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  1. Help ID this tube ^&$**@# lettering!
  2. Adding a db VU meter to an existing tube mic pre
  3. Quad 22 interstage cap?
  4. 4P1L triode PP (40W!!?)
  5. KT88 shootout vintage vs new vs 90
  6. Help needed to identify this british made Amp
  7. PSU II Question
  8. Quality tube buffer with ECC83
  9. K12g Amp Question
  10. Stark 9-66 tube tester - repair help
  11. output transfo problem
  12. Pair of Fisher CA-40 Oddballs
  13. Model 601 tube amp.
  14. Model 601 Tube amp
  15. First power amp build. Is this normal??
  16. Compactronized 6146
  17. Preamp and inverter on B7G base tubes circuit.
  18. Advice and Suggestions on Amp designs
  19. Help who tube buffer x10-d
  20. EL803S-6CW5 / EL86 amp design check (schematic attached)
  21. amp buzz in one channel on inrush / power on
  22. SE 8-10W monoblock build help
  23. GlassWare Tube CAD
  24. SMD Parts and the DIYer
  25. 6CW5 / EL86 operating point
  26. RH84 power output
  27. 6n6p-ir
  28. Transformer bubbling
  29. Crackling noise.... pls help on Pre-amp
  30. RH84 amp. Plate is 300V. What voltage...
  31. Amplificator Class A 2 X EL504
  32. Help in testing 12ax7 and 7869 tubes
  33. Micro-Cap Tubes Parameters question
  34. Cathode Bypass Capacitor
  35. NOOB ALERT! sooo omany questions.....
  36. IS THIS A REAL E810F ???
  37. Chassis design question / cooling of small signal valves
  38. 5 leads pp output transformer
  39. Vote and Comment: SRPP vs. Aikido vs. Grounded Grid
  40. NEED ADVICE ON THIS SCHEMATIC AND WILL IT WOFK
  41. Help Identifying a Console Pull Amplifier
  42. sunaudio 2A3 circuit...is it good for newbie?
  43. KT120: When does it starts to sing ?
  44. Simple Time Delay (no more excuses for not having one)
  45. Cary SLP-05
  46. 6SN7 Grounded Grid
  47. input selector switch replacement help
  48. help needed with transformer wiring
  49. Tube Schematic Drawig Packages
  50. 12AU7 - 5V4G easy amplifier
  51. Glassware CCA 9-pin PDF
  52. Replacement for the tube 6922 (ECC88)?
  53. Which probes for my first scope?
  54. PP CATHODE BIAS WITH "CCS"
  55. current output tube amplifier
  56. Tube amp for a small room (newbie-like)
  57. What is this old thing from1929?
  58. Arduino cathode current HT etc
  59. Bizzare Output Transformer Connectivity...
  60. OPT to KT88?
  61. Help needed on identifing tube
  62. Amplifier circuit from tube radio
  63. Amplifier circuit from tube radio
  64. Using Valves Library in EAGLE CAD
  65. Biggest noval power pentode?
  66. Akita 12V preamp thoughts
  67. Help, what is this (Marconi 6204) ?
  68. Anyone try DHT 33 or 1Q5 Pentodes wired as Triode?
  69. Would this be a good buy?
  70. Looking for a complete DIY Tube amp
  71. Schematic by TS LIM Pre-amp
  72. Fisher Model 100 'AZ' Mono Amp Rebuild w/ Oscillations
  73. Measuring inductance
  74. Leak stereo 20
  75. Gain and gm of a QQE03/20 anyone ??
  76. Power supply options for tube amplifiers.
  77. CCS question mA
  78. Help wanted with testing and finetuning.
  79. YAQIN VK2100 pre amp
  80. Identify record player and valve
  81. AC Line Filter
  82. blue flash inside 5Y3GT
  83. Heater-Cathode Leakage
  84. Old Tube Kit
  85. Point to Point SET KT88/6550 Build
  86. D3a - MOSFET HYBRID CIRCLOTRON
  87. Aikido CCDA
  88. output impedance
  89. Bizzaro fix for hum problem needs explanation! Pretty Please
  90. Bizzaro fix for hum problem needs explanation! Pretty Please
  91. Questions regarding first build - K-502
  92. Good tube tech in Brooklyn NYC?
  93. Looking for LTspice tube models
  94. Audio Research SP15 : faulty phono stage
  95. Spark 810 looking for the diagram
  96. HP 8903B Question ?
  97. 1955 Hammond Organ Tube Amp
  98. Suggestions Please
  99. Croft Series 4 PL519 regulator
  100. Rectifier ID
  101. Adding headphone output to Darling amp
  102. CLC vs CLCLC Filter Power Supply
  103. Where to get Vacuum Tube Valley magazine?
  104. Magnavox 8802 HELP!!!
  105. Vaa for KT120
  106. Tubes in a Home Theater?
  107. Yaqin mc 10l tube risers?
  108. Wiring an LED strip into an amp?
  109. Need a bit more power :)
  110. yaqin 100b kt88-98 bulb blown and smoking coming from the amp
  111. Amp. 2x5W RV12 P2000driver RL12 P10 final
  112. Layout challange: Dual Maggie AMP148 based.
  113. Replacement PT question
  114. Real Telefunken E88CC?
  115. Any audio differences for EL-84 P-P OPT?
  116. Need help identifying this amplifier.
  117. Can anyone identify this valve / tube?
  118. Pentode-like Triodes
  119. Telefunken EL156 SE experience
  120. Help with a Tubelab SE Power Supply Transformer
  121. 33:1 opt for 5:1 use?
