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  1. Tubes Down Under...
  2. To anyone using 808s
  3. Grounded power supply cord on a transformerless amp ?
  4. PP KT88 Mono blocks?
  5. Looking for 6.3V 1A ccs heater supply for dht
  6. testing for the ratios on old opt's
  7. Any Transformer Winders?
  8. Output trans plate load question 5687 vs 5965
  9. KT88 triode strapped question
  10. 6528/8080 Triode - NOS Only ???
  11. Opinions gratefully recieved.
  12. Wiring Power Transformer in Parallel
  13. Is there a best location for a volume control?
  14. Help on EL84 / ecc83 SE project -very low volume
  15. 4E27 Triode connection SPICE model
  16. 300B driving 845
  17. Breaking in your tubes?
  18. 6SN7 equivalents in B9A
  19. Figuring out how many watts I need
  20. How do I tell whether a different replacement output transformer will be ok?
  21. OPT linestage question
  22. 6AS7 preamp buffer
  23. 5u4g input capacitor
  24. Chassis metal advantages/disadvantages?
  25. Experience please: Tung-Sol 6L6GC STR
  26. Transformer winding resistances
  27. Oh my where to begin!? PTP related question.
  28. tube bayonet pin gone.
  29. Attn: Glass_painter - Pioneer SM-83 Transformers Dissected
  30. Please help ID this DIY tube monoblocks
  31. Amp thinks it's a receiver ??
  32. Anyone remember heathkit s99?
  33. Renovation of fifty years old tube amplifier
  34. Big Boss: a simple and basic el84 PP amp in progress
  35. Line Stage for Mikael SE KT88
  36. Philips EL3536
  37. Counterpoint SA-5000 P.S.U part identification needed
  38. 6GU7 in an Aikido?
  39. suggest about 9002/vt202 preamp please
  40. 7591a Alternatives
  41. tube rectifier plug in s-s replacement
  42. Oscillation in tube amps
  43. 6GT5 audio amp?
  44. Pin numbering, viewed from bottom or top?
  45. The Hybrid Class A amplifier
  46. 485V Regulated Power Supply
  47. 0B3 Glows Orange
  48. New Reissue tubes...Good/Bad???
  49. PP amp design , your thoughts please.
  50. Aikido + Phono section preamp
  51. Newcomb el84 amp
  52. Any Australians want to share shipping for valves from ESRC?
  53. 5718 Nuvistor ?
  54. Pentode Miller Capacitance, and which spec value to use?
  55. Brother can you spare a preamp design?
  56. Russian tube equivelants
  57. Another question about russian tubes
  58. Why match tubes?
  59. My XPP OTL Headphoneamp
  60. Simple heater question
  61. Need small SET transformer (12B4)
  62. Red Hot 6L6GC
  63. How do these curves look?
  64. Why does lowering screen voltage reduce headroom?
  65. Class A2 Direct MOSFET Coupled SE
  66. Best tubes for ~100w 1.9k p-p?
  67. Installing bleeding resistors
  68. RH84 finish!
  69. cathode biasing question
  70. Modding an old tube amp???
  71. Rectifier swap out?
  72. Please comment my F2a SE schematic
  73. E80CC aikido
  74. Heater wiring help!
  75. Differential output stage: cap voltage?
  76. 6C41C in a PSU regulator?
