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  1. All-tube digital clock
  2. audible illusions dual mono preamp
  3. Siemens/Klangfim 6.4 mono question..?
  4. James 6123 OPT Wiring Help
  5. Next Bogen Conversion soon - need phase splitter advice
  6. A basic question regarding transformer laminations
  7. TOO many volts ????!!!!
  8. Dynaco Mark VI
  9. Frankenstein
  10. Unity buffer from 7-pin triode?
  11. Heathkit WA-P2 preamp
  12. Internal shield on 6922 dual triode
  13. 6cl3, 6cj3, 6dw4, 6ck3, 6ay3
  14. 418a
  15. Is it worth biasing with a distortion analyzer ???
  16. Usefulness of 6X8 tube?
  17. reducing hum in SET amps
  18. dynamic loadline
  19. Designing Transformer-Coupled Circuits...
  20. Tube-amp power issues
  21. SCA-35 Dynaco
  22. Q on voltage swing
  23. Buzz on preamp
  24. Help- I'm new!
  25. tube phono stage
  26. Schematic for Gm70!Where to find it!
  27. getting the specs on a transformer
  28. Nixie bargraph as a audio VU-meter
  29. Unique or odd uses for the diyAudio CCS boards
  30. Balanced tube preamp for class D power amps.
  31. 117v heater tube 117n7
  32. bypassing the plate-load
  33. Is this OK for a heater supply?
  34. which gauge wire for PSU????
  35. Citation II OPT?
  36. A new project, Blue Velvet Pre Amp is ready and rocks ! ! !
  37. Suggested budget pwr sply topologies?
  38. Battery for Cathode Voltage?
  39. PO'ed at RFI
  40. 12B4-A Linestage
  41. Relay Attenuator for tube amp
  42. Aikido and K-1000 headphones?
  43. post poweramp power attenuator
  44. preamp tube for metal
  45. Favorite Output Tube?
  46. CCS Grid Bias
  47. Ring of two CCS for differential triode amp - stability?
  48. Unstacking a transformer...
  49. interconnect cable 15' long
  50. Citation II oscillating, Uh oh
  51. Regulated PowerSupply for Frank's 6SN7 Preamp
  52. Regulating G2 in Pentode Operation
  53. WE310A, a confusing issue
  54. Naming conventions
  55. Newbie: Powering up Tube Amp
  56. preference between 5842 and 6c45pi
  57. Help! first tube pre-amp with 12ax7
  58. S11E12 / 12E1: best operating point ?
  59. 6j5 trasformer coupled driver/splitter
  60. A new audio tube
  61. heretical unity gain OUTPUT stage...
  62. LL1630 Pre amp
  63. EIMAC toobz : What sort of PSU ?
  64. Filament Transformer for 26 DHT
  65. Valve Pre for Chip Amp
  66. To hell with pride. I need help w. Grounded grid Pre-amp
  67. signal wiring / chassis grounding - Aikido
  68. Power rating for triode/pentode resistors
  69. Unity coupled power amp
  70. 6BX7 Outputs
  71. DIY Preamp for use with Dynaco ST70
  72. +B Power Supply Basics
  73. Tubes and their sweet spots.
  74. How to accomplish local feedback in pp amp ?
  75. Telefunken 5094
  76. Coupling caps size with grid choke?
  77. My first audio project
  78. Relationship Between Inductance And Current In Filter Choke
  79. Harmony H303A
  80. 6C4C - 6S4S - 6B4G op points?
  81. anyone mod a tube ultragain in here?
  82. EL84s glowing red
  83. Found a power transformer, what to do with it?
  84. Output section on preamp questions/breakdown.
  85. Transformer coupled 6AS7/6080
  86. Single Tube RIAA preamp too good to be true?
  87. What to make?
  88. LPT with low triodes?
  89. Ground questions
  90. Help! Upgrade a Music Angel KT88
  91. Need schematic for EL84 PSE
  92. Old OTL circuite question
  93. sub out in my 300b se? Help me please.
  94. Interstage OPT to drive 6V6 pp amplifier
  95. Voltage label on schematics...
  96. mystery purchase of the day
  97. What about the Eimac 3-500z?
  98. How much DC offset can a tube preamp take?
  99. Low voltage drop pass tube
  100. Convergent Legend Preamp
  101. vintage tube amp repair help
  102. Lasers, Tubes, and PCB
  103. 76 operating point/max plate rating?
  104. Mullard Made Tube Source Query
  105. SE Amp with NO HUM
  106. Frrank's 6Sn7 preamp...take out coupling cap??
  107. Need Schematic or help Newcomb AV-10 turntable tube amp
  108. Tube kits for beginners
  109. Lectron JH50 Tube Bias
  110. Removing LEDs from chinese amp
  111. Project madness
  112. chinese and tube Depot amps?
  113. eml 520 v2 info
  114. Rogers Cadet III Phono Stage
  115. Modding Roberts/Akai mono block tube amps
  116. Full-wave bridge
  117. Output transformers and frequency response
  118. Class A2 SET using source follower driver
  119. Rectifier that drops lots of volts?
  120. switch snubber on preamp
  121. HV supply please comment before building
  122. This is cool
  123. Gold Lion KT88 Reissues
  124. 6F8G's any good?
