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  1. Sovtek 6550WA?
  2. how to make a tube gyrator eq?
  3. Transformer needed or "solid state guy needs help from tube guys"
  4. Differential input, SET output
  5. FFT of PSUD2 output?
  6. Differential push-pull design question
  7. Any EF184 users?
  8. 30P1S - How to use them?
  9. st-70 as good as it gets?
  10. Subbing in a TVC - input load Q
  11. Chinese tubes, new ones or relabeled?
  12. 6AV6 => 12AX7 question
  13. 845 & 300b tubes
  14. Sourcing sockets and plugs for power supply umbilicals
  15. Sub mini history question ...
  16. 6DX8 Amp for Headphones and Low Volume Needs
  17. Surplus Voltage Solution
  18. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  19. RCA mystery tube help
  20. Sub-Miniature Tubes - Low Voltage
  21. True direct-coupled PP amp
  22. "Radical" twist on an all DHT phonostage
  23. input tubes for 300b
  24. JE Labs simple 2a3 filiment tranny, 1 or 2?
  25. ebay Valve Preamps boards for 18 !
  26. Smoothing caps
  27. Spud issues - a little help, please
  28. Has anyone here built something with this super triode?
  29. What is this part in old radio?
  30. Has anyone done anything with a 5977 sub-mini
  31. Driving EQ from kathode resistor
  32. Understanding CCS vs CVS
  33. Can you believe this!
  34. help with my humming valve amp
  35. Picking tubes for SimpleSE-ish amplifier
  36. 6gk5/ECC88 Phono any comments.
  37. Meng Yue X1 6P1 amp (NOT the mini)
  38. Basic HiFi Tube Amp Layout? Please?
  39. stupid switch question
  40. Max Current of James JS-6123HS Transformer
  41. How do you determine a driver stage?
  42. SUPER cheap nos tubes if you live in california.
  43. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  44. Can't get adjustable reg to work
  45. 9 volt tube preamp.
  46. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  47. Equivalent to IXCP10M45S?
  48. Looking for non-DRD 300B using D3a as driver
  49. Akai M8 rebuild/restore/will-this-work?
  50. space charge 12fx8 amp or preamp schematic?
  51. Help with setup to trace UL curves
  52. My KT88 Williamson Amp Build
  53. UV 203A any good for audio ?
  54. What gives with this square wave?
  55. bottlehead paramour PT
  56. DC filament supply without electrolytic(s)?
  57. Looking for R Core power trafo and choke
  58. PP tube amp for bi-amping : above 400 hz
  59. 6N6P question
  60. Integrated valve amplifier : to buy or to build
  61. Lookin for an ST-70-like project
  62. Formula for Zout of diff pair
  63. 6SL7 and Crossovers
  64. Meng Yue: EL34 or 6P1?
  65. Power Transformers and chokes
  66. nos amperex authentic? label doesn't rub off
  67. Software analysis using tube analog circuit Audio Note Kit 1
  68. Webster Amps,Racine Wis.
  69. Help figuring out resistor values
  70. Small (Novel) Tube Rectifiers?
  71. Conrad Johnson ART preamp question.
  72. pd510
  73. i want to build 3D21WB tube PP amp
  74. How to choose an optimal load line for a cathode follwer buffer?
  75. removing sound controlls...
  76. Pentode cathode follower output impedance
  77. Telematic KC401
  78. ebay, 7c kit, worth it?
  79. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  80. Olson AM-158
  81. Check out my KT88 curves
  82. Just another /\|OOB to Tubes....Need Schem Help
  83. Problem with 832A PP amp
  84. Marantz 8b power transformer
  85. New SET Project
  86. Magnavox Model #OFMC26 Tube Stereo
  87. Balancing Servo
  88. Akai M8 Modding Service Required
  89. 12AX7 basics, some questions on wiring
  90. Tube Shield
  91. Choosing an output transformer
  92. Lost in Translation - DIY Japan
  93. Ebay KT88
  94. Filament voltages - an idle curiosity
  95. Project caused by need
  96. PSU issues, advice needed.
  97. Question about cathode voltage
  98. NOS/NIB tubes what does it mean?
  99. Help to identify transformers
  100. DIY tube amp power supply
  101. Socket Saver
  102. Need some tube help!
  103. Need Help Biasing TRV-M300SE Amps
  104. Will this supply work?
  105. First foray into SET, design for your comment
  106. Help understanding a few Ohm's law calculations
  107. Hum in left channer - rogers cadet 3
  108. Need help on understanding AudioResearch like output stage
  109. Help finding 2A3 integrated 2 stage design
  110. 75 / 2A6 Spice Model?
  111. Vacuum Tube DAC
  112. Need help wiring CT transformer
  113. What is this component in my tube amp?
  114. What type of amp should I make with this? Schematic help also needed
  115. 6418 tube preamplifier - Oatley Electronics
  116. Black out coused demage in tube output stage
  117. Need help adding a master volume, and some troubleshooting ...
  118. Other uses for your 807's
  119. Ballantyne output Iron
  120. Power Trafo & Choke headroom
  121. Bare R Cores and bobbins, where???
  122. Plate chokes
  123. Has anyone done anything with the 6112 tube?
  124. el84 amp advice
  125. About to be scammed - bigtime
  126. Dynaco PAS3 -- New Cap board installed
  127. Loose Tube Bases
  128. 12E1 Triode PP, Any Suggestion?
