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  1. Rectifier swap out?
  2. Input impedance of tubelab simple se
  3. Capacitor tolerance
  4. Please comment my F2a SE schematic
  5. E80CC aikido
  6. Heater wiring help!
  7. Differential output stage: cap voltage?
  8. 6C41C in a PSU regulator?
  9. Filament Wiring - Shielded vs. Twisted?
  10. Transformer reflected impedance games? Overspec'd output power?
  11. SE 6V6 cathode resistor value
  12. Very strange gremlins in my phono PS
  13. which kit to build - first kit ever
  14. Does anyone know the plate reistance of a 6CW7/ECC84
  15. Shindo Claret
  16. se, srpp, pcb design criteria
  17. Looks like a promising SE build ??
  18. Apologies to Alex Kitic- RH84 Three Channel?
  19. 6L6 AB1 Push-Pull
  20. Jadis JA-30
  21. Black Gate "snubbing"
  22. New Schematic - PP UL 6V6-types, CCS-fed
  23. build up a new line amp
  24. How do you make a DHT amp REALLY HUM FREE????
  25. Experience with AnTek OPTs?
  26. 6V6 PP AB1 circuit
  27. Help with powering down a trafo
  28. Computer program for tube curves and Spice models
  29. Some help/advice with a guitar amp layout.
  30. Physical orientation of transformers
  31. Which EL34 tubes for Hi Fi
  32. Choke input power supply, capacitor ratings
  33. EL36/6CM5 SE design critique
  34. New 6F6 Amplifier Project
  35. Transformerless Tube Amp
  36. GE sealants: which to use?
  37. Bias supply and grid current
  38. US Army Russian Electronics Dictionary
  39. Speaker Pop!
  40. Steve Bench RIAA preamp users
  41. MAC free schematic drawing software?
  42. Using James JS-6123HS with EL84 SE is overkilled?
  43. Volume pot for simple se
  44. s5electronics 16ls schematic
  45. New to valve amps - given a 'project'
  46. Are there any loctal PC sockets?
  47. cheap and easy tube preamp
  48. Stereo bass problem
  49. SRS-360 East German transmitting tubes
  50. What the heck does a getter do ?
  51. Capacitor polarization help!
  52. MasterSound Tube Amplifier
  53. PC900 / EC900 curves
  54. 2x 12AX7 preamp fuse value
  55. Crackling Noise in Tube Amp (only) & PC Sound Card
  56. The Mullard 3-3
  57. Audio Research D125 Schematic?
  58. Glass B1. Need advise
  59. Eagle Library for OPT?
  60. Computing or measuring anode curves w/ CFB
  61. Northlake PT ??
  62. Greatest circuit ever (or weirdest)
  63. Advise for nervous EL84 user
  64. K-12G problems
  65. Changing AC heaters to DC
  66. Phase change when adding gain stage?
  67. XiangSheng Amplifier
  68. Grid stopper resistor for 12B4A?
  69. Lundahl LL1620 SE-OPT : Ultra linear ?
  70. Thordarson transformers
  71. Ampeg SVT cloners, chime in!
  72. Electra Print & SAC ( Silk )?
  73. Audio Transformer articles I would like copies of !
  74. K-12 with headphones?
  75. cap wire lead covers
  76. Single ended amp, EL34, KT88 ideas??
  77. Kt-66 and Simple SE
  78. Wavebourn Pyramid - VII driver stage
  79. Mysterious OPT winding tap
  80. DHT…. Get rid of the Hum Pot!
  81. Operating Amp Without Load
  82. Tube choices for Simple SE?
  83. Looking for information on old thread
  84. Tube Leveling Amplifier
  85. Anyone with knowledge of the 12b4?
  86. 7695...useful audio tube??
  87. simple se blowing rectifier and fuse
  88. PSUD - How do interpret the results?
  89. Solder station
  90. TubeLab SE blowing fuse on B+ ramp up
  91. preamp for pl504 amp
  92. Resistor after volume pot
  93. 6021 Amp project..looking for some input
  94. 807 SE project started....
  95. Fun with glow tubes, a success story
  96. OPT question
  97. Sources for Replacement Fender Filter Caps
  98. Cheap and easy vacuum impregnation
  99. How to measure mains waveform safely?
  100. Wanted - High Power, High Voltage, Audio Frequency Transformer Manual.
  101. Aikido Resistor Help
  102. Changing 6SQ7 to 6SL7 in SE amp
  103. Multi-tap OT
  104. harmon kardon a700 amp output trafo impedance
  105. An SE 813 OPT?? SP. Wound??who zat?
  106. Tube rectifier to diode
  107. The Trioderizer
  108. increasing coupling capacitor value in we 91
  109. diy SE Tube Amp
  110. Max power possible from 6L6 with 6.6k load?
  111. OPT grounding question
  112. Tubelab sse transformer wires
  113. SE sound vs Ultra Linear sound
  114. Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5
  115. 6N6P or E182cc spice
  116. Ecl82
  117. Zeiss Ikon Dominar L Amplifier
  118. Beginners attempt at SE 6EM7
  119. Changing 300B Tubelab SE to accomidate 50 triodes
  120. Subbing a 5751 with a 5755
  121. HELP repair a Yamaha T100C combo
  122. Sophia Electric 300B tube
  123. Screen drive and other P-P experiments
  124. Amplifier using a 833A
  125. Circuit help
  126. How much mis-match can an OT take?
  127. SE load mismatch, 8 or 6 or 4 ohms?
  128. Magnavox 196-BA => RH 84 conversion
  129. Capacitor voltage ratings
  130. 40W class A push pull amp with JJ 2A3-40w possible?
