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  1. 485V Regulated Power Supply
  2. 0B3 Glows Orange
  3. New Reissue tubes...Good/Bad???
  4. PP amp design , your thoughts please.
  5. Aikido + Phono section preamp
  6. Newcomb el84 amp
  7. Any Australians want to share shipping for valves from ESRC?
  8. 5718 Nuvistor ?
  9. Trimmer pot source?
  10. Pentode Miller Capacitance, and which spec value to use?
  11. Brother can you spare a preamp design?
  12. Reducing tremolo beating
  13. Russian tube equivelants
  14. Another question about russian tubes
  15. Why match tubes?
  16. My XPP OTL Headphoneamp
  17. Joining the Tubelab SE club
  18. Simple heater question
  19. Fender always taking care of tubes....
  20. Need small SET transformer (12B4)
  21. Red Hot 6L6GC
  22. How do these curves look?
  23. Why does lowering screen voltage reduce headroom?
  24. Class A2 Direct MOSFET Coupled SE
  25. Volume Surges Fender "The Twin" - transformer going?
  26. simple SE questions
  27. Best tubes for ~100w 1.9k p-p?
  28. Installing bleeding resistors
  29. Capacitor Comparison Conundrum
  30. Tubelab SE socket raise
  31. RH84 finish!
  32. cathode biasing question
  33. Modding an old tube amp???
  34. More snake oil
  35. simple se success!
  36. Rectifier swap out?
  37. Input impedance of tubelab simple se
  38. Capacitor tolerance
  39. Please comment my F2a SE schematic
  40. E80CC aikido
  41. Heater wiring help!
  42. Differential output stage: cap voltage?
  43. 6C41C in a PSU regulator?
  44. Filament Wiring - Shielded vs. Twisted?
  45. Transformer reflected impedance games? Overspec'd output power?
  46. SE 6V6 cathode resistor value
  47. Very strange gremlins in my phono PS
  48. which kit to build - first kit ever
  49. Does anyone know the plate reistance of a 6CW7/ECC84
  50. Shindo Claret
  51. se, srpp, pcb design criteria
  52. Looks like a promising SE build ??
  53. Apologies to Alex Kitic- RH84 Three Channel?
  54. 6L6 AB1 Push-Pull
  55. Jadis JA-30
  56. Black Gate "snubbing"
  57. New Schematic - PP UL 6V6-types, CCS-fed
  58. build up a new line amp
  59. How do you make a DHT amp REALLY HUM FREE????
  60. Experience with AnTek OPTs?
  61. 6V6 PP AB1 circuit
  62. Help with powering down a trafo
  63. Computer program for tube curves and Spice models
  64. Physical orientation of transformers
  65. Which EL34 tubes for Hi Fi
  66. Choke input power supply, capacitor ratings
  67. EL36/6CM5 SE design critique
  68. New 6F6 Amplifier Project
  69. Transformerless Tube Amp
  70. GE sealants: which to use?
  71. Bias supply and grid current
  72. US Army Russian Electronics Dictionary
  73. Speaker Pop!
  74. Steve Bench RIAA preamp users
  75. MAC free schematic drawing software?
  76. Using James JS-6123HS with EL84 SE is overkilled?
  77. Volume pot for simple se
  78. s5electronics 16ls schematic
  79. New to valve amps - given a 'project'
  80. Are there any loctal PC sockets?
  81. cheap and easy tube preamp
  82. Stereo bass problem
  83. SRS-360 East German transmitting tubes
  84. What the heck does a getter do ?
  85. Capacitor polarization help!
  86. MasterSound Tube Amplifier
  87. PC900 / EC900 curves
  88. 2x 12AX7 preamp fuse value
  89. Crackling Noise in Tube Amp (only) & PC Sound Card
  90. The Mullard 3-3
  91. Audio Research D125 Schematic?
  92. Glass B1. Need advise
  93. Eagle Library for OPT?
  94. Computing or measuring anode curves w/ CFB
  95. Northlake PT ??
  96. Greatest circuit ever (or weirdest)
  97. Advise for nervous EL84 user
  98. K-12G problems
  99. Changing AC heaters to DC
  100. Phase change when adding gain stage?
  101. XiangSheng Amplifier
  102. Grid stopper resistor for 12B4A?
  103. Lundahl LL1620 SE-OPT : Ultra linear ?
  104. Thordarson transformers
  105. Ampeg SVT cloners, chime in!
  106. Electra Print & SAC ( Silk )?
  107. Audio Transformer articles I would like copies of !
  108. K-12 with headphones?
  109. cap wire lead covers
  110. Single ended amp, EL34, KT88 ideas??
  111. Kt-66 and Simple SE
  112. Wavebourn Pyramid - VII driver stage
  113. Mysterious OPT winding tap
  114. DHT…. Get rid of the Hum Pot!
  115. Operating Amp Without Load
  116. Tube choices for Simple SE?
  117. Looking for information on old thread
  118. Tube Leveling Amplifier
  119. Anyone with knowledge of the 12b4?
  120. 7695...useful audio tube??
  121. simple se blowing rectifier and fuse
  122. PSUD - How do interpret the results?
  123. Solder station
  124. TubeLab SE blowing fuse on B+ ramp up
  125. preamp for pl504 amp
  126. Resistor after volume pot
  127. 6021 Amp project..looking for some input
  128. 807 SE project started....
