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  1. Wanted - High Power, High Voltage, Audio Frequency Transformer Manual.
  2. Aikido Resistor Help
  3. Changing 6SQ7 to 6SL7 in SE amp
  4. Multi-tap OT
  5. harmon kardon a700 amp output trafo impedance
  6. An SE 813 OPT?? SP. Wound??who zat?
  7. Tube rectifier to diode
  8. The Trioderizer
  9. increasing coupling capacitor value in we 91
  10. diy SE Tube Amp
  11. Max power possible from 6L6 with 6.6k load?
  12. OPT grounding question
  13. Tubelab sse transformer wires
  14. SE sound vs Ultra Linear sound
  15. Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5
  16. 6N6P or E182cc spice
  17. Ecl82
  18. Zeiss Ikon Dominar L Amplifier
  19. Beginners attempt at SE 6EM7
  20. Changing 300B Tubelab SE to accomidate 50 triodes
  21. Subbing a 5751 with a 5755
  22. Sophia Electric 300B tube
  23. Screen drive and other P-P experiments
  24. Amplifier using a 833A
  25. Circuit help
  26. How much mis-match can an OT take?
  27. SE load mismatch, 8 or 6 or 4 ohms?
  28. Magnavox 196-BA => RH 84 conversion
  29. 40W class A push pull amp with JJ 2A3-40w possible?
  30. "Designing tube preamplifier" article
  31. Valve Tester Guru Help
  32. 6GB5 and Variants as Screen Driven Amps
  33. Gyrator Question
  34. Suggestion Please - Curcuit Simulation & PCB Design Software
  35. Starting to understand.....
  36. Aureavox Arcana 81
  37. Impedance question
  38. spare transformer wires?
  39. Capacitors and maximum voltage ratings
  40. Do Sweep tubes Glow Blue?
  41. Any way to upgrade this circuit? (V. 40's phono amp.)
  42. About tube "matched pairs"
  43. Testing Gm without tube tester
  44. Best place to get Shuguang 300B tubes
  45. Old metal tubes
  46. LTSpice Simulation template?!
  47. 300B pushpull- A new schematic
  48. Drake transformer
  49. TL Audio VP-5051 Valve voice processor
  50. Vtl 750
  51. DC-coupling of tube stages
  52. ThermalTrak transistor application.
  53. weird old amp:need help
  54. Triode Electronics Mark III
  55. Scavenging a broken oscilloscope to turn it into a preamp ?
  56. Silmic caps in cathode bias. Any experience?
  57. Scott LK150 transformer
  58. With the Simple SE I lost 20lbs w/o diet or excercise and I feel great!
  59. Tube Amp / Pre-amp kit?
  60. anything that can go as a Rp.....
  61. Genelex gold lion el84 reissue - ARCING
  62. Bias Current Mythbuster?
  63. Exactness of feedback capacitors?
  64. 5608a
  65. You know that you are having a bad day when.......
  66. 1U5 amplifier design, Newbie
  67. 12AU7 Pre-amp Schematic Question
  68. Beam pentodes and suppressor-grid pentodes of same type
  69. Quick question about CT and FWB
  70. 46 and the Tubelab SE
  71. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  72. knobs, lights and switches?
  73. SimpleSE OP Hammond bigger than the 125ESE
  74. Speaker impedance linearisation
  75. Differential filter circuit: biasing problem
  76. Curves for 12AH7
  77. Schematic for Audio Note Japan Kassai
  78. Help with schematic understanding
  79. SEPP output transformer
  80. Fixed bias design question
  81. Strange bias circuit. WTF?
  82. 5687 preamp transformer
  83. Anyone know of a dual pentode suitable for a LTP.
  84. Output transformer current and power ratings
  85. Diodes to protect OT's..
  86. Simple SE: ???Dumb Tube Rectifier question???
  87. Speakers for tube amps
  88. Help on power supply
  89. Line output transformer question
  90. Solid vs stranded wire in amplifier circuits
  91. Screen Drive Push Pull ideas
  92. 12AT7/46 Direct Reactance Drive Amp
  93. Bridge rectifier vs Full wave rectifier
  94. Isolation Transformer Question
  95. Glow tubes as series regs ?
  96. Glow tube shunt reg stability
  97. Some interesting reading about Sweep tubes
  98. What is this?
  99. What's A "Timber bulb"?
  100. aikido/807PSE and local feedback
  101. Optoisolator compressor ideas
  102. Airgap for filament transformer ?
  103. Tube stereo for E 60 including TDA1541 cd player
  104. Bad Boy amplifier Tubelab.com style
  105. is there a typo in the Tubelab SE schematic?
  106. Theta Amp problem
  107. 12A_7 vs 6SN7EH vs EF86?
  108. Mixing two channels in the preamp or at the phase splitter?
  109. amp input cap for crossover
  110. Audio Transformer/Cathode Feedback Info
  111. Determining cathode resistor
  112. Tube Pin Schematic Question
  113. Simple SE blowing fuses
  114. Best looking tube?
  115. Identifying Stancor Power transformers
  116. HT crowbar
  117. "Bevois Valley" in triode, what to do with the feedback?
