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  1. Schematic for TL Audio VP-5051 Voice Processor
  2. what's a good layout for a quad EL84 amp on this box?
  3. Scott 350B Tuner; Bridge Rectifier
  4. intermitent static pops from speakers st70
  5. baxandall type tone control for diff amp
  6. Stage amps using DHTs
  7. Tube+OP My headphono & preamp
  8. NFB Clarification
  9. James output transformers
  10. I just bought a an old valve amp
  11. Bias Curves
  12. Triode in Class B or Beam Pentode in Class AB2
  13. Elna Cerafine Caps
  14. help with calibrating a Tv7d/U military tube tester
  15. Cathode Follower driven Phase Inverters
  16. Help finding a tube tester for Stereo tube amps.
  17. Anything horribly wrong with this (LTP w/ LM317 as CCS)
  18. Zenith OPT question
  19. OT/Speaker impedance mismatch
  20. Goldilocks & the 3 (or more) preamp power supplies
  21. Using SE OT for PP.
  22. Need preamplifier schematic/suggestions
  23. Push-Pull vs Push-Pull-Parallel
  24. Odd/Crazy output transformer design?
  25. what 2A3 desgin recommented for home theater
  26. power supply for 10m45s
  27. How badly matched are your IXYS10M45S ?
  28. Class B Push-Pull
  29. Please comment on my design -and a few resistor values..
  30. How to lower even harmonic, keep odd one
  31. PC Mount 9-Pin Tube Socket Layout
  32. datasheet for type 52, help !!!
  33. Another kt88 Monoblock Builders Thread
  34. Question about stacked pawer supplies
  35. ys audio preamp
  36. Need help on 811A partial feedback
  37. Funny console, need ideas...
  38. SMPS experts come on in please!
  39. DC Filament supply boards
  40. Looking for vintage radio sound
  41. Channel death - Chinese EL34 PP
  42. JFET cascoded with tube gain calculation
  43. Fet 6Gk5 ECC88 mc phono stage
  44. Heathkit ol-1 oscilloscope help. Can't get solid spot during setup procedure.
  45. Operating a stereo amp in bridged mode
  46. Mic input Transformer from Triode Elect
  47. Power transformer for tube amp requirements
  48. Tape playback amp
  49. Tube for high input Z
  50. Eico 666 tube tester restoration - need grid control!
  51. Need Schematic/Manual Lambda 71
  52. Replace ECC83 preamp valve with E88CC(6922)
  53. Advice on 6P3S p-p amp schematic, feedback problem?
  54. 6S41S P-P Amp Initial Query
  55. El Cheapo, builders thread
  56. kbu608 rectifier
  57. Looking for nice sounding amp project
  58. B+ for EL84
  59. Output Transformer kt88 6550 pp, Wires? Jukebox? Help.
  60. OPT with foil secondaries
  61. Small Tube Pre Amp - Power Supply Cable
  62. Identification of unknown output transformer
  63. master volume with a extra tube
  64. 10 pounds of power for $15
  65. Unstable Eico HF-87
  66. DIY Dual Channel Active Tube Tone Control
  67. cant eliminate 50hz hum on just one side of the 6h6p headphoneamp
  68. question about the 866a
  69. Trade Custom Speaker Horns for Custom Amp
  70. TVA-1 valve amp - help
  71. Need to source a PSU chassis - simple steel
  72. What should I do with my Dynaco MKIII's
  73. inrush current
  74. Scott 222B output transformer : Compatibility and specs
  75. C3G/C3M Prices
  76. 5v3, 5u4, 5u4gb, 5u4gbm, 5931?
  77. transformer for quad EL84 SE amp - will Antek 360v work
  78. Best Possible Tube Headphone Amp
  79. Help with cheap mono SE
  80. Millkido 24
  81. 60W mono's design help
  82. Psu question - best place for the caps?
  83. 1.2W guitar amp useing:6N2P and 6N1P russian tubes.
  84. RCA jacks
  85. Hickok 530-B tester charts wanted
  86. comparison of heater termination noise
  87. Some questions about an amplifier design
  88. 2nd harmonic feedback
  89. idea's for a valve preamp
  90. Best line stage tube?
  91. Bias Adjustment point
  92. Looking for a Williamson squematics
  93. Magnavox Console Speaker Impedances
  94. first tube amp
  95. Beam Triodes
  96. Winding output transformers
  97. Anyone Have a Schematic for Wavac MD300B?
  98. PushPull vs ParalelSE
  99. Painting transformer end bells
  100. all-octal schaded pp
  101. New Wood Chassis from Hammond
  102. Strange Noise From Amp
  103. Missing components
  104. Tube headphone amplifier.
  105. Emission - Double Triode
  106. Convergent Audio Technology - where is their Hompage?
  107. Mesh Plate
  108. Cathode follower question
  109. Power supply question
  110. Looking for a 866a powersupply schematic
  111. 211 or 845 project
  112. Modify Dynaco MKIII to use 6AR6s ?
  113. Yet another Dyna ST-70 Input Board
  114. Free Download Vacuum Tube Design Book
  115. driver stage for ppp 6550's
  116. power supply problem
  117. Positive/Negative Feedback
  118. Unholy Alliance Phono Amp
  119. Shrink a tube amp
  120. lampizator srpp help
  121. the secret of best preamplifier
  122. Any issues with adding a grounded power cord to a Heathkit IT-17 tube tester?
  123. HELP to ID push pull/Single Ende
  124. 12BH7,6414,and 12AT7 to drive EL34 better
  125. Testing Tube Amplifiers
  126. trade off higher HT current for lower filament current ?
