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  1. do I need to upgrade my heater supply to add another tube?
  2. Anyone have curves for a 2C52?
  3. tube-amplifier-shaped-usb-speaker
  4. pre-amp tubes: matching and care
  5. How to self taught about building tube amplifiers
  6. Any pretty good/bad chinese amps?
  7. Couple idiot questions....
  8. Looking for the triode mode of Z759
  9. Couple idiot questions....
  10. push pull 45
  11. Video of hum noise when I switch on the reverb of my Twin Amp
  12. 6sj7 spice model
  13. Help finding parallel 45 SE schematic
  14. filling in the low end, 6bq5 12ax7 circuitry
  15. Dynaco Mark VI
  16. Looking for Sonic Frontiers SFS80 Schematic
  17. CCS or V.REG for OP anode
  18. Yarland FV 34CIII
  19. Looking for OPT steel covers
  20. Damper diodes, center tapped heater, B+
  21. Dynaco ST-35 Newbie cathodyne question
  22. Anyone have valve/tube libraries for express PCB or PCB123?
  23. Looking for the Ultimate Aikido.
  24. CCS loaded DHT cathode follower?
  25. Phono stage with LT1028 MC input
  26. New valve int flash over why ?
  27. Sweep tube suggestions
  28. Amp project output problem
  29. 12AX7,6BQ5 PP Amp Search.
  30. Dynaco MkIII preamp/linestage recommendations?
  31. Can someone please check my PCB layout for this preamp?
  32. looking for easy, low cost guitar amp project
  33. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  34. 1KW power - what do you think?
  35. Bottlehead Filament Choke FC-1 for Push-Pull?
  36. Home James! But first, which transformer?
  37. NAD preamp = 6BQ5 Frankenschteen
  38. Wintersweet highvividity driver circuit
  39. Looking for TT11(CV1501) triode mode curve
  40. Amp switching with 4093/4066. How to add indicator LEDs?
  41. Yaqin MC-10L Blown Fuse
  42. 2a3 amp, progress picture
  43. How do I implement an AZ1 rec tube???
  44. Profit margin on used tube amps
  45. 300B sockets (different question)
  46. How can I modify this grommes little jewel amp for guitar.
  47. tri-amping question (s)
  48. Unity coupled power stage
  49. Acquired A Bunch Of Tubes
  50. Understanding load lines
  51. what would happen if.........?
  52. Testing valves/tubes
  53. 300b socket
  54. Vertical vs. Horizontal does it matter?
  55. Layout thoughts hmm....
  56. ID request, is this a pre?
  57. Anyone got any info on the Tippatone 500 watt amps?
  58. SMPS for Filaments?
  59. Using 6n6pi Push and Pull
  60. Optimum Tube Temperature
  61. Chassis
  62. 5670
  63. will this spice works in real word?
  64. An amplifier for Burning Man
  65. 12AT7,12AU7 Ultra linear cascode
  66. El Cheapo Grande
  67. EL84 Unused pins safe to connect?
  68. 6BQ5/EL84 tube buffer questions
  69. How much power do I need?
  70. Tube buffer/preamp. Where to place voltage divider?
  71. Schematic wanted for VTL Preamp "Maximal"
  72. modified GEC 88-50
  73. Zenith 7B31 Help
  74. Do swingers always buzz when they swing?
  75. 6at6 tube? What can i use it for?
  76. Sovtek 6550WA?
  77. how to make a tube gyrator eq?
  78. Transformer needed or "solid state guy needs help from tube guys"
  79. Differential input, SET output
  80. FFT of PSUD2 output?
  81. Differential push-pull design question
  82. Any EF184 users?
  83. 30P1S - How to use them?
  84. st-70 as good as it gets?
  85. Subbing in a TVC - input load Q
  86. Chinese tubes, new ones or relabeled?
  87. 6AV6 => 12AX7 question
  88. crate vintage club 50 2x12 keeps blowing preamp tubes
  89. 845 & 300b tubes
  90. Sourcing sockets and plugs for power supply umbilicals
  91. Sub mini history question ...
  92. 6DX8 Amp for Headphones and Low Volume Needs
  93. Surplus Voltage Solution
  94. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  95. RCA mystery tube help
  96. Breadboarding/Prototyping - How to and Tips/Tricks
  97. Sub-Miniature Tubes - Low Voltage
  98. True direct-coupled PP amp
  99. "Radical" twist on an all DHT phonostage
  100. input tubes for 300b
  101. JE Labs simple 2a3 filiment tranny, 1 or 2?
  102. ebay Valve Preamps boards for 18 !
  103. Smoothing caps
  104. Spud issues - a little help, please
  105. GLY513 in PS of Simple SE / PP and OTL
  106. Has anyone here built something with this super triode?
  107. What is this part in old radio?
  108. Has anyone done anything with a 5977 sub-mini
  109. Driving EQ from kathode resistor
  110. Understanding CCS vs CVS
  111. Can you believe this!
  112. help with my humming valve amp
  113. Picking tubes for SimpleSE-ish amplifier
  114. 6gk5/ECC88 Phono any comments.
  115. Meng Yue X1 6P1 amp (NOT the mini)
  116. Basic HiFi Tube Amp Layout? Please?
  117. stupid switch question
  118. Max Current of James JS-6123HS Transformer
  119. How do you determine a driver stage?
  120. SUPER cheap nos tubes if you live in california.
  121. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  122. a good tube tester?
