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  1. 300B/EL156 Amp
  2. Just new one .all new layout.
  3. Am I correct????
  4. Need help identifying this amp...
  5. The Maggie factor
  6. Help wiring up anLED Bar
  7. E810F/7788 Pinout name/number?
  8. Need some help with a mercury 1200 tube checker
  9. Adjust cathode bias pot - both channels move together. Why?
  10. Building a 45 SET
  11. Stereo Pententometer Questions
  12. Looking for oscilloscope recommendations.
  13. dm160 magic eye help
  14. Tube stage for acoustic guitar?
  15. Zener heater regulator
  16. Dead Time - Correcting for it
  17. ARC Power source+ 12AX7&12AU7 Pre-amplifier
  18. PTC Thermistor for auto fixed bias
  19. How do I calculate output power?
  20. Microcontrollers in tube amps
  21. Dynaco PAT4/Aikido tube preamp
  22. RCA red base 5691 / 5692
  23. Updating my amps....and "hello" :-)
  24. my first attempt
  25. Finished my first PP amp, 6SJ7-6SN7-6v6
  26. Triode PP OP stage combining Blumlein Garter and CCS bias - anyone tried this?
  27. 6U8 Revisited
  28. DePalma redux
  29. Could this be a perfectly linear triode?
  30. Grounding elevated ccs series filament supply
  31. What to do with E182CC's
  32. Angela EL34 opinions please
  33. Chinise 6N1 tube replacement
  34. Ridiculous Hallucinations
  35. Transformer Ratings
  36. dB Meter with tube circuit
  37. Suggestions for pp or se monos
  38. Low filament current tubes
  39. Tube Clearout
  40. First tube amp, it needs maintenance
  41. Need EF86 phono preamplifier shematic
  42. cannot locate documentation on SCA 9190 receiver
  43. Ecc88 pin 9 connection??
  44. VTL Compact100 Monoblock Blows Fuse
  45. 300b driver revisited.
  46. SYclotron schematic
  47. Hum problem
  48. Suppo el34
  49. my new tube experience
  50. LL1682PP Lundahl
  51. BP Ultrapath
  52. Tube shops/sellers in Kiev , Ukraine ?
  53. Headphones with tubes...
  54. A Triad xfmr for a voltage doubler PSU
  55. Ra-100
  56. Series Resistors on Outputs of Transformer?
  57. what's up !? new choke=subsonic pumping
  58. How to get the best out of the 6C33C-B?
  59. TO-220 PCB spacing for HV MOSFETs
  60. Deluxe Reverb Clone too "throaty"
  61. Using a Dynaco ST-70 audio transformer for a guitar amp
  62. Need input on Buffer stage to use in Preamp..
  63. quad output tube help
  64. "Stacking" power transformer secondaries?
  65. Tubes flare on start up!!
  66. Solid state rectifier for AC30 clone
  67. Grid Stopper Advice - Graphs Included!
  68. Western Electric settings for Hickok 600A?
  69. Wanted! single-ended 807 schematic
  70. sputtering 5u4 on diy Wheatfield amp
  71. Is this output transformer faulty?
  72. Help identify variac
  73. Schematic for TL Audio VP-5051 Voice Processor
  74. what's a good layout for a quad EL84 amp on this box?
  75. Scott 350B Tuner; Bridge Rectifier
  76. intermitent static pops from speakers st70
  77. baxandall type tone control for diff amp
  78. Stage amps using DHTs
  79. Tube+OP My headphono & preamp
  80. NFB Clarification
  81. James output transformers
  82. I just bought a an old valve amp
  83. Bias Curves
  84. Triode in Class B or Beam Pentode in Class AB2
  85. Elna Cerafine Caps
  86. help with calibrating a Tv7d/U military tube tester
  87. Cathode Follower driven Phase Inverters
  88. Help finding a tube tester for Stereo tube amps.
  89. Anything horribly wrong with this (LTP w/ LM317 as CCS)
  90. Zenith OPT question
  91. OT/Speaker impedance mismatch
  92. Goldilocks & the 3 (or more) preamp power supplies
  93. Using SE OT for PP.
  94. Need preamplifier schematic/suggestions
  95. Push-Pull vs Push-Pull-Parallel
  96. Odd/Crazy output transformer design?
  97. what 2A3 desgin recommented for home theater
  98. power supply for 10m45s
  99. How badly matched are your IXYS10M45S ?
  100. Class B Push-Pull
  101. Please comment on my design -and a few resistor values..
  102. How to lower even harmonic, keep odd one
  103. PC Mount 9-Pin Tube Socket Layout
  104. datasheet for type 52, help !!!