  77. Filament Wiring - Shielded vs. Twisted?
  78. Transformer reflected impedance games? Overspec'd output power?
  79. SE 6V6 cathode resistor value
  80. Very strange gremlins in my phono PS
  81. which kit to build - first kit ever
  82. Does anyone know the plate reistance of a 6CW7/ECC84
  83. Shindo Claret
  84. se, srpp, pcb design criteria
  85. Looks like a promising SE build ??
  86. Apologies to Alex Kitic- RH84 Three Channel?
  87. 6L6 AB1 Push-Pull
  88. Jadis JA-30
  89. Black Gate "snubbing"
  90. New Schematic - PP UL 6V6-types, CCS-fed
  91. build up a new line amp
  92. How do you make a DHT amp REALLY HUM FREE????
  93. Experience with AnTek OPTs?
  94. 6V6 PP AB1 circuit
  95. Help with powering down a trafo
  96. Physical orientation of transformers
  97. Which EL34 tubes for Hi Fi
  98. Choke input power supply, capacitor ratings
  99. EL36/6CM5 SE design critique
  100. New 6F6 Amplifier Project
  101. Transformerless Tube Amp
  102. GE sealants: which to use?
  103. Bias supply and grid current
  104. US Army Russian Electronics Dictionary
  105. Speaker Pop!
  106. Steve Bench RIAA preamp users
  107. Using James JS-6123HS with EL84 SE is overkilled?
  108. s5electronics 16ls schematic
  109. New to valve amps - given a 'project'
  110. Are there any loctal PC sockets?
  111. cheap and easy tube preamp
  112. Stereo bass problem
  113. SRS-360 East German transmitting tubes
  114. What the heck does a getter do ?
  115. Capacitor polarization help!
  116. MasterSound Tube Amplifier
  117. PC900 / EC900 curves
  118. 2x 12AX7 preamp fuse value
  119. Crackling Noise in Tube Amp (only) & PC Sound Card
  120. The Mullard 3-3
  121. Audio Research D125 Schematic?
  122. Glass B1. Need advise
  123. Computing or measuring anode curves w/ CFB
  124. Northlake PT ??
  125. Greatest circuit ever (or weirdest)
  126. Advise for nervous EL84 user
  127. K-12G problems
  128. Changing AC heaters to DC
  129. Phase change when adding gain stage?
  130. XiangSheng Amplifier
  131. Grid stopper resistor for 12B4A?
  132. Lundahl LL1620 SE-OPT : Ultra linear ?
  133. Thordarson transformers
  134. Electra Print & SAC ( Silk )?
  135. Audio Transformer articles I would like copies of !
  136. K-12 with headphones?
  137. cap wire lead covers
  138. Single ended amp, EL34, KT88 ideas??
  139. Wavebourn Pyramid - VII driver stage
  140. Mysterious OPT winding tap
  141. DHT…. Get rid of the Hum Pot!
  142. Operating Amp Without Load
  143. Looking for information on old thread
  144. Tube Leveling Amplifier
  145. Anyone with knowledge of the 12b4?
  146. 7695...useful audio tube??
  147. PSUD - How do interpret the results?
  148. Solder station
  149. preamp for pl504 amp
  150. Resistor after volume pot
  151. 6021 Amp project..looking for some input
  152. 807 SE project started....
  153. Fun with glow tubes, a success story
  154. OPT question
  155. Cheap and easy vacuum impregnation
  156. How to measure mains waveform safely?
  157. Wanted - High Power, High Voltage, Audio Frequency Transformer Manual.
  158. Aikido Resistor Help
  159. Changing 6SQ7 to 6SL7 in SE amp
  160. Multi-tap OT
  161. harmon kardon a700 amp output trafo impedance
  162. An SE 813 OPT?? SP. Wound??who zat?
  163. Tube rectifier to diode
  164. The Trioderizer
  165. increasing coupling capacitor value in we 91
  166. diy SE Tube Amp
  167. Max power possible from 6L6 with 6.6k load?
  168. OPT grounding question
  169. SE sound vs Ultra Linear sound
  170. Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5
  171. 6N6P or E182cc spice
  172. Ecl82
  173. Zeiss Ikon Dominar L Amplifier
  174. Beginners attempt at SE 6EM7
  175. Subbing a 5751 with a 5755
  176. Sophia Electric 300B tube
  177. Screen drive and other P-P experiments
  178. Amplifier using a 833A
  179. Circuit help
  180. How much mis-match can an OT take?
  181. SE load mismatch, 8 or 6 or 4 ohms?
  182. Magnavox 196-BA => RH 84 conversion
  183. 40W class A push pull amp with JJ 2A3-40w possible?
  184. "Designing tube preamplifier" article
  185. Valve Tester Guru Help
  186. 6GB5 and Variants as Screen Driven Amps
  187. Gyrator Question
  188. Suggestion Please - Curcuit Simulation & PCB Design Software
  189. Starting to understand.....
  190. Aureavox Arcana 81
  191. Impedance question
  192. spare transformer wires?
  193. Capacitors and maximum voltage ratings
  194. Do Sweep tubes Glow Blue?
  195. Any way to upgrade this circuit? (V. 40's phono amp.)
  196. About tube "matched pairs"
  197. Testing Gm without tube tester
  198. Best place to get Shuguang 300B tubes
  199. Old metal tubes
  200. 300B pushpull- A new schematic
  201. Drake transformer
  202. TL Audio VP-5051 Valve voice processor
  203. Vtl 750
  204. DC-coupling of tube stages
  205. ThermalTrak transistor application.
  206. weird old amp:need help
  207. Triode Electronics Mark III
  208. Scavenging a broken oscilloscope to turn it into a preamp ?
  209. Scott LK150 transformer
  210. Tube Amp / Pre-amp kit?
  211. anything that can go as a Rp.....
  212. Genelex gold lion el84 reissue - ARCING
  213. Bias Current Mythbuster?
  214. Exactness of feedback capacitors?
  215. 5608a
  216. You know that you are having a bad day when.......
  217. 1U5 amplifier design, Newbie
  218. 12AU7 Pre-amp Schematic Question
  219. Beam pentodes and suppressor-grid pentodes of same type
  220. Quick question about CT and FWB
  221. Frank's 6SN7 line stage / preamp with GlassWare PS-1?
  222. SimpleSE OP Hammond bigger than the 125ESE
  223. Speaker impedance linearisation
  224. Differential filter circuit: biasing problem
  225. Curves for 12AH7
  226. Schematic for Audio Note Japan Kassai
  227. Help with schematic understanding
  228. SEPP output transformer
  229. Fixed bias design question
  230. Strange bias circuit. WTF?
  231. 5687 preamp transformer
  232. Anyone know of a dual pentode suitable for a LTP.
  233. Output transformer current and power ratings
  234. Diodes to protect OT's..
  235. Speakers for tube amps
  236. Help on power supply
  237. Line output transformer question
  238. Screen Drive Push Pull ideas
  239. 12AT7/46 Direct Reactance Drive Amp
  240. Bridge rectifier vs Full wave rectifier
  241. Isolation Transformer Question
  242. Glow tubes as series regs ?
  243. Glow tube shunt reg stability
  244. Some interesting reading about Sweep tubes
  245. What is this?
  246. What's A "Timber bulb"?
  247. aikido/807PSE and local feedback
  248. Optoisolator compressor ideas
  249. Airgap for filament transformer ?
  250. Tube stereo for E 60 including TDA1541 cd player

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