  129. Fun with glow tubes, a success story
  130. OPT question
  131. Sources for Replacement Fender Filter Caps
  132. Cheap and easy vacuum impregnation
  133. How to measure mains waveform safely?
  134. Wanted - High Power, High Voltage, Audio Frequency Transformer Manual.
  135. Aikido Resistor Help
  136. Changing 6SQ7 to 6SL7 in SE amp
  137. Multi-tap OT
  138. harmon kardon a700 amp output trafo impedance
  139. An SE 813 OPT?? SP. Wound??who zat?
  140. Tube rectifier to diode
  141. The Trioderizer
  142. increasing coupling capacitor value in we 91
  143. diy SE Tube Amp
  144. Max power possible from 6L6 with 6.6k load?
  145. OPT grounding question
  146. Tubelab sse transformer wires
  147. SE sound vs Ultra Linear sound
  148. Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5
  149. 6N6P or E182cc spice
  150. Ecl82
  151. Zeiss Ikon Dominar L Amplifier
  152. Beginners attempt at SE 6EM7
  153. Changing 300B Tubelab SE to accomidate 50 triodes
  154. Subbing a 5751 with a 5755
  155. HELP repair a Yamaha T100C combo
  156. Sophia Electric 300B tube
  157. Screen drive and other P-P experiments
  158. Amplifier using a 833A
  159. Circuit help
  160. How much mis-match can an OT take?
  161. SE load mismatch, 8 or 6 or 4 ohms?
  162. Magnavox 196-BA => RH 84 conversion
  163. Capacitor voltage ratings
  164. 40W class A push pull amp with JJ 2A3-40w possible?
  165. "Designing tube preamplifier" article
  166. Valve Tester Guru Help
  167. 6GB5 and Variants as Screen Driven Amps
  168. Gyrator Question
  169. Suggestion Please - Curcuit Simulation & PCB Design Software
  170. Starting to understand.....
  171. Aureavox Arcana 81
  172. Impedance question
  173. spare transformer wires?
  174. Capacitors and maximum voltage ratings
  175. Do Sweep tubes Glow Blue?
  176. Any way to upgrade this circuit? (V. 40's phono amp.)
  177. About tube "matched pairs"
  178. Testing Gm without tube tester
  179. Best place to get Shuguang 300B tubes
  180. Old metal tubes
  181. LTSpice Simulation template?!
  182. 300B pushpull- A new schematic
  183. Drake transformer
  184. TL Audio VP-5051 Valve voice processor
  185. Vtl 750
  186. DC-coupling of tube stages
  187. ThermalTrak transistor application.
  188. weird old amp:need help
  189. Triode Electronics Mark III
  190. Scavenging a broken oscilloscope to turn it into a preamp ?
  191. Silmic caps in cathode bias. Any experience?
  192. Scott LK150 transformer
  193. With the Simple SE I lost 20lbs w/o diet or excercise and I feel great!
  194. Tube Amp / Pre-amp kit?
  195. anything that can go as a Rp.....
  196. Genelex gold lion el84 reissue - ARCING
  197. diy Ampeg preamp
  198. Bias Current Mythbuster?
  199. Exactness of feedback capacitors?
  200. 5608a
  201. You know that you are having a bad day when.......
  202. 1U5 amplifier design, Newbie
  203. 12AU7 Pre-amp Schematic Question
  204. Capacitor Question...
  205. Beam pentodes and suppressor-grid pentodes of same type
  206. Quick question about CT and FWB
  207. 46 and the Tubelab SE
  208. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  209. knobs, lights and switches?
  210. SimpleSE OP Hammond bigger than the 125ESE
  211. Speaker impedance linearisation
  212. Differential filter circuit: biasing problem
  213. Curves for 12AH7
  214. Schematic for Audio Note Japan Kassai
  215. Help with schematic understanding
  216. SEPP output transformer
  217. Fixed bias design question
  218. Strange bias circuit. WTF?
  219. 5687 preamp transformer
  220. Anyone know of a dual pentode suitable for a LTP.
  221. Output transformer current and power ratings
  222. Diodes to protect OT's..
  223. Simple SE: ???Dumb Tube Rectifier question???
  224. Speakers for tube amps
  225. Help on power supply
  226. Line output transformer question
  227. Solid vs stranded wire in amplifier circuits
  228. Screen Drive Push Pull ideas
  229. 12AT7/46 Direct Reactance Drive Amp
  230. Bridge rectifier vs Full wave rectifier
  231. Isolation Transformer Question
  232. Glow tubes as series regs ?
  233. Glow tube shunt reg stability
  234. Some interesting reading about Sweep tubes
  235. What is this?
  236. What's A "Timber bulb"?
  237. aikido/807PSE and local feedback
  238. Repairing paper in oil caps.
  239. Optoisolator compressor ideas
  240. Airgap for filament transformer ?
  241. Tube stereo for E 60 including TDA1541 cd player
  242. Bad Boy amplifier Tubelab.com style
  243. is there a typo in the Tubelab SE schematic?
  244. Theta Amp problem
  245. 12A_7 vs 6SN7EH vs EF86?
  246. Mixing two channels in the preamp or at the phase splitter?
  247. amp input cap for crossover
  248. Audio Transformer/Cathode Feedback Info
  249. Determining cathode resistor
  250. Tube Pin Schematic Question

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