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  1. Counterpoint SA-7 - need a pic of the inside
  2. Are Chinese 6N2 the same as Russian 6N2P?
  3. New project; Musical Machine
  4. 4D32 SE amp, a few more questions
  5. Static shock with simple se
  6. Old electrolytic caps ok? MOSCODE 600
  7. Transformer Flux Band Tips and Tricks?
  8. What tube config will get this sound?
  9. On cleaning transformers
  10. My first project ELEKIT TU-870R
  11. DC7 MkII :New Schade 6080 amp.
  12. current driver tube amplifier
  13. A DC coupled headphones amp
  14. Ebay trader zhangsheng
  15. decware kits worth it?
  16. Simple test for transformer frequency response?
  17. Modular guitar tube amp power supply - interface concerns
  18. Vacuum Tube Voltmeters
  19. Power Trans. Load Test
  20. Replacing Cap Across Filter Cap
  21. Regulate HV preamp with floating LM317?
  22. Rogers cadet 3
  23. AC15 Heritage Project w/ Sound Clips
  24. Output impedance tap considerations.....
  25. Amp switch safety load
  26. MF X-10D replica problem
  27. Nice triode
  28. Low gain preamplifier
  29. Improving a Maple Tree Audio PS 2 power supply
  30. Baby Huey-ish phono?
  31. New? Local Feedback Method
  32. PSUD Help Needed: What value do I enter for current?
  33. Question on WE310
  34. How do you calculate choke size in a power supply?
  35. tubecad and tubecad se
  36. 300B amp Power Supply
  37. Adjustable internal Resonance?
  38. B+ Voltage sag for AB1 PP
  39. Maplin
  40. Preamp with an integrated amp
  41. First "boot" in 15 years
  42. Inherited these tubes. Anything interesting?
  43. What application for this tube?
  44. tantalum cap
  45. do I need to upgrade my heater supply to add another tube?
  46. Anyone have curves for a 2C52?
  47. tube-amplifier-shaped-usb-speaker
  48. pre-amp tubes: matching and care
  49. How to self taught about building tube amplifiers
  50. Any pretty good/bad chinese amps?
  51. Couple idiot questions....
  52. Looking for the triode mode of Z759
  53. Couple idiot questions....
  54. push pull 45
  55. Video of hum noise when I switch on the reverb of my Twin Amp
  56. 6sj7 spice model
  57. Help finding parallel 45 SE schematic
  58. filling in the low end, 6bq5 12ax7 circuitry
  59. Dynaco Mark VI
  60. Looking for Sonic Frontiers SFS80 Schematic
  61. CCS or V.REG for OP anode
  62. Yarland FV 34CIII
  63. Looking for OPT steel covers
  64. Damper diodes, center tapped heater, B+
  65. Dynaco ST-35 Newbie cathodyne question
  66. Anyone have valve/tube libraries for express PCB or PCB123?
  67. Looking for the Ultimate Aikido.
  68. CCS loaded DHT cathode follower?
  69. Phono stage with LT1028 MC input
  70. New valve int flash over why ?
  71. Sweep tube suggestions
  72. Amp project output problem
  73. 12AX7,6BQ5 PP Amp Search.
  74. Dynaco MkIII preamp/linestage recommendations?
  75. Can someone please check my PCB layout for this preamp?
  76. looking for easy, low cost guitar amp project
  77. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  78. 1KW power - what do you think?
  79. Bottlehead Filament Choke FC-1 for Push-Pull?
  80. Home James! But first, which transformer?
  81. NAD preamp = 6BQ5 Frankenschteen
  82. Wintersweet highvividity driver circuit
  83. Looking for TT11(CV1501) triode mode curve
  84. Amp switching with 4093/4066. How to add indicator LEDs?
  85. Yaqin MC-10L Blown Fuse
  86. 2a3 amp, progress picture
  87. How do I implement an AZ1 rec tube???
  88. Profit margin on used tube amps
  89. 300B sockets (different question)
  90. How can I modify this grommes little jewel amp for guitar.
  91. tri-amping question (s)
  92. Unity coupled power stage
  93. Acquired A Bunch Of Tubes
  94. Understanding load lines
  95. what would happen if.........?
  96. Testing valves/tubes
  97. 300b socket
  98. Vertical vs. Horizontal does it matter?
  99. Layout thoughts hmm....
  100. ID request, is this a pre?
  101. Anyone got any info on the Tippatone 500 watt amps?
  102. SMPS for Filaments?
  103. Using 6n6pi Push and Pull
  104. Optimum Tube Temperature
  105. Chassis
  106. 5670
  107. will this spice works in real word?
  108. An amplifier for Burning Man
  109. 12AT7,12AU7 Ultra linear cascode
  110. El Cheapo Grande
  111. EL84 Unused pins safe to connect?
  112. 6BQ5/EL84 tube buffer questions
  113. How much power do I need?
  114. Tube buffer/preamp. Where to place voltage divider?
  115. Schematic wanted for VTL Preamp "Maximal"
  116. modified GEC 88-50
  117. Zenith 7B31 Help
  118. Do swingers always buzz when they swing?
  119. 6at6 tube? What can i use it for?
  120. Sovtek 6550WA?
  121. how to make a tube gyrator eq?
  122. Transformer needed or "solid state guy needs help from tube guys"
  123. Differential input, SET output
  124. FFT of PSUD2 output?
  125. Differential push-pull design question
  126. Any EF184 users?
  127. 30P1S - How to use them?