  127. Any Russian analog of 12BY7 ?
  128. SV572-10 still being made?
  129. PP Output Transformer Testing Puzzle
  130. baby steps
  131. Partial FB: 2 SE + 1 PI = PP?
  132. G-807=807 SE or PP?
  133. 1Hz oscillation with CCS biased output valves
  134. Ultra-linear 6L6 output stage
  135. Transformer or capacitor coupling?
  136. Victor (JVC) Tube Amp MCM-200
  137. MiniWatt N3 problems, oscillation thumping and RF/motor problems.
  138. A2293 pins connection, help !!!
  139. Start-Up Delay for tube amp !
  140. Getting OPT in Japan?
  141. cathode follower tube buffer using 6n6p
  142. Buzz at output until tubes conduct
  143. I need help for amps.
  144. UL Connection results in higher distortion
  145. Header bypass Cap?
  146. DC heater large cap
  147. How to lower preamp output?
  148. Why use a pre amplifier
  149. DHT-buffered NOS-dac
  150. Microphonics 12AY7 v.s. 12AX7
  151. ECC99/2A3 interstage finished, but have one query
  152. Tube lovers in Germany?
  153. preamplifier
  154. Choosing grid leak resistor value -- partly subjective?
  155. What does the acronym "AMW" stand for?
  156. 6C33C distortion spectrum
  157. 6C33C OTL DC schematic needed
  158. help with identifying the cause of preamp problem
  159. Rosenblit 70w Mac amp
  160. Grounding scheme
  161. CC vs Shunt filament supply?
  162. Need opinions on boxing a dual mono line stage
  163. Lets settle the b+ on cold tubes issue!
  164. New 2A3 SET / Simple, but gentle sounding amplifier
  165. Magnavox Console Amp Chassis
  166. transformer identification
  167. 50Wrms audio amplifier
  168. 12B4 have a good sound ???
  169. almarro OPT question
  170. Best EL84pp kit??
  171. Clarion 6L6G Oscillator Amp.
  172. Did you hear an original tube sound?
  173. Designing an OTL / Circlotron
  174. Cayin A55t or AudioSpace AS-8i Mk.III
  175. filament voltage question
  176. 7236 vs 6AS7 ?
  177. Bias Circuit Calculation
  178. 6V6 Hum Issues
  179. Crossover co-axial
  180. Wurlitzer 6420 to audio amplifiers
  181. Advice on Parafeed Output Transformer
  182. mingda mc34ab mods?
  183. small and cheap OTL schematic needed
  184. ecl82 or ecl86 amplifier decision
  185. Well Here Goes... K16LS in Dynaco Chassis?
  186. Not too often you see one of those
  187. Sweet Peach vs Meng Yue EL84
  188. Attempt at giving back: 6L6GC SE amplifier
  189. Best Complete KT88 Amp Kit under $1K?
  190. Webcor Musicale OT puzzle
  191. Audio Research SP3a
  192. Preamp Conordīs with some malfunctioning
  193. Oscillating PSU above certain voltage
  194. B+ voltage load line question
  195. ming da tube amp smell
  196. Rebuilding my amp, would like some input.
  197. do any of these cv4024s seem genuine to you?
  198. Stupid question: EL34 tubes.
  199. PP with Unbalanced concertina = 2nd H?
  200. harmonic distortion
  201. Enhanced Tube's performance
  202. New GU50 SE: SRRP or Cascode for driver?
  203. Hivac XN11 tubes
  204. Conrad Johnson PV-10a hum. Any advice?
  205. Bob Carver's eye candy on eBay
  206. MFA Lumi started "motor-boating" today
  207. New GM70 tube with problem
  208. Interested in building together a 300B tube amp?
  209. cayin a-55t want to use el34
  210. Mc240
  211. Dht ?
  212. too much output impedance?
  213. College-proofing an ST-70 (aka autobias+ST-70)
  214. reverse polarity of the chinese goods?
  215. 6bg6 and 8k opt power amp project
  216. Need some calculation assist for a psu
  217. Baldwin Transformer Swap
  218. THD, s/n and IM noisy measurements
  219. Little dot 2+, got spark
  220. (INDIA) urgent - high-quality amp builders/techs in Delhi?
  221. What causes saturation in tubes?
  222. Plug and Play Power Supply
  223. GE 5814 and 12AUCIFTE
  224. Amplifier oscillates - advice sought
  225. 50s Amplifier
  226. power supply design question 832A amp
  227. Klimo power supply advice
  228. Earth Not Connected
  229. DC heater supply for phono pre
  230. Audio Note P2SE problem
  231. Aikido Transformers - Good Choice?
  232. Caps before or after MOSFET V-regulator
  233. Which capacitors should I replace?
  234. Testing Amplifiers
  235. Choosing choke valuein pre amp tube
  236. Supertriode with PNP transistors
  237. too much gain
  238. Lloyd's Vintage High Fidelity Audio Devices - both Tube and Solid State
  239. Cheap eBay "zoe_tsan" tube kits - worth anything?
  240. Bell Vintage High Fidelity Audio Devices - both Tube and Solid State
  241. Small Tube Amp with Hum
  242. tube rectifier question
  243. Unison Research S6 schematics
  244. vacuum tube amplifiers should be produced like this?
  245. 6d22s to 6cj3
  246. pot in tube preamp
  247. Mable Audio vs. Suppo audio sound quality
  248. swdfasdfsdf
  249. measuring heater voltage
  250. Need a circuit around these tubes.

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