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  1. Russian Tubes
  2. Help a first timer to select...
  3. GE 5692 BLACK base?
  4. sources on the web for chinese amps
  5. How much capacitance in a power supply
  6. Parallel 12AT7 for 2A3 driver?
  7. Maida's regulator
  8. Common Mode Chokes for Heater Supplies
  9. Ming Da MC34B....passive or active pre amp?
  10. tube power supply upgrade... elna's, RTX, infinicap
  11. What tube do you think this OPT matches?
  12. safety fuse
  13. Short and sweet review of Sun Audio SV-300BE
  14. Help selecting a DIY schematic
  15. OP Transformer power rating guesstimate
  16. need a lot help on an el34 project :P
  17. Anode Follower
  18. CCS for tubes/valves: PCBs
  19. Improvement to DM's Generic Triode Model for 12AU7
  20. ccs, direct coupling and stuff
  21. Replica Pre QUAD 22 - Questions on mids
  22. Is this cap ok for audio?
  23. Remote Controlled Stepped Attenuator
  24. UltraLinear in toroidal parafeed, my findings.
  25. Help to tame a 12AX7/6AQ5 circuit
  26. DIY something like iMPAMP??
  27. Have you seen this tester?
  28. Help with taming a 12AX7 and 6AQ5a amp
  29. Linear Technology 1083CP adjusting problem
  30. radiation tubes
  31. 813 socket dimensions
  32. Cheap SE output transformers
  33. BIAS and B+ caps WKZ or NH
  34. Cleaning tubes...
  35. Manfred Huber
  36. IEC standards, anywhere?
  37. possible volume and balance control - does this look like it will work well?
  38. EL84 Amp - Baby Huey
  39. 6X4
  40. What do you guys use for HV toggles?
  41. Balanced Operation Output Transformer Questions from N00b
  42. Static stain cleaning
  43. 12AX7 preamp project
  44. SE 1.5W OTL
  45. Cross-coupled NFB for PP Pentode
  46. Parallel triodes - CONS?
  47. output transformer spec questions
  48. Choosing Valve
  49. opinions wanted - Lafayette Stereo 224 Tube Amp
  50. New KT77 Tubes by JJ
  51. 60HL5?
  52. Standby switch
  53. Problems With Simple Gounded Cathode Gain Stage
  54. srpp 6c33c
  55. Mullard 5-20/Maplin 4-20 modification to NON-Ultra Linear mode????
  56. Anyone in gta know their tubes?
  57. 801 low power SE amp
  58. superalloy ( 78% nickel/2%cobalt) EI-66 with Furukawa ultimate wire.
  59. OPT resistance for EL84 PP Class A
  60. Whats in this amplifier?
  61. Whose logo?
  62. pentode phase splitter
  63. Is this EL84M UL PP OK?
  64. Tube preamp question...also, chassis layout
  65. Quad II Mods/Tweeks
  66. Trying to recreate a Fisher SA-16
  67. CCS, how it actually works?
  68. 400V CRC PS, what do I do with it?
  69. Does anyone has MILBERT BAM230 TUBE CAR POWER AMPLIFIER
  70. Valve sockets
  71. Can I use 12AT7?
  72. Music Reference RM5 mkIII
  73. Help: Sun Audio Kits where from? EIFL, ELEX, Sun Audio?
  74. Looking for a link on power supply design
  75. Is feedback required for UL EL84PP?
  76. Someone working on an insane tube project?
  77. Load line frustration
  78. Is 12B4/A good for differential pair?
  79. Heretical Unity Gain line stage PLUS a little gain ?
  80. tube vibration
  81. Small temp voltage on phono input-problem?
  82. What's it all about?
  83. IXYS GaAs Schottky Diodes.
  84. Maplin 4-20
  85. Line preamp using 2 ECC88 per channel
  86. What to use as a nice amp case?
  87. Signal Tube Longevity ?!?
  88. HK 250 power amp tube amp schematic
  89. Need help with connecting OPT.
  90. 6SL7 driving SE EL34 ?
  91. power supply tranny
  92. Output Transformer Background
  93. Schematic
  94. no dc passing the opt
  95. New preamp schematics
  96. Transformer ID & Specs Sheet Help
  97. I Know Some Tube Flavors Are Worth More Than Others...
  98. Why hybrid CCS?
  99. Alembic F-2B
  100. Best cap to cathode tube bypass is ..
  101. Cheap el84 se
  102. Bridge rectifier with capacitors???
  103. 4 volt (dc?) heater from 6.3v
  104. Does anyone recognise this valve amp
  105. PS Capacitor Voltage Rating
  106. Which 6SN7 preamp should I build?
  107. Help on upgrading my Tube Preamp
  108. looking for a non-copyrighted preamp schematic
  109. Problems with cathodyne
  110. more gain needed -> how?
  111. OT: Tribute to Kondo-San
  112. PCL82 SE Tube Amplifier Kit
  113. Rectifier voltage difference, Why?
  114. partial feedback stuff
  115. replace 5y3
  116. Sparking Tubes!
  117. Transformer End Bells
  118. DHT Ultrapath Linestage schematic help
  119. Who manufactured are these EL34's?
  120. Tubes and RoHS compliance?
  121. What do you think about this tube preamp?
  122. What's Ra?
  123. Screen grid resistors
  124. Miller compensation - pros/cons?
  125. G. Kaufman's 6GV8/ECL85 regulated psu
  126. 6CA4/EZ81 heater bias
  127. First stab with PSD for 6CK4 amp-what have I got here?
  128. 81 Rectifier
  129. using 40 VDC supply?
  130. Choke current
  131. Why two diodes per branch on a full wave rectifier?
  132. Alps attenuators
  133. Seeking quality PP pre/mono power project (long)
  134. Transformer location
  135. proper choke placement
  136. 6HE5 as output pentode?
  137. A possible good source for steel chassis
  138. Update on DIY 7591 PP bias cap issue!
  139. 832, can you go SE with these?
  140. PX25 SE without NFB
  141. Change my 8417's Quicksilvers to this?
  142. SE EL84 circuit for bi-amp setup?
  143. CLCLC PSU for 6P14P-EV PP
  144. Shielding a Power Tranny
  145. Unison Research Schema Needed
  146. My 2A3 schematic, comments please.
  147. What happend to the PHOTO GALLERY ?
  148. Valve pre-amp maintenance and purchase
  149. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  150. TPAD Devices Kit
  151. Need Help. Anyone with Philips AG 9016??
  152. Question about input sensitivity?
  153. Any help on sth probably simple?
  154. few questions about my amp, pls come in
  155. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  156. Need regulated solid state PSU
  157. EC31 - Any Datasheet...?
  158. comments on www.shinrock.com???
  159. need schematic reading help
  160. Sound from dummy load?
  161. Loftin-White
  162. RCA 151 'scope
  163. Coupling cap. values???
  164. stepped attenuator
  165. Ideas for input/driver stage of 300B amp
  166. Schematics for Bogen MXM-A Mixer?
  167. yet another which cap is best for the money question
  168. Lowering the value of the lead resistor
  169. power supply recommendation for EL84 amp
  170. Can ECC40 be used in a phono stage?
  171. Better current source than LM317 on a 12B4 line amp
  172. Bias and max current for my 7591 AB amp...
  173. Making sense of the Aikido calculations?
  174. Computer Grade Capacitors
  175. Pls recommend a power amp to build?
  176. Advice about this 45 amp
  177. Any definitive infor on R-C parafeed out there?
  178. 6AS7 as rectifier tube?
  179. Pