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  1. input selector switch replacement help
  2. help needed with transformer wiring
  3. Tube Schematic Drawig Packages
  4. 12AU7 - 5V4G easy amplifier
  5. Glassware CCA 9-pin PDF
  6. Replacement for the tube 6922 (ECC88)?
  7. Which probes for my first scope?
  8. PP CATHODE BIAS WITH "CCS"
  9. current output tube amplifier
  10. Tube amp for a small room (newbie-like)
  11. What is this old thing from1929?
  12. Arduino cathode current HT etc
  13. Bizzare Output Transformer Connectivity...
  14. OPT to KT88?
  15. Help needed on identifing tube
  16. Amplifier circuit from tube radio
  17. Amplifier circuit from tube radio
  18. Using Valves Library in EAGLE CAD
  19. Biggest noval power pentode?
  20. Akita 12V preamp thoughts
  21. Help, what is this (Marconi 6204) ?
  22. Anyone try DHT 33 or 1Q5 Pentodes wired as Triode?
  23. Would this be a good buy?
  24. Looking for a complete DIY Tube amp
  25. Schematic by TS LIM Pre-amp
  26. Fisher Model 100 'AZ' Mono Amp Rebuild w/ Oscillations
  27. Measuring inductance
  28. Leak stereo 20
  29. Gain and gm of a QQE03/20 anyone ??
  30. Power supply options for tube amplifiers.
  31. CCS question mA
  32. Help wanted with testing and finetuning.
  33. YAQIN VK2100 pre amp
  34. Identify record player and valve
  35. AC Line Filter
  36. blue flash inside 5Y3GT
  37. Heater-Cathode Leakage
  38. Old Tube Kit
  39. Point to Point SET KT88/6550 Build
  40. D3a - MOSFET HYBRID CIRCLOTRON
  41. Aikido CCDA
  42. output impedance
  43. Bizzaro fix for hum problem needs explanation! Pretty Please
  44. Bizzaro fix for hum problem needs explanation! Pretty Please
  45. Questions regarding first build - K-502
  46. Good tube tech in Brooklyn NYC?
  47. Looking for LTspice tube models
  48. Audio Research SP15 : faulty phono stage
  49. Spark 810 looking for the diagram
  50. HP 8903B Question ?
  51. 1955 Hammond Organ Tube Amp
  52. Suggestions Please
  53. Croft Series 4 PL519 regulator
  54. Rectifier ID
  55. Adding headphone output to Darling amp
  56. CLC vs CLCLC Filter Power Supply
  57. Where to get Vacuum Tube Valley magazine?
  58. Magnavox 8802 HELP!!!
  59. Vaa for KT120
  60. Tubes in a Home Theater?
  61. Yaqin mc 10l tube risers?
  62. Wiring an LED strip into an amp?
  63. Need a bit more power :)
  64. yaqin 100b kt88-98 bulb blown and smoking coming from the amp
  65. Amp. 2x5W RV12 P2000driver RL12 P10 final
  66. Layout challange: Dual Maggie AMP148 based.
  67. Replacement PT question
  68. Real Telefunken E88CC?
  69. Any audio differences for EL-84 P-P OPT?
  70. Need help identifying this amplifier.
  71. Can anyone identify this valve / tube?
  72. Pentode-like Triodes
  73. Telefunken EL156 SE experience
  74. Help with a Tubelab SE Power Supply Transformer
  75. 33:1 opt for 5:1 use?
