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  1. Help! Tube Rolling
  2. Articles on Global Feedback
  3. Symetrical out low Zout
  4. Any Rimlock PCB sockets out there?
  5. 12SN7 Round Plate Tung Sol--is there such a thing?
  6. Vintage 2a3 tube amp
  7. Balance in CCS Long Tailed Pairs
  8. Audioromy 813 Mains Transformer
  9. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  10. use 120V x 2 for Aikido octal transformer?
  11. P-P O/P Trafo with only 2 tubes insead of 4?
  12. Eico HF-87 refurb
  13. Which SS CCS for the plate load on a 6N1P?
  14. Um, Can I do this?
  15. Eico power supply trouble (hlp plz)
  16. TV live regulator to tube preamp
  17. How to Spec Headphone output transformers
  18. Can I enlarge the mounting hole on Mosfet?
  19. Meng Yue 6P1
  20. Finding triode curves
  21. Critique my schematic 12ay7 linestage
  22. Suppresor Grid used for Feedback?
  23. Power Cascode
  24. Audio grade components
  25. Line Voltage with Yaqin MC-100B amp
  26. heater warmup and b+ delay
  27. BAL to UNBAL DAC buffer
  28. Counterpoint SA-7 - need a pic of the inside
  29. Are Chinese 6N2 the same as Russian 6N2P?
  30. New project; Musical Machine
  31. 4D32 SE amp, a few more questions
  32. Static shock with simple se
  33. Old electrolytic caps ok? MOSCODE 600
  34. Transformer Flux Band Tips and Tricks?
  35. What tube config will get this sound?
  36. On cleaning transformers
  37. My first project ELEKIT TU-870R
  38. DC7 MkII :New Schade 6080 amp.
  39. current driver tube amplifier
  40. A DC coupled headphones amp
  41. Ebay trader zhangsheng
  42. decware kits worth it?
  43. Simple test for transformer frequency response?
  44. Vacuum Tube Voltmeters
  45. Power Trans. Load Test
  46. Replacing Cap Across Filter Cap
  47. Regulate HV preamp with floating LM317?
  48. Rogers cadet 3
  49. Output impedance tap considerations.....
  50. Amp switch safety load
  51. MF X-10D replica problem
  52. Nice triode
  53. Low gain preamplifier
  54. Improving a Maple Tree Audio PS 2 power supply
  55. Baby Huey-ish phono?
  56. New? Local Feedback Method
  57. PSUD Help Needed: What value do I enter for current?
  58. Question on WE310
  59. How do you calculate choke size in a power supply?
  60. tubecad and tubecad se
  61. 300B amp Power Supply
  62. Adjustable internal Resonance?
  63. B+ Voltage sag for AB1 PP
  64. Maplin
  65. Preamp with an integrated amp
  66. First "boot" in 15 years
  67. Inherited these tubes. Anything interesting?
  68. What application for this tube?
  69. tantalum cap
  70. do I need to upgrade my heater supply to add another tube?
  71. Anyone have curves for a 2C52?
  72. tube-amplifier-shaped-usb-speaker
  73. pre-amp tubes: matching and care
  74. How to self taught about building tube amplifiers
  75. Any pretty good/bad chinese amps?
  76. Couple idiot questions....
  77. Looking for the triode mode of Z759
  78. Couple idiot questions....
  79. push pull 45
  80. Video of hum noise when I switch on the reverb of my Twin Amp
  81. 6sj7 spice model
  82. Help finding parallel 45 SE schematic
  83. filling in the low end, 6bq5 12ax7 circuitry
  84. Dynaco Mark VI
  85. Looking for Sonic Frontiers SFS80 Schematic
  86. CCS or V.REG for OP anode
  87. Yarland FV 34CIII
  88. Looking for OPT steel covers
  89. Damper diodes, center tapped heater, B+
  90. Dynaco ST-35 Newbie cathodyne question
  91. Anyone have valve/tube libraries for express PCB or PCB123?
  92. Looking for the Ultimate Aikido.
  93. CCS loaded DHT cathode follower?
  94. Phono stage with LT1028 MC input
  95. New valve int flash over why ?
  96. Sweep tube suggestions
  97. Amp project output problem
  98. 12AX7,6BQ5 PP Amp Search.
  99. Dynaco MkIII preamp/linestage recommendations?
  100. Can someone please check my PCB layout for this preamp?
  101. Bottlehead Filament Choke FC-1 for Push-Pull?
  102. Home James! But first, which transformer?
  103. NAD preamp = 6BQ5 Frankenschteen
  104. Wintersweet highvividity driver circuit
  105. Looking for TT11(CV1501) triode mode curve
  106. Amp switching with 4093/4066. How to add indicator LEDs?
  107. Yaqin MC-10L Blown Fuse
  108. 2a3 amp, progress picture
  109. How do I implement an AZ1 rec tube???
  110. Profit margin on used tube amps
  111. 300B sockets (different question)
  112. tri-amping question (s)
  113. Unity coupled power stage
  114. Acquired A Bunch Of Tubes
  115. Understanding load lines
  116. what would happen if.........?
  117. Testing valves/tubes
  118. 300b socket
  119. Vertical vs. Horizontal does it matter?
  120. Layout thoughts hmm....
  121. ID request, is this a pre?
  122. Anyone got any info on the Tippatone 500 watt amps?
  123. SMPS for Filaments?
  124. Using 6n6pi Push and Pull
  125. Optimum Tube Temperature
  126. Chassis
  127. 5670
  128. will this spice works in real word?
