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  1. Curtis Mathes Console / TV receiver
  2. Marantz 8b feedback circuit
  3. Noisy volume pot with some tubes but not others
  4. Found an Eico HF-86 for sale, is it worth it?
  5. Paco T-60 Tube Tester
  6. Aikido all in one heater issue
  7. Need a little help with Chinese tube Preamp
  8. Choke Loaded Const. Current Draw Amp
  9. 6550 SINGLE-ENDED AMPLIFIER
  10. Balancing pp driver stage
  11. P-P 6C33
  12. Need help with Cornet 2
  13. Sweet folly: a tube SMPS
  14. More articles for the Wireless World Archive
  15. Recommendations for a valve amp kit
  16. 2 watt amplifier
  17. 1AX7
  18. 2 x 6as7 -> u=?
  19. Help with transformer
  20. Building a mu-follower stage
  21. ecl11 - ecl86 replacement
  22. Please comment on this grounding scheme.
  23. A tube-preamp with DSP-DAC-Touchscreen-and Music Streaming...
  24. Microphone modification help
  25. Microphone modification help
  26. First time hearing an SET
  27. Rattle can a power transformer
  28. Need better RIAA circuit for my phono amp.
  29. Input volume pot wiring
  30. Constant current heating undervoltage
  31. Some tube info that I hope is helpful
  32. Toroidal output transormers
  33. cathode bypass on opt secondary
  34. Push Pull Powersupply Test Question?
  35. Recommandation please..
  36. My new humble thread
  37. KT88 single stage pp - cascode diff amp
  38. foot switch safety question
  39. Which KT88 Brand to Buy?Sso many to choose
  40. 12ax7 perfect bias point
  41. preamplifier/driver for 807
  42. Help with Quad II hum
  43. 18K audio note output transformer
  44. Small tube amp conversion help 6x4, 6AU6, 6AQ5
  45. Hybrid never see
  46. "Next to Last" PAS Project
  47. Power supply overload
  48. Home build 6L6 pp amp buzzing noise
  49. 807 monoblocks with big PSU
  50. SET amps and crossovers.....?
  51. Sockets for 6P41S
  52. 6dj8 phono amp
  53. Jolida Score!!!!
  54. voltage boost
  55. Swinging choke value in PSUD
  56. Hum Nirvana
  57. Plates glowing on my Fender Concert after blowing fuse
  58. This weekend's reading
  59. 6550-6550A-6550B-6550C - What are exactly Differences ??
  60. Interstage Transformer Questions
  61. Vacuum State FVP5A voltages
  62. can you help me out? Sencore TC114 tube tester
  63. Steve Bench's tube crossover - Help needed.
  64. transformer design equations
  65. Retrofit idea, need advice, 6L6SE guitar amp
  66. some misc schematics, manley, rotel
  67. What happened to my tube??
  68. Tube Preamp Question
  69. Schematic for Pilot SP215
  70. Screen current through cathode resistors
  71. Gyrator design
  72. Any tips for routing heaters on a PCB
  73. 6EZ5 as drop in replacement for 6V6 tube?
  74. RIAA Preamp and equalization 12AX7
  75. Correct hum mods?
  76. Push-Pull from Stereo SE amp
  77. how to select transformers.
  78. Ultrapath or parallel feed apps. for 7591 amps?
  79. PP-UL amp with KT88
  80. Reuse these sockets and tube choice question
  81. Need help understanding this circuit
  82. Need a little help with a power supply I designed.
  83. Which tube Rectifier is good enough for 5902 tube amp ?
  84. Schematic for Masco ME-8?
  85. Transformer Rattle & Hum issue - Dynakit ST-70
  86. pio coupling caps - damaged/used?
  87. 6EZ8 (and other triple triodes) help please!
  88. Akron, Ohio
  89. 6N6P Heater and earth wiring advice
  90. united transformer corporation
  91. Capacitive v. Inductive inter-stage coupling
  92. unused secondaries on SE opt?
  93. Marco Rodint coil building info needed
  94. Scott 222B Hum
  95. how to make audio output transformer
  96. 5842 Anyone?
  97. 813 SE build
  98. Aikido LV improved psu
  99. My first HiFi project
  100. B&O 608 tube amplifier
  101. Just designed a 300b amplifier....
  102. Anyone used C3g to drive GM70?
  103. Capacitors found, have you used these?
  104. I need your help!!!!!
  105. 12au7 600 ohm output
  106. new C3g/211PSE comments pls
  107. anyone know of a source for 12 pin+ connectors?
