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  1. Naming conventions
  2. Newbie: Powering up Tube Amp
  3. preference between 5842 and 6c45pi
  4. Help! first tube pre-amp with 12ax7
  5. S11E12 / 12E1: best operating point ?
  6. 6j5 trasformer coupled driver/splitter
  7. A new audio tube
  8. heretical unity gain OUTPUT stage...
  9. LL1630 Pre amp
  10. New Jensen caps has no bass in..Simple EL84PP
  11. EIMAC toobz : What sort of PSU ?
  12. Filament Transformer for 26 DHT
  13. Valve Pre for Chip Amp
  14. To hell with pride. I need help w. Grounded grid Pre-amp
  15. signal wiring / chassis grounding - Aikido
  16. Power rating for triode/pentode resistors
  17. Unity coupled power amp
  18. 6BX7 Outputs
  19. DIY Preamp for use with Dynaco ST70
  20. +B Power Supply Basics
  21. Tubes and their sweet spots.
  22. How to accomplish local feedback in pp amp ?
  23. Telefunken 5094
  24. Coupling caps size with grid choke?
  25. My first audio project
  26. Relationship Between Inductance And Current In Filter Choke
  27. Harmony H303A
  28. 6C4C - 6S4S - 6B4G op points?
  29. anyone mod a tube ultragain in here?
  30. EL84s glowing red
  31. Found a power transformer, what to do with it?
  32. Output section on preamp questions/breakdown.
  33. Transformer coupled 6AS7/6080
  34. Single Tube RIAA preamp too good to be true?
  35. What to make?
  36. LPT with low triodes?
  37. Ground questions
  38. Help! Upgrade a Music Angel KT88
  39. Need schematic for EL84 PSE
  40. Old OTL circuite question
  41. sub out in my 300b se? Help me please.
  42. Interstage OPT to drive 6V6 pp amplifier
  43. Voltage label on schematics...
  44. mystery purchase of the day
  45. What about the Eimac 3-500z?
  46. How much DC offset can a tube preamp take?
  47. Low voltage drop pass tube
  48. Convergent Legend Preamp
  49. vintage tube amp repair help
  50. Lasers, Tubes, and PCB
  51. 76 operating point/max plate rating?
  52. Mullard Made Tube Source Query
  53. SE Amp with NO HUM
  54. Frrank's 6Sn7 preamp...take out coupling cap??
  55. Need Schematic or help Newcomb AV-10 turntable tube amp
  56. Tube kits for beginners
  57. Lectron JH50 Tube Bias
  58. Tone circuit and other guitar amp Q's
  59. Removing LEDs from chinese amp
  60. Project madness
  61. chinese and tube Depot amps?
  62. eml 520 v2 info
  63. Gibson GA20 schematic needed
  64. Potted Transformer Enclosure Suppliers?
  65. Rogers Cadet III Phono Stage
  66. Modding Roberts/Akai mono block tube amps
  67. Full-wave bridge
  68. Output transformers and frequency response
  69. Class A2 SET using source follower driver
  70. Rectifier that drops lots of volts?
  71. switch snubber on preamp
  72. HV supply please comment before building
  73. This is cool
  74. Gold Lion KT88 Reissues
  75. 6F8G's any good?
  76. Matching capacitors
  77. Tung-Sol (new production) 6550s
  78. Curves, curves, and more curves
  79. Help for new design..
  80. OTL SE - Help Wanted with Idea
  81. OPTs causing crosstalk?
  82. KT88 Usable range
  83. How to change tubes ??? (NEWBIE)
  84. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  85. Need some help with potentiometer.
  86. Pinout of a UTC CG-422 power transformer
  87. Simple EL34 SET; advice?
  88. Popping Noise = Clipping ?
  89. PSU for an 813 SE
  90. Single Stage Line Amp (Diff Amp) Tube?
  91. EL 84 Edicron UK vs JJ
  92. calculating HF rolloff at 20kHz from input impedance
  93. Need info on RCA 813 used in Tube Amp
  94. Baby Huey: shunt feedback doesn't work to me
  95. Audio Innovations 800mkiii output trans needed
  96. High voltage psu
  97. First tubeamp, dont laugh too hard
  98. Newbie building d3A DRD 300B
  99. small practice amp with master volume
  100. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  101. gu81m
  102. 6sc7 vs. 6su7 in LTPI duty
  103. Cascode with ECC81(12AT7)=>Morgan Jones
  104. Where can I find these?
  105. Kofi Annan in: "Seven-Pound Mono Amp"
  106. Kofi Annan in: "Surf Bassin'"
  107. McIntosh Re-cap Questions
  108. 5881
  109. Cary Audio V12 - Schematic - Needed
  110. Anyone tried this method for OTL?
  111. Can't simulate 12AX7 with multisim 7
  112. new member, and some Electrohome PA100Mk1's
  113. Edcor Interstage for Phase Splitter?
  114. Why isodyne splitters not popular...
  115. Low Voltage phono stage for newbies
  116. 6EJ7 or 6EH7 triode strapped?
