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  1. A new Aikido is born - and kicking butt!
  2. Preamp - DIY vs Audio Research (or similar)
  3. Stromberg-Carlson 433 : Add standby or not?
  4. All-tube digital clock
  5. audible illusions dual mono preamp
  6. Siemens/Klangfim 6.4 mono question..?
  7. James 6123 OPT Wiring Help
  8. Next Bogen Conversion soon - need phase splitter advice
  9. A basic question regarding transformer laminations
  10. TOO many volts ????!!!!
  11. Dynaco Mark VI
  12. Frankenstein
  13. Unity buffer from 7-pin triode?
  14. Heathkit WA-P2 preamp
  15. Internal shield on 6922 dual triode
  16. 6cl3, 6cj3, 6dw4, 6ck3, 6ay3
  17. 418a
  18. Is it worth biasing with a distortion analyzer ???
  19. Usefulness of 6X8 tube?
  20. reducing hum in SET amps
  21. dynamic loadline
  22. Designing Transformer-Coupled Circuits...
  23. Tube-amp power issues
  24. SCA-35 Dynaco
  25. Q on voltage swing
  26. Buzz on preamp
  27. Help- I'm new!
  28. tube phono stage
  29. Schematic for Gm70!Where to find it!
  30. getting the specs on a transformer
  31. Nixie bargraph as a audio VU-meter
  32. Unique or odd uses for the diyAudio CCS boards
  33. Balanced tube preamp for class D power amps.
  34. 117v heater tube 117n7
  35. bypassing the plate-load
  36. Is this OK for a heater supply?
  37. which gauge wire for PSU????
  38. Citation II OPT?
  39. A new project, Blue Velvet Pre Amp is ready and rocks ! ! !
  40. Suggested budget pwr sply topologies?
  41. Battery for Cathode Voltage?
  42. Calbest help
  43. PO'ed at RFI
  44. 12B4-A Linestage
  45. Relay Attenuator for tube amp
  46. Aikido and K-1000 headphones?
  47. post poweramp power attenuator
  48. preamp tube for metal
  49. Favorite Output Tube?
  50. CCS Grid Bias
  51. Ring of two CCS for differential triode amp - stability?
  52. Unstacking a transformer...
  53. interconnect cable 15' long
  54. Citation II oscillating, Uh oh
  55. Regulated PowerSupply for Frank's 6SN7 Preamp
  56. Regulating G2 in Pentode Operation
  57. WE310A, a confusing issue
  58. Naming conventions
  59. Newbie: Powering up Tube Amp
  60. preference between 5842 and 6c45pi
  61. Help! first tube pre-amp with 12ax7
  62. S11E12 / 12E1: best operating point ?
  63. 6j5 trasformer coupled driver/splitter
  64. A new audio tube
  65. heretical unity gain OUTPUT stage...
  66. LL1630 Pre amp
  67. New Jensen caps has no bass in..Simple EL84PP
  68. EIMAC toobz : What sort of PSU ?
  69. Filament Transformer for 26 DHT
  70. Valve Pre for Chip Amp
  71. To hell with pride. I need help w. Grounded grid Pre-amp
  72. signal wiring / chassis grounding - Aikido
  73. Power rating for triode/pentode resistors
  74. Unity coupled power amp
  75. 6BX7 Outputs
  76. DIY Preamp for use with Dynaco ST70
  77. +B Power Supply Basics
  78. Tubes and their sweet spots.
  79. How to accomplish local feedback in pp amp ?
  80. Telefunken 5094
  81. Coupling caps size with grid choke?
  82. My first audio project
  83. Relationship Between Inductance And Current In Filter Choke
  84. Harmony H303A
  85. 6C4C - 6S4S - 6B4G op points?
  86. anyone mod a tube ultragain in here?
  87. EL84s glowing red
  88. Found a power transformer, what to do with it?
  89. Output section on preamp questions/breakdown.
  90. Transformer coupled 6AS7/6080
  91. Single Tube RIAA preamp too good to be true?
  92. What to make?
  93. LPT with low µ triodes?
  94. Ground questions
  95. Help! Upgrade a Music Angel KT88
  96. Need schematic for EL84 PSE
  97. Old OTL circuite question
  98. sub out in my 300b se? Help me please.
  99. Interstage OPT to drive 6V6 pp amplifier
  100. Voltage label on schematics...
  101. mystery purchase of the day
  102. What about the Eimac 3-500z?
  103. How much DC offset can a tube preamp take?
  104. Low voltage drop pass tube
  105. Convergent Legend Preamp
  106. vintage tube amp repair help
  107. Lasers, Tubes, and PCB
  108. 76 operating point/max plate rating?
  109. Mullard Made Tube Source Query
  110. SE Amp with NO HUM
  111. Frrank's 6Sn7 preamp...take out coupling cap??
  112. Need Schematic or help Newcomb AV-10 turntable tube amp
  113. Tube kits for beginners
  114. Lectron JH50 Tube Bias
  115. Tone circuit and other guitar amp Q's
  116. Removing LEDs from chinese amp
  117. Project madness
  118. chinese and tube Depot amps?
