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  1. Can't get adjustable reg to work
  2. 9 volt tube preamp.
  3. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  4. Equivalent to IXCP10M45S?
  5. Looking for non-DRD 300B using D3a as driver
  6. Akai M8 rebuild/restore/will-this-work?
  7. space charge 12fx8 amp or preamp schematic?
  8. Help with setup to trace UL curves
  9. My KT88 Williamson Amp Build
  10. UV 203A any good for audio ?
  11. What gives with this square wave?
  12. bottlehead paramour PT
  13. DC filament supply without electrolytic(s)?
  14. Looking for R Core power trafo and choke
  15. PP tube amp for bi-amping : above 400 hz
  16. 6N6P question
  17. Integrated valve amplifier : to buy or to build
  18. Lookin for an ST-70-like project
  19. Formula for Zout of diff pair
  20. 6SL7 and Crossovers
  21. Meng Yue: EL34 or 6P1?
  22. Power Transformers and chokes
  23. nos amperex authentic? label doesn't rub off
  24. Software analysis using tube analog circuit Audio Note Kit 1
  25. Webster Amps,Racine Wis.
  26. Help figuring out resistor values
  27. Small (Novel) Tube Rectifiers?
  28. Conrad Johnson ART preamp question.
  29. pd510
  30. i want to build 3D21WB tube PP amp
  31. How to choose an optimal load line for a cathode follwer buffer?
  32. removing sound controlls...
  33. Pentode cathode follower output impedance
  34. Telematic KC401
  35. ebay, 7c kit, worth it?
  36. Mullard 5-10 for guitar use?
  37. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  38. Olson AM-158
  39. Check out my KT88 curves
  40. Just another /\|OOB to Tubes....Need Schem Help
  41. Problem with 832A PP amp
  42. Marantz 8b power transformer
  43. New SET Project
  44. Magnavox Model #OFMC26 Tube Stereo
  45. Balancing Servo
  46. Akai M8 Modding Service Required
  47. 12AX7 basics, some questions on wiring
  48. Hickok Model 600A
  49. Valve for Marshall AVT275 amp
  50. Tube Shield
  51. Choosing an output transformer
  52. Lost in Translation - DIY Japan
  53. Ebay KT88
  54. Filament voltages - an idle curiosity
  55. Project caused by need
  56. PSU issues, advice needed.
  57. Tubelab SE Driver Bias Help
  58. Question about cathode voltage
  59. NOS/NIB tubes what does it mean?
  60. Help to identify transformers
  61. Guitar amp schematic for PPP EL84
  62. DIY tube amp power supply
  63. Socket Saver
  64. Need some tube help!
  65. Need Help Biasing TRV-M300SE Amps
  66. Will this supply work?
  67. First foray into SET, design for your comment
  68. Help understanding a few Ohm's law calculations
  69. Hum in left channer - rogers cadet 3
  70. Need help on understanding AudioResearch like output stage
  71. Help finding 2A3 integrated 2 stage design
  72. 75 / 2A6 Spice Model?
  73. Vacuum Tube DAC
  74. Need help wiring CT transformer
  75. What is this component in my tube amp?
  76. What type of amp should I make with this? Schematic help also needed
  77. 6418 tube preamplifier - Oatley Electronics
  78. Black out coused demage in tube output stage
  79. Need help adding a master volume, and some troubleshooting ...
  80. Other uses for your 807's
  81. Ballantyne output Iron
  82. Power Trafo & Choke headroom
  83. Bare R Cores and bobbins, where???
  84. Plate chokes
  85. Has anyone done anything with the 6112 tube?
  86. el84 amp advice
  87. About to be scammed - bigtime
  88. Dynaco PAS3 -- New Cap board installed
  89. Throw it on the heap... SSE
  90. Loose Tube Bases
  91. 12E1 Triode PP, Any Suggestion?
  92. dac output stage with 5687 pp
  93. Help needed with my Epi Valve Jr
  94. Baby Tube Subwoofer Amp help wanted
  95. 12BH7 and the Simple SE?
  96. "The Bursar" Push-Pull Amplifier
  97. Needed - Advice on tubelab Simple SE build
  98. Oil filled caps - how are they made? DIY caps?
  99. EL34 schematic question
  100. Newb B9A question
  101. 6889 in the Simple SE - misc observations
  102. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  103. 01A tube amp Schematic???
  104. Tubelab's own forum
  105. Are there elegant ways to prevent huge power-on plops?
  106. New EL84 Push-Pull Monoblock
  107. Just to laugh...
  108. QUAD II Stereo Set Up
  109. hammond ao68/7591 question
  110. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  111. How to run a square wave test on an OPT??
  112. Vanderveen 73 Watt valve amplifier PR20HE-S2
  113. 6LU8 Spud - Request for comments
  114. Increasing Output Power for the Engineer's Amplifier
  115. Amperex
  116. A Single Ended presentation
  117. Single-endet Stereo Amp KT88, 6L6, 6P3S
  118. My new 6H30 pre
  119. amplifier bias
  120. Distortion measurements on Meng 6P1
  121. What's wrong with SE Cad?
  122. Observations
  123. p2p aikido phono finished!
