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  1. MF X-10D replica problem
  2. Nice triode
  3. Low gain preamplifier
  4. Improving a Maple Tree Audio PS 2 power supply
  5. Baby Huey-ish phono?
  6. New? Local Feedback Method
  7. PSUD Help Needed: What value do I enter for current?
  8. Question on WE310
  9. How do you calculate choke size in a power supply?
  10. tubecad and tubecad se
  11. 300B amp Power Supply
  12. Adjustable internal Resonance?
  13. B+ Voltage sag for AB1 PP
  14. Maplin
  15. Preamp with an integrated amp
  16. First "boot" in 15 years
  17. Inherited these tubes. Anything interesting?
  18. What application for this tube?
  19. tantalum cap
  20. do I need to upgrade my heater supply to add another tube?
  21. Anyone have curves for a 2C52?
  22. tube-amplifier-shaped-usb-speaker
  23. pre-amp tubes: matching and care
  24. How to self taught about building tube amplifiers
  25. Any pretty good/bad chinese amps?
  26. Couple idiot questions....
  27. Looking for the triode mode of Z759
  28. Couple idiot questions....
  29. push pull 45
  30. Video of hum noise when I switch on the reverb of my Twin Amp
  31. 6sj7 spice model
  32. Help finding parallel 45 SE schematic
  33. filling in the low end, 6bq5 12ax7 circuitry
  34. Dynaco Mark VI
  35. Looking for Sonic Frontiers SFS80 Schematic
  36. CCS or V.REG for OP anode
  37. Yarland FV 34CIII
  38. Looking for OPT steel covers
  39. Damper diodes, center tapped heater, B+
  40. Dynaco ST-35 Newbie cathodyne question
  41. Anyone have valve/tube libraries for express PCB or PCB123?
  42. Looking for the Ultimate Aikido.
  43. CCS loaded DHT cathode follower?
  44. Phono stage with LT1028 MC input
  45. New valve int flash over why ?
  46. Sweep tube suggestions
  47. Amp project output problem
  48. 12AX7,6BQ5 PP Amp Search.
  49. Dynaco MkIII preamp/linestage recommendations?
  50. Can someone please check my PCB layout for this preamp?
  51. Bottlehead Filament Choke FC-1 for Push-Pull?
  52. Home James! But first, which transformer?
  53. NAD preamp = 6BQ5 Frankenschteen
  54. Wintersweet highvividity driver circuit
  55. Looking for TT11(CV1501) triode mode curve
  56. Amp switching with 4093/4066. How to add indicator LEDs?
  57. Yaqin MC-10L Blown Fuse
  58. 2a3 amp, progress picture
  59. How do I implement an AZ1 rec tube???
  60. Profit margin on used tube amps
  61. 300B sockets (different question)
  62. tri-amping question (s)
  63. Unity coupled power stage
  64. Acquired A Bunch Of Tubes
  65. Understanding load lines
  66. what would happen if.........?
  67. Testing valves/tubes
  68. 300b socket
  69. Vertical vs. Horizontal does it matter?
  70. Layout thoughts hmm....
  71. ID request, is this a pre?
  72. Anyone got any info on the Tippatone 500 watt amps?
  73. SMPS for Filaments?
  74. Using 6n6pi Push and Pull
  75. Optimum Tube Temperature
  76. Chassis
  77. 5670
  78. will this spice works in real word?
  79. An amplifier for Burning Man
  80. 12AT7,12AU7 Ultra linear cascode
  81. El Cheapo Grande
  82. EL84 Unused pins safe to connect?
  83. 6BQ5/EL84 tube buffer questions
  84. How much power do I need?
  85. Tube buffer/preamp. Where to place voltage divider?
  86. Schematic wanted for VTL Preamp "Maximal"
  87. modified GEC 88-50
  88. Zenith 7B31 Help
  89. Do swingers always buzz when they swing?
  90. 6at6 tube? What can i use it for?
  91. Sovtek 6550WA?
  92. how to make a tube gyrator eq?
  93. Transformer needed or "solid state guy needs help from tube guys"
  94. Differential input, SET output
  95. FFT of PSUD2 output?
  96. Differential push-pull design question
  97. Any EF184 users?
  98. 30P1S - How to use them?
  99. st-70 as good as it gets?
  100. Subbing in a TVC - input load Q
  101. Chinese tubes, new ones or relabeled?
  102. 6AV6 => 12AX7 question
  103. 845 & 300b tubes
  104. Sourcing sockets and plugs for power supply umbilicals
  105. Sub mini history question ...
  106. 6DX8 Amp for Headphones and Low Volume Needs
  107. Surplus Voltage Solution
  108. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  109. RCA mystery tube help
  110. Breadboarding/Prototyping - How to and Tips/Tricks
  111. Sub-Miniature Tubes - Low Voltage
  112. True direct-coupled PP amp
  113. "Radical" twist on an all DHT phonostage
  114. input tubes for 300b
  115. JE Labs simple 2a3 filiment tranny, 1 or 2?
  116. ebay Valve Preamps boards for 18 !
  117. Smoothing caps
  118. Spud issues - a little help, please
  119. GLY513 in PS of Simple SE / PP and OTL
  120. Has anyone here built something with this super triode?
  121. What is this part in old radio?
  122. Has anyone done anything with a 5977 sub-mini
  123. Driving EQ from kathode resistor
  124. Understanding CCS vs CVS
  125. Can you believe this!
  126. help with my humming valve amp
  127. Picking tubes for SimpleSE-ish amplifier
  128. 6gk5/ECC88 Phono any comments.
