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  1. 6AV6 => 12AX7 question
  2. crate vintage club 50 2x12 keeps blowing preamp tubes
  3. 845 & 300b tubes
  4. Sourcing sockets and plugs for power supply umbilicals
  5. Sub mini history question ...
  6. 6DX8 Amp for Headphones and Low Volume Needs
  7. Surplus Voltage Solution
  8. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  9. RCA mystery tube help
  10. Breadboarding/Prototyping - How to and Tips/Tricks
  11. Sub-Miniature Tubes - Low Voltage
  12. True direct-coupled PP amp
  13. "Radical" twist on an all DHT phonostage
  14. input tubes for 300b
  15. JE Labs simple 2a3 filiment tranny, 1 or 2?
  16. ebay Valve Preamps boards for 18 !
  17. Smoothing caps
  18. Spud issues - a little help, please
  19. GLY513 in PS of Simple SE / PP and OTL
  20. Has anyone here built something with this super triode?
  21. What is this part in old radio?
  22. Has anyone done anything with a 5977 sub-mini
  23. Driving EQ from kathode resistor
  24. Understanding CCS vs CVS
  25. Can you believe this!
  26. help with my humming valve amp
  27. Picking tubes for SimpleSE-ish amplifier
  28. 6gk5/ECC88 Phono any comments.
  29. Meng Yue X1 6P1 amp (NOT the mini)
  30. Basic HiFi Tube Amp Layout? Please?
  31. stupid switch question
  32. Max Current of James JS-6123HS Transformer
  33. How do you determine a driver stage?
  34. SUPER cheap nos tubes if you live in california.
  35. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  36. a good tube tester?
  37. Can't get adjustable reg to work
  38. 9 volt tube preamp.
  39. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  40. Equivalent to IXCP10M45S?
  41. Looking for non-DRD 300B using D3a as driver
  42. Akai M8 rebuild/restore/will-this-work?
  43. space charge 12fx8 amp or preamp schematic?
  44. Help with setup to trace UL curves
  45. My KT88 Williamson Amp Build
  46. UV 203A any good for audio ?
  47. What gives with this square wave?
  48. bottlehead paramour PT
  49. DC filament supply without electrolytic(s)?
  50. Looking for R Core power trafo and choke
  51. PP tube amp for bi-amping : above 400 hz
  52. 6N6P question
  53. Integrated valve amplifier : to buy or to build
  54. Lookin for an ST-70-like project
  55. Formula for Zout of diff pair
  56. 6SL7 and Crossovers
  57. Meng Yue: EL34 or 6P1?
  58. Power Transformers and chokes
  59. nos amperex authentic? label doesn't rub off
  60. Software analysis using tube analog circuit Audio Note Kit 1
  61. Webster Amps,Racine Wis.
  62. Help figuring out resistor values
  63. Small (Novel) Tube Rectifiers?
  64. Conrad Johnson ART preamp question.
  65. pd510
  66. i want to build 3D21WB tube PP amp
  67. How to choose an optimal load line for a cathode follwer buffer?
  68. removing sound controlls...
  69. Pentode cathode follower output impedance
  70. Telematic KC401
  71. ebay, 7c kit, worth it?
  72. Mullard 5-10 for guitar use?
  73. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  74. Olson AM-158
  75. Check out my KT88 curves
  76. Just another /\|OOB to Tubes....Need Schem Help
  77. Problem with 832A PP amp
  78. Marantz 8b power transformer
  79. New SET Project
  80. Magnavox Model #OFMC26 Tube Stereo
  81. Balancing Servo
  82. Akai M8 Modding Service Required
  83. 12AX7 basics, some questions on wiring
  84. Hickok Model 600A
  85. Valve for Marshall AVT275 amp
  86. Tube Shield
  87. Choosing an output transformer
  88. Lost in Translation - DIY Japan
  89. Ebay KT88
  90. Filament voltages - an idle curiosity
  91. Project caused by need
  92. PSU issues, advice needed.
  93. Tubelab SE Driver Bias Help
  94. Question about cathode voltage
  95. NOS/NIB tubes what does it mean?
  96. Help to identify transformers
  97. Guitar amp schematic for PPP EL84
  98. DIY tube amp power supply
  99. Socket Saver
  100. Need some tube help!
  101. Need Help Biasing TRV-M300SE Amps
  102. Will this supply work?
  103. First foray into SET, design for your comment
  104. Help understanding a few Ohm's law calculations
  105. Hum in left channer - rogers cadet 3
  106. Need help on understanding AudioResearch like output stage
  107. Help finding 2A3 integrated 2 stage design
  108. 75 / 2A6 Spice Model?
  109. Vacuum Tube DAC
  110. Need help wiring CT transformer
  111. What is this component in my tube amp?
  112. What type of amp should I make with this? Schematic help also needed
  113. 6418 tube preamplifier - Oatley Electronics
  114. Black out coused demage in tube output stage
  115. Need help adding a master volume, and some troubleshooting ...
  116. Other uses for your 807's
  117. Ballantyne output Iron
  118. Power Trafo & Choke headroom
  119. Bare R Cores and bobbins, where???
  120. Plate chokes
  121. Has anyone done anything with the 6112 tube?
  122. el84 amp advice
  123. About to be scammed - bigtime
  124. Dynaco PAS3 -- New Cap board installed
  125. Throw it on the heap... SSE
  126. Loose Tube Bases
  127. 12E1 Triode PP, Any Suggestion?
