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  1. 4211D Amp?
  2. Please, reccomand me about 7233 GE NOS
  3. Help! Schematic Conrad Johnson Premier 3
  4. Just an Idea?
  5. Tried this out, but needs more gain. . .
  6. EL34 Power Stage
  7. Daven Question
  8. How many rectifiers can have mesh plates?
  9. Real Quick Question!!
  10. Wattage of vintage resistors ?
  11. What is the signal path -- the red line?
  12. Hi-end definitive vacuum tube phono pre
  13. dual rectifier clone....
  14. Motorola Console Salvage
  15. single endedtransformer coupled 6sn7 mic preamp
  16. Brett's 12B4 schematic?
  17. Building first tube power amplifier, reccomendations?
  18. Can you use a MOSFET as a cathodyne
  19. Resolving cold midrange in 5687 circuit
  20. 829B SE Comments????
  21. Shielding and regulator location in the KTA 26 preamp
  22. Voice of music, antique or reproduction?
  23. Quick Question - Audio Note M1 or AR SP-6?
  24. Red Light District/Baby Huey (EL84 P-P) Output Iron
  25. help with PSE design
  26. Tantalum VS CC & metalfilm
  27. Rise-time question
  28. Have an odd problem with my Aikido.
  29. Weird Hybrid Splitter (equal impedances?)
  30. Tube 6550 to test
  31. Question regarding 3rd wire grounding and safety
  32. Plate Current VS Plate Voltage Graphs
  33. Inside information on Shuguang
  34. 6N6P vs. 6N6P-I
  35. Technical Survey Paper -- Need Some Help!
  36. VOLTAGE DOUBLER : drop in current?
  37. Using genetic algorithms to optimize pentode parameters
  38. Any idea what this thing is?
  39. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  40. bad 5ar4?
  41. 6DJ8 biasing question
  42. anyone ever use el86/6cw5?
  43. Is it worth using anything other than DHTs for preamps?
  44. Billington Export Ltd Tubes?
  45. 845SE : comments on this circuit?
  46. Tip-Restoring Vintage Pot
  47. B+ Delay - Is this a problem?
  48. Toroids in SET
  49. I have to sell my Pyramid-V prototype...
  50. Stealing a preamp
  51. OLD GOLD, or something I can dissassemble and use
  52. CF PP design
  53. Preamp Idea
  54. Metal Oxide Screen Stoppers
  55. Splitting up power supply inductance
  56. Back to Back transformers and safety ground
  57. 7 pin ECC81.
  58. 26 Driver Tube for 45 - Operating Points
  59. My New pre-amplifier£¡
  60. 6BY5GA question
  61. Will this work as a differential stage?
  62. Tube ID and suggestions
  63. 6L6 to EL34 conversion
  64. my saturation test ??
  65. DO-35 diode inside vacuum tube ?
  66. Transformer Polarity
  67. Where to go for tube gear in Hong Kong?
  68. EL84 Shunt reg for pre-amp, 85A1?
  69. Tube Preamp Idea
  70. UTC Linear Standard High Level matching transformers
  71. Manley Compact 160w noise problem -please help
  72. D3a Experimenters Breadboard Project
  73. Dtmm
  74. Running Single Ended 6V6 in Triode Mode
  75. 6v6pp Finished
  76. Stereo Buffer with a single twin triode
  77. Anybody recognize this pentode?
  78. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  79. My new amplifier£_300BSE!
  80. low zout vs output transfo
  81. can't find valve art tube - and glowey tube pic
  82. Which Phono Pre???
  83. BB 1702 DAC + transformer I/V ?
  84. aikido build thread-
  85. Triode Connected 6BK5
  86. need help in building tube amplifier 10 watter
  87. Parasitic oscillations in general
  88. Help Russian tube experts.
  89. forced aircooling
  90. Dirty Cheap Vintage Pot Fix - Your Opinion Please
  91. ask jan first
  92. running 6S4S/6C4C hot .. calling widowmaker
  93. Covi Mark II OTL Help
  94. Volume pot between triodes?
  95. Series Pass Transistor for TL-783
  96. Anyone else have the new Mullard EL34's?
  97. VR tubes in single ended circuits
  98. Transformer for Tube Amps?
  99. "Magga Amp Workshop" builds again (Simple 45 Project)
  100. How to handle Reclaimed Transformers
  101. Dual supply...
  102. How much would this cost/how complicated would this be...
  103. Tube Buffer – question?
  104. Bogen CHB 10A questions
  105. 12B4 Preamp
  106. adding output tubes etc to pre amp
  107. primaluna dialogue 5 and fanboys?
  108. yaqin mc-100b
  109. KT88 in place of 6550?
  110. Tube manaul data sheets
  111. Need a bias supply how??
  112. Wouldn't you just love to have these!. United Electronics 211's
  113. Using single tube of Dual
  114. 21st century tube? Non-Vacuum
  115. making two minibloks for stereo
  116. Lynn Olson Raven Question
  117. Inrush current limiting heater filaments
  118. Tube amp with "meter"?
  119. lytics and choke AFTER regulator
  120. Boosing the power of your existing amp.
  121. Component ID from a 50EH5 Amp
  122. Music Angel KT88 Bridged /Bias problem
  123. Output of preamp drops when overdriven
  124. Choke load calculation...
  125. 807 SE amp schematic
  126. DC Heater Voltage
  127. Choke loading vs. SRPP
  128. Unloaded Power Transformer Current Draw/Janus-Aikido snipet
  129. Need help with tubed output for PCM1793 DAC
  130. Single ended transformer grounding question
  131. First Shot at a 41 SE amp
  132. [Question] Ground Error?
