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

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