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  1. Current calculation from datasheet
  2. Any one ever seen this amp?
  3. Guiguang 300B for 300Beast.....
  4. FLEA PPP, all ecc99
  5. Well, it is time to start thinking about winter projects. GM70
  6. aghhh is my tube okay?
  7. Grid Bias provided by transformer secondary winding, what is this stuff about?
  8. Zener regulated supplies
  9. OPT fore drive ribbon speaker directly; why not ?
  10. van Dorn's Octode design - recommendations for a 10W/ch version
  11. Outrageous Speaker/Amplifier Idea
  12. Anyone ever made the EL84 P-P circuit referenced on the Tubecad Journal site?
  13. Scratchy volume pot on TAD DIY deluxe reverb
  14. Cathode Follower ideas please.....
  15. Anyone used the NTE1866 VU LED driver?
  16. Any potential problems when using a combo potentiometer / power switch on a K-12 kit?
  17. Help needed understanding component values.
  18. Separate passive pre and monoblocks?
  19. My new diy site
  20. Valves and musical instruments
  21. My DC Darling
  22. Question - add LED power indicator to Aikido pre
  23. Colorful amps
  24. Aikido Cathode Follower
  25. Converting a dirty channel to clean?
  26. A few questions about transformer placement in an S5 K-12 tube amplifer
  27. Bogen AP30 and new member
  28. Adding Clean channel to AX84 P1-Ex
  29. Echocord Super 62 Feedback at Low Levels?
  30. Direct Coupled 76/5687 linestage
  31. Be kind to your 5AR4 and input capacitor
  32. New Self-Powered ROHS compliant electronic device invented!
  33. Making my first hifi tube amp.
  34. Variation on Rodīs bias servo
  35. "No Light District" P-P amplifier
  36. What kind of tubes do i have?
  37. Understanding Scope Trace Square Wave
  38. Single tube SE with EML-20B
  39. LED bias cathodyne
  40. Diagnosing hum???
  41. Posted tube microphone preamp design
  42. Finally put the Aikido in a proper chassis
  43. Tube Preamp / Headphone amp question...
  44. Phono Preamp
  45. Initial 'DQ5' testing
  46. Free Tube Amplifier Schematic Diagrams
  47. Testing with DMM
  48. The Impressive Vetruvio GM70 SET amp.
  49. Fender Twin Reverb channel 2 has no output
  50. 6sn7 subminature??
  51. One channel louder than other
  52. How to use RCP 802A tube tester test B9A tubes?
  53. phono amp question - adding input tx
  54. Ebay "clones" PCB
  55. Phase splitter and balance input
  56. At Last....First Build Complete...6V6/6SL7
  57. Amplifier input
  58. The Tube Maze
  59. Variable Harmonizer
  60. Vetruvio Audio; new competition for the Chinese?
  61. Transmitting tube-driven transmitting tube SET amp?
  62. Circlotron questions
  63. Home Grown tube amps
  64. LT108 Oscillation sounds like tube rush/white noise
  65. Cool looking tubes anyone...
  66. st70 standby switch/cathode stripping SS rect
  67. BoM for an RH84 mono build?
  68. Signal hum ideas please.
  69. E88CC turbo
  70. SRPP vs. plate loaded, musicality and details
  71. 300B/EL156 Amp
  72. Just new one .all new layout.
  73. Am I correct????
  74. Need help identifying this amp...
  75. The Maggie factor
  76. Help wiring up anLED Bar
  77. E810F/7788 Pinout name/number?
  78. Need some help with a mercury 1200 tube checker
  79. Adjust cathode bias pot - both channels move together. Why?
  80. Building a 45 SET
  81. Stereo Pententometer Questions
  82. Looking for oscilloscope recommendations.
  83. dm160 magic eye help
  84. Tube stage for acoustic guitar?
  85. Zener heater regulator
  86. Dead Time - Correcting for it
  87. ARC Power source+ 12AX7&12AU7 Pre-amplifier
  88. PTC Thermistor for auto fixed bias
  89. How do I calculate output power?
  90. Microcontrollers in tube amps
  91. Dynaco PAT4/Aikido tube preamp
  92. RCA red base 5691 / 5692
  93. Updating my amps....and "hello" :-)
  94. my first attempt
  95. Finished my first PP amp, 6SJ7-6SN7-6v6
  96. Triode PP OP stage combining Blumlein Garter and CCS bias - anyone tried this?
  97. 6U8 Revisited
  98. DePalma redux
  99. Could this be a perfectly linear triode?
  100. Grounding elevated ccs series filament supply
  101. What to do with E182CC's
  102. Angela EL34 opinions please
  103. Chinise 6N1 tube replacement
  104. Ridiculous Hallucinations
  105. Transformer Ratings
  106. dB Meter with tube circuit
  107. Suggestions for pp or se monos
  108. Low filament current tubes
  109. Tube Clearout
  110. First tube amp, it needs maintenance
  111. Need EF86 phono preamplifier shematic
  112. cannot locate documentation on SCA 9190 receiver
  113. Ecc88 pin 9 connection??
  114. VTL Compact100 Monoblock Blows Fuse
  115. 300b driver revisited.
  116. SYclotron schematic
  117. Hum problem
  118. Suppo el34
  119. my new tube experience
  120. LL1682PP Lundahl
  121. BP Ultrapath
  122. Tube shops/sellers in Kiev , Ukraine ?
  123. Headphones with tubes...
  124. A Triad xfmr for a voltage doubler PSU
  125. Ra-100
  126. Series Resistors on Outputs of Transformer?
  127. what's up !? new choke=subsonic pumping
  128. How to get the best out of the 6C33C-B?
  129. TO-220 PCB spacing for HV MOSFETs
  130. Deluxe Reverb Clone too "throaty"
  131. Using a Dynaco ST-70 audio transformer for a guitar amp
  132. Need input on Buffer stage to use in Preamp..
  133. quad output tube help
  134. "Stacking" power transformer secondaries?