  133. TOMIKO OPT-SE, any good?
  134. 6550 Williamson - Low Bass Response...
  135. Preamp design question
  136. Power Supply Question
  137. Altec 1568A modifications for comments and help…. again
  138. H & K Tube 20 unruly gain
  139. Electro-Harmonix interview
  140. Using LED bias for 4.5 mA cathode current, is it a good idea?
  141. amp dead?
  142. 7189 vs EL84 +458v plate
  143. What does your Aikido drive?
  144. Help with Decware SE84 Kit!
  145. Hybrid Amplifier in Small cases
  146. audio mixer with tubes?
  147. Help with KT88 biasing
  148. Bad Schottky??
  149. Aikido Diagnostic
  150. Could this become a Baby Huey killer ?
  151. SV83 vs EL84
  152. KT88 PP-5 Monoblock Amplifier
  153. RE604 SET amp
  154. Dropping rectifier filament voltage
  155. need suggestion about MC pre-pre
  156. New gain stage .. Opinions???
  157. Using SS to augment < 100Hz?
  158. A help with an soviet transformer.
  159. I thought that I had seen everything
  160. Triatic PP-amp with 6p14p
  161. Single 6N6P stereo pre-amp
  162. high frequency oscillation and decoupling question
  163. Long tailed pair schematic questions
  164. CCS Kit options
  165. 13e1
  166. Rogers Tube Amp
  167. Pair of McIntosh MC-60 on Dallas Craigslist
  168. Lundahl LL1517. What is it good for?
  169. Edcor OPT Voltage Rating?
  170. Which Tube to Start with?
  171. Basic Transformer hookup wiring
  172. Beta followers, biasing.
  173. 6W 2xEL519 Half-hybrid Class-A OTL
  174. Can a Class AB PP amp be said to be operating in Class A at low signal levels?
  175. Wiring / Layout question
  176. Yaqin MC10K
  177. help me lower the gain of this preamp pls
  178. How to wiring the transformer
  179. "universal" P-P driver board
  180. series or parallel?
  181. Question about Cathode bias in this Magnavox amp. . .
  182. GK71 B+ turn on delay
  183. Paralleling Triodes in a 6SN7GT
  184. 6C33C-B. PP or SE ?
  185. 6550 Triode B+
  186. Aikido Phono Pre.....any good???
  187. Tube Preamp L&amp;R Channel different current draw
  188. amp is dead!
  189. What you think about Ayon Audio Spark SE 6C33 tube 22 W
  190. Running stereo through a single tube with dual triodes?
  191. Looking for 6AQ5 audio preamp schematic!
  192. Quad KT88 oscillation problem
  193. El86 driving high beta bipolar power tr
  194. Installed 12&quot; Speaker in Pro Jr---Now What??
  195. How do I design a pentode constant current source plate load?
  196. Socket for 6AQ5
  197. new 845? Who produces it?
  198. Looking for a 45 SE Schematic
  199. Counterpoint SA-12 outputs 2SK134/2SJ49 work??
  200. Tube Amps left outdoors 24/7
  201. The beast OTL
  202. Input transformer: floating input = distortion
  203. Altmann's Split Feedback concept
  204. preamp for a JE LABS 2A3DX amp
  205. Phase flip needed -Interstage Transformer?
  206. Can your amp do this?
  207. AES out of 1625?
  208. Any info on Haltron 6BL8 tubes?
  209. Need Schematic for 12 Volt Tube Buffer
  210. SR-101 Pioneer Spring Reverb
  211. Basic Transformer Question - how do I know build possibilities?
  212. Source for 2.5VCT 5A filament transformers
  213. Nichicon VR VZ or GU
  214. Missing 6.3V CT/'Cockeyed Bridge' problem
  215. Best plate voltage for 6dj8 at +-6ma
  216. Max supply voltage for small DHT's
  217. Operating Temperature of KT88?
  218. First Tube Amp
  219. earthing advice on a US amp
  220. distortion at low volume
  221. interstage transformer cheating?
  222. PP EL34 or 6L6 circuits?
  223. Rectifier Capacator (voltage adjust)
  224. Passive RIAA and cap variation
  225. 6T9 push pull with Cathode Coupled input
  226. mixed bias
  227. Need help: tube DAC and Phono pre-amp
  228. Feedback equation
  229. Lafayette PA 675 Schematic ?
  230. phono preamp?
  231. Input tube recommendations...
  232. blind test tube preamp free for all
  233. Estimate Miller of Triode Strapped Pentode
  234. Tube Care for Prolonged Life
  235. bias resistor to use for a PP 300B?
  236. 12AY7 preamp schematic
  237. visio shapes
  238. vt25 in pre amp
  239. Single supply 6922 buffer with 2SK CCS
  240. Aikido and 30W Class AB power buffer?
  241. Simple Pentode driver for a 45 ?
  242. Sennheiser HD 650 Question
  243. Edcor specs?
  244. 6X5, 2x 6SL7 &amp; a 6v6GT....
  245. strange tube? E-8128
  246. Value of grid-leak resistor
  247. TubeTech Valves
  248. 1st build done.
  249. Tube socket does not fit tube
  250. 300B SET Bias Help

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