  76. Siemens B30C600 selenium bridge rectifier
  77. ECC81 mu-follower problem
  78. Audio Note M7 line stage preaamp!
  79. Should I upgrade considering.....
  80. Using Wards SE EL84 Transformers for Decware Zenkit1
  81. Parts Box 300b
  82. TO-9105-1 Triodeelectronics output transformer
  83. Need help pairing Martin Logan Sequel II speakers with 4 Watt tube monoblocks
  84. What is your comment about akido linestage?
  85. Driving an EL34 amp without driver stage ?
  86. Mystery Telefunken T9 amp
  87. Improving preamp's bass response.
  88. EZ150
  89. Need help identifying baldwin tube amp
  90. 45 amp with 6N7
  91. Selecting 5881's question
  92. Schematic with ECC88
  93. PP Output Transformers
  94. Gas Tube Question (CK1006 Rectifier)
  95. Art Audio Quintet MK1 EL34 PP resistor value
  96. The Midlife Crisis - My 833C Amp Build
  97. Tube amp Building Compitition Interest check
  98. Found myself a Magnavox 9302-00
  99. DIY Stereo Amp 15-50wpc
  100. Gray Research AM-50
  101. Preamp Grounding and Hum
  102. What to do with AA-100 output iron
  103. Flat screen t.v. and tube amps?
  104. 12AX7 Plate Current vs. HT Voltage
  105. Hammond A0-29 project organ amp
  106. Need help with Phono preamp build with microcontroller relay switching
  107. CCS fixed bias
  108. Gerber file help!!!!!!!
  109. Finally real inductance of a grid resistor...
  110. 12B4 vs. 12B4A
  111. Simple hybrid amplifier
  112. VTL Stereo 50
  113. Distributed volume pot
  114. DHT fixed bias schematic
  115. Wiring a power transformer
  116. What can I do with these tubes?
  117. RCA SP-20 circuit question.
  118. Magnavox Model 1ST525A
  119. LD91 signature power transformer wires Help?
  120. Effect of Regulated DC Filament Supply
  121. D3a-300b amp help!
  122. Need Schematic for this GE Console fast.
  123. Sound experiences 6SN7
  124. EL152 maximum operating settings?
  125. OMG just scored a huge lot of Nos/Nib tube lot for $20
  126. Help with DN2540 CCS design
  127. Strange problem with Caps not blocking DC
  128. Help and suggestions for My Phono and pre amp
  129. PCB and transformer placing and shielding
  130. MC-40 bias current?
  131. Gyrator on ccs-tailed LTP?
  132. capacitor polarity on a VM 20050 amp
  133. Choke? Where to begin?
  134. H11F1 Switching in tube circuits
  135. cooling traditional E-core iron transformers
  136. New vacuum-tube preamp-project!
  137. DIY tube tester
  138. NABU TuneLabSE Buildup
  139. I just inherited a TON of tubes and tube amp components.
  140. Filament Transformer Question ?
  141. Low gain in Heathkit SA-2 phonostage
  142. speakers for leak tl12+
  143. LM3875 + Broskie Cathode Follower. (PICS)
  144. Has anyone built Andrea Ciuffolis Phono End ?
  145. tube substitute
  146. Motorcapacitors in high volt. power supplies?
  147. Troughline, Stereo 20, Technics 1200.Unhappy!
  148. Troughline, Stereo 20, Technics 1200.Unhappy!
  149. Volume potentiometer: the best way to do it...
  150. KT120 "triode" and Hammond 1650N
  151. Tubecad SE Amp Cad
  152. 5702wb
  153. Does anyone know of a company that makes circular risers for tubes?
  154. Negative feedback to differential pair driver
  155. effects send and/or preamp out jack on guitar amps
  156. 6L6 UL Power
  157. Bench Power Supply: What to look for ? Which one to get ?
  158. Bevois Valley EL84 PP - distortion in one channel
  159. good by til next winter
  160. PSUD Questions
  161. Power Transformer Wiring Question ?
  162. Fisher 500C C82/C84 ceramic capacitor function
  163. Tubes to first taker
  164. Neutral wired to chassis, how to add a 3-prong cord?
  165. Heater Transformer - too much voltage
  166. Capacitor value
  167. WD KT88
  168. Ultimate spud amp - any ideas ?
  169. Please Critique My Grounding Scheme
  170. negative voltage drop across a diode
  171. 1.5K 200W output transformers? What tubes?
  172. 50 Type Tube
  173. "12SR7 Starving Student" plays extremly quiet
  174. questions about some sim software
  175. Drive
  176. 4xKT88 into Hammond 1650T, what am I missing?
  177. double mono SE
  178. Two electrolytic cap selection questions
  179. Could This Be the Future of Vacuum Tubes?
  180. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  181. Rydel's triode model coefficients
  182. 2E26 Options
  183. Loud Popping Dynaco ST-70
  184. Are these EL34's good?
  185. Amp schematic for Sovtek/Svetlana tubes
  186. KT66 power tube amplifier
  187. 6П3С Plate Voltage
  188. Help choosing which Amplifier to build
  189. need help choosing between two amp schems
  190. 100 W-class Circlotron
  191. How can i match power tubes for Transconductance ?
  192. ef89 ef86
  193. ecc82 5687 preamp! audionote
  194. Hammond transformer questions
  195. IXYS CP20M45 IXC - anyone come across them ?
  196. Good Source for Nice Analog Panel Ammeters for 833C Build?
  197. Restore or build from new?
  198. Bob Danielak 826 Amp?
  199. Newbie Tube Power Supply
  200. What shall I build/do with this lot of tubes?
  201. Gingertubes ecl86 amp build
  202. DC restorer
  203. ECF801 Triode/Pentode any useful application ?
  204. Baking Tubes Procedure - Help...
  205. AVO VCM-163 Tube tester problem
  206. ECC82 normal vs ECC82 long plate
  207. 45 Type Push/Pull Amps
  208. leak tl12+
  209. Triode for 60V
  210. Tube Sound Processor
  211. McIntosh MC-275 buy or build an auto-bias tube amp?
  212. slp-90 clone, decent preamp!
  213. Triode St70 with hum
  214. SSR switching HT transformer?
  215. Tube Flash Drive
  216. 6S31B-P Grid current
  217. Tube Op Amp Building Blocks
  218. knight kb-85 restoration/mod
  219. Acceptable Power Supply Noise Limits?
  220. Loadlines and Microsoft Paint
  221. aikido noval all in one caps upgrade
  222. Specific grid stopper question
  223. GU50 Screen Driven, DC Coupled
  224. April fool?
  225. Providing both balanced and unbalanced inputs
  226. Best triode section inside ecc81 tube?
  227. opt for 45 tube
  228. Designing an Interstage Transformer
  229. Tube Amplifier Builder's Competition
  230. testing tubes for shorts
  231. Tube kits
  232. GU29 PP Amplifier
  233. 1625 tube radio?
  234. Measuring volts on an unloaded PSU secondary
  235. Suggest a preamp project for me.
  236. Audio Magazine
  237. Jadis DA88S schematic
  238. clone jadis jp200 preamp
  239. GROMMES LJ5
  240. Altec 1570B Feedback
  241. rebuilding 3tube zenith amp
  242. Effect of lower G2, EL84 PP
  243. Phono connection for pioneer sx34b
  244. Low output from two 6L6's for no apparent reason?
  245. Preamp design ok?
  246. GZ34 base?
  247. Tube Technology Genesis 100w monoblock manual?
  248. 6SN7 & 6V6 Push Pull - increase gain
  249. screen grid resistor value
  250. KT88 design questions

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