  105. Another kt88 Monoblock Builders Thread
  106. Question about stacked pawer supplies
  107. ys audio preamp
  108. Need help on 811A partial feedback
  109. Funny console, need ideas...
  110. SMPS experts come on in please!
  111. DC Filament supply boards
  112. Looking for vintage radio sound
  113. Channel death - Chinese EL34 PP
  114. JFET cascoded with tube gain calculation
  115. Fet 6Gk5 ECC88 mc phono stage
  116. Heathkit ol-1 oscilloscope help. Can't get solid spot during setup procedure.
  117. Operating a stereo amp in bridged mode
  118. Mic input Transformer from Triode Elect
  119. Power transformer for tube amp requirements
  120. Tape playback amp
  121. Tube for high input Z
  122. Eico 666 tube tester restoration - need grid control!
  123. Need Schematic/Manual Lambda 71
  124. Replace ECC83 preamp valve with E88CC(6922)
  125. Advice on 6P3S p-p amp schematic, feedback problem?
  126. 6S41S P-P Amp Initial Query
  127. El Cheapo, builders thread
  128. kbu608 rectifier
  129. Looking for nice sounding amp project
  130. B+ for EL84
  131. Output Transformer kt88 6550 pp, Wires? Jukebox? Help.
  132. OPT with foil secondaries
  133. Small Tube Pre Amp - Power Supply Cable
  134. Identification of unknown output transformer
  135. master volume with a extra tube
  136. 10 pounds of power for $15
  137. Unstable Eico HF-87
  138. DIY Dual Channel Active Tube Tone Control
  139. cant eliminate 50hz hum on just one side of the 6h6p headphoneamp
  140. question about the 866a
  141. Trade Custom Speaker Horns for Custom Amp
  142. TVA-1 valve amp - help
  143. Need to source a PSU chassis - simple steel
  144. What should I do with my Dynaco MKIII's
  145. inrush current
  146. Scott 222B output transformer : Compatibility and specs
  147. C3G/C3M Prices
  148. 5v3, 5u4, 5u4gb, 5u4gbm, 5931?
  149. transformer for quad EL84 SE amp - will Antek 360v work
  150. Best Possible Tube Headphone Amp
  151. Help with cheap mono SE
  152. Millkido 24
  153. 60W mono's design help
  154. Psu question - best place for the caps?
  155. 1.2W guitar amp useing:6N2P and 6N1P russian tubes.
  156. RCA jacks
  157. Hickok 530-B tester charts wanted
  158. comparison of heater termination noise
  159. Some questions about an amplifier design
  160. 2nd harmonic feedback
  161. idea's for a valve preamp
  162. Best line stage tube?
  163. Bias Adjustment point
  164. Looking for a Williamson squematics
  165. Magnavox Console Speaker Impedances
  166. first tube amp
  167. Beam Triodes
  168. Winding output transformers
  169. Anyone Have a Schematic for Wavac MD300B?
  170. PushPull vs ParalelSE
  171. Painting transformer end bells
  172. all-octal schaded pp
  173. New Wood Chassis from Hammond
  174. Strange Noise From Amp
  175. Missing components
  176. Tube headphone amplifier.
  177. Emission - Double Triode
  178. Convergent Audio Technology - where is their Hompage?
  179. Mesh Plate
  180. Cathode follower question
  181. Power supply question
  182. Looking for a 866a powersupply schematic
  183. 211 or 845 project
  184. Modify Dynaco MKIII to use 6AR6s ?
  185. Yet another Dyna ST-70 Input Board
  186. Free Download Vacuum Tube Design Book
  187. driver stage for ppp 6550's
  188. power supply problem
  189. Positive/Negative Feedback
  190. Unholy Alliance Phono Amp
  191. Shrink a tube amp
  192. lampizator srpp help
  193. the secret of best preamplifier
  194. Any issues with adding a grounded power cord to a Heathkit IT-17 tube tester?
  195. HELP to ID push pull/Single Ende
  196. 12BH7,6414,and 12AT7 to drive EL34 better
  197. Testing Tube Amplifiers
  198. trade off higher HT current for lower filament current ?
  199. Any Russian analog of 12BY7 ?
  200. SV572-10 still being made?
  201. PP Output Transformer Testing Puzzle
  202. baby steps
  203. Partial FB: 2 SE + 1 PI = PP?
  204. G-807=807 SE or PP?
  205. 1Hz oscillation with CCS biased output valves
  206. Ultra-linear 6L6 output stage
  207. Transformer or capacitor coupling?
  208. Victor (JVC) Tube Amp MCM-200
  209. MiniWatt N3 problems, oscillation thumping and RF/motor problems.
  210. A2293 pins connection, help !!!
  211. Start-Up Delay for tube amp !
  212. Getting OPT in Japan?
  213. cathode follower tube buffer using 6n6p
  214. Buzz at output until tubes conduct
  215. I need help for amps.
  216. UL Connection results in higher distortion
  217. Header bypass Cap?
  218. DC heater large cap
  219. How to lower preamp output?
  220. Why use a pre amplifier
  221. DHT-buffered NOS-dac
  222. Microphonics 12AY7 v.s. 12AX7
  223. ECC99/2A3 interstage finished, but have one query
  224. Tube lovers in Germany?
  225. preamplifier
  226. Choosing grid leak resistor value -- partly subjective?
  227. What does the acronym "AMW" stand for?
  228. 6C33C distortion spectrum
  229. 6C33C OTL DC schematic needed
  230. help with identifying the cause of preamp problem
  231. Rosenblit 70w Mac amp
  232. Grounding scheme
  233. CC vs Shunt filament supply?
  234. Need opinions on boxing a dual mono line stage
  235. Lets settle the b+ on cold tubes issue!
  236. New 2A3 SET / Simple, but gentle sounding amplifier
  237. Magnavox Console Amp Chassis
  238. transformer identification
  239. 50Wrms audio amplifier
  240. 12B4 have a good sound ???
  241. almarro OPT question
  242. Best EL84pp kit??
  243. Clarion 6L6G Oscillator Amp.
  244. Did you hear an original tube sound?
  245. Designing an OTL / Circlotron
  246. Cayin A55t or AudioSpace AS-8i Mk.III
  247. filament voltage question
  248. 7236 vs 6AS7 ?
  249. Bias Circuit Calculation
  250. 6V6 Hum Issues

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