  129. Meng Yue X1 6P1 amp (NOT the mini)
  130. Basic HiFi Tube Amp Layout? Please?
  131. stupid switch question
  132. Max Current of James JS-6123HS Transformer
  133. How do you determine a driver stage?
  134. SUPER cheap nos tubes if you live in california.
  135. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  136. a good tube tester?
  137. Can't get adjustable reg to work
  138. 9 volt tube preamp.
  139. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  140. Equivalent to IXCP10M45S?
  141. Looking for non-DRD 300B using D3a as driver
  142. Akai M8 rebuild/restore/will-this-work?
  143. space charge 12fx8 amp or preamp schematic?
  144. Help with setup to trace UL curves
  145. My KT88 Williamson Amp Build
  146. UV 203A any good for audio ?
  147. What gives with this square wave?
  148. bottlehead paramour PT
  149. DC filament supply without electrolytic(s)?
  150. Looking for R Core power trafo and choke
  151. PP tube amp for bi-amping : above 400 hz
  152. 6N6P question
  153. Integrated valve amplifier : to buy or to build
  154. Lookin for an ST-70-like project
  155. Formula for Zout of diff pair
  156. 6SL7 and Crossovers
  157. Meng Yue: EL34 or 6P1?
  158. Power Transformers and chokes
  159. nos amperex authentic? label doesn't rub off
  160. Software analysis using tube analog circuit Audio Note Kit 1
  161. Webster Amps,Racine Wis.
  162. Help figuring out resistor values
  163. Small (Novel) Tube Rectifiers?
  164. Conrad Johnson ART preamp question.
  165. pd510
  166. i want to build 3D21WB tube PP amp
  167. How to choose an optimal load line for a cathode follwer buffer?
  168. removing sound controlls...
  169. Pentode cathode follower output impedance
  170. Telematic KC401
  171. ebay, 7c kit, worth it?
  172. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  173. Olson AM-158
  174. Check out my KT88 curves
  175. Just another /\|OOB to Tubes....Need Schem Help
  176. Problem with 832A PP amp
  177. Marantz 8b power transformer
  178. New SET Project
  179. Magnavox Model #OFMC26 Tube Stereo
  180. Balancing Servo
  181. Akai M8 Modding Service Required
  182. 12AX7 basics, some questions on wiring
  183. Hickok Model 600A
  184. Tube Shield
  185. Choosing an output transformer
  186. Lost in Translation - DIY Japan
  187. Ebay KT88
  188. Filament voltages - an idle curiosity
  189. Project caused by need
  190. PSU issues, advice needed.
  191. Tubelab SE Driver Bias Help
  192. Question about cathode voltage
  193. NOS/NIB tubes what does it mean?
  194. Help to identify transformers
  195. DIY tube amp power supply
  196. Socket Saver
  197. Need some tube help!
  198. Need Help Biasing TRV-M300SE Amps
  199. Will this supply work?
  200. First foray into SET, design for your comment
  201. Help understanding a few Ohm's law calculations
  202. Hum in left channer - rogers cadet 3
  203. Need help on understanding AudioResearch like output stage
  204. Help finding 2A3 integrated 2 stage design
  205. 75 / 2A6 Spice Model?
  206. Vacuum Tube DAC
  207. Need help wiring CT transformer
  208. What is this component in my tube amp?
  209. What type of amp should I make with this? Schematic help also needed
  210. 6418 tube preamplifier - Oatley Electronics
  211. Black out coused demage in tube output stage
  212. Need help adding a master volume, and some troubleshooting ...
  213. Other uses for your 807's
  214. Ballantyne output Iron
  215. Power Trafo & Choke headroom
  216. Bare R Cores and bobbins, where???
  217. Plate chokes
  218. Has anyone done anything with the 6112 tube?
  219. el84 amp advice
  220. About to be scammed - bigtime
  221. Dynaco PAS3 -- New Cap board installed
  222. Throw it on the heap... SSE
  223. Loose Tube Bases
  224. 12E1 Triode PP, Any Suggestion?
  225. dac output stage with 5687 pp
  226. Help needed with my Epi Valve Jr
  227. Baby Tube Subwoofer Amp help wanted
  228. 12BH7 and the Simple SE?
  229. "The Bursar" Push-Pull Amplifier
  230. Needed - Advice on tubelab Simple SE build
  231. EL34 schematic question
  232. Newb B9A question
  233. 6889 in the Simple SE - misc observations
  234. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  235. 01A tube amp Schematic???
  236. Tubelab's own forum
  237. Are there elegant ways to prevent huge power-on plops?
  238. New EL84 Push-Pull Monoblock
  239. Just to laugh...
  240. QUAD II Stereo Set Up
  241. hammond ao68/7591 question
  242. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  243. How to run a square wave test on an OPT??
  244. Vanderveen 73 Watt valve amplifier PR20HE-S2
  245. 6LU8 Spud - Request for comments
  246. Increasing Output Power for the Engineer's Amplifier
  247. Amperex
  248. A Single Ended presentation
  249. Single-endet Stereo Amp KT88, 6L6, 6P3S
  250. My new 6H30 pre

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