  124. 6AC10 tubes
  125. Tricked On Ebay!
  126. Last newbe queston for today, shielding
  127. Pot actoss the filaments
  128. How to adjust summetry?
  129. Tube swap THD
  130. Yarland 34A - Crunch sound, now not the same, any ideas?
  131. Amp SE using F2a tube
  132. WEST-CAP, How about sonic reputation
  133. New 300B JEL/Walton Builder's thread
  134. The worlds least efficient amplifier
  135. Shuguang 6L6GCR and 6550 - Your Experience Please
  136. Bogen CHB-35 - guitar tube amp conversion (another)
  137. Help me identify these Caps! (hamfest find)
  138. nM scale Valves
  139. Orientation of E-I core OPT and toroidal power transformer
  140. Baldwin Iron
  141. Carver super 7
  142. Question:disadvantages for using a SE OPT on parafeed?
  143. CF after gain stage
  144. New to Tubes, just bought first tube amp
  145. Sonic Frontiers SFP-1 mods?
  146. AES tube brand mixing..
  147. Hum with EL84 Push-Pull
  148. Low Voltage Tube Preamplifier
  149. 27 driving 2A3/45/ or 300B
  150. Tube pre-amp for a vehicle?
  151. Meng Yue Mini schematic?
  152. Do you know this guy?
  153. Triode Pentode combo tubes
  154. M8136 M8137 Mullard
  155. suppo with vinyl?
  156. small binding post for TT ground
  157. 27 Filaments DC in series
  158. Music Angel KT88 hard wired
  159. Nice! First CCS.
  160. bizarre bias, ST-70 experts step inside
  161. hammond power tx 200series update
  162. Volts D.C. panel meter for B+
  163. What is the best tube amp??
  164. 6GM8 Hickok test settings?
  165. NASA space-age tube for audio use
  166. trouble matching line level to guitar amp input level...any help?
  167. ECL86/6GW8 Console opinions
  168. Bad tubes wanted for tester testing
  169. 7868 tube biasing and output trans protection
  170. second build, recommendations , thoughts
  171. Changing Electra-Print DRD45
  172. ruTubes.com. Anyone dealt with them?
  173. output transformer manufacturer
  174. no resistor values........
  175. Gz34 + otl 6n23p
  176. Jukebox Iron
  177. converting tube rectifier to solid state rectifier.
  178. Help please, Jolida 202a hum.
  179. Amperex Bugle Boy tube???
  180. What's a reasonable amount of power-supply ripple?
  181. Vintage tube amp Aux In To CD In
  182. mounting TO-220 devices
  183. My first valve amp - help appreciated :)
  184. Plasma ball in tube
  185. Nagra's engineers at work.
  186. what just happened? Plate glowing
  187. "Mullard 5-20 KT88 PP blocks!
  188. CCS transistor choices
  189. Simple SE parts "Kit"
  190. capacitor upgrade on my tube phono stage
  191. Microphone Preamp
  192. 6N2 swap
  193. K12M / K12G Current Draw
  194. Best china amp?
  195. Hagtech Clarion 2A3 SET
  196. Tubelab Simple SE Schematic
  197. new idea for a tube power amp
  198. help choose between two preamps
  199. Need a MC phono stage, do i need a pre as well?
  200. What the difference between 7591a & 7868
  201. High Voltage Huge Storage CAPS for that Ultimate Valve Amp
  202. Need a good phono stage design..
  203. getting a pop when i power down, help
  204. Japan vs US output tx
  205. My own RIAA tube preamp
  206. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  207. Lab Power Supply
  208. diy MESA pre as 3rd channel on guitar amp? - Need Advise!
  209. Learning to measure question
  210. Anyone using silver secondary (or PSSS) output tx
  211. Cary audio design CAD-211
  212. mains overvoltage what to do?
  213. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  214. Jean Hiraga SE Amplifier Power Supply
  215. TubeLab SE, Finally
  216. channel imbalance!!!! need help
  217. ESRC Dollar Sale - Going, Going...
  218. Post pics of your glowing tubes
  219. PCB Layout for tube amp
  220. 530V low-ish dropout regulator?
  221. were can i get transformers from
  222. 6N9P data sheet
  223. Newbie questions - RH84 mods
  224. TriodeElectronics Mk3 for rank noob?
  225. 5718 preamp
  226. 12B4 the pre for me?
  227. Anyone used C3G to drive a 2A3 before?
  228. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  229. Bogen MX60A Schematics
  230. Nasty pop when I power down
  231. Timer for tube hours
  232. Personal Tube Amp DIY Project
  233. Common cathode linestage with 6080
  234. Fingernail polish?
  235. Tube Lab Simple SE with interstage transformer
  236. Wintersweet HighVividity Amplifer finalized
  237. Iron loaded preamp, any thoughts?
  238. Tetra Phono Preamp as a DAC analog stage
  239. EL84 Plate Dissipation
  240. bogen m330a -> 5f6a bassman
  241. 12AU7 Amp?
  242. Toroidal Chokes
  243. Using a voltage converter transformer
  244. Regulated PSU question
  245. please help me change this
  246. Stromberg-Carlson Identification Help
  247. pi filter variations
  248. How do I change this design from EL34 to 6L6?
  249. Sun Audio SV-300B MKII DIY
  250. 230-115V step down transformer earthing

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