  125. Tung-Sol (new production) 6550s
  126. Curves, curves, and more curves
  127. Help for new design..
  128. OTL SE - Help Wanted with Idea
  129. OPTs causing crosstalk?
  130. KT88 Usable range
  131. How to change tubes ??? (NEWBIE)
  132. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  133. Need some help with potentiometer.
  134. Pinout of a UTC CG-422 power transformer
  135. Simple EL34 SET; advice?
  136. Popping Noise = Clipping ?
  137. PSU for an 813 SE
  138. Single Stage Line Amp (Diff Amp) Tube?
  139. EL 84 Edicron UK vs JJ
  140. calculating HF rolloff at 20kHz from input impedance
  141. Need info on RCA 813 used in Tube Amp
  142. Baby Huey: shunt feedback doesn't work to me
  143. Audio Innovations 800mkiii output trans needed
  144. High voltage psu
  145. First tubeamp, dont laugh too hard
  146. Newbie building d3A DRD 300B
  147. small practice amp with master volume
  148. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  149. gu81m
  150. 6sc7 vs. 6su7 in LTPI duty
  151. Cascode with ECC81(12AT7)=>Morgan Jones
  152. Where can I find these?
  153. Kofi Annan in: "Seven-Pound Mono Amp"
  154. Kofi Annan in: "Surf Bassin'"
  155. McIntosh Re-cap Questions
  156. 5881
  157. Cary Audio V12 - Schematic - Needed
  158. Anyone tried this method for OTL?
  159. Can't simulate 12AX7 with multisim 7
  160. new member, and some Electrohome PA100Mk1's
  161. Edcor Interstage for Phase Splitter?
  162. Why isodyne splitters not popular...
  163. Low Voltage phono stage for newbies
  164. 6EJ7 or 6EH7 triode strapped?
  165. New Guy
  166. Counterpoint SA20 Mosfet output rail voltage
  167. Silly Chassis Punch Question...
  168. Tube Noob question
  169. tube shop in the uk
  170. Choke question
  171. Self Bias and Fixed Bias for Big Tubes?
  172. Stromberg Carlson ASR433 Question
  173. CCS better in plate or cathode
  174. Audiophile term: "HIP test"
  175. Advice needed for tweaking S5 Electronics K-12G diy kit
  176. TV Damper Diodes
  177. 813 SE circuit,will it work?
  178. Looking for tube for application
  179. Finger joints vs. screw and glue
  180. 2C36 plate curve
  181. EL34 as preamp
  182. with DHT rectifiers, is the "+" side of the power supply...
  183. Paging Unison845
  184. Quad II - Forty
  185. my amplifiers
  186. Cheap spud amp
  187. Interesting 6L6GC Test Report
  188. 4D32 SE amplifier... help!
  189. 6AS7G with grid current?
  190. bypass switch for preamp
  191. Grounded Grid vs. Aikido
  192. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  193. Could this work? (PP amp with CCS)
  194. about newbies...and textbook..
  195. NFB capacitor to screen tap on ST-70 ?
  196. Aikido question
  197. Help with amp #2, 300B or 6550?
  198. Russian 807
  199. Searching Sound Valves M40 Monoblocks schematic
  200. Make: Bell P/A - Model: Carillon '35'
  201. Octal tubes for 7695-style matrix amp?
  202. SET recommendations
  203. Dynaco ST35
  204. Scott LK-72A is ALIVE
  205. 5687 as a single stage SE amp
  206. Changing two stereo amps into two monos
  207. UL Feedback Tap Calculation
  208. Octal pentode sub for ef86?
  209. to mach1: tubecad regulator using tl431
  210. Thermal management: it this not really of concern?
  211. Signal phase shift through a tube amp
  212. Common-mode EI PS Chokes
  213. Signal pentode in current production
  214. Pentode vs Ultralinear
  215. Bogen CHA33/CHA33Y
  216. Sheet Metal Gauge
  217. Help with 6N6p
  218. Can anyone help, identifing selenium bridge hookup please.
  219. E182CC substitution ?
  220. Face Plate Printing and Silk Screening
  221. Funky reading 12B4A?
  222. Sovtek 5Y3 Issues
  223. from lilliput to gargantua (just for fun)
  224. Formula for calculating HT voltage?
  225. DIY Headamp for Sennheiser-650?
  226. Nuera Tube Amps
  227. Amplifier identification
  228. Perfect tube regulator
  229. Value of grid leak resistor
  230. Comments on this circuit
  231. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  232. Heater current monitoring...
  233. on-off switch position in PSU
  234. A better LDO heater regulator
  235. any feedback on Russian gas regulators like SG4S and etc.?
  236. Some cathode follower questions
  237. Anyone please explain"What is an A1,A2 in SE amp?
  238. What is the correct plate voltage in this circuit?
  239. Any1 have an Osmond PCB library for tubes?
  240. best type cap for preamp PSU
  241. Steve Bench PP loadlines
  242. Spice Error
  243. Anyone have a Welborne Labs amp?
  244. Please help out a Noobie...
  245. wellborne labs
  246. best schematic designer for tubes?
  247. hum in 1 channel
  248. B+ time delay relay
  249. something is wrong with the shunt regulator
  250. Suggestions for a high end tube amp kit

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