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  1. EL84 Unused pins safe to connect?
  2. 6BQ5/EL84 tube buffer questions
  3. How much power do I need?
  4. Tube buffer/preamp. Where to place voltage divider?
  5. Schematic wanted for VTL Preamp "Maximal"
  6. modified GEC 88-50
  7. Zenith 7B31 Help
  8. Do swingers always buzz when they swing?
  9. 6at6 tube? What can i use it for?
  10. Sovtek 6550WA?
  11. how to make a tube gyrator eq?
  12. Transformer needed or "solid state guy needs help from tube guys"
  13. Differential input, SET output
  14. FFT of PSUD2 output?
  15. Differential push-pull design question
  16. Any EF184 users?
  17. 30P1S - How to use them?
  18. st-70 as good as it gets?
  19. Subbing in a TVC - input load Q
  20. Chinese tubes, new ones or relabeled?
  21. 6AV6 => 12AX7 question
  22. crate vintage club 50 2x12 keeps blowing preamp tubes
  23. 845 & 300b tubes
  24. Sourcing sockets and plugs for power supply umbilicals
  25. Sub mini history question ...
  26. 6DX8 Amp for Headphones and Low Volume Needs
  27. Surplus Voltage Solution
  28. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  29. RCA mystery tube help
  30. Breadboarding/Prototyping - How to and Tips/Tricks
  31. Sub-Miniature Tubes - Low Voltage
  32. True direct-coupled PP amp
  33. "Radical" twist on an all DHT phonostage
  34. input tubes for 300b
  35. JE Labs simple 2a3 filiment tranny, 1 or 2?
  36. ebay Valve Preamps boards for 18 !
  37. Smoothing caps
  38. Spud issues - a little help, please
  39. GLY513 in PS of Simple SE / PP and OTL
  40. Has anyone here built something with this super triode?
  41. What is this part in old radio?
  42. Has anyone done anything with a 5977 sub-mini
  43. Driving EQ from kathode resistor
  44. Understanding CCS vs CVS
  45. Can you believe this!
  46. help with my humming valve amp
  47. Picking tubes for SimpleSE-ish amplifier
  48. 6gk5/ECC88 Phono any comments.
  49. Meng Yue X1 6P1 amp (NOT the mini)
  50. Basic HiFi Tube Amp Layout? Please?
  51. stupid switch question
  52. Max Current of James JS-6123HS Transformer
  53. How do you determine a driver stage?
  54. SUPER cheap nos tubes if you live in california.
  55. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  56. a good tube tester?
  57. Can't get adjustable reg to work
  58. 9 volt tube preamp.
  59. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  60. Equivalent to IXCP10M45S?
  61. Looking for non-DRD 300B using D3a as driver
  62. Akai M8 rebuild/restore/will-this-work?
  63. space charge 12fx8 amp or preamp schematic?
  64. Help with setup to trace UL curves
  65. My KT88 Williamson Amp Build
  66. UV 203A any good for audio ?
  67. What gives with this square wave?
  68. bottlehead paramour PT
  69. DC filament supply without electrolytic(s)?
  70. Looking for R Core power trafo and choke
  71. PP tube amp for bi-amping : above 400 hz
  72. 6N6P question
  73. Integrated valve amplifier : to buy or to build
  74. Lookin for an ST-70-like project
  75. Formula for Zout of diff pair
  76. 6SL7 and Crossovers
  77. Meng Yue: EL34 or 6P1?
  78. Power Transformers and chokes
  79. nos amperex authentic? label doesn't rub off
  80. Software analysis using tube analog circuit Audio Note Kit 1
  81. Webster Amps,Racine Wis.
  82. Help figuring out resistor values
  83. Small (Novel) Tube Rectifiers?
  84. Conrad Johnson ART preamp question.
  85. pd510
  86. i want to build 3D21WB tube PP amp
  87. How to choose an optimal load line for a cathode follwer buffer?
  88. removing sound controlls...
  89. Pentode cathode follower output impedance
  90. Telematic KC401
  91. ebay, 7c kit, worth it?
  92. Mullard 5-10 for guitar use?
  93. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  94. Olson AM-158
  95. Check out my KT88 curves
  96. Just another /\|OOB to Tubes....Need Schem Help
  97. Problem with 832A PP amp
  98. Marantz 8b power transformer
  99. New SET Project
  100. Magnavox Model #OFMC26 Tube Stereo
  101. Balancing Servo
  102. Akai M8 Modding Service Required
  103. 12AX7 basics, some questions on wiring
  104. Hickok Model 600A
  105. Valve for Marshall AVT275 amp
  106. Tube Shield
  107. Choosing an output transformer
  108. Lost in Translation - DIY Japan
  109. Ebay KT88
  110. Filament voltages - an idle curiosity
  111. Project caused by need
  112. PSU issues, advice needed.
  113. Tubelab SE Driver Bias Help
  114. Question about cathode voltage
  115. NOS/NIB tubes what does it mean?
  116. Help to identify transformers
  117. Guitar amp schematic for PPP EL84
  118. DIY tube amp power supply
  119. Socket Saver
  120. Need some tube help!
  121. Need Help Biasing TRV-M300SE Amps
  122. Will this supply work?
  123. First foray into SET, design for your comment
  124. Help understanding a few Ohm's law calculations
  125. Hum in left channer - rogers cadet 3
  126. Need help on understanding AudioResearch like output stage
  127. Help finding 2A3 integrated 2 stage design
  128. 75 / 2A6 Spice Model?
