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  1. Congratulations, you just built a $2K antenna !
  2. Sonic Frontiers Line 2, please help?
  3. Sovtec 12AX7
  4. removing AC Hum on Aikido????
  5. Stereo Build - Mikaels KT88
  6. 6V6GT scematic, any good, comments?
  7. 807 vs 811A output: Sonic preference?
  8. Cheap PP OPTs
  9. Mc C-22 Ce
  10. Transformer Coupled Linestage
  11. 6CY7 Variants
  12. EZ81 rectifier noise
  13. Any good Output Transformers from China?
  14. Aikido - alive and kicking butt (not mine!)
  15. Dead Copland CTA-501
  16. Is the E86L the industrial sister of the EL86?
  17. Hammond 1630SEA, worth trying?
  18. Using Gas Regulators
  19. Cheap and Chinese KT88 SE amp
  20. Cary v12 -> V12r Conversion Questions
  21. 15 watts loud enough?
  22. ST70 hybrid finally up and running !!
  23. The Making of a Triode
  24. Spice models
  25. HV SS bench top power supply, advice needed
  26. A new Aikido is born - and kicking butt!
  27. Preamp - DIY vs Audio Research (or similar)
  28. Stromberg-Carlson 433 : Add standby or not?
  29. All-tube digital clock
  30. audible illusions dual mono preamp
  31. Siemens/Klangfim 6.4 mono question..?
  32. James 6123 OPT Wiring Help
  33. Next Bogen Conversion soon - need phase splitter advice
  34. A basic question regarding transformer laminations
  35. TOO many volts ????!!!!
  36. Dynaco Mark VI
  37. Frankenstein
  38. Unity buffer from 7-pin triode?
  39. Heathkit WA-P2 preamp
  40. Internal shield on 6922 dual triode
  41. 6cl3, 6cj3, 6dw4, 6ck3, 6ay3
  42. 418a
  43. Is it worth biasing with a distortion analyzer ???
  44. Usefulness of 6X8 tube?
  45. reducing hum in SET amps
  46. dynamic loadline
  47. Designing Transformer-Coupled Circuits...
  48. Tube-amp power issues
  49. SCA-35 Dynaco
  50. Q on voltage swing
  51. Buzz on preamp
  52. Help- I'm new!
  53. tube phono stage
  54. Schematic for Gm70!Where to find it!
  55. getting the specs on a transformer
  56. Nixie bargraph as a audio VU-meter
  57. Unique or odd uses for the diyAudio CCS boards
  58. Balanced tube preamp for class D power amps.
  59. 117v heater tube 117n7
  60. bypassing the plate-load
  61. Is this OK for a heater supply?
  62. which gauge wire for PSU????
  63. Citation II OPT?
  64. A new project, Blue Velvet Pre Amp is ready and rocks ! ! !
  65. Suggested budget pwr sply topologies?
  66. Battery for Cathode Voltage?
  67. PO'ed at RFI
  68. 12B4-A Linestage
  69. Relay Attenuator for tube amp
  70. Aikido and K-1000 headphones?
  71. post poweramp power attenuator
  72. preamp tube for metal
  73. Favorite Output Tube?
  74. CCS Grid Bias
  75. Ring of two CCS for differential triode amp - stability?
  76. Unstacking a transformer...
  77. interconnect cable 15' long
  78. Citation II oscillating, Uh oh
  79. Regulated PowerSupply for Frank's 6SN7 Preamp
  80. Regulating G2 in Pentode Operation
  81. WE310A, a confusing issue
  82. Naming conventions
  83. Newbie: Powering up Tube Amp
  84. preference between 5842 and 6c45pi
  85. Help! first tube pre-amp with 12ax7
  86. S11E12 / 12E1: best operating point ?
  87. 6j5 trasformer coupled driver/splitter
  88. A new audio tube
  89. heretical unity gain OUTPUT stage...
  90. LL1630 Pre amp
  91. EIMAC toobz : What sort of PSU ?
  92. Filament Transformer for 26 DHT
  93. Valve Pre for Chip Amp
  94. To hell with pride. I need help w. Grounded grid Pre-amp
  95. signal wiring / chassis grounding - Aikido
  96. Power rating for triode/pentode resistors
  97. Unity coupled power amp
  98. 6BX7 Outputs
  99. DIY Preamp for use with Dynaco ST70
  100. +B Power Supply Basics
  101. Tubes and their sweet spots.
  102. How to accomplish local feedback in pp amp ?
  103. Telefunken 5094
  104. Coupling caps size with grid choke?
  105. My first audio project
  106. Relationship Between Inductance And Current In Filter Choke
  107. Harmony H303A
  108. 6C4C - 6S4S - 6B4G op points?
  109. anyone mod a tube ultragain in here?
  110. EL84s glowing red
  111. Found a power transformer, what to do with it?
  112. Output section on preamp questions/breakdown.
  113. Transformer coupled 6AS7/6080
  114. Single Tube RIAA preamp too good to be true?
  115. What to make?
  116. LPT with low triodes?
  117. Ground questions
  118. Help! Upgrade a Music Angel KT88
  119. Need schematic for EL84 PSE
  120. Old OTL circuite question
  121. sub out in my 300b se? Help me please.
