
  14. Triode strapping a 6V6 (or any tetrode/pentode, really)
  15. ECC 83 + ELL 80 maybe?
  16. need amp suggestions please.
  17. Phase splitter which tube?
  18. WANTED: 12B4A tubes
  19. re-stacking an output transformer
  20. A directly heated triode or Pentode SE amp on a Budget
  21. Annoying high frequency ringing from my 832 tube amp
  22. 30 Amp Knobs
  23. A question about audio interconnects for the ones here with such knowledge.
  24. Hi-end GM70 amplifier with only 2 stages
  25. Paragon
  26. Simple SE with CCS and fixed bias
  27. Idea(s) for simple HV regulated psu
  28. NOS Philips "miniwatt/dario" tubes
  29. Hybrid Class D with 6n6p tubes
  30. Any ideas how to estimate VA or mA of Power Tranny
  31. 6L6 Grid resistors??
  32. HeathKit W-2: Missing Tube
  33. Edcor CXSE25-8-5K Dimensions
  34. Bias Pots
  35. Negative Feedback
  36. scott 299D output transformers?
  37. chocke anode load, please explain me..
  38. Integrated HiEnd Amp
  39. Looking for advice/tips regarding simple SE amplifer
  40. Tube amps from vintage RTR's?
  41. componet upgrade
  42. What is "AA" ?
  43. question about twin triode tubes
  44. Building a preamp - somewhat new to tubes
  45. need some guidance about tube amplifiers
  46. Blackgate FK 10000 uF ??
  47. PT failure dangers
  48. Outer foil k40y-9
  49. sansui 1000a maintenance
  50. filter cap question
  51. add UL tap for 125ese
  52. Bogen D070 Amp - HELP w/ INFO.
  53. Humming asl 2004dt wave pre amp
  54. Cany anyone supply any info. about this amplifier?
  55. Low voltage 845SE with 300B driver
  56. Cabinet Help!!!!
  57. dc heater supply help
  58. gu-29 tube
  59. LTP question
  60. Over 500V rated electrolytics?
  61. Fireplug? (inline fuse)
  62. Help! Flash-over on my amp :-(
  63. 6550 drive question
  64. 4211D Amp?
  65. Please, reccomand me about 7233 GE NOS
  66. Help! Schematic Conrad Johnson Premier 3
  67. Tubelab SE in parallel?
  68. Just an Idea?
  69. Tried this out, but needs more gain. . .
  70. EL34 Power Stage
  71. Daven Question
  72. How many rectifiers can have mesh plates?
  73. Real Quick Question!!
  74. Wattage of vintage resistors ?
  75. What is the signal path -- the red line?
  76. Hi-end definitive vacuum tube phono pre
  77. Resistors for Stepped Attenuator
  78. dual rectifier clone....
  79. Motorola Console Salvage
  80. single endedtransformer coupled 6sn7 mic preamp
  81. Brett's 12B4 schematic?
  82. insulated turret terminals
  83. Building first tube power amplifier, reccomendations?
  84. Can you use a MOSFET as a cathodyne
  85. Resolving cold midrange in 5687 circuit
  86. 829B SE Comments????
  87. Shielding and regulator location in the KTA 26 preamp
  88. Voice of music, antique or reproduction?
  89. Quick Question - Audio Note M1 or AR SP-6?
  90. Red Light District/Baby Huey (EL84 P-P) Output Iron
  91. help with PSE design
  92. Tantalum VS CC & metalfilm
  93. Rise-time question
  94. Have an odd problem with my Aikido.
  95. Weird Hybrid Splitter (equal impedances?)
  96. Tube 6550 to test
  97. Using semiconductor curvetracer for tubes...
  98. Question regarding 3rd wire grounding and safety
  99. Plate Current VS Plate Voltage Graphs
  100. Toggle Switch Contact Type and Rating
  101. Inside information on Shuguang
  102. 6N6P vs. 6N6P-I
  103. Technical Survey Paper -- Need Some Help!
  104. VOLTAGE DOUBLER : drop in current?
  105. Using genetic algorithms to optimize pentode parameters
  106. Favorite size wire for signal wiring?
  107. Any idea what this thing is?
  108. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  109. anyone ever use el86/6cw5?
  110. bad 5ar4?
  111. 6DJ8 biasing question
  112. Is it worth using anything other than DHTs for preamps?
  113. Billington Export Ltd Tubes?
  114. 845SE : comments on this circuit?
  115. Tip-Restoring Vintage Pot
  116. B+ Delay - Is this a problem?
  117. Toroids in SET
  118. I have to sell my Pyramid-V prototype...
  119. Stealing a preamp
  120. OLD GOLD, or something I can dissassemble and use
  121. CF PP design
  122. Preamp Idea
  123. Metal Oxide Screen Stoppers
  124. Splitting up power supply inductance
  125. Back to Back transformers and safety ground
  126. Vintage tube tester
  127. 7 pin ECC81.