  135. Tubes flare on start up!!
  136. Solid state rectifier for AC30 clone
  137. Grid Stopper Advice - Graphs Included!
  138. Western Electric settings for Hickok 600A?
  139. Wanted! single-ended 807 schematic
  140. sputtering 5u4 on diy Wheatfield amp
  141. Is this output transformer faulty?
  142. Help identify variac
  143. Schematic for TL Audio VP-5051 Voice Processor
  144. what's a good layout for a quad EL84 amp on this box?
  145. Scott 350B Tuner; Bridge Rectifier
  146. intermitent static pops from speakers st70
  147. baxandall type tone control for diff amp
  148. Stage amps using DHTs
  149. Tube+OP My headphono & preamp
  150. NFB Clarification
  151. James output transformers
  152. I just bought a an old valve amp
  153. Bias Curves
  154. Triode in Class B or Beam Pentode in Class AB2
  155. Elna Cerafine Caps
  156. help with calibrating a Tv7d/U military tube tester
  157. Cathode Follower driven Phase Inverters
  158. Help finding a tube tester for Stereo tube amps.
  159. Anything horribly wrong with this (LTP w/ LM317 as CCS)
  160. Zenith OPT question
  161. OT/Speaker impedance mismatch
  162. Goldilocks & the 3 (or more) preamp power supplies
  163. Using SE OT for PP.
  164. Need preamplifier schematic/suggestions
  165. Push-Pull vs Push-Pull-Parallel
  166. Odd/Crazy output transformer design?
  167. what 2A3 desgin recommented for home theater
  168. power supply for 10m45s
  169. How badly matched are your IXYS10M45S ?
  170. Class B Push-Pull
  171. Please comment on my design -and a few resistor values..
  172. How to lower even harmonic, keep odd one
  173. PC Mount 9-Pin Tube Socket Layout
  174. datasheet for type 52, help !!!
  175. Another kt88 Monoblock Builders Thread
  176. Question about stacked pawer supplies
  177. ys audio preamp
  178. Need help on 811A partial feedback
  179. Funny console, need ideas...
  180. SMPS experts come on in please!
  181. DC Filament supply boards
  182. Looking for vintage radio sound
  183. Channel death - Chinese EL34 PP
  184. JFET cascoded with tube gain calculation
  185. Fet 6Gk5 ECC88 mc phono stage
  186. Heathkit ol-1 oscilloscope help. Can't get solid spot during setup procedure.
  187. Operating a stereo amp in bridged mode
  188. Mic input Transformer from Triode Elect
  189. Power transformer for tube amp requirements
  190. Tape playback amp
  191. Tube for high input Z
  192. Eico 666 tube tester restoration - need grid control!
  193. Need Schematic/Manual Lambda 71
  194. Replace ECC83 preamp valve with E88CC(6922)
  195. Advice on 6P3S p-p amp schematic, feedback problem?
  196. 6S41S P-P Amp Initial Query
  197. El Cheapo, builders thread
  198. kbu608 rectifier
  199. Looking for nice sounding amp project
  200. B+ for EL84
  201. Output Transformer kt88 6550 pp, Wires? Jukebox? Help.
  202. OPT with foil secondaries
  203. Small Tube Pre Amp - Power Supply Cable
  204. Identification of unknown output transformer
  205. master volume with a extra tube
  206. 10 pounds of power for $15
  207. Unstable Eico HF-87
  208. DIY Dual Channel Active Tube Tone Control
  209. cant eliminate 50hz hum on just one side of the 6h6p headphoneamp
  210. question about the 866a
  211. Trade Custom Speaker Horns for Custom Amp
  212. TVA-1 valve amp - help
  213. Need to source a PSU chassis - simple steel
  214. What should I do with my Dynaco MKIII's
  215. inrush current
  216. Scott 222B output transformer : Compatibility and specs
  217. C3G/C3M Prices
  218. 5v3, 5u4, 5u4gb, 5u4gbm, 5931?
  219. transformer for quad EL84 SE amp - will Antek 360v work
  220. Best Possible Tube Headphone Amp
  221. Help with cheap mono SE
  222. Millkido 24
  223. 60W mono's design help
  224. Psu question - best place for the caps?
  225. 1.2W guitar amp useing:6N2P and 6N1P russian tubes.
  226. RCA jacks
  227. Hickok 530-B tester charts wanted
  228. comparison of heater termination noise
  229. Some questions about an amplifier design
  230. 2nd harmonic feedback
  231. idea's for a valve preamp
  232. Best line stage tube?
  233. Bias Adjustment point
  234. Looking for a Williamson squematics
  235. Magnavox Console Speaker Impedances
  236. first tube amp
  237. Beam Triodes
  238. Winding output transformers
  239. Anyone Have a Schematic for Wavac MD300B?
  240. PushPull vs ParalelSE
  241. Painting transformer end bells
  242. all-octal schaded pp
  243. New Wood Chassis from Hammond
  244. Strange Noise From Amp
  245. Missing components
  246. Tube headphone amplifier.
  247. Emission - Double Triode
  248. Convergent Audio Technology - where is their Hompage?
  249. Mesh Plate
  250. Cathode follower question

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