  128. dac output stage with 5687 pp
  129. Help needed with my Epi Valve Jr
  130. Baby Tube Subwoofer Amp help wanted
  131. 12BH7 and the Simple SE?
  132. "The Bursar" Push-Pull Amplifier
  133. Needed - Advice on tubelab Simple SE build
  134. Oil filled caps - how are they made? DIY caps?
  135. EL34 schematic question
  136. Newb B9A question
  137. 6889 in the Simple SE - misc observations
  138. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  139. 01A tube amp Schematic???
  140. Tubelab's own forum
  141. Are there elegant ways to prevent huge power-on plops?
  142. New EL84 Push-Pull Monoblock
  143. Just to laugh...
  144. QUAD II Stereo Set Up
  145. hammond ao68/7591 question
  146. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  147. How to run a square wave test on an OPT??
  148. Vanderveen 73 Watt valve amplifier PR20HE-S2
  149. 6LU8 Spud - Request for comments
  150. Increasing Output Power for the Engineer's Amplifier
  151. Amperex
  152. A Single Ended presentation
  153. Single-endet Stereo Amp KT88, 6L6, 6P3S
  154. My new 6H30 pre
  155. amplifier bias
  156. Distortion measurements on Meng 6P1
  157. What's wrong with SE Cad?
  158. Observations
  159. p2p aikido phono finished!
  160. 6AC10 tubes
  161. Tricked On Ebay!
  162. Last newbe queston for today, shielding
  163. Pot actoss the filaments
  164. How to adjust summetry?
  165. Tube swap THD
  166. Yarland 34A - Crunch sound, now not the same, any ideas?
  167. Amp SE using F2a tube
  168. WEST-CAP, How about sonic reputation
  169. New 300B JEL/Walton Builder's thread
  170. The worlds least efficient amplifier
  171. Shuguang 6L6GCR and 6550 - Your Experience Please
  172. Bogen CHB-35 - guitar tube amp conversion (another)
  173. Help me identify these Caps! (hamfest find)
  174. nM scale Valves
  175. Orientation of E-I core OPT and toroidal power transformer
  176. Baldwin Iron
  177. Carver super 7
  178. Question:disadvantages for using a SE OPT on parafeed?
  179. CF after gain stage
  180. New to Tubes, just bought first tube amp
  181. Sonic Frontiers SFP-1 mods?
  182. AES tube brand mixing..
  183. Hum with EL84 Push-Pull
  184. Low Voltage Tube Preamplifier
  185. 27 driving 2A3/45/ or 300B
  186. Tube pre-amp for a vehicle?
  187. Meng Yue Mini schematic?
  188. Do you know this guy?
  189. Triode Pentode combo tubes
  190. M8136 M8137 Mullard
  191. suppo with vinyl?
  192. small binding post for TT ground
  193. 27 Filaments DC in series
  194. Music Angel KT88 hard wired
  195. Nice! First CCS.
  196. bizarre bias, ST-70 experts step inside
  197. hammond power tx 200series update
  198. Volts D.C. panel meter for B+
  199. What is the best tube amp??
  200. 6GM8 Hickok test settings?
  201. NASA space-age tube for audio use
  202. trouble matching line level to guitar amp input level...any help?
  203. ECL86/6GW8 Console opinions
  204. Bad tubes wanted for tester testing
  205. 7868 tube biasing and output trans protection
  206. second build, recommendations , thoughts
  207. Changing Electra-Print DRD45
  208. ruTubes.com. Anyone dealt with them?
  209. output transformer manufacturer
  210. no resistor values........
  211. Gz34 + otl 6n23p
  212. Jukebox Iron
  213. converting tube rectifier to solid state rectifier.
  214. Help please, Jolida 202a hum.
  215. Amperex Bugle Boy tube???
  216. What's a reasonable amount of power-supply ripple?
  217. Vintage tube amp Aux In To CD In
  218. mounting TO-220 devices
  219. My first valve amp - help appreciated :)
  220. Plasma ball in tube
  221. Nagra's engineers at work.
  222. what just happened? Plate glowing
  223. "Mullard 5-20 KT88 PP blocks!
  224. CCS transistor choices
  225. Simple SE parts "Kit"
  226. capacitor upgrade on my tube phono stage
  227. Microphone Preamp
  228. 6N2 swap
  229. K12M / K12G Current Draw
  230. Best china amp?
  231. Hagtech Clarion 2A3 SET
  232. Tubelab Simple SE Schematic
  233. new idea for a tube power amp
  234. help choose between two preamps
  235. Need a MC phono stage, do i need a pre as well?
  236. What the difference between 7591a & 7868
  237. High Voltage Huge Storage CAPS for that Ultimate Valve Amp
  238. Need a good phono stage design..
  239. getting a pop when i power down, help
  240. Japan vs US output tx
  241. My own RIAA tube preamp
  242. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  243. Lab Power Supply
  244. diy MESA pre as 3rd channel on guitar amp? - Need Advise!
  245. Learning to measure question
  246. Anyone using silver secondary (or PSSS) output tx
  247. Cary audio design CAD-211
  248. mains overvoltage what to do?
  249. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  250. Jean Hiraga SE Amplifier Power Supply

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