  128. 26 Driver Tube for 45 - Operating Points
  129. My New pre-amplifier£¡
  130. Echocord Super Question
  131. High quality matching panel meters?
  132. 6BY5GA question
  133. Seeking schematic for Conn organ amp
  134. Will this work as a differential stage?
  135. Tube ID and suggestions
  136. 6L6 to EL34 conversion
  137. my saturation test ??
  138. DO-35 diode inside vacuum tube ?
  139. Transformer Polarity
  140. Where to go for tube gear in Hong Kong?
  141. EL84 Shunt reg for pre-amp, 85A1?
  142. Tube Preamp Idea
  143. UTC Linear Standard High Level matching transformers
  144. Manley Compact 160w noise problem -please help
  145. D3a Experimenters Breadboard Project
  146. Dtmm
  147. Running Single Ended 6V6 in Triode Mode
  148. 6v6pp Finished
  149. Stereo Buffer with a single twin triode
  150. Anybody recognize this pentode?
  151. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  152. My new amplifier£_300BSE!
  153. low zout vs output transfo
  154. can't find valve art tube - and glowey tube pic
  155. Which Phono Pre???
  156. BB 1702 DAC + transformer I/V ?
  157. aikido build thread-
  158. Triode Connected 6BK5
  159. need help in building tube amplifier 10 watter
  160. Parasitic oscillations in general
  161. Help Russian tube experts.
  162. forced aircooling
  163. Dirty Cheap Vintage Pot Fix - Your Opinion Please
  164. ask jan first
  165. running 6S4S/6C4C hot .. calling widowmaker
  166. Covi Mark II OTL Help
  167. Volume pot between triodes?
  168. Series Pass Transistor for TL-783
  169. Anyone else have the new Mullard EL34's?
  170. VR tubes in single ended circuits
  171. Transformer for Tube Amps?
  172. "Magga Amp Workshop" builds again (Simple 45 Project)
  173. How to handle Reclaimed Transformers
  174. Dual supply...
  175. How much would this cost/how complicated would this be...
  176. low cost DHT hum pots vendors?
  177. Tube Buffer – question?
  178. Bogen CHB 10A questions
  179. 12B4 Preamp
  180. adding output tubes etc to pre amp
  181. primaluna dialogue 5 and fanboys?
  182. yaqin mc-100b
  183. KT88 in place of 6550?
  184. Tube manaul data sheets
  185. Need a bias supply how??
  186. Wouldn't you just love to have these!. United Electronics 211's
  187. Using single tube of Dual
  188. 21st century tube? Non-Vacuum
  189. making two minibloks for stereo
  190. Lynn Olson Raven Question
  191. Inrush current limiting heater filaments
  192. Tube amp with "meter"?
  193. lytics and choke AFTER regulator
  194. Boosing the power of your existing amp.
  195. Component ID from a 50EH5 Amp
  196. Music Angel KT88 Bridged /Bias problem
  197. Output of preamp drops when overdriven
  198. Choke load calculation...
  199. 807 SE amp schematic
  200. DC Heater Voltage
  201. Choke loading vs. SRPP
  202. Unloaded Power Transformer Current Draw/Janus-Aikido snipet
  203. Need help with tubed output for PCM1793 DAC
  204. Single ended transformer grounding question
  205. First Shot at a 41 SE amp
  206. [Question] Ground Error?
  207. TOMIKO OPT-SE, any good?
  208. 6550 Williamson - Low Bass Response...
  209. Preamp design question
  210. Reading Oscilloscope Traces -For Dummies
  211. Power Supply Question
  212. Altec 1568A modifications for comments and help…. again
  213. H & K Tube 20 unruly gain
  214. Electro-Harmonix interview
  215. Using LED bias for 4.5 mA cathode current, is it a good idea?
  216. amp dead?
  217. 7189 vs EL84 +458v plate
  218. What does your Aikido drive?
  219. Help with Decware SE84 Kit!
  220. Hybrid Amplifier in Small cases
  221. audio mixer with tubes?
  222. Help with KT88 biasing
  223. Bad Schottky??
  224. Aikido Diagnostic
  225. Could this become a Baby Huey killer ?
  226. SV83 vs EL84
  227. KT88 PP-5 Monoblock Amplifier
  228. RE604 SET amp
  229. Dropping rectifier filament voltage
  230. need suggestion about MC pre-pre
  231. New gain stage .. Opinions???
  232. Using SS to augment < 100Hz?
  233. A help with an soviet transformer.
  234. I thought that I had seen everything
  235. Triatic PP-amp with 6p14p
  236. Single 6N6P stereo pre-amp
  237. Tubelab SE input tube filament
  238. high frequency oscillation and decoupling question
  239. Long tailed pair schematic questions
  240. CCS Kit options
  241. Variac Question for Thatch_Ear
  242. 13e1
  243. Rogers Tube Amp
  244. Pair of McIntosh MC-60 on Dallas Craigslist
  245. Lundahl LL1517. What is it good for?
  246. Edcor OPT Voltage Rating?
  247. Which Tube to Start with?
  248. Basic Transformer hookup wiring
  249. Beta followers, biasing.
  250. 6W 2xEL519 Half-hybrid Class-A OTL

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