  119. eml 520 v2 info
  120. Gibson GA20 schematic needed
  121. Potted Transformer Enclosure Suppliers?
  122. Rogers Cadet III Phono Stage
  123. Modding Roberts/Akai mono block tube amps
  124. Full-wave bridge
  125. Output transformers and frequency response
  126. Class A2 SET using source follower driver
  127. Rectifier that drops lots of volts?
  128. switch snubber on preamp
  129. HV supply please comment before building
  130. This is cool
  131. Gold Lion KT88 Reissues
  132. 6F8G's any good?
  133. Matching capacitors
  134. Tung-Sol (new production) 6550s
  135. Curves, curves, and more curves
  136. Help for new design..
  137. OTL SE - Help Wanted with Idea
  138. OPTs causing crosstalk?
  139. KT88 Usable range
  140. How to change tubes ??? (NEWBIE)
  141. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  142. Need some help with potentiometer.
  143. Pinout of a UTC CG-422 power transformer
  144. Simple EL34 SET; advice?
  145. Popping Noise = Clipping ?
  146. PSU for an 813 SE
  147. Single Stage Line Amp (Diff Amp) Tube?
  148. EL 84 Edicron UK vs JJ
  149. calculating HF rolloff at 20kHz from input impedance
  150. Need info on RCA 813 used in Tube Amp
  151. Baby Huey: shunt feedback doesn't work to me
  152. Audio Innovations 800mkiii output trans needed
  153. High voltage psu
  154. First tubeamp, dont laugh too hard
  155. Newbie building d3A DRD 300B
  156. small practice amp with master volume
  157. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  158. gu81m
  159. 6sc7 vs. 6su7 in LTPI duty
  160. Cascode with ECC81(12AT7)=>Morgan Jones
  161. Where can I find these?
  162. Kofi Annan in: "Seven-Pound Mono Amp"
  163. Kofi Annan in: "Surf Bassin'"
  164. McIntosh Re-cap Questions
  165. 5881
  166. Cary Audio V12 - Schematic - Needed
  167. Anyone tried this method for OTL?
  168. Can't simulate 12AX7 with multisim 7
  169. new member, and some Electrohome PA100Mk1's
  170. Edcor Interstage for Phase Splitter?
  171. Why isodyne splitters not popular...
  172. Low Voltage phono stage for newbies
  173. 6EJ7 or 6EH7 triode strapped?
  174. New Guy
  175. Building a Fender 5E3 Deluxe from scratch.
  176. Counterpoint SA20 Mosfet output rail voltage
  177. Silly Chassis Punch Question...
  178. Tube Noob question
  179. tube shop in the uk
  180. Choke question
  181. Self Bias and Fixed Bias for Big Tubes?
  182. page tubelab.com
  183. Stromberg Carlson ASR433 Question
  184. CCS better in plate or cathode
  185. Audiophile term: "HIP test"
  186. Advice needed for tweaking S5 Electronics K-12G diy kit
  187. TV Damper Diodes
  188. 813 SE circuit,will it work?
  189. Looking for tube for application
  190. Finger joints vs. screw and glue
  191. 2C36 plate curve
  192. EL34 as preamp
  193. with DHT rectifiers, is the "+" side of the power supply...
  194. Paging Unison845
  195. Quad II - Forty
  196. my amplifiers
  197. Cheap spud amp
  198. Dr. Z "Route 66"
  199. Interesting 6L6GC Test Report
  200. 4D32 SE amplifier... help!
  201. 6AS7G with grid current?
  202. bypass switch for preamp
  203. Grounded Grid vs. Aikido
  204. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  205. Could this work? (PP amp with CCS)
  206. about newbies...and textbook..
  207. NFB capacitor to screen tap on ST-70 ?
  208. Aikido question
  209. Help with amp #2, 300B or 6550?
  210. Russian 807
  211. Searching Sound Valves M40 Monoblocks schematic
  212. Make: Bell P/A - Model: Carillon '35'
  213. Octal tubes for 7695-style matrix amp?
  214. SET recommendations
  215. Dynaco ST35
  216. Scott LK-72A is ALIVE
  217. 5687 as a single stage SE amp
  218. Changing two stereo amps into two monos
  219. UL Feedback Tap Calculation
  220. Precision Test Equipment tube tester
  221. Octal pentode sub for ef86?
  222. Help with guitar amp sound
  223. to mach1: tubecad regulator using tl431
  224. Thermal management: it this not really of concern?
  225. Signal phase shift through a tube amp
  226. Common-mode EI PS Chokes
  227. Signal pentode in current production
  228. Pentode vs Ultralinear
  229. Bogen CHA33/CHA33Y
  230. Sheet Metal Gauge
  231. Help with 6N6p
  232. Can anyone help, identifing selenium bridge hookup please.
  233. E182CC substitution ?
  234. Face Plate Printing and Silk Screening
  235. Funky reading 12B4A?
  236. Sovtek 5Y3 Issues
  237. from lilliput to gargantua (just for fun)
  238. Formula for calculating HT voltage?
  239. DIY Headamp for Sennheiser-650?
  240. Nuera Tube Amps
  241. Amplifier identification
  242. Perfect tube regulator
  243. Value of grid leak resistor
  244. Comments on this circuit
  245. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  246. Heater current monitoring...
  247. on-off switch position in PSU
  248. A better LDO heater regulator
  249. Guitar Head Amp Schematic
  250. any feedback on Russian gas regulators like SG4S and etc.?