  108. Dynaco Mark IV Power Resistor
  109. Moondog with ac on gain & driver tubes?
  110. need help again on DIY Toccata MC Phono preamp
  111. Looking for analog Tube schematic for "analogmetric 1541a" DAC
  112. newbie needs help with tube inheritance
  113. 2A3 SETs with Edcor Iron
  114. What to do with this iron (originally from PP 7355)
  115. Just for everyone's amusement....
  116. beam tetrode calculations
  117. What are the differences between LC and CLC chokes
  118. gain and mid circuits
  119. Kay 503 Schematics?
  120. Transformer Data
  121. tube B 406 triode dick's cleo 4
  122. GE Snubber, High Current DC, and Switching Capacitors
  123. Russian EL84 - Many varieties
  124. Back From the Dead- A NOS Tube Story
  125. application for ccs/gyrator board from the groupbuy
  126. Building a tube radio
  127. Three more articles for the WW Archive
  128. Amplifier antics
  129. what about a tube makes it UL recommended
  130. 6as7 p-p with transformer phase-splitter
  131. Large power push pull output transformers, say 150W
  132. I need a schematic for a amp project
  133. Preamp resistors calculation for http://www.shine7.com
  134. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  135. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  136. Vintage tubes
  137. Amp PSU standby and PA switching
  138. 245 tubes
  139. Vacuum tube clock radio
  140. First Project, need some help
  141. Graetz Scerzo Schematic
  142. simple se 2a3 amp help!!!!!
  143. 5bc3 rectifier
  144. Help me improve this PSU. (6c33 set, voltage doubler)
  145. Choke Loaded Driver Load Lines Question
  146. CCS and tube aging
  147. Tetra lives!!!!!
  148. Tube shops/supplies in Brisbane/Gold Coast
  149. AC VT25 filament?
  150. Let's show go on: Building Monster SE!
  151. Mystery 6AQ5A powered chassis?
  152. 6Y6G tube for low-voltage SE amplifier?
  153. Jolida gain and negative feedback?
  154. 1/2 of the tube for each channel?
  155. Problem with Legacy pentode driver stage
  156. 845 Operating Point
  157. Tube rectifiers
  158. D76 Inrush current limiter thermistor?
  159. New to Tubes? How to get the basics, read on..
  160. interstage tansformer impedence
  161. 2 PSU sharing the same Power transformer?
  162. Biasing amp
  163. CCS placement
  164. clueless on console
  165. 5E3 Build Problems Cont'd
  166. Popping in stepped volume control
  167. 6by5 CRC Values
  168. Is this do-able?
  169. PCB for Gary Pimm's CCS & SS Pentode
  170. EL86 Single Ended PP Power Amplifier
  171. Diyhifisupply Billies - dead OPTs?
  172. 6H30P-DR
  173. Tube AMP and stax headphones....
  174. soft start power supply for dynaco st-70
  175. The Telefunken EF86?
  176. Can you run parallel circuits from a rectifier?
  177. Mullard 5-20 with 6L6GC's?
  178. Adding balanced input to 6N1P tube.
  179. Partial feedback (anode grid) with cathode follower
  180. 4P1L as First gain stage or in Pre-Amp..?
  181. Advice on 6418 design requested
  182. Shorting jumpers for octal sockets
  183. Tube lineup in an Admiral y4302
  184. John Broskie MIA?
  185. Audio Research VT 100 MKII need help!!
  186. Help with AD30 PSU build
  187. Who was the Japanese Amp Guru?
  188. 6922 vs an ECC82.....a test.
  189. Triode connected 6LW6 for SE
  190. 12AD7???
  191. New Book Review
  192. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  193. looking for hi volt commercial power supplies
  194. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  195. ECC85
  196. Pioneer 304B fm/am reciever schematic
  197. ECC82 JJ Made in Slovak Republic!?
  198. Definition of matched
  199. Polycarbonate as coupling caps?
  200. pick tubes for tubecad unbalancer
  201. OPT for EL34
  202. 12v dc tube amp/pre high SQ
  203. Better than 12au7?
  204. Amps and 4-ohm loads
  205. What is the "best" tube amp / speaker / source you have ever used?
  206. 814 as Triode / Max. Ug2 voltage
  207. valves better than solid state?
  208. musical fidelity x10d clone
  209. Acrosound 7591A amp
  210. suggestions for simple amp wanted
  211. Wish you could nail down your copper wool holder?
  212. HELP- Pricing Genuine Genalex KT77's
  213. K120 on 6550/KT88/KT90 anyone tried???
  214. do tubes ever leak b+ into heaters?
  215. How can I use these high-current, low-inductance chokes?
  216. 6005w Q+introduction
  217. Sonic Frontiers Line 3 Increate the Output Voltage
  218. Dynaco ST-70 chassis
  219. Opinion on the scheme with the 12AX7!
  220. Fully Parametric Tube EQ (with gyrators)
  221. 600v snap-in electrolytics
  222. anyone knows of 6 channel tube amplier ?
  223. 6N6P SE idea
  224. EL84
  225. Long tails and current sources
  226. How to reduce gain in mu-follower?
  227. Chassis
  228. Single Ended Amplifier 6P43P
  229. 6C33C spacing
  230. A very excitable Luminescence
  231. KT-88 Data sheet question.
  232. Good 12ax7
  233. Operating points theory...
  234. 1-stage (killer, literally) amp made of junk
  235. Two bridges and a CT transformer....
  236. What should clipping look like? (AKA reading sine waves)
  237. Combining coupling cap's
  238. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  239. 845 with kathode bias
  240. Mixing Resistor types?
  241. Looking for EI-75 80% perm ...
  242. Ambient temperature target
  243. Old radio
  244. JJ glowing twice as bright
  245. DPA150
  246. Discharging a capacitor - should I??
  247. German transformer builder
  248. 6P30B-V subminiature tube
  249. Improved Tube Headphones Amp
  250. Best method of reducing line voltage into vintage transformers?

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