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  1. 6CW5 / EL86 operating point
  2. RH84 power output
  3. 6n6p-ir
  4. Transformer bubbling
  5. Crackling noise.... pls help on Pre-amp
  6. RH84 amp. Plate is 300V. What voltage...
  7. Amplificator Class A 2 X EL504
  8. Help in testing 12ax7 and 7869 tubes
  9. Micro-Cap Tubes Parameters question
  10. Cathode Bypass Capacitor
  11. NOOB ALERT! sooo omany questions.....
  12. IS THIS A REAL E810F ???
  13. Chassis design question / cooling of small signal valves
  14. 5 leads pp output transformer
  15. Vote and Comment: SRPP vs. Aikido vs. Grounded Grid
  16. NEED ADVICE ON THIS SCHEMATIC AND WILL IT WOFK
  17. Help Identifying a Console Pull Amplifier
  18. sunaudio 2A3 circuit...is it good for newbie?
  19. KT120: When does it starts to sing ?
  20. Simple Time Delay (no more excuses for not having one)
  21. Cary SLP-05
  22. 6SN7 Grounded Grid
  23. input selector switch replacement help
  24. help needed with transformer wiring
  25. Tube Schematic Drawig Packages
  26. 12AU7 - 5V4G easy amplifier
  27. Glassware CCA 9-pin PDF
  28. Replacement for the tube 6922 (ECC88)?
  29. Which probes for my first scope?
  30. PP CATHODE BIAS WITH "CCS"
  31. current output tube amplifier
  32. Tube amp for a small room (newbie-like)
  33. What is this old thing from1929?
  34. Arduino cathode current HT etc
  35. Bizzare Output Transformer Connectivity...
  36. OPT to KT88?
  37. Help needed on identifing tube
  38. Amplifier circuit from tube radio
  39. Amplifier circuit from tube radio
  40. Using Valves Library in EAGLE CAD
  41. Biggest noval power pentode?
  42. Akita 12V preamp thoughts
  43. Help, what is this (Marconi 6204) ?
  44. Anyone try DHT 33 or 1Q5 Pentodes wired as Triode?
  45. Would this be a good buy?
  46. Looking for a complete DIY Tube amp
  47. Schematic by TS LIM Pre-amp
  48. Fisher Model 100 'AZ' Mono Amp Rebuild w/ Oscillations
  49. Measuring inductance
  50. Leak stereo 20
  51. Gain and gm of a QQE03/20 anyone ??
  52. Power supply options for tube amplifiers.
  53. CCS question mA
  54. Help wanted with testing and finetuning.
  55. YAQIN VK2100 pre amp
  56. Identify record player and valve
  57. AC Line Filter
  58. blue flash inside 5Y3GT
  59. Heater-Cathode Leakage
  60. Old Tube Kit
  61. Point to Point SET KT88/6550 Build
  62. D3a - MOSFET HYBRID CIRCLOTRON
  63. Aikido CCDA
  64. output impedance
  65. Bizzaro fix for hum problem needs explanation! Pretty Please
  66. Bizzaro fix for hum problem needs explanation! Pretty Please
  67. Questions regarding first build - K-502
  68. Good tube tech in Brooklyn NYC?
  69. Looking for LTspice tube models
  70. Audio Research SP15 : faulty phono stage
  71. Spark 810 looking for the diagram
  72. HP 8903B Question ?
  73. 1955 Hammond Organ Tube Amp
  74. Suggestions Please
  75. Croft Series 4 PL519 regulator
  76. Rectifier ID
  77. Adding headphone output to Darling amp
  78. CLC vs CLCLC Filter Power Supply
  79. Where to get Vacuum Tube Valley magazine?
  80. Magnavox 8802 HELP!!!
  81. Vaa for KT120
  82. Tubes in a Home Theater?
  83. Yaqin mc 10l tube risers?
  84. Wiring an LED strip into an amp?
  85. Need a bit more power :)
  86. yaqin 100b kt88-98 bulb blown and smoking coming from the amp
  87. Amp. 2x5W RV12 P2000driver RL12 P10 final
  88. Layout challange: Dual Maggie AMP148 based.
  89. Replacement PT question
  90. Real Telefunken E88CC?
  91. Any audio differences for EL-84 P-P OPT?
  92. Need help identifying this amplifier.
  93. Can anyone identify this valve / tube?
  94. Pentode-like Triodes
  95. Telefunken EL156 SE experience
  96. Help with a Tubelab SE Power Supply Transformer
  97. 33:1 opt for 5:1 use?