  129. dac output stage with 5687 pp
  130. Baby Tube Subwoofer Amp help wanted
  131. "The Bursar" Push-Pull Amplifier
  132. EL34 schematic question
  133. Newb B9A question
  134. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  135. 01A tube amp Schematic???
  136. Are there elegant ways to prevent huge power-on plops?
  137. New EL84 Push-Pull Monoblock
  138. Just to laugh...
  139. QUAD II Stereo Set Up
  140. hammond ao68/7591 question
  141. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  142. How to run a square wave test on an OPT??
  143. Vanderveen 73 Watt valve amplifier PR20HE-S2
  144. 6LU8 Spud - Request for comments
  145. Increasing Output Power for the Engineer's Amplifier
  146. Amperex
  147. A Single Ended presentation
  148. Single-endet Stereo Amp KT88, 6L6, 6P3S
  149. My new 6H30 pre
  150. amplifier bias
  151. Distortion measurements on Meng 6P1
  152. What's wrong with SE Cad?
  153. Observations
  154. p2p aikido phono finished!
  155. 6AC10 tubes
  156. Tricked On Ebay!
  157. Last newbe queston for today, shielding
  158. Pot actoss the filaments
  159. How to adjust summetry?
  160. Tube swap THD
  161. Yarland 34A - Crunch sound, now not the same, any ideas?
  162. Amp SE using F2a tube
  163. WEST-CAP, How about sonic reputation
  164. New 300B JEL/Walton Builder's thread
  165. The worlds least efficient amplifier
  166. Shuguang 6L6GCR and 6550 - Your Experience Please
  167. nM scale Valves
  168. Orientation of E-I core OPT and toroidal power transformer
  169. Baldwin Iron
  170. Carver super 7
  171. Question:disadvantages for using a SE OPT on parafeed?
  172. CF after gain stage
  173. New to Tubes, just bought first tube amp
  174. Sonic Frontiers SFP-1 mods?
  175. AES tube brand mixing..
  176. Hum with EL84 Push-Pull
  177. Low Voltage Tube Preamplifier
  178. 27 driving 2A3/45/ or 300B
  179. Tube pre-amp for a vehicle?
  180. Meng Yue Mini schematic?
  181. Do you know this guy?
  182. Triode Pentode combo tubes
  183. M8136 M8137 Mullard
  184. suppo with vinyl?
  185. small binding post for TT ground
  186. 27 Filaments DC in series
  187. Music Angel KT88 hard wired
  188. Nice! First CCS.
  189. bizarre bias, ST-70 experts step inside
  190. hammond power tx 200series update
  191. What is the best tube amp??
  192. NASA space-age tube for audio use
  193. ECL86/6GW8 Console opinions
  194. Bad tubes wanted for tester testing
  195. 7868 tube biasing and output trans protection
  196. second build, recommendations , thoughts
  197. Changing Electra-Print DRD45
  198. ruTubes.com. Anyone dealt with them?
  199. output transformer manufacturer
  200. no resistor values........
  201. Gz34 + otl 6n23p
  202. Jukebox Iron
  203. converting tube rectifier to solid state rectifier.
  204. Help please, Jolida 202a hum.
  205. Amperex Bugle Boy tube???
  206. What's a reasonable amount of power-supply ripple?
  207. Vintage tube amp Aux In To CD In
  208. mounting TO-220 devices
  209. My first valve amp - help appreciated :)
  210. Plasma ball in tube
  211. Nagra's engineers at work.
  212. what just happened? Plate glowing
  213. "Mullard 5-20 KT88 PP blocks!
  214. CCS transistor choices
  215. capacitor upgrade on my tube phono stage
  216. Microphone Preamp
  217. 6N2 swap
  218. K12M / K12G Current Draw
  219. Best china amp?
  220. Hagtech Clarion 2A3 SET
  221. new idea for a tube power amp
  222. help choose between two preamps
  223. Need a MC phono stage, do i need a pre as well?
  224. What the difference between 7591a & 7868
  225. Need a good phono stage design..
  226. getting a pop when i power down, help
  227. Japan vs US output tx
  228. My own RIAA tube preamp
  229. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  230. Learning to measure question
  231. Anyone using silver secondary (or PSSS) output tx
  232. Cary audio design CAD-211
  233. mains overvoltage what to do?
  234. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  235. Jean Hiraga SE Amplifier Power Supply
  236. channel imbalance!!!! need help
  237. ESRC Dollar Sale - Going, Going...
  238. Post pics of your glowing tubes
  239. PCB Layout for tube amp
  240. 530V low-ish dropout regulator?
  241. were can i get transformers from
  242. 6N9P data sheet
  243. Newbie questions - RH84 mods
  244. TriodeElectronics Mk3 for rank noob?
  245. 5718 preamp
  246. 12B4 the pre for me?
  247. Anyone used C3G to drive a 2A3 before?
  248. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  249. Bogen MX60A Schematics
  250. Nasty pop when I power down

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