  117. New Guy
  118. Counterpoint SA20 Mosfet output rail voltage
  119. Silly Chassis Punch Question...
  120. Tube Noob question
  121. tube shop in the uk
  122. Choke question
  123. Self Bias and Fixed Bias for Big Tubes?
  124. page tubelab.com
  125. Stromberg Carlson ASR433 Question
  126. CCS better in plate or cathode
  127. Audiophile term: "HIP test"
  128. Advice needed for tweaking S5 Electronics K-12G diy kit
  129. TV Damper Diodes
  130. 813 SE circuit,will it work?
  131. Looking for tube for application
  132. Finger joints vs. screw and glue
  133. 2C36 plate curve
  134. EL34 as preamp
  135. with DHT rectifiers, is the "+" side of the power supply...
  136. Paging Unison845
  137. Quad II - Forty
  138. my amplifiers
  139. Cheap spud amp
  140. Dr. Z "Route 66"
  141. Interesting 6L6GC Test Report
  142. 4D32 SE amplifier... help!
  143. 6AS7G with grid current?
  144. bypass switch for preamp
  145. Grounded Grid vs. Aikido
  146. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  147. Could this work? (PP amp with CCS)
  148. about newbies...and textbook..
  149. NFB capacitor to screen tap on ST-70 ?
  150. Aikido question
  151. Help with amp #2, 300B or 6550?
  152. Russian 807
  153. Searching Sound Valves M40 Monoblocks schematic
  154. Make: Bell P/A - Model: Carillon '35'
  155. Octal tubes for 7695-style matrix amp?
  156. SET recommendations
  157. Dynaco ST35
  158. Scott LK-72A is ALIVE
  159. 5687 as a single stage SE amp
  160. Changing two stereo amps into two monos
  161. UL Feedback Tap Calculation
  162. Precision Test Equipment tube tester
  163. Octal pentode sub for ef86?
  164. Help with guitar amp sound
  165. to mach1: tubecad regulator using tl431
  166. Thermal management: it this not really of concern?
  167. Signal phase shift through a tube amp
  168. Common-mode EI PS Chokes
  169. Signal pentode in current production
  170. Pentode vs Ultralinear
  171. Bogen CHA33/CHA33Y
  172. Sheet Metal Gauge
  173. Help with 6N6p
  174. Can anyone help, identifing selenium bridge hookup please.
  175. E182CC substitution ?
  176. Face Plate Printing and Silk Screening
  177. Funky reading 12B4A?
  178. Sovtek 5Y3 Issues
  179. from lilliput to gargantua (just for fun)
  180. Formula for calculating HT voltage?
  181. DIY Headamp for Sennheiser-650?
  182. Nuera Tube Amps
  183. Amplifier identification
  184. Perfect tube regulator
  185. Value of grid leak resistor
  186. Comments on this circuit
  187. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  188. Heater current monitoring...
  189. on-off switch position in PSU
  190. A better LDO heater regulator
  191. Guitar Head Amp Schematic
  192. any feedback on Russian gas regulators like SG4S and etc.?
  193. Some cathode follower questions
  194. rectifier voltage drop
  195. Anyone please explain"What is an A1,A2 in SE amp?
  196. Interesting link for guitar amps
  197. What is the correct plate voltage in this circuit?
  198. Any1 have an Osmond PCB library for tubes?
  199. best type cap for preamp PSU
  200. Steve Bench PP loadlines
  201. single Diode power supply?
  202. Spice Error
  203. Anyone have a Welborne Labs amp?
  204. Please help out a Noobie...
  205. wellborne labs
  206. best schematic designer for tubes?
  207. hum in 1 channel
  208. B+ time delay relay
  209. something is wrong with the shunt regulator
  210. Suggestions for a high end tube amp kit
  211. Conrad Johnson PV 7 problem
  212. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  213. Power supply dilemma
  214. Transformer Placement 5E3
  215. Please help: no sound and blown fuse
  216. sparking Output transformer In Webcor 14x240 Amp
  217. Designing my very first tube amp...
  218. Diode bridge for Valve Buffered GC
  219. 6S41S (6C41C) Amplifier
  220. audio research sp11 upgrade help please
  221. The good, the bad, and the ugly OTL amplifiers
  222. Z2b tube rectifier
  223. Sparks inside GZ34
  224. Help with EV4417 6cm5/EL36
  225. Guitar Amps, Overdrive Pedals, and Space Charged Tubes
  226. My Cornet2 Tube Phono Preamp
  227. bright switch to bias circuit?
  228. Regulated AC...thought some of you might be interested
  229. Aikido PSU - integrated or standalone???
  230. Frank Philipse's tube site
  231. World' smallest GM-70 set
  232. Question on output hum on tube amp?
  233. Aikido Preamp
  234. Argh!!
  235. EL84 bias point
  236. Coupling cap rating
  237. Regulated power supply
  238. outstanding book??
  239. when the datasheet says "vertical mounting: up or down", does it mean...
  240. half wave rectifier will not saturate transformer core?
  241. Did I get in over my head too soon?!?
  242. Parallel output tubes
  243. Dropping filament volts/ L-W ramblings
  244. Rogers Cadet III Power problem ?
  245. about bi-cap
  246. HOT Iron ?
  247. how to set current in G Pimm's latest self-biasing CCS circuit?
  248. Low pass active tube crossover
  249. Ecological recycling amplifier (6CU6)
  250. Need ECF80 / 6BL8 tube spice 3f4 model

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