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  1. weird old amp:need help
  2. Triode Electronics Mark III
  3. Scavenging a broken oscilloscope to turn it into a preamp ?
  4. Silmic caps in cathode bias. Any experience?
  5. Scott LK150 transformer
  6. With the Simple SE I lost 20lbs w/o diet or excercise and I feel great!
  7. Tube Amp / Pre-amp kit?
  8. anything that can go as a Rp.....
  9. Genelex gold lion el84 reissue - ARCING
  10. diy Ampeg preamp
  11. Bias Current Mythbuster?
  12. Exactness of feedback capacitors?
  13. 5608a
  14. You know that you are having a bad day when.......
  15. 1U5 amplifier design, Newbie
  16. 12AU7 Pre-amp Schematic Question
  17. Capacitor Question...
  18. Beam pentodes and suppressor-grid pentodes of same type
  19. Quick question about CT and FWB
  20. 46 and the Tubelab SE
  21. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  22. knobs, lights and switches?
  23. SimpleSE OP Hammond bigger than the 125ESE
  24. Speaker impedance linearisation
  25. Differential filter circuit: biasing problem
  26. Curves for 12AH7
  27. Schematic for Audio Note Japan Kassai
  28. Help with schematic understanding
  29. SEPP output transformer
  30. Fixed bias design question
  31. Strange bias circuit. WTF?
  32. 5687 preamp transformer
  33. Anyone know of a dual pentode suitable for a LTP.
  34. Output transformer current and power ratings
  35. Diodes to protect OT's..
  36. Simple SE: ???Dumb Tube Rectifier question???
  37. Speakers for tube amps
  38. Help on power supply
  39. Line output transformer question
  40. Solid vs stranded wire in amplifier circuits
  41. Screen Drive Push Pull ideas
  42. 12AT7/46 Direct Reactance Drive Amp
  43. Bridge rectifier vs Full wave rectifier
  44. Isolation Transformer Question
  45. Glow tubes as series regs ?
  46. Glow tube shunt reg stability
  47. Some interesting reading about Sweep tubes
  48. What is this?
  49. What's A "Timber bulb"?
  50. aikido/807PSE and local feedback
  51. Repairing paper in oil caps.
  52. Optoisolator compressor ideas
  53. Airgap for filament transformer ?
  54. Tube stereo for E 60 including TDA1541 cd player
  55. Bad Boy amplifier Tubelab.com style
  56. is there a typo in the Tubelab SE schematic?
  57. Theta Amp problem
  58. 12A_7 vs 6SN7EH vs EF86?
  59. Mixing two channels in the preamp or at the phase splitter?
  60. amp input cap for crossover
  61. Audio Transformer/Cathode Feedback Info
  62. Determining cathode resistor
  63. Tube Pin Schematic Question
  64. Simple SE blowing fuses
  65. Best looking tube?
  66. Identifying Stancor Power transformers
  67. HT crowbar
  68. "Bevois Valley" in triode, what to do with the feedback?
  69. Purple Glow
  70. When to use a grid leak resistor?
  71. Mcintosh MA 2275
  72. Marshall 18W clone (sort of)
  73. Cathode feedback on the simple SE
  74. Blowing output transformer
  75. Kenwood KW-44 hum
  76. Tube system for classical audio
  77. Novel method to reduce filament hum in SE Amp?
  78. Help with 6SN7 w/ CCS
  79. Fisher X-101-D
  80. best tube (not amp)
  81. Simple SE Cap and layout questions???
  82. Simple SE - one channel intermittent problem
  83. ML4/ML6 British triode
  84. transformer rubbish
  85. Identifying output transformer leads
  86. Grounding Aikido and F4
  87. Determining ratings for unknown Power Transformers
  88. Tube heaven - or tube hell?
  89. Fender "Evil Twin" Hi/Low output = same level
  90. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  91. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  92. Low Voltage Tube Solidstate Guitar preamp design ...
  93. SE cathode bias question
  94. k-12G / K-12M with 4 Ohm speakers
  95. About united electron tube
  96. 6c33c-b & 6c33c-v
  97. The secrets of guitar amplifiers
  98. would like a substitute for Sowter 3575-C
  99. My first tube project WIP
  100. Tube rectifiede +- supply...
  101. the buzzing from amplifiers
  102. MC prepre with submini tubes
  103. 12AU7 Preamp build
  104. Bias/ Plate dissipation question
  105. Has anyone screen driven an EL84?
  106. SE 7868 Guitar Amp - some issues...
  107. tube pre amp for phone stage
  108. 6080 se cathode follower
  109. Amplifier suggestions for EPA OPT please
  110. Which tube? How much power can it produce?
  111. Graaf GM20 mods - help!
  112. xpp amplifier question
  113. 520v in PP UL...?
  114. New ST-70 blowing 3 amp slow blow fuse
  115. Was There a Heathkit W-1M or WM?
  116. 8ohm speakers 4ohm tap
  117. Upgrading the Conrad Johnson Premier Fourteen preamp
  118. Noob's first build !!!!
  119. 6sf5gt ??
  120. Measuring technics practical, the allaround reference method?
  121. 2A3 or KT88 ?
  122. What to build with these tubes?
  123. line output transformer help
  124. 6L6GC Options and Flavors
  125. Chinese Buffer Amp, Useful?
  126. 6C33C SE Amp - Ideas on refinement?