  131. "Designing tube preamplifier" article
  132. Valve Tester Guru Help
  133. 6GB5 and Variants as Screen Driven Amps
  134. Gyrator Question
  135. Suggestion Please - Curcuit Simulation & PCB Design Software
  136. Starting to understand.....
  137. Aureavox Arcana 81
  138. Impedance question
  139. spare transformer wires?
  140. Capacitors and maximum voltage ratings
  141. Do Sweep tubes Glow Blue?
  142. Any way to upgrade this circuit? (V. 40's phono amp.)
  143. About tube "matched pairs"
  144. Testing Gm without tube tester
  145. Best place to get Shuguang 300B tubes
  146. Old metal tubes
  147. LTSpice Simulation template?!
  148. 300B pushpull- A new schematic
  149. Drake transformer
  150. TL Audio VP-5051 Valve voice processor
  151. Vtl 750
  152. DC-coupling of tube stages
  153. ThermalTrak transistor application.
  154. weird old amp:need help
  155. Triode Electronics Mark III
  156. Scavenging a broken oscilloscope to turn it into a preamp ?
  157. Silmic caps in cathode bias. Any experience?
  158. Scott LK150 transformer
  159. With the Simple SE I lost 20lbs w/o diet or excercise and I feel great!
  160. Tube Amp / Pre-amp kit?
  161. anything that can go as a Rp.....
  162. Genelex gold lion el84 reissue - ARCING
  163. diy Ampeg preamp
  164. Bias Current Mythbuster?
  165. Exactness of feedback capacitors?
  166. 5608a
  167. You know that you are having a bad day when.......
  168. 1U5 amplifier design, Newbie
  169. 12AU7 Pre-amp Schematic Question
  170. Capacitor Question...
  171. Beam pentodes and suppressor-grid pentodes of same type
  172. Quick question about CT and FWB
  173. 46 and the Tubelab SE
  174. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  175. knobs, lights and switches?
  176. SimpleSE OP Hammond bigger than the 125ESE
  177. Speaker impedance linearisation
  178. Differential filter circuit: biasing problem
  179. Curves for 12AH7
  180. Schematic for Audio Note Japan Kassai
  181. Help with schematic understanding
  182. SEPP output transformer
  183. Fixed bias design question
  184. Strange bias circuit. WTF?
  185. 5687 preamp transformer
  186. Anyone know of a dual pentode suitable for a LTP.
  187. Output transformer current and power ratings
  188. Diodes to protect OT's..
  189. Simple SE: ???Dumb Tube Rectifier question???
  190. Speakers for tube amps
  191. Help on power supply
  192. Line output transformer question
  193. Solid vs stranded wire in amplifier circuits
  194. Screen Drive Push Pull ideas
  195. 12AT7/46 Direct Reactance Drive Amp
  196. Bridge rectifier vs Full wave rectifier
  197. Isolation Transformer Question
  198. Glow tubes as series regs ?
  199. Glow tube shunt reg stability
  200. Some interesting reading about Sweep tubes
  201. What is this?
  202. What's A "Timber bulb"?
  203. aikido/807PSE and local feedback
  204. Repairing paper in oil caps.
  205. Optoisolator compressor ideas
  206. Airgap for filament transformer ?
  207. Tube stereo for E 60 including TDA1541 cd player
  208. Bad Boy amplifier Tubelab.com style
  209. is there a typo in the Tubelab SE schematic?
  210. Theta Amp problem
  211. 12A_7 vs 6SN7EH vs EF86?
  212. Mixing two channels in the preamp or at the phase splitter?
  213. amp input cap for crossover
  214. Audio Transformer/Cathode Feedback Info
  215. Determining cathode resistor
  216. Tube Pin Schematic Question
  217. Simple SE blowing fuses
  218. Best looking tube?
  219. Identifying Stancor Power transformers
  220. HT crowbar
  221. "Bevois Valley" in triode, what to do with the feedback?
  222. Purple Glow
  223. When to use a grid leak resistor?
  224. Mcintosh MA 2275
  225. Marshall 18W clone (sort of)
  226. Cathode feedback on the simple SE
  227. Blowing output transformer
  228. Kenwood KW-44 hum
  229. Tube system for classical audio
  230. Novel method to reduce filament hum in SE Amp?
  231. Help with 6SN7 w/ CCS
  232. Fisher X-101-D
  233. best tube (not amp)
  234. Simple SE Cap and layout questions???
  235. Simple SE - one channel intermittent problem
  236. ML4/ML6 British triode
  237. transformer rubbish
  238. Identifying output transformer leads
  239. Grounding Aikido and F4
  240. Determining ratings for unknown Power Transformers
  241. Tube heaven - or tube hell?
  242. Fender "Evil Twin" Hi/Low output = same level
  243. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  244. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  245. SE cathode bias question
  246. k-12G / K-12M with 4 Ohm speakers
  247. About united electron tube
  248. 6c33c-b & 6c33c-v
  249. would like a substitute for Sowter 3575-C
  250. My first tube project WIP

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