  98. Siemens B30C600 selenium bridge rectifier
  99. ECC81 mu-follower problem
  100. Audio Note M7 line stage preaamp!
  101. Should I upgrade considering.....
  102. Using Wards SE EL84 Transformers for Decware Zenkit1
  103. Parts Box 300b
  104. TO-9105-1 Triodeelectronics output transformer
  105. Need help pairing Martin Logan Sequel II speakers with 4 Watt tube monoblocks
  106. What is your comment about akido linestage?
  107. Driving an EL34 amp without driver stage ?
  108. Mystery Telefunken T9 amp
  109. Improving preamp's bass response.
  110. EZ150
  111. Need help identifying baldwin tube amp
  112. 45 amp with 6N7
  113. Selecting 5881's question
  114. Schematic with ECC88
  115. PP Output Transformers
  116. Gas Tube Question (CK1006 Rectifier)
  117. Art Audio Quintet MK1 EL34 PP resistor value
  118. The Midlife Crisis - My 833C Amp Build
  119. Tube amp Building Compitition Interest check
  120. Found myself a Magnavox 9302-00
  121. DIY Stereo Amp 15-50wpc
  122. Gray Research AM-50
  123. Preamp Grounding and Hum
  124. What to do with AA-100 output iron
  125. Flat screen t.v. and tube amps?
  126. 12AX7 Plate Current vs. HT Voltage
  127. Hammond A0-29 project organ amp
  128. Need help with Phono preamp build with microcontroller relay switching
  129. CCS fixed bias
  130. Gerber file help!!!!!!!
  131. Finally real inductance of a grid resistor...
  132. 12B4 vs. 12B4A
  133. Simple hybrid amplifier
  134. VTL Stereo 50
  135. Distributed volume pot
  136. DHT fixed bias schematic
  137. Wiring a power transformer
  138. What can I do with these tubes?
  139. RCA SP-20 circuit question.
  140. Magnavox Model 1ST525A
  141. LD91 signature power transformer wires Help?
  142. Effect of Regulated DC Filament Supply
  143. D3a-300b amp help!
  144. Need Schematic for this GE Console fast.
  145. Sound experiences 6SN7
  146. EL152 maximum operating settings?
  147. OMG just scored a huge lot of Nos/Nib tube lot for $20
  148. Help with DN2540 CCS design
  149. Strange problem with Caps not blocking DC
  150. Help and suggestions for My Phono and pre amp
  151. PCB and transformer placing and shielding
  152. MC-40 bias current?
  153. Gyrator on ccs-tailed LTP?
  154. capacitor polarity on a VM 20050 amp
  155. Choke? Where to begin?
  156. H11F1 Switching in tube circuits
  157. cooling traditional E-core iron transformers
  158. New vacuum-tube preamp-project!
  159. DIY tube tester
  160. NABU TuneLabSE Buildup
  161. I just inherited a TON of tubes and tube amp components.
  162. Filament Transformer Question ?
  163. Low gain in Heathkit SA-2 phonostage
  164. speakers for leak tl12+
  165. LM3875 + Broskie Cathode Follower. (PICS)
  166. Has anyone built Andrea Ciuffolis Phono End ?
  167. tube substitute
  168. Motorcapacitors in high volt. power supplies?
  169. Troughline, Stereo 20, Technics 1200.Unhappy!
  170. Troughline, Stereo 20, Technics 1200.Unhappy!
  171. Volume potentiometer: the best way to do it...
  172. KT120 "triode" and Hammond 1650N
  173. Tubecad SE Amp Cad
  174. 5702wb
  175. Does anyone know of a company that makes circular risers for tubes?
  176. Negative feedback to differential pair driver
  177. 6L6 UL Power
  178. Bench Power Supply: What to look for ? Which one to get ?
  179. Bevois Valley EL84 PP - distortion in one channel
  180. good by til next winter
  181. PSUD Questions
  182. Power Transformer Wiring Question ?
  183. Fisher 500C C82/C84 ceramic capacitor function
  184. Tubes to first taker
  185. Neutral wired to chassis, how to add a 3-prong cord?
  186. Heater Transformer - too much voltage
  187. Capacitor value
  188. WD KT88
  189. Ultimate spud amp - any ideas ?
  190. Please Critique My Grounding Scheme
  191. negative voltage drop across a diode
  192. 1.5K 200W output transformers? What tubes?
  193. 50 Type Tube
  194. "12SR7 Starving Student" plays extremly quiet
  195. questions about some sim software
  196. Drive
  197. 4xKT88 into Hammond 1650T, what am I missing?
  198. double mono SE
  199. Two electrolytic cap selection questions
  200. Could This Be the Future of Vacuum Tubes?
  201. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  202. Rydel's triode model coefficients
  203. 2E26 Options
  204. Loud Popping Dynaco ST-70
  205. Are these EL34's good?
  206. Amp schematic for Sovtek/Svetlana tubes
  207. KT66 power tube amplifier
  208. 6П3С Plate Voltage
  209. Help choosing which Amplifier to build
  210. need help choosing between two amp schems
  211. 100 W-class Circlotron
  212. How can i match power tubes for Transconductance ?
  213. ef89 ef86
  214. ecc82 5687 preamp! audionote
  215. Hammond transformer questions
  216. IXYS CP20M45 IXC - anyone come across them ?
  217. Good Source for Nice Analog Panel Ammeters for 833C Build?
  218. Restore or build from new?
  219. Bob Danielak 826 Amp?
  220. Newbie Tube Power Supply
  221. What shall I build/do with this lot of tubes?
  222. Gingertubes ecl86 amp build
  223. DC restorer
  224. ECF801 Triode/Pentode any useful application ?
  225. Baking Tubes Procedure - Help...
  226. AVO VCM-163 Tube tester problem
  227. ECC82 normal vs ECC82 long plate
  228. 45 Type Push/Pull Amps
  229. leak tl12+
  230. Triode for 60V
  231. Tube Sound Processor
  232. McIntosh MC-275 buy or build an auto-bias tube amp?
  233. slp-90 clone, decent preamp!
  234. Triode St70 with hum
  235. SSR switching HT transformer?
  236. Tube Flash Drive
  237. 6S31B-P Grid current
  238. Tube Op Amp Building Blocks
  239. knight kb-85 restoration/mod
  240. Acceptable Power Supply Noise Limits?
  241. Loadlines and Microsoft Paint
  242. aikido noval all in one caps upgrade
  243. Specific grid stopper question
  244. GU50 Screen Driven, DC Coupled
  245. April fool?
  246. Providing both balanced and unbalanced inputs
  247. Best triode section inside ecc81 tube?
  248. opt for 45 tube
  249. Designing an Interstage Transformer
  250. Tube Amplifier Builder's Competition

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