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  1. tube-amplifier-shaped-usb-speaker
  2. pre-amp tubes: matching and care
  3. How to self taught about building tube amplifiers
  4. Any pretty good/bad chinese amps?
  5. Couple idiot questions....
  6. Looking for the triode mode of Z759
  7. Couple idiot questions....
  8. push pull 45
  9. Video of hum noise when I switch on the reverb of my Twin Amp
  10. 6sj7 spice model
  11. Help finding parallel 45 SE schematic
  12. filling in the low end, 6bq5 12ax7 circuitry
  13. Dynaco Mark VI
  14. Looking for Sonic Frontiers SFS80 Schematic
  15. CCS or V.REG for OP anode
  16. Yarland FV 34CIII
  17. Looking for OPT steel covers
  18. Damper diodes, center tapped heater, B+
  19. Dynaco ST-35 Newbie cathodyne question
  20. Anyone have valve/tube libraries for express PCB or PCB123?
  21. Looking for the Ultimate Aikido.
  22. CCS loaded DHT cathode follower?
  23. Phono stage with LT1028 MC input
  24. New valve int flash over why ?
  25. Sweep tube suggestions
  26. Amp project output problem
  27. 12AX7,6BQ5 PP Amp Search.
  28. Dynaco MkIII preamp/linestage recommendations?
  29. Can someone please check my PCB layout for this preamp?
  30. looking for easy, low cost guitar amp project
  31. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  32. 1KW power - what do you think?
  33. Bottlehead Filament Choke FC-1 for Push-Pull?
  34. Home James! But first, which transformer?
  35. NAD preamp = 6BQ5 Frankenschteen
  36. Wintersweet highvividity driver circuit
  37. Looking for TT11(CV1501) triode mode curve
  38. Amp switching with 4093/4066. How to add indicator LEDs?
  39. Yaqin MC-10L Blown Fuse
  40. 2a3 amp, progress picture
  41. How do I implement an AZ1 rec tube???
  42. Profit margin on used tube amps
  43. 300B sockets (different question)
  44. How can I modify this grommes little jewel amp for guitar.
  45. tri-amping question (s)
  46. Unity coupled power stage
  47. Acquired A Bunch Of Tubes
  48. Understanding load lines
  49. what would happen if.........?
  50. Testing valves/tubes
  51. 300b socket
  52. Vertical vs. Horizontal does it matter?
  53. Layout thoughts hmm....
  54. ID request, is this a pre?
  55. Anyone got any info on the Tippatone 500 watt amps?
  56. SMPS for Filaments?
  57. Using 6n6pi Push and Pull
  58. Optimum Tube Temperature
  59. Chassis
  60. 5670
  61. will this spice works in real word?
  62. An amplifier for Burning Man
  63. 12AT7,12AU7 Ultra linear cascode
  64. El Cheapo Grande
  65. EL84 Unused pins safe to connect?
  66. 6BQ5/EL84 tube buffer questions
  67. How much power do I need?
  68. Tube buffer/preamp. Where to place voltage divider?
  69. Schematic wanted for VTL Preamp "Maximal"
  70. modified GEC 88-50
  71. Zenith 7B31 Help
  72. Do swingers always buzz when they swing?
  73. 6at6 tube? What can i use it for?
  74. Sovtek 6550WA?
  75. how to make a tube gyrator eq?
  76. Transformer needed or "solid state guy needs help from tube guys"
  77. Differential input, SET output
  78. FFT of PSUD2 output?
  79. Differential push-pull design question
  80. Any EF184 users?
  81. 30P1S - How to use them?
  82. st-70 as good as it gets?
  83. Subbing in a TVC - input load Q
  84. Chinese tubes, new ones or relabeled?
  85. 6AV6 => 12AX7 question
  86. crate vintage club 50 2x12 keeps blowing preamp tubes
  87. 845 & 300b tubes
  88. Sourcing sockets and plugs for power supply umbilicals
  89. Sub mini history question ...
  90. 6DX8 Amp for Headphones and Low Volume Needs
  91. Surplus Voltage Solution
  92. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  93. RCA mystery tube help
  94. Breadboarding/Prototyping - How to and Tips/Tricks
  95. Sub-Miniature Tubes - Low Voltage
  96. True direct-coupled PP amp
  97. "Radical" twist on an all DHT phonostage
  98. input tubes for 300b
  99. JE Labs simple 2a3 filiment tranny, 1 or 2?
  100. ebay Valve Preamps boards for 18 !
  101. Smoothing caps
  102. Spud issues - a little help, please
  103. GLY513 in PS of Simple SE / PP and OTL
  104. Has anyone here built something with this super triode?
  105. What is this part in old radio?
  106. Has anyone done anything with a 5977 sub-mini
  107. Driving EQ from kathode resistor
  108. Understanding CCS vs CVS
  109. Can you believe this!
  110. help with my humming valve amp
  111. Picking tubes for SimpleSE-ish amplifier
  112. 6gk5/ECC88 Phono any comments.
  113. Meng Yue X1 6P1 amp (NOT the mini)
  114. Basic HiFi Tube Amp Layout? Please?
  115. stupid switch question
  116. Max Current of James JS-6123HS Transformer
  117. How do you determine a driver stage?
  118. SUPER cheap nos tubes if you live in california.
  119. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  120. a good tube tester?
  121. Can't get adjustable reg to work
  122. 9 volt tube preamp.