  122. Siemens B30C600 selenium bridge rectifier
  123. ECC81 mu-follower problem
  124. Audio Note M7 line stage preaamp!
  125. Should I upgrade considering.....
  126. Using Wards SE EL84 Transformers for Decware Zenkit1
  127. Parts Box 300b
  128. TO-9105-1 Triodeelectronics output transformer
  129. Need help pairing Martin Logan Sequel II speakers with 4 Watt tube monoblocks
  130. What is your comment about akido linestage?
  131. Driving an EL34 amp without driver stage ?
  132. Mystery Telefunken T9 amp
  133. Improving preamp's bass response.
  134. EZ150
  135. Need help identifying baldwin tube amp
  136. 45 amp with 6N7
  137. Selecting 5881's question
  138. Schematic with ECC88
  139. PP Output Transformers
  140. Gas Tube Question (CK1006 Rectifier)
  141. Art Audio Quintet MK1 EL34 PP resistor value
  142. The Midlife Crisis - My 833C Amp Build
  143. Tube amp Building Compitition Interest check
  144. Found myself a Magnavox 9302-00
  145. DIY Stereo Amp 15-50wpc
  146. Gray Research AM-50
  147. Preamp Grounding and Hum
  148. What to do with AA-100 output iron
  149. Flat screen t.v. and tube amps?
  150. 12AX7 Plate Current vs. HT Voltage
  151. Need help with Phono preamp build with microcontroller relay switching
  152. CCS fixed bias
  153. Gerber file help!!!!!!!
  154. Finally real inductance of a grid resistor...
  155. 12B4 vs. 12B4A
  156. Simple hybrid amplifier
  157. VTL Stereo 50
  158. Distributed volume pot
  159. DHT fixed bias schematic
  160. Wiring a power transformer
  161. What can I do with these tubes?
  162. RCA SP-20 circuit question.
  163. Magnavox Model 1ST525A
  164. LD91 signature power transformer wires Help?
  165. Effect of Regulated DC Filament Supply
  166. D3a-300b amp help!
  167. Need Schematic for this GE Console fast.
  168. Sound experiences 6SN7
  169. EL152 maximum operating settings?
  170. OMG just scored a huge lot of Nos/Nib tube lot for $20
  171. Help with DN2540 CCS design
  172. Strange problem with Caps not blocking DC
  173. Help and suggestions for My Phono and pre amp
  174. PCB and transformer placing and shielding
  175. MC-40 bias current?
  176. Gyrator on ccs-tailed LTP?
  177. capacitor polarity on a VM 20050 amp
  178. Choke? Where to begin?
  179. H11F1 Switching in tube circuits
  180. cooling traditional E-core iron transformers
  181. New vacuum-tube preamp-project!
  182. DIY tube tester
  183. NABU TuneLabSE Buildup
  184. I just inherited a TON of tubes and tube amp components.
  185. Filament Transformer Question ?
  186. Low gain in Heathkit SA-2 phonostage
  187. speakers for leak tl12+
  188. LM3875 + Broskie Cathode Follower. (PICS)
  189. Has anyone built Andrea Ciuffolis Phono End ?
  190. tube substitute
  191. Motorcapacitors in high volt. power supplies?
  192. Troughline, Stereo 20, Technics 1200.Unhappy!
  193. Troughline, Stereo 20, Technics 1200.Unhappy!
  194. Volume potentiometer: the best way to do it...
  195. KT120 "triode" and Hammond 1650N
  196. Tubecad SE Amp Cad
  197. 5702wb
  198. Does anyone know of a company that makes circular risers for tubes?
  199. Negative feedback to differential pair driver
  200. 6L6 UL Power
  201. Bench Power Supply: What to look for ? Which one to get ?
  202. Bevois Valley EL84 PP - distortion in one channel
  203. good by til next winter
  204. PSUD Questions
  205. Power Transformer Wiring Question ?
  206. Fisher 500C C82/C84 ceramic capacitor function
  207. Tubes to first taker
  208. Neutral wired to chassis, how to add a 3-prong cord?
  209. Heater Transformer - too much voltage
  210. Capacitor value
  211. WD KT88
  212. Ultimate spud amp - any ideas ?
  213. Please Critique My Grounding Scheme
  214. negative voltage drop across a diode
  215. 1.5K 200W output transformers? What tubes?
  216. 50 Type Tube
  217. "12SR7 Starving Student" plays extremly quiet
  218. questions about some sim software
  219. Drive
  220. 4xKT88 into Hammond 1650T, what am I missing?
  221. double mono SE
  222. Two electrolytic cap selection questions
  223. Could This Be the Future of Vacuum Tubes?
  224. Thermography on 6C33C/6C18C aka. 6S33S/6S18S
  225. Rydel's triode model coefficients
  226. 2E26 Options
  227. Loud Popping Dynaco ST-70
  228. Are these EL34's good?
  229. Amp schematic for Sovtek/Svetlana tubes
  230. KT66 power tube amplifier
  231. 6П3С Plate Voltage
  232. Help choosing which Amplifier to build
  233. need help choosing between two amp schems
  234. 100 W-class Circlotron
  235. How can i match power tubes for Transconductance ?
  236. ef89 ef86
  237. ecc82 5687 preamp! audionote
  238. Hammond transformer questions
  239. IXYS CP20M45 IXC - anyone come across them ?
  240. Good Source for Nice Analog Panel Ammeters for 833C Build?
  241. Restore or build from new?
  242. Bob Danielak 826 Amp?
  243. Newbie Tube Power Supply
  244. What shall I build/do with this lot of tubes?
  245. Gingertubes ecl86 amp build
  246. DC restorer
  247. ECF801 Triode/Pentode any useful application ?
  248. Baking Tubes Procedure - Help...
  249. AVO VCM-163 Tube tester problem
  250. ECC82 normal vs ECC82 long plate

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