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

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