  122. Interstage OPT to drive 6V6 pp amplifier
  123. Voltage label on schematics...
  124. mystery purchase of the day
  125. What about the Eimac 3-500z?
  126. How much DC offset can a tube preamp take?
  127. Low voltage drop pass tube
  128. Convergent Legend Preamp
  129. vintage tube amp repair help
  130. Lasers, Tubes, and PCB
  131. 76 operating point/max plate rating?
  132. Mullard Made Tube Source Query
  133. SE Amp with NO HUM
  134. Frrank's 6Sn7 preamp...take out coupling cap??
  135. Need Schematic or help Newcomb AV-10 turntable tube amp
  136. Tube kits for beginners
  137. Lectron JH50 Tube Bias
  138. Removing LEDs from chinese amp
  139. Project madness
  140. chinese and tube Depot amps?
  141. eml 520 v2 info
  142. Rogers Cadet III Phono Stage
  143. Modding Roberts/Akai mono block tube amps
  144. Full-wave bridge
  145. Output transformers and frequency response
  146. Class A2 SET using source follower driver
  147. Rectifier that drops lots of volts?
  148. switch snubber on preamp
  149. HV supply please comment before building
  150. This is cool
  151. Gold Lion KT88 Reissues
  152. 6F8G's any good?
  153. Tung-Sol (new production) 6550s
  154. Curves, curves, and more curves
  155. Help for new design..
  156. OTL SE - Help Wanted with Idea
  157. OPTs causing crosstalk?
  158. KT88 Usable range
  159. How to change tubes ??? (NEWBIE)
  160. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  161. Need some help with potentiometer.
  162. Pinout of a UTC CG-422 power transformer
  163. Simple EL34 SET; advice?
  164. Popping Noise = Clipping ?
  165. PSU for an 813 SE
  166. Single Stage Line Amp (Diff Amp) Tube?
  167. EL 84 Edicron UK vs JJ
  168. calculating HF rolloff at 20kHz from input impedance
  169. Need info on RCA 813 used in Tube Amp
  170. Baby Huey: shunt feedback doesn't work to me
  171. Audio Innovations 800mkiii output trans needed
  172. High voltage psu
  173. First tubeamp, dont laugh too hard
  174. Newbie building d3A DRD 300B
  175. small practice amp with master volume
  176. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  177. gu81m
  178. 6sc7 vs. 6su7 in LTPI duty
  179. Cascode with ECC81(12AT7)=>Morgan Jones
  180. Where can I find these?
  181. Kofi Annan in: "Seven-Pound Mono Amp"
  182. Kofi Annan in: "Surf Bassin'"
  183. McIntosh Re-cap Questions
  184. 5881
  185. Cary Audio V12 - Schematic - Needed
  186. Anyone tried this method for OTL?
  187. Can't simulate 12AX7 with multisim 7
  188. new member, and some Electrohome PA100Mk1's
  189. Edcor Interstage for Phase Splitter?
  190. Why isodyne splitters not popular...
  191. Low Voltage phono stage for newbies
  192. 6EJ7 or 6EH7 triode strapped?
  193. New Guy
  194. Counterpoint SA20 Mosfet output rail voltage
  195. Silly Chassis Punch Question...
  196. Tube Noob question
  197. tube shop in the uk
  198. Choke question
  199. Self Bias and Fixed Bias for Big Tubes?
  200. Stromberg Carlson ASR433 Question
  201. CCS better in plate or cathode
  202. Audiophile term: "HIP test"
  203. Advice needed for tweaking S5 Electronics K-12G diy kit
  204. TV Damper Diodes
  205. 813 SE circuit,will it work?
  206. Looking for tube for application
  207. Finger joints vs. screw and glue
  208. 2C36 plate curve
  209. EL34 as preamp
  210. with DHT rectifiers, is the "+" side of the power supply...
  211. Paging Unison845
  212. Quad II - Forty
  213. my amplifiers
  214. Cheap spud amp
  215. Interesting 6L6GC Test Report
  216. 4D32 SE amplifier... help!
  217. 6AS7G with grid current?
  218. bypass switch for preamp
  219. Grounded Grid vs. Aikido
  220. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  221. Could this work? (PP amp with CCS)
  222. about newbies...and textbook..
  223. NFB capacitor to screen tap on ST-70 ?
  224. Aikido question
  225. Help with amp #2, 300B or 6550?
  226. Russian 807
  227. Searching Sound Valves M40 Monoblocks schematic
  228. Make: Bell P/A - Model: Carillon '35'
  229. Octal tubes for 7695-style matrix amp?
  230. SET recommendations
  231. Dynaco ST35
  232. Scott LK-72A is ALIVE
  233. 5687 as a single stage SE amp
  234. Changing two stereo amps into two monos
  235. UL Feedback Tap Calculation
  236. Octal pentode sub for ef86?
  237. to mach1: tubecad regulator using tl431
  238. Thermal management: it this not really of concern?
  239. Signal phase shift through a tube amp
  240. Common-mode EI PS Chokes
  241. Signal pentode in current production
  242. Pentode vs Ultralinear
  243. Bogen CHA33/CHA33Y
  244. Sheet Metal Gauge
  245. Help with 6N6p
  246. Can anyone help, identifing selenium bridge hookup please.
  247. E182CC substitution ?
  248. Face Plate Printing and Silk Screening
  249. Funky reading 12B4A?
  250. Sovtek 5Y3 Issues

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