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  1. Building first tube power amplifier, reccomendations?
  2. Can you use a MOSFET as a cathodyne
  3. Resolving cold midrange in 5687 circuit
  4. 829B SE Comments????
  5. Shielding and regulator location in the KTA 26 preamp
  6. Voice of music, antique or reproduction?
  7. Quick Question - Audio Note M1 or AR SP-6?
  8. Red Light District/Baby Huey (EL84 P-P) Output Iron
  9. help with PSE design
  10. Tantalum VS CC & metalfilm
  11. Rise-time question
  12. Have an odd problem with my Aikido.
  13. Weird Hybrid Splitter (equal impedances?)
  14. Tube 6550 to test
  15. Using semiconductor curvetracer for tubes...
  16. Question regarding 3rd wire grounding and safety
  17. Plate Current VS Plate Voltage Graphs
  18. Toggle Switch Contact Type and Rating
  19. Inside information on Shuguang
  20. 6N6P vs. 6N6P-I
  21. Technical Survey Paper -- Need Some Help!
  22. VOLTAGE DOUBLER : drop in current?
  23. Using genetic algorithms to optimize pentode parameters
  24. Favorite size wire for signal wiring?
  25. Any idea what this thing is?
  26. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  27. anyone ever use el86/6cw5?
  28. bad 5ar4?
  29. 6DJ8 biasing question
  30. Is it worth using anything other than DHTs for preamps?
  31. Billington Export Ltd Tubes?
  32. 845SE : comments on this circuit?
  33. Tip-Restoring Vintage Pot
  34. B+ Delay - Is this a problem?
  35. Toroids in SET
  36. I have to sell my Pyramid-V prototype...
  37. Stealing a preamp
  38. OLD GOLD, or something I can dissassemble and use
  39. CF PP design
  40. Preamp Idea
  41. Metal Oxide Screen Stoppers
  42. Splitting up power supply inductance
  43. Back to Back transformers and safety ground
  44. Vintage tube tester
  45. 7 pin ECC81.
  46. 26 Driver Tube for 45 - Operating Points
  47. My New pre-amplifier£¡
  48. Echocord Super Question
  49. High quality matching panel meters?
  50. 6BY5GA question
  51. Seeking schematic for Conn organ amp
  52. Will this work as a differential stage?
  53. Tube ID and suggestions
  54. 6L6 to EL34 conversion
  55. my saturation test ??
  56. DO-35 diode inside vacuum tube ?
  57. Transformer Polarity
  58. Modular Gain Stages for Tube Guitar Amp
  59. Where to go for tube gear in Hong Kong?
  60. EL84 Shunt reg for pre-amp, 85A1?
  61. Tube Preamp Idea
  62. UTC Linear Standard High Level matching transformers
  63. Manley Compact 160w noise problem -please help
  64. D3a Experimenters Breadboard Project
  65. Dtmm
  66. Running Single Ended 6V6 in Triode Mode
  67. 6v6pp Finished
  68. Stereo Buffer with a single twin triode
  69. Marshall volume drop off help
  70. Anybody recognize this pentode?
  71. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  72. My new amplifier£_300BSE!
  73. low zout vs output transfo
  74. can't find valve art tube - and glowey tube pic
  75. Which Phono Pre???
  76. EICO HF-20 Guitar Amp Convert
  77. BB 1702 DAC + transformer I/V ?
  78. aikido build thread-
  79. Triode Connected 6BK5
  80. need help in building tube amplifier 10 watter
  81. Parasitic oscillations in general
  82. Help Russian tube experts.
  83. forced aircooling
  84. Dirty Cheap Vintage Pot Fix - Your Opinion Please
  85. ask jan first
  86. running 6S4S/6C4C hot .. calling widowmaker
  87. An Odd Duck -- Gibson BR-6f Guitar Amp
  88. Covi Mark II OTL Help
  89. Volume pot between triodes?
  90. Series Pass Transistor for TL-783
  91. Anyone else have the new Mullard EL34's?
  92. VR tubes in single ended circuits
  93. Transformer for Tube Amps?
  94. "Magga Amp Workshop" builds again (Simple 45 Project)
  95. How to handle Reclaimed Transformers
  96. Dual supply...
  97. How much would this cost/how complicated would this be...
  98. low cost DHT hum pots vendors?
  99. Tube Buffer – question?
  100. Bogen CHB 10A questions
  101. 12B4 Preamp
  102. adding output tubes etc to pre amp
  103. primaluna dialogue 5 and fanboys?
  104. yaqin mc-100b
  105. KT88 in place of 6550?
  106. Tube manaul data sheets
  107. Need a bias supply how??
  108. Wouldn't you just love to have these!. United Electronics 211's
  109. Using single tube of Dual
  110. 21st century tube? Non-Vacuum
  111. making two minibloks for stereo
  112. Lynn Olson Raven Question
  113. Inrush current limiting heater filaments
  114. Tube amp with "meter"?
  115. lytics and choke AFTER regulator
  116. Boosing the power of your existing amp.
  117. Component ID from a 50EH5 Amp
  118. Music Angel KT88 Bridged /Bias problem
  119. Output of preamp drops when overdriven
  120. Choke load calculation...
  121. 807 SE amp schematic
  122. DC Heater Voltage
  123. Choke loading vs. SRPP
  124. Unloaded Power Transformer Current Draw/Janus-Aikido snipet
  125. Need help with tubed output for PCM1793 DAC
  126. Single ended transformer grounding question
  127. Reforming Caps with Variac
  128. First Shot at a 41 SE amp
  129. [Question] Ground Error?
