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  1. Valve Pre for Chip Amp
  2. To hell with pride. I need help w. Grounded grid Pre-amp
  3. signal wiring / chassis grounding - Aikido
  4. Power rating for triode/pentode resistors
  5. Unity coupled power amp
  6. 6BX7 Outputs
  7. DIY Preamp for use with Dynaco ST70
  8. +B Power Supply Basics
  9. Tubes and their sweet spots.
  10. How to accomplish local feedback in pp amp ?
  11. Telefunken 5094
  12. Coupling caps size with grid choke?
  13. My first audio project
  14. Relationship Between Inductance And Current In Filter Choke
  15. Harmony H303A
  16. 6C4C - 6S4S - 6B4G op points?
  17. anyone mod a tube ultragain in here?
  18. EL84s glowing red
  19. Found a power transformer, what to do with it?
  20. Output section on preamp questions/breakdown.
  21. Transformer coupled 6AS7/6080
  22. Single Tube RIAA preamp too good to be true?
  23. What to make?
  24. LPT with low triodes?
  25. Ground questions
  26. Help! Upgrade a Music Angel KT88
  27. Need schematic for EL84 PSE
  28. Old OTL circuite question
  29. sub out in my 300b se? Help me please.
  30. Interstage OPT to drive 6V6 pp amplifier
  31. Voltage label on schematics...
  32. mystery purchase of the day
  33. What about the Eimac 3-500z?
  34. How much DC offset can a tube preamp take?
  35. Low voltage drop pass tube
  36. Convergent Legend Preamp
  37. vintage tube amp repair help
  38. Lasers, Tubes, and PCB
  39. 76 operating point/max plate rating?
  40. Mullard Made Tube Source Query
  41. SE Amp with NO HUM
  42. Frrank's 6Sn7 preamp...take out coupling cap??
  43. Need Schematic or help Newcomb AV-10 turntable tube amp
  44. Tube kits for beginners
  45. Lectron JH50 Tube Bias
  46. Removing LEDs from chinese amp
  47. Project madness
  48. chinese and tube Depot amps?
  49. eml 520 v2 info
  50. Potted Transformer Enclosure Suppliers?
  51. Rogers Cadet III Phono Stage
  52. Modding Roberts/Akai mono block tube amps
  53. Full-wave bridge
  54. Output transformers and frequency response
  55. Class A2 SET using source follower driver
  56. Rectifier that drops lots of volts?
  57. switch snubber on preamp
  58. HV supply please comment before building
  59. This is cool
  60. Gold Lion KT88 Reissues
  61. 6F8G's any good?
  62. Matching capacitors
  63. Tung-Sol (new production) 6550s
  64. Curves, curves, and more curves
  65. Help for new design..
  66. OTL SE - Help Wanted with Idea
  67. OPTs causing crosstalk?
  68. KT88 Usable range
  69. How to change tubes ??? (NEWBIE)
  70. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  71. Need some help with potentiometer.
  72. Pinout of a UTC CG-422 power transformer
  73. Simple EL34 SET; advice?
  74. Popping Noise = Clipping ?
  75. PSU for an 813 SE
  76. Single Stage Line Amp (Diff Amp) Tube?
  77. EL 84 Edicron UK vs JJ
  78. calculating HF rolloff at 20kHz from input impedance
  79. Need info on RCA 813 used in Tube Amp
  80. Baby Huey: shunt feedback doesn't work to me
  81. Audio Innovations 800mkiii output trans needed
  82. High voltage psu
  83. First tubeamp, dont laugh too hard
  84. Newbie building d3A DRD 300B
  85. small practice amp with master volume
  86. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  87. gu81m
  88. 6sc7 vs. 6su7 in LTPI duty
  89. Cascode with ECC81(12AT7)=>Morgan Jones
  90. Where can I find these?
  91. Kofi Annan in: "Seven-Pound Mono Amp"
  92. Kofi Annan in: "Surf Bassin'"
  93. McIntosh Re-cap Questions
  94. 5881
  95. Cary Audio V12 - Schematic - Needed
  96. Anyone tried this method for OTL?
  97. Can't simulate 12AX7 with multisim 7
  98. new member, and some Electrohome PA100Mk1's
  99. Edcor Interstage for Phase Splitter?
  100. Why isodyne splitters not popular...
  101. Low Voltage phono stage for newbies
  102. 6EJ7 or 6EH7 triode strapped?
  103. New Guy
  104. Counterpoint SA20 Mosfet output rail voltage
  105. Silly Chassis Punch Question...
  106. Tube Noob question
  107. tube shop in the uk
  108. Choke question
  109. Self Bias and Fixed Bias for Big Tubes?
  110. page tubelab.com
  111. Stromberg Carlson ASR433 Question
  112. CCS better in plate or cathode
  113. Audiophile term: "HIP test"
  114. Advice needed for tweaking S5 Electronics K-12G diy kit
  115. TV Damper Diodes
  116. 813 SE circuit,will it work?
  117. Looking for tube for application
  118. Finger joints vs. screw and glue
  119. 2C36 plate curve
  120. EL34 as preamp
  121. with DHT rectifiers, is the "+" side of the power supply...