  128. st-70 as good as it gets?
  129. Subbing in a TVC - input load Q
  130. Chinese tubes, new ones or relabeled?
  131. 6AV6 => 12AX7 question
  132. crate vintage club 50 2x12 keeps blowing preamp tubes
  133. 845 & 300b tubes
  134. Sourcing sockets and plugs for power supply umbilicals
  135. Sub mini history question ...
  136. 6DX8 Amp for Headphones and Low Volume Needs
  137. Surplus Voltage Solution
  138. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  139. RCA mystery tube help
  140. Breadboarding/Prototyping - How to and Tips/Tricks
  141. Sub-Miniature Tubes - Low Voltage
  142. True direct-coupled PP amp
  143. "Radical" twist on an all DHT phonostage
  144. input tubes for 300b
  145. JE Labs simple 2a3 filiment tranny, 1 or 2?
  146. ebay Valve Preamps boards for 18 !
  147. Smoothing caps
  148. Spud issues - a little help, please
  149. GLY513 in PS of Simple SE / PP and OTL
  150. Has anyone here built something with this super triode?
  151. What is this part in old radio?
  152. Has anyone done anything with a 5977 sub-mini
  153. Driving EQ from kathode resistor
  154. Understanding CCS vs CVS
  155. Can you believe this!
  156. help with my humming valve amp
  157. Picking tubes for SimpleSE-ish amplifier
  158. 6gk5/ECC88 Phono any comments.
  159. Meng Yue X1 6P1 amp (NOT the mini)
  160. Basic HiFi Tube Amp Layout? Please?
  161. stupid switch question
  162. Max Current of James JS-6123HS Transformer
  163. How do you determine a driver stage?
  164. SUPER cheap nos tubes if you live in california.
  165. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  166. a good tube tester?
  167. Can't get adjustable reg to work
  168. 9 volt tube preamp.
  169. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  170. Equivalent to IXCP10M45S?
  171. Looking for non-DRD 300B using D3a as driver
  172. Akai M8 rebuild/restore/will-this-work?
  173. space charge 12fx8 amp or preamp schematic?
  174. Help with setup to trace UL curves
  175. My KT88 Williamson Amp Build
  176. UV 203A any good for audio ?
  177. What gives with this square wave?
  178. bottlehead paramour PT
  179. DC filament supply without electrolytic(s)?
  180. Looking for R Core power trafo and choke
  181. PP tube amp for bi-amping : above 400 hz
  182. 6N6P question
  183. Integrated valve amplifier : to buy or to build
  184. Lookin for an ST-70-like project
  185. Formula for Zout of diff pair
  186. 6SL7 and Crossovers
  187. Meng Yue: EL34 or 6P1?
  188. Power Transformers and chokes
  189. nos amperex authentic? label doesn't rub off
  190. Software analysis using tube analog circuit Audio Note Kit 1
  191. Webster Amps,Racine Wis.
  192. Help figuring out resistor values
  193. Small (Novel) Tube Rectifiers?
  194. Conrad Johnson ART preamp question.
  195. pd510
  196. i want to build 3D21WB tube PP amp
  197. How to choose an optimal load line for a cathode follwer buffer?
  198. removing sound controlls...
  199. Pentode cathode follower output impedance
  200. Telematic KC401
  201. ebay, 7c kit, worth it?
  202. Mullard 5-10 for guitar use?
  203. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  204. Olson AM-158
  205. Check out my KT88 curves
  206. Just another /\|OOB to Tubes....Need Schem Help
  207. Problem with 832A PP amp
  208. Marantz 8b power transformer
  209. New SET Project
  210. Magnavox Model #OFMC26 Tube Stereo
  211. Balancing Servo
  212. Akai M8 Modding Service Required
  213. 12AX7 basics, some questions on wiring
  214. Hickok Model 600A
  215. Valve for Marshall AVT275 amp
  216. Tube Shield
  217. Choosing an output transformer
  218. Lost in Translation - DIY Japan
  219. Ebay KT88
  220. Filament voltages - an idle curiosity
  221. Project caused by need
  222. PSU issues, advice needed.
  223. Tubelab SE Driver Bias Help
  224. Question about cathode voltage
  225. NOS/NIB tubes what does it mean?
  226. Help to identify transformers
  227. Guitar amp schematic for PPP EL84
  228. DIY tube amp power supply
  229. Socket Saver
  230. Need some tube help!
  231. Need Help Biasing TRV-M300SE Amps
  232. Will this supply work?
  233. First foray into SET, design for your comment
  234. Help understanding a few Ohm's law calculations
  235. Hum in left channer - rogers cadet 3
  236. Need help on understanding AudioResearch like output stage
  237. Help finding 2A3 integrated 2 stage design
  238. 75 / 2A6 Spice Model?
  239. Vacuum Tube DAC
  240. Need help wiring CT transformer
  241. What is this component in my tube amp?
  242. What type of amp should I make with this? Schematic help also needed
  243. 6418 tube preamplifier - Oatley Electronics
  244. Black out coused demage in tube output stage
  245. Need help adding a master volume, and some troubleshooting ...
  246. Other uses for your 807's
  247. Ballantyne output Iron
  248. Power Trafo & Choke headroom
  249. Bare R Cores and bobbins, where???
  250. Plate chokes

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