  130. TOMIKO OPT-SE, any good?
  131. 6550 Williamson - Low Bass Response...
  132. Preamp design question
  133. Reading Oscilloscope Traces -For Dummies
  134. Power Supply Question
  135. PI Question Guitar Amp Related
  136. Altec 1568A modifications for comments and help…. again
  137. H & K Tube 20 unruly gain
  138. Electro-Harmonix interview
  139. Using LED bias for 4.5 mA cathode current, is it a good idea?
  140. amp dead?
  141. 7189 vs EL84 +458v plate
  142. What does your Aikido drive?
  143. Help with Decware SE84 Kit!
  144. Hybrid Amplifier in Small cases
  145. audio mixer with tubes?
  146. Epiphone Galaxy 25 transformer problem
  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. Tubelab SE input tube filament
  163. high frequency oscillation and decoupling question
  164. Long tailed pair schematic questions
  165. CCS Kit options
  166. Variac Question for Thatch_Ear
  167. 13e1
  168. Rogers Tube Amp
  169. Pair of McIntosh MC-60 on Dallas Craigslist
  170. Lundahl LL1517. What is it good for?
  171. Edcor OPT Voltage Rating?
  172. Which Tube to Start with?
  173. Basic Transformer hookup wiring
  174. Beta followers, biasing.
  175. 6W 2xEL519 Half-hybrid Class-A OTL
  176. Can a Class AB PP amp be said to be operating in Class A at low signal levels?
  177. Wiring / Layout question
  178. Yaqin MC10K
  179. help me lower the gain of this preamp pls
  180. How to wiring the transformer
  181. "universal" P-P driver board
  182. series or parallel?
  183. Question about Cathode bias in this Magnavox amp. . .
  184. GK71 B+ turn on delay
  185. Paralleling Triodes in a 6SN7GT
  186. 6C33C-B. PP or SE ?
  187. 6550 Triode B+
  188. Aikido Phono Pre.....any good???
  189. Tube Preamp L&amp;R Channel different current draw
  190. amp is dead!
  191. What you think about Ayon Audio Spark SE 6C33 tube 22 W
  192. Running stereo through a single tube with dual triodes?
  193. Looking for 6AQ5 audio preamp schematic!
  194. Quad KT88 oscillation problem
  195. El86 driving high beta bipolar power tr
  196. Wikipedia article: Tube sound
  197. Installed 12&quot; Speaker in Pro Jr---Now What??
  198. How do I design a pentode constant current source plate load?
  199. Socket for 6AQ5
  200. new 845? Who produces it?
  201. Looking for a 45 SE Schematic
  202. Counterpoint SA-12 outputs 2SK134/2SJ49 work??
  203. Tube Amps left outdoors 24/7
  204. The beast OTL
  205. Input transformer: floating input = distortion
  206. Altmann's Split Feedback concept
  207. preamp for a JE LABS 2A3DX amp
  208. Phase flip needed -Interstage Transformer?
  209. Can your amp do this?
  210. AES out of 1625?
  211. Any info on Haltron 6BL8 tubes?
  212. Need Schematic for 12 Volt Tube Buffer
  213. Input impedance for Simple SE?
  214. SR-101 Pioneer Spring Reverb
  215. Basic Transformer Question - how do I know build possibilities?
  216. Source for 2.5VCT 5A filament transformers
  217. Nichicon VR VZ or GU
  218. Missing 6.3V CT/'Cockeyed Bridge' problem
  219. Best plate voltage for 6dj8 at +-6ma
  220. Max supply voltage for small DHT's
  221. Operating Temperature of KT88?
  222. First Tube Amp
  223. earthing advice on a US amp
  224. distortion at low volume
  225. interstage transformer cheating?
  226. PP EL34 or 6L6 circuits?
  227. Rectifier Capacator (voltage adjust)
  228. Passive RIAA and cap variation
  229. 6T9 push pull with Cathode Coupled input
  230. mixed bias
  231. Need help: tube DAC and Phono pre-amp
  232. Feedback equation
  233. Lafayette PA 675 Schematic ?
  234. phono preamp?
  235. Input tube recommendations...
  236. blind test tube preamp free for all
  237. Estimate Miller of Triode Strapped Pentode
  238. Tube Care for Prolonged Life
  239. bias resistor to use for a PP 300B?
  240. 12AY7 preamp schematic
  241. visio shapes
  242. vt25 in pre amp
  243. Wire Wound Pontentiometers - resistors
  244. Sound City B120
  245. Single supply 6922 buffer with 2SK CCS
  246. Aikido and 30W Class AB power buffer?
  247. Simple Pentode driver for a 45 ?
  248. Sennheiser HD 650 Question
  249. ampeg svt 2 pro preamp problem
  250. Edcor specs?

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