  118. Purple Glow
  119. When to use a grid leak resistor?
  120. Mcintosh MA 2275
  121. Cathode feedback on the simple SE
  122. Blowing output transformer
  123. Kenwood KW-44 hum
  124. Tube system for classical audio
  125. Novel method to reduce filament hum in SE Amp?
  126. Help with 6SN7 w/ CCS
  127. Fisher X-101-D
  128. best tube (not amp)
  129. Simple SE Cap and layout questions???
  130. Simple SE - one channel intermittent problem
  131. ML4/ML6 British triode
  132. transformer rubbish
  133. Identifying output transformer leads
  134. Grounding Aikido and F4
  135. Determining ratings for unknown Power Transformers
  136. Tube heaven - or tube hell?
  137. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  138. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  139. SE cathode bias question
  140. k-12G / K-12M with 4 Ohm speakers
  141. About united electron tube
  142. 6c33c-b & 6c33c-v
  143. would like a substitute for Sowter 3575-C
  144. My first tube project WIP
  145. Tube rectifiede +- supply...
  146. the buzzing from amplifiers
  147. MC prepre with submini tubes
  148. 12AU7 Preamp build
  149. Bias/ Plate dissipation question
  150. Has anyone screen driven an EL84?
  151. tube pre amp for phone stage
  152. 6080 se cathode follower
  153. Amplifier suggestions for EPA OPT please
  154. Which tube? How much power can it produce?
  155. Graaf GM20 mods - help!
  156. xpp amplifier question
  157. 520v in PP UL...?
  158. New ST-70 blowing 3 amp slow blow fuse
  159. Was There a Heathkit W-1M or WM?
  160. 8ohm speakers 4ohm tap
  161. Upgrading the Conrad Johnson Premier Fourteen preamp
  162. Noob's first build !!!!
  163. 6sf5gt ??
  164. Measuring technics practical, the allaround reference method?
  165. 2A3 or KT88 ?
  166. What to build with these tubes?
  167. line output transformer help
  168. 6L6GC Options and Flavors
  169. Chinese Buffer Amp, Useful?
  170. 6C33C SE Amp - Ideas on refinement?
  171. 6BM8 Equivalent
  172. Newbie wants to rebuild a Stromberg Carlson ASR-433
  173. RH84 questions
  174. VTL Manley 807 push pull ultra linear
  175. Seeking Pentode-Triode with a 12AX7 half...
  176. Modern tube amplifier designs?
  177. 6n6p transformer output impedance
  178. 814 triode curves
  179. Bias Question
  180. Building a variac
  181. Is my 300B tube dead?
  182. One channel quiet - any bright ideas?
  183. Saw them coming (stupid prices on ebay)
  184. EL36/6CM5 pp design critique
  185. Driving Raven R2 with tubes
  186. Does Anyone Know What This Is?
  187. Need help with tubes problem...
  188. 6V6GT push pull NFB resistor value
  189. Power cord for single ended triode
  190. Virtual chokes
  191. 12AU7 based preamp hums when output cable is touched!
  192. Possible Test equipment find.
  193. 6ak5-45
  194. Using coax for signal wiring?
  195. Chassis Plate Finish
  196. Schade84
  197. Fisher 800c selenium rectifier pictures
  198. Looking for tips on operating points for tubes in anode follower ...
  199. Transformer in the cathodes ??
  200. Fisher 800c static,crackle
  201. 19J6 replacement
  202. Newbie tube buffer kit
  203. Simple se parts, all needed?
  204. Any recommendations for tube for vari-mu compressor?
  205. AMC CVT 3030 Bias Procedure
  206. Anyone used a edcor cxpp100-ms-5k OT
  207. Noisy gain boost
  208. Troubleshooting hum issues with batteries?
  209. Rectifying Heater Supply
  210. tube heater over voltage!please help...
  211. rca 829b bias ? Audioromy 828
  212. 10k winding, 100k pot
  213. What is the definition of a 'good tube'?
  214. 3-stage DC-coupled Ampl
  215. 1946 Philco Tube Receiver
  216. A New Source for James Transformers
  217. Edcor Site Down? Gone? anyone know anything?
  218. Please suggest practical DIY uses for these BIG oil caps
  219. How to calculate DRD amps..
  220. PL-519 Tube - Tell me more please...
  221. Need ideas for amp with 2A3, One Electron UBT-3
  222. Favourites discrete brand for tube amp
  223. Pharmicia EPS500/400 Power supply - tube use
  224. Black Art Audio
  225. 12AX7/12BH7 Hammond Tube Preamp Project
  226. Dampen transformer endbells?
  227. Do I have DC on my AC line?
  228. GM-70 cathode feed SE amplifier
  229. Rogers cadet mk 2 newbie project experience required
  230. Mcintosh amps transformer rewinding, help needed please!
  231. Using an output tranny from a stereo for a single-ended amplifier ?
  232. 6336A Single Ended.
  233. UA 175 Urei 175
  234. Morgan Jones 5842 RIAA
  235. Question about current ratings of Hammond 300 series power transformers.
  236. Cathode Windings
  237. Phono stage for 12B4 amp [from previous thread]
  238. Looking for schematic of 26 WOT Preamp
  239. Transformer Lam Questions
  240. Schottky diode bias
  241. ACROSOUND direct-couple EL84 amplifier question
  242. RH807 CCS loaded
  243. Audio Note Kit 1 PSU question
  244. B&K 500 Tube Tester Calibration
  245. New kt88's or 6550
  246. Bias Supply resistors
  247. Incredible source for used transformers and parts!
  248. Reclaimed Hammond H100 PSU's
  249. Arc Vt-60 Cloned :-)
  250. First Time Pre Amp Build

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