  127. 6BM8 Equivalent
  128. Newbie wants to rebuild a Stromberg Carlson ASR-433
  129. RH84 questions
  130. VTL Manley 807 push pull ultra linear
  131. Seeking Pentode-Triode with a 12AX7 half...
  132. Modern tube amplifier designs?
  133. 6n6p transformer output impedance
  134. 814 triode curves
  135. Bias Question
  136. Building a variac
  137. Is my 300B tube dead?
  138. One channel quiet - any bright ideas?
  139. Saw them coming (stupid prices on ebay)
  140. EL36/6CM5 pp design critique
  141. Driving Raven R2 with tubes
  142. Does Anyone Know What This Is?
  143. Need help with tubes problem...
  144. 6V6GT push pull NFB resistor value
  145. Power cord for single ended triode
  146. Virtual chokes
  147. 12AU7 based preamp hums when output cable is touched!
  148. Possible Test equipment find.
  149. 6ak5-45
  150. Using coax for signal wiring?
  151. Chassis Plate Finish
  152. Schade84
  153. Fisher 800c selenium rectifier pictures
  154. Bass amp from spare parts
  155. Looking for tips on operating points for tubes in anode follower ...
  156. Transformer in the cathodes ??
  157. Fisher 800c static,crackle
  158. 19J6 replacement
  159. Newbie tube buffer kit
  160. Simple se parts, all needed?
  161. Any recommendations for tube for vari-mu compressor?
  162. AMC CVT 3030 Bias Procedure
  163. Cascading volumes on a 5C3 amp
  164. Anyone used a edcor cxpp100-ms-5k OT
  165. Noisy gain boost
  166. Troubleshooting hum issues with batteries?
  167. Rectifying Heater Supply
  168. tube heater over voltage!please help...
  169. rca 829b bias ? Audioromy 828
  170. 10k winding, 100k pot
  171. What is the definition of a 'good tube'?
  172. 3-stage DC-coupled Ampl
  173. 1946 Philco Tube Receiver
  174. A New Source for James Transformers
  175. Edcor Site Down? Gone? anyone know anything?
  176. Please suggest practical DIY uses for these BIG oil caps
  177. How to calculate DRD amps..
  178. PL-519 Tube - Tell me more please...
  179. Need ideas for amp with 2A3, One Electron UBT-3
  180. Favourites discrete brand for tube amp
  181. Pharmicia EPS500/400 Power supply - tube use
  182. Black Art Audio
  183. 12AX7/12BH7 Hammond Tube Preamp Project
  184. Dampen transformer endbells?
  185. Do I have DC on my AC line?
  186. GM-70 cathode feed SE amplifier
  187. Rogers cadet mk 2 newbie project experience required
  188. Mcintosh amps transformer rewinding, help needed please!
  189. Using an output tranny from a stereo for a single-ended amplifier ?
  190. 6336A Single Ended.
  191. UA 175 Urei 175
  192. Morgan Jones 5842 RIAA
  193. Question about current ratings of Hammond 300 series power transformers.
  194. Cathode Windings
  195. Phono stage for 12B4 amp [from previous thread]
  196. Looking for schematic of 26 WOT Preamp
  197. Transformer Lam Questions
  198. Schottky diode bias
  199. ACROSOUND direct-couple EL84 amplifier question
  200. RH807 CCS loaded
  201. Audio Note Kit 1 PSU question
  202. B&K 500 Tube Tester Calibration
  203. New kt88's or 6550
  204. Bias Supply resistors
  205. Incredible source for used transformers and parts!
  206. Reclaimed Hammond H100 PSU's
  207. Arc Vt-60 Cloned :-)
  208. First Time Pre Amp Build
  209. Tubelab SE 300B low level hum, help
  210. 845 - Progress so far
  211. Nube challange12AX7 to drive 6C4
  212. 7th harmonic distortion from PP pentodes depends on bias?
  213. West Output Transformers?
  214. Help me design my DAC/Line Preamp.
  215. Hybrid preamp tube problemHi,
  216. sweept tubes for simple Se recommendation?
  217. Building RH84 SE tube amp.
  218. Question - THD Measrement/Spectrum Analyzis
  219. What to do with TMC tube radio gear?
  220. Easy & Safe & Good sounding gainclone tube buffer
  221. Compactron (31AL10) Head-Scratcher
  222. blackfacing a twin
  223. What cable do you use from input socket to volume pot
  224. problem with 12AE6A buffer
  225. Adding a master volume to a Fender 5C3 Deluxe
  226. Parafeed dc blocking/coupling cap help
  227. Funky Looking 15DQ8s
  228. 12SN7 vs 7N7 ** 6SN7
  229. Correct Pins For EL84 Triode Strap
  230. Dimensions for anode cap sizes?
  231. Mains transformer help needed please
  232. Tone Stack Challenge
  233. Aikido 6SN7 input 5687 output
  234. FRANK"S 6SN7 preamp/linestage
  235. Pentode grid question...
  236. Channel Switching
  237. Hybrid fullwave rectifier
  238. 300B stereo amp project help
  239. Another Bogen CHB 100 Conversion
  240. EdcorEurope
  241. Can AC wires induce hum in output transformers?
  242. Would you use a 4 ohm tap with these speakers?
  243. Changing grid leak bias preamp to cathode bias
  244. 304tl se amp
  245. 5687 Srpp
  246. Dumb Question Brain is numb today!
  247. What a Deal!
  248. Electrons on Parade
  249. Roll Chart for 6DJ8/6922/7308 on Philco 9100 help
  250. MeiXing MC-805AA biasing