  129. Vacuum Tube DAC
  130. Need help wiring CT transformer
  131. What is this component in my tube amp?
  132. What type of amp should I make with this? Schematic help also needed
  133. 6418 tube preamplifier - Oatley Electronics
  134. Black out coused demage in tube output stage
  135. Need help adding a master volume, and some troubleshooting ...
  136. Other uses for your 807's
  137. Ballantyne output Iron
  138. Power Trafo & Choke headroom
  139. Bare R Cores and bobbins, where???
  140. Plate chokes
  141. Has anyone done anything with the 6112 tube?
  142. el84 amp advice
  143. About to be scammed - bigtime
  144. Dynaco PAS3 -- New Cap board installed
  145. Throw it on the heap... SSE
  146. Loose Tube Bases
  147. 12E1 Triode PP, Any Suggestion?
  148. dac output stage with 5687 pp
  149. Help needed with my Epi Valve Jr
  150. Baby Tube Subwoofer Amp help wanted
  151. 12BH7 and the Simple SE?
  152. "The Bursar" Push-Pull Amplifier
  153. Needed - Advice on tubelab Simple SE build
  154. Oil filled caps - how are they made? DIY caps?
  155. EL34 schematic question
  156. Newb B9A question
  157. 6889 in the Simple SE - misc observations
  158. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  159. 01A tube amp Schematic???
  160. Tubelab's own forum
  161. Are there elegant ways to prevent huge power-on plops?
  162. New EL84 Push-Pull Monoblock
  163. Just to laugh...
  164. QUAD II Stereo Set Up
  165. hammond ao68/7591 question
  166. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  167. How to run a square wave test on an OPT??
  168. Vanderveen 73 Watt valve amplifier PR20HE-S2
  169. 6LU8 Spud - Request for comments
  170. Increasing Output Power for the Engineer's Amplifier
  171. Amperex
  172. A Single Ended presentation
  173. Single-endet Stereo Amp KT88, 6L6, 6P3S
  174. My new 6H30 pre
  175. amplifier bias
  176. Distortion measurements on Meng 6P1
  177. What's wrong with SE Cad?
  178. Observations
  179. p2p aikido phono finished!
  180. 6AC10 tubes
  181. Tricked On Ebay!
  182. Last newbe queston for today, shielding
  183. Pot actoss the filaments
  184. How to adjust summetry?
  185. Tube swap THD
  186. Yarland 34A - Crunch sound, now not the same, any ideas?
  187. Amp SE using F2a tube
  188. WEST-CAP, How about sonic reputation
  189. New 300B JEL/Walton Builder's thread
  190. The worlds least efficient amplifier
  191. Shuguang 6L6GCR and 6550 - Your Experience Please
  192. Bogen CHB-35 - guitar tube amp conversion (another)
  193. Help me identify these Caps! (hamfest find)
  194. nM scale Valves
  195. Orientation of E-I core OPT and toroidal power transformer
  196. Baldwin Iron
  197. Carver super 7
  198. Question:disadvantages for using a SE OPT on parafeed?
  199. CF after gain stage
  200. New to Tubes, just bought first tube amp
  201. Sonic Frontiers SFP-1 mods?
  202. AES tube brand mixing..
  203. Hum with EL84 Push-Pull
  204. Low Voltage Tube Preamplifier
  205. 27 driving 2A3/45/ or 300B
  206. Tube pre-amp for a vehicle?
  207. Meng Yue Mini schematic?
  208. Do you know this guy?
  209. Triode Pentode combo tubes
  210. M8136 M8137 Mullard
  211. suppo with vinyl?
  212. small binding post for TT ground
  213. 27 Filaments DC in series
  214. Music Angel KT88 hard wired
  215. Nice! First CCS.
  216. bizarre bias, ST-70 experts step inside
  217. hammond power tx 200series update
  218. Volts D.C. panel meter for B+
  219. What is the best tube amp??
  220. 6GM8 Hickok test settings?
  221. NASA space-age tube for audio use
  222. trouble matching line level to guitar amp input level...any help?
  223. ECL86/6GW8 Console opinions
  224. Bad tubes wanted for tester testing
  225. 7868 tube biasing and output trans protection
  226. second build, recommendations , thoughts
  227. Changing Electra-Print DRD45
  228. ruTubes.com. Anyone dealt with them?
  229. output transformer manufacturer
  230. no resistor values........
  231. Gz34 + otl 6n23p
  232. Jukebox Iron
  233. converting tube rectifier to solid state rectifier.
  234. Help please, Jolida 202a hum.
  235. Amperex Bugle Boy tube???
  236. What's a reasonable amount of power-supply ripple?
  237. Vintage tube amp Aux In To CD In
  238. mounting TO-220 devices
  239. My first valve amp - help appreciated :)
  240. Plasma ball in tube
  241. Nagra's engineers at work.
  242. what just happened? Plate glowing
  243. "Mullard 5-20 KT88 PP blocks!
  244. CCS transistor choices
  245. Simple SE parts "Kit"
  246. capacitor upgrade on my tube phono stage
  247. Microphone Preamp
  248. 6N2 swap
  249. K12M / K12G Current Draw
  250. Best china amp?

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