  123. Can't get adjustable reg to work
  124. 9 volt tube preamp.
  125. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  126. Equivalent to IXCP10M45S?
  127. Looking for non-DRD 300B using D3a as driver
  128. Akai M8 rebuild/restore/will-this-work?
  129. space charge 12fx8 amp or preamp schematic?
  130. Help with setup to trace UL curves
  131. My KT88 Williamson Amp Build
  132. UV 203A any good for audio ?
  133. What gives with this square wave?
  134. bottlehead paramour PT
  135. DC filament supply without electrolytic(s)?
  136. Looking for R Core power trafo and choke
  137. PP tube amp for bi-amping : above 400 hz
  138. 6N6P question
  139. Integrated valve amplifier : to buy or to build
  140. Lookin for an ST-70-like project
  141. Formula for Zout of diff pair
  142. 6SL7 and Crossovers
  143. Meng Yue: EL34 or 6P1?
  144. Power Transformers and chokes
  145. nos amperex authentic? label doesn't rub off
  146. Software analysis using tube analog circuit Audio Note Kit 1
  147. Webster Amps,Racine Wis.
  148. Help figuring out resistor values
  149. Small (Novel) Tube Rectifiers?
  150. Conrad Johnson ART preamp question.
  151. pd510
  152. i want to build 3D21WB tube PP amp
  153. How to choose an optimal load line for a cathode follwer buffer?
  154. removing sound controlls...
  155. Pentode cathode follower output impedance
  156. Telematic KC401
  157. ebay, 7c kit, worth it?
  158. Mullard 5-10 for guitar use?
  159. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  160. Olson AM-158
  161. Check out my KT88 curves
  162. Just another /\|OOB to Tubes....Need Schem Help
  163. Problem with 832A PP amp
  164. Marantz 8b power transformer
  165. New SET Project
  166. Magnavox Model #OFMC26 Tube Stereo
  167. Balancing Servo
  168. Akai M8 Modding Service Required
  169. 12AX7 basics, some questions on wiring
  170. Hickok Model 600A
  171. Valve for Marshall AVT275 amp
  172. Tube Shield
  173. Choosing an output transformer
  174. Lost in Translation - DIY Japan
  175. Ebay KT88
  176. Filament voltages - an idle curiosity
  177. Project caused by need
  178. PSU issues, advice needed.
  179. Tubelab SE Driver Bias Help
  180. Question about cathode voltage
  181. NOS/NIB tubes what does it mean?
  182. Help to identify transformers
  183. Guitar amp schematic for PPP EL84
  184. DIY tube amp power supply
  185. Socket Saver
  186. Need some tube help!
  187. Need Help Biasing TRV-M300SE Amps
  188. Will this supply work?
  189. First foray into SET, design for your comment
  190. Help understanding a few Ohm's law calculations
  191. Hum in left channer - rogers cadet 3
  192. Need help on understanding AudioResearch like output stage
  193. Help finding 2A3 integrated 2 stage design
  194. 75 / 2A6 Spice Model?
  195. Vacuum Tube DAC
  196. Need help wiring CT transformer
  197. What is this component in my tube amp?
  198. What type of amp should I make with this? Schematic help also needed
  199. 6418 tube preamplifier - Oatley Electronics
  200. Black out coused demage in tube output stage
  201. Need help adding a master volume, and some troubleshooting ...
  202. Other uses for your 807's
  203. Ballantyne output Iron
  204. Power Trafo & Choke headroom
  205. Bare R Cores and bobbins, where???
  206. Plate chokes
  207. Has anyone done anything with the 6112 tube?
  208. el84 amp advice
  209. About to be scammed - bigtime
  210. Dynaco PAS3 -- New Cap board installed
  211. Throw it on the heap... SSE
  212. Loose Tube Bases
  213. 12E1 Triode PP, Any Suggestion?
  214. dac output stage with 5687 pp
  215. Help needed with my Epi Valve Jr
  216. Baby Tube Subwoofer Amp help wanted
  217. 12BH7 and the Simple SE?
  218. "The Bursar" Push-Pull Amplifier
  219. Needed - Advice on tubelab Simple SE build
  220. Oil filled caps - how are they made? DIY caps?
  221. EL34 schematic question
  222. Newb B9A question
  223. 6889 in the Simple SE - misc observations
  224. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  225. 01A tube amp Schematic???
  226. Tubelab's own forum
  227. Are there elegant ways to prevent huge power-on plops?
  228. New EL84 Push-Pull Monoblock
  229. Just to laugh...
  230. QUAD II Stereo Set Up
  231. hammond ao68/7591 question
  232. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  233. How to run a square wave test on an OPT??
  234. Vanderveen 73 Watt valve amplifier PR20HE-S2
  235. 6LU8 Spud - Request for comments
  236. Increasing Output Power for the Engineer's Amplifier
  237. Amperex
  238. A Single Ended presentation
  239. Single-endet Stereo Amp KT88, 6L6, 6P3S
  240. My new 6H30 pre
  241. amplifier bias
  242. Distortion measurements on Meng 6P1
  243. What's wrong with SE Cad?
  244. Observations
  245. p2p aikido phono finished!
  246. 6AC10 tubes
  247. Tricked On Ebay!
  248. Last newbe queston for today, shielding
  249. Pot actoss the filaments
  250. How to adjust summetry?

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