  123. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  124. Equivalent to IXCP10M45S?
  125. Looking for non-DRD 300B using D3a as driver
  126. Akai M8 rebuild/restore/will-this-work?
  127. space charge 12fx8 amp or preamp schematic?
  128. Help with setup to trace UL curves
  129. My KT88 Williamson Amp Build
  130. UV 203A any good for audio ?
  131. What gives with this square wave?
  132. bottlehead paramour PT
  133. DC filament supply without electrolytic(s)?
  134. Looking for R Core power trafo and choke
  135. PP tube amp for bi-amping : above 400 hz
  136. 6N6P question
  137. Integrated valve amplifier : to buy or to build
  138. Lookin for an ST-70-like project
  139. Formula for Zout of diff pair
  140. 6SL7 and Crossovers
  141. Meng Yue: EL34 or 6P1?
  142. Power Transformers and chokes
  143. nos amperex authentic? label doesn't rub off
  144. Software analysis using tube analog circuit Audio Note Kit 1
  145. Webster Amps,Racine Wis.
  146. Help figuring out resistor values
  147. Small (Novel) Tube Rectifiers?
  148. Conrad Johnson ART preamp question.
  149. pd510
  150. i want to build 3D21WB tube PP amp
  151. How to choose an optimal load line for a cathode follwer buffer?
  152. removing sound controlls...
  153. Pentode cathode follower output impedance
  154. Telematic KC401
  155. ebay, 7c kit, worth it?
  156. Mullard 5-10 for guitar use?
  157. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  158. Olson AM-158
  159. Check out my KT88 curves
  160. Just another /\|OOB to Tubes....Need Schem Help
  161. Problem with 832A PP amp
  162. Marantz 8b power transformer
  163. New SET Project
  164. Magnavox Model #OFMC26 Tube Stereo
  165. Balancing Servo
  166. Akai M8 Modding Service Required
  167. 12AX7 basics, some questions on wiring
  168. Hickok Model 600A
  169. Valve for Marshall AVT275 amp
  170. Tube Shield
  171. Choosing an output transformer
  172. Lost in Translation - DIY Japan
  173. Ebay KT88
  174. Filament voltages - an idle curiosity
  175. Project caused by need
  176. PSU issues, advice needed.
  177. Tubelab SE Driver Bias Help
  178. Question about cathode voltage
  179. NOS/NIB tubes what does it mean?
  180. Help to identify transformers
  181. Guitar amp schematic for PPP EL84
  182. DIY tube amp power supply
  183. Socket Saver
  184. Need some tube help!
  185. Need Help Biasing TRV-M300SE Amps
  186. Will this supply work?
  187. First foray into SET, design for your comment
  188. Help understanding a few Ohm's law calculations
  189. Hum in left channer - rogers cadet 3
  190. Need help on understanding AudioResearch like output stage
  191. Help finding 2A3 integrated 2 stage design
  192. 75 / 2A6 Spice Model?
  193. Vacuum Tube DAC
  194. Need help wiring CT transformer
  195. What is this component in my tube amp?
  196. What type of amp should I make with this? Schematic help also needed
  197. 6418 tube preamplifier - Oatley Electronics
  198. Black out coused demage in tube output stage
  199. Need help adding a master volume, and some troubleshooting ...
  200. Other uses for your 807's
  201. Ballantyne output Iron
  202. Power Trafo & Choke headroom
  203. Bare R Cores and bobbins, where???
  204. Plate chokes
  205. Has anyone done anything with the 6112 tube?
  206. el84 amp advice
  207. About to be scammed - bigtime
  208. Dynaco PAS3 -- New Cap board installed
  209. Throw it on the heap... SSE
  210. Loose Tube Bases
  211. 12E1 Triode PP, Any Suggestion?
  212. dac output stage with 5687 pp
  213. Help needed with my Epi Valve Jr
  214. Baby Tube Subwoofer Amp help wanted
  215. 12BH7 and the Simple SE?
  216. "The Bursar" Push-Pull Amplifier
  217. Needed - Advice on tubelab Simple SE build
  218. Oil filled caps - how are they made? DIY caps?
  219. EL34 schematic question
  220. Newb B9A question
  221. 6889 in the Simple SE - misc observations
  222. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  223. 01A tube amp Schematic???
  224. Tubelab's own forum
  225. Are there elegant ways to prevent huge power-on plops?
  226. New EL84 Push-Pull Monoblock
  227. Just to laugh...
  228. QUAD II Stereo Set Up
  229. hammond ao68/7591 question
  230. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  231. How to run a square wave test on an OPT??
  232. Vanderveen 73 Watt valve amplifier PR20HE-S2
  233. 6LU8 Spud - Request for comments
  234. Increasing Output Power for the Engineer's Amplifier
  235. Amperex
  236. A Single Ended presentation
  237. Single-endet Stereo Amp KT88, 6L6, 6P3S
  238. My new 6H30 pre
  239. amplifier bias
  240. Distortion measurements on Meng 6P1
  241. What's wrong with SE Cad?
  242. Observations
  243. p2p aikido phono finished!
  244. 6AC10 tubes
  245. Tricked On Ebay!
  246. Last newbe queston for today, shielding
  247. Pot actoss the filaments
  248. How to adjust summetry?
  249. Tube swap THD
  250. Yarland 34A - Crunch sound, now not the same, any ideas?

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