  122. Paging Unison845
  123. Quad II - Forty
  124. my amplifiers
  125. Cheap spud amp
  126. Interesting 6L6GC Test Report
  127. 4D32 SE amplifier... help!
  128. 6AS7G with grid current?
  129. bypass switch for preamp
  130. Grounded Grid vs. Aikido
  131. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  132. Could this work? (PP amp with CCS)
  133. about newbies...and textbook..
  134. NFB capacitor to screen tap on ST-70 ?
  135. Aikido question
  136. Help with amp #2, 300B or 6550?
  137. Russian 807
  138. Searching Sound Valves M40 Monoblocks schematic
  139. Make: Bell P/A - Model: Carillon '35'
  140. Octal tubes for 7695-style matrix amp?
  141. SET recommendations
  142. Dynaco ST35
  143. Scott LK-72A is ALIVE
  144. 5687 as a single stage SE amp
  145. Changing two stereo amps into two monos
  146. UL Feedback Tap Calculation
  147. Precision Test Equipment tube tester
  148. Octal pentode sub for ef86?
  149. to mach1: tubecad regulator using tl431
  150. Thermal management: it this not really of concern?
  151. Signal phase shift through a tube amp
  152. Common-mode EI PS Chokes
  153. Signal pentode in current production
  154. Pentode vs Ultralinear
  155. Bogen CHA33/CHA33Y
  156. Sheet Metal Gauge
  157. Help with 6N6p
  158. Can anyone help, identifing selenium bridge hookup please.
  159. E182CC substitution ?
  160. Face Plate Printing and Silk Screening
  161. Funky reading 12B4A?
  162. Sovtek 5Y3 Issues
  163. from lilliput to gargantua (just for fun)
  164. Formula for calculating HT voltage?
  165. DIY Headamp for Sennheiser-650?
  166. Nuera Tube Amps
  167. Amplifier identification
  168. Perfect tube regulator
  169. Value of grid leak resistor
  170. Comments on this circuit
  171. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  172. Heater current monitoring...
  173. on-off switch position in PSU
  174. A better LDO heater regulator
  175. any feedback on Russian gas regulators like SG4S and etc.?
  176. Some cathode follower questions
  177. rectifier voltage drop
  178. Anyone please explain"What is an A1,A2 in SE amp?
  179. What is the correct plate voltage in this circuit?
  180. Any1 have an Osmond PCB library for tubes?
  181. best type cap for preamp PSU
  182. Steve Bench PP loadlines
  183. single Diode power supply?
  184. Spice Error
  185. Anyone have a Welborne Labs amp?
  186. Please help out a Noobie...
  187. wellborne labs
  188. best schematic designer for tubes?
  189. hum in 1 channel
  190. B+ time delay relay
  191. something is wrong with the shunt regulator
  192. Suggestions for a high end tube amp kit
  193. Conrad Johnson PV 7 problem
  194. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  195. Power supply dilemma
  196. Please help: no sound and blown fuse
  197. sparking Output transformer In Webcor 14x240 Amp
  198. Designing my very first tube amp...
  199. Diode bridge for Valve Buffered GC
  200. 6S41S (6C41C) Amplifier
  201. audio research sp11 upgrade help please
  202. The good, the bad, and the ugly OTL amplifiers
  203. Z2b tube rectifier
  204. Sparks inside GZ34
  205. Help with EV4417 6cm5/EL36
  206. My Cornet2 Tube Phono Preamp
  207. bright switch to bias circuit?
  208. Regulated AC...thought some of you might be interested
  209. Aikido PSU - integrated or standalone???
  210. Frank Philipse's tube site
  211. World' smallest GM-70 set
  212. Question on output hum on tube amp?
  213. Aikido Preamp
  214. Argh!!
  215. EL84 bias point
  216. Coupling cap rating
  217. Regulated power supply
  218. outstanding book??
  219. when the datasheet says "vertical mounting: up or down", does it mean...
  220. half wave rectifier will not saturate transformer core?
  221. Did I get in over my head too soon?!?
  222. Parallel output tubes
  223. Dropping filament volts/ L-W ramblings
  224. Rogers Cadet III Power problem ?
  225. about bi-cap
  226. HOT Iron ?
  227. how to set current in G Pimm's latest self-biasing CCS circuit?
  228. Low pass active tube crossover
  229. Ecological recycling amplifier (6CU6)
  230. Need ECF80 / 6BL8 tube spice 3f4 model
  231. Capacitor above chassis
  232. PS Help
  233. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  234. Transmitter tubes
  235. Power Supply Construction
  236. what are the advantages of double core output transformers vs EI ?
  237. What is a reasonable amount ripple voltage for a 300B?
  238. "Old Like" sound transformer with a Tube !
  239. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  240. P-P resistance oddity
  241. Tube preamp vs. solid state
  242. 6l6 penthode triode
  243. Rising hum when turntable is plugged into preamp ??
  244. 6SL7 or 6SL7GT for broken Tubalizer
  245. Aikido PCB and AC filaments.
  246. Help with 300b proyect.
  247. 6P14P Amp Scratch Build
  248. 6GH8 - A Little Off?
  249. design and personality
  250. An all DHT push pull amp.

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