  129. An amplifier for Burning Man
  130. 12AT7,12AU7 Ultra linear cascode
  131. El Cheapo Grande
  132. EL84 Unused pins safe to connect?
  133. 6BQ5/EL84 tube buffer questions
  134. How much power do I need?
  135. Tube buffer/preamp. Where to place voltage divider?
  136. Schematic wanted for VTL Preamp "Maximal"
  137. modified GEC 88-50
  138. Zenith 7B31 Help
  139. Do swingers always buzz when they swing?
  140. 6at6 tube? What can i use it for?
  141. Sovtek 6550WA?
  142. how to make a tube gyrator eq?
  143. Transformer needed or "solid state guy needs help from tube guys"
  144. Differential input, SET output
  145. FFT of PSUD2 output?
  146. Differential push-pull design question
  147. Any EF184 users?
  148. 30P1S - How to use them?
  149. st-70 as good as it gets?
  150. Subbing in a TVC - input load Q
  151. Chinese tubes, new ones or relabeled?
  152. 6AV6 => 12AX7 question
  153. 845 & 300b tubes
  154. Sourcing sockets and plugs for power supply umbilicals
  155. Sub mini history question ...
  156. 6DX8 Amp for Headphones and Low Volume Needs
  157. Surplus Voltage Solution
  158. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  159. RCA mystery tube help
  160. Breadboarding/Prototyping - How to and Tips/Tricks
  161. Sub-Miniature Tubes - Low Voltage
  162. True direct-coupled PP amp
  163. "Radical" twist on an all DHT phonostage
  164. input tubes for 300b
  165. JE Labs simple 2a3 filiment tranny, 1 or 2?
  166. ebay Valve Preamps boards for 18 !
  167. Smoothing caps
  168. Spud issues - a little help, please
  169. GLY513 in PS of Simple SE / PP and OTL
  170. Has anyone here built something with this super triode?
  171. What is this part in old radio?
  172. Has anyone done anything with a 5977 sub-mini
  173. Driving EQ from kathode resistor
  174. Understanding CCS vs CVS
  175. Can you believe this!
  176. help with my humming valve amp
  177. Picking tubes for SimpleSE-ish amplifier
  178. 6gk5/ECC88 Phono any comments.
  179. Meng Yue X1 6P1 amp (NOT the mini)
  180. Basic HiFi Tube Amp Layout? Please?
  181. stupid switch question
  182. Max Current of James JS-6123HS Transformer
  183. How do you determine a driver stage?
  184. SUPER cheap nos tubes if you live in california.
  185. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  186. a good tube tester?
  187. Can't get adjustable reg to work
  188. 9 volt tube preamp.
  189. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  190. Equivalent to IXCP10M45S?
  191. Looking for non-DRD 300B using D3a as driver
  192. Akai M8 rebuild/restore/will-this-work?
  193. space charge 12fx8 amp or preamp schematic?
  194. Help with setup to trace UL curves
  195. My KT88 Williamson Amp Build
  196. UV 203A any good for audio ?
  197. What gives with this square wave?
  198. bottlehead paramour PT
  199. DC filament supply without electrolytic(s)?
  200. Looking for R Core power trafo and choke
  201. PP tube amp for bi-amping : above 400 hz
  202. 6N6P question
  203. Integrated valve amplifier : to buy or to build
  204. Lookin for an ST-70-like project
  205. Formula for Zout of diff pair
  206. 6SL7 and Crossovers
  207. Meng Yue: EL34 or 6P1?
  208. Power Transformers and chokes
  209. nos amperex authentic? label doesn't rub off
  210. Software analysis using tube analog circuit Audio Note Kit 1
  211. Webster Amps,Racine Wis.
  212. Help figuring out resistor values
  213. Small (Novel) Tube Rectifiers?
  214. Conrad Johnson ART preamp question.
  215. pd510
  216. i want to build 3D21WB tube PP amp
  217. How to choose an optimal load line for a cathode follwer buffer?
  218. removing sound controlls...
  219. Pentode cathode follower output impedance
  220. Telematic KC401
  221. ebay, 7c kit, worth it?
  222. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  223. Olson AM-158
  224. Check out my KT88 curves
  225. Just another /\|OOB to Tubes....Need Schem Help
  226. Problem with 832A PP amp
  227. Marantz 8b power transformer
  228. New SET Project
  229. Magnavox Model #OFMC26 Tube Stereo
  230. Balancing Servo
  231. Akai M8 Modding Service Required
  232. 12AX7 basics, some questions on wiring
  233. Hickok Model 600A
  234. Tube Shield
  235. Choosing an output transformer
  236. Lost in Translation - DIY Japan
  237. Ebay KT88
  238. Filament voltages - an idle curiosity
  239. Project caused by need
  240. PSU issues, advice needed.
  241. Tubelab SE Driver Bias Help
  242. Question about cathode voltage
  243. NOS/NIB tubes what does it mean?
  244. Help to identify transformers
  245. DIY tube amp power supply
  246. Socket Saver
  247. Need some tube help!
  248. Need Help Biasing TRV-M300SE Amps
  249. Will this supply work?
  250. First foray into SET, design for your comment

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