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  1. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  2. RCA mystery tube help
  3. Sub-Miniature Tubes - Low Voltage
  4. True direct-coupled PP amp
  5. "Radical" twist on an all DHT phonostage
  6. input tubes for 300b
  7. JE Labs simple 2a3 filiment tranny, 1 or 2?
  8. ebay Valve Preamps boards for 18 !
  9. Smoothing caps
  10. Spud issues - a little help, please
  11. Has anyone here built something with this super triode?
  12. What is this part in old radio?
  13. Has anyone done anything with a 5977 sub-mini
  14. Driving EQ from kathode resistor
  15. Understanding CCS vs CVS
  16. Can you believe this!
  17. help with my humming valve amp
  18. Picking tubes for SimpleSE-ish amplifier
  19. 6gk5/ECC88 Phono any comments.
  20. Meng Yue X1 6P1 amp (NOT the mini)
  21. Basic HiFi Tube Amp Layout? Please?
  22. stupid switch question
  23. Max Current of James JS-6123HS Transformer
  24. How do you determine a driver stage?
  25. SUPER cheap nos tubes if you live in california.
  26. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  27. Can't get adjustable reg to work
  28. 9 volt tube preamp.
  29. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  30. Equivalent to IXCP10M45S?
  31. Looking for non-DRD 300B using D3a as driver
  32. Akai M8 rebuild/restore/will-this-work?
  33. space charge 12fx8 amp or preamp schematic?
  34. Help with setup to trace UL curves
  35. My KT88 Williamson Amp Build
  36. UV 203A any good for audio ?
  37. What gives with this square wave?
  38. bottlehead paramour PT
  39. DC filament supply without electrolytic(s)?
  40. Looking for R Core power trafo and choke
  41. PP tube amp for bi-amping : above 400 hz
  42. 6N6P question
  43. Integrated valve amplifier : to buy or to build
  44. Lookin for an ST-70-like project
  45. Formula for Zout of diff pair
  46. 6SL7 and Crossovers
  47. Meng Yue: EL34 or 6P1?
  48. Power Transformers and chokes
  49. nos amperex authentic? label doesn't rub off
  50. Software analysis using tube analog circuit Audio Note Kit 1
  51. Webster Amps,Racine Wis.
  52. Help figuring out resistor values
  53. Small (Novel) Tube Rectifiers?
  54. Conrad Johnson ART preamp question.
  55. pd510
  56. i want to build 3D21WB tube PP amp
  57. How to choose an optimal load line for a cathode follwer buffer?
  58. removing sound controlls...
  59. Pentode cathode follower output impedance
  60. Telematic KC401
  61. ebay, 7c kit, worth it?
  62. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  63. Olson AM-158
  64. Check out my KT88 curves
  65. Just another /\|OOB to Tubes....Need Schem Help
  66. Problem with 832A PP amp
  67. Marantz 8b power transformer
  68. New SET Project
  69. Magnavox Model #OFMC26 Tube Stereo
  70. Balancing Servo
  71. Akai M8 Modding Service Required
  72. 12AX7 basics, some questions on wiring
  73. Tube Shield
  74. Choosing an output transformer
  75. Lost in Translation - DIY Japan
  76. Ebay KT88
  77. Filament voltages - an idle curiosity
  78. Project caused by need
  79. PSU issues, advice needed.
  80. Question about cathode voltage
  81. NOS/NIB tubes what does it mean?
  82. Help to identify transformers
  83. DIY tube amp power supply
  84. Socket Saver
  85. Need some tube help!
  86. Need Help Biasing TRV-M300SE Amps
  87. Will this supply work?
  88. First foray into SET, design for your comment
  89. Help understanding a few Ohm's law calculations
  90. Hum in left channer - rogers cadet 3
  91. Need help on understanding AudioResearch like output stage
  92. Help finding 2A3 integrated 2 stage design
  93. 75 / 2A6 Spice Model?
  94. Vacuum Tube DAC
  95. Need help wiring CT transformer
  96. What is this component in my tube amp?
  97. What type of amp should I make with this? Schematic help also needed
  98. 6418 tube preamplifier - Oatley Electronics
  99. Black out coused demage in tube output stage
  100. Need help adding a master volume, and some troubleshooting ...
  101. Other uses for your 807's
  102. Ballantyne output Iron
  103. Power Trafo & Choke headroom
  104. Bare R Cores and bobbins, where???
  105. Plate chokes
  106. Has anyone done anything with the 6112 tube?
  107. el84 amp advice
  108. About to be scammed - bigtime
  109. Dynaco PAS3 -- New Cap board installed
  110. Loose Tube Bases
  111. 12E1 Triode PP, Any Suggestion?
  112. dac output stage with 5687 pp
  113. Baby Tube Subwoofer Amp help wanted
  114. "The Bursar" Push-Pull Amplifier
  115. EL34 schematic question
  116. Newb B9A question
  117. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  118. 01A tube amp Schematic???
  119. Are there elegant ways to prevent huge power-on plops?
  120. New EL84 Push-Pull Monoblock
  121. Just to laugh...
  122. QUAD II Stereo Set Up
  123. hammond ao68/7591 question
  124. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  125. How to run a square wave test on an OPT??
  126. Vanderveen 73 Watt valve amplifier PR20HE-S2
  127. 6LU8 Spud - Request for comments
  128. Increasing Output Power for the Engineer's Amplifier
  129. Amperex
  130. A Single Ended presentation
  131. Single-endet Stereo Amp KT88, 6L6, 6P3S
  132. My new 6H30 pre
  133. amplifier bias
  134. Distortion measurements on Meng 6P1
  135. What's wrong with SE Cad?
  136. Observations
  137. p2p aikido phono finished!
  138. 6AC10 tubes
  139. Tricked On Ebay!
  140. Last newbe queston for today, shielding
  141. Pot actoss the filaments
  142. How to adjust summetry?
  143. Tube swap THD
  144. Yarland 34A - Crunch sound, now not the same, any ideas?
  145. Amp SE using F2a tube
  146. WEST-CAP, How about sonic reputation
  147. New 300B JEL/Walton Builder's thread
  148. The worlds least efficient amplifier
  149. Shuguang 6L6GCR and 6550 - Your Experience Please
  150. nM scale Valves
  151. Orientation of E-I core OPT and toroidal power transformer
  152. Baldwin Iron
  153. Carver super 7
  154. Question:disadvantages for using a SE OPT on parafeed?
  155. CF after gain stage
  156. New to Tubes, just bought first tube amp
  157. Sonic Frontiers SFP-1 mods?
  158. AES tube brand mixing..
  159. Hum with EL84 Push-Pull
  160. Low Voltage Tube Preamplifier
  161. 27 driving 2A3/45/ or 300B
  162. Tube pre-amp for a vehicle?
  163. Meng Yue Mini schematic?
  164. Do you know this guy?
  165. Triode Pentode combo tubes
  166. M8136 M8137 Mullard
  167. suppo with vinyl?
  168. small binding post for TT ground
  169. 27 Filaments DC in series
  170. Music Angel KT88 hard wired
  171. Nice! First CCS.
  172. bizarre bias, ST-70 experts step inside
  173. hammond power tx 200series update
  174. What is the best tube amp??
  175. NASA space-age tube for audio use
  176. ECL86/6GW8 Console opinions
  177. Bad tubes wanted for tester testing
  178. 7868 tube biasing and output trans protection
  179. second build, recommendations , thoughts
  180. Changing Electra-Print DRD45
  181. ruTubes.com. Anyone dealt with them?
  182. output transformer manufacturer
  183. no resistor values........
  184. Gz34 + otl 6n23p
  185. Jukebox Iron
  186. converting tube rectifier to solid state rectifier.
  187. Help please, Jolida 202a hum.
  188. Amperex Bugle Boy tube???
  189. What's a reasonable amount of power-supply ripple?
  190. Vintage tube amp Aux In To CD In
  191. mounting TO-220 devices
  192. My first valve amp - help appreciated :)
  193. Plasma ball in tube
  194. Nagra's engineers at work.
  195. what just happened? Plate glowing
  196. "Mullard 5-20 KT88 PP blocks!
  197. CCS transistor choices
  198. capacitor upgrade on my tube phono stage
  199. Microphone Preamp
  200. 6N2 swap
  201. K12M / K12G Current Draw
  202. Best china amp?
  203. Hagtech Clarion 2A3 SET
  204. new idea for a tube power amp
  205. help choose between two preamps
  206. Need a MC phono stage, do i need a pre as well?
  207. What the difference between 7591a & 7868
  208. Need a good phono stage design..
  209. getting a pop when i power down, help
  210. Japan vs US output tx
  211. My own RIAA tube preamp
  212. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  213. Learning to measure question
  214. Anyone using silver secondary (or PSSS) output tx
  215. Cary audio design CAD-211
  216. mains overvoltage what to do?
  217. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  218. Jean Hiraga SE Amplifier Power Supply
  219. channel imbalance!!!! need help
  220. ESRC Dollar Sale - Going, Going...
  221. Post pics of your glowing tubes
  222. PCB Layout for tube amp
  223. 530V low-ish dropout regulator?
  224. were can i get transformers from
  225. 6N9P data sheet
  226. Newbie questions - RH84 mods
  227. TriodeElectronics Mk3 for rank noob?
  228. 5718 preamp
  229. 12B4 the pre for me?
  230. Anyone used C3G to drive a 2A3 before?
  231. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  232. Bogen MX60A Schematics
  233. Nasty pop when I power down
  234. Timer for tube hours
  235. Personal Tube Amp DIY Project
  236. Common cathode linestage with 6080
  237. Fingernail polish?
  238. Wintersweet HighVividity Amplifer finalized
  239. Iron loaded preamp, any thoughts?
  240. Tetra Phono Preamp as a DAC analog stage
  241. EL84 Plate Dissipation
  242. 12AU7 Amp?
  243. Toroidal Chokes
  244. Using a voltage converter transformer
  245. Regulated PSU question
  246. please help me change this
  247. Stromberg-Carlson Identification Help
  248. pi filter variations
  249. How do I change this design from EL34 to 6L6?
  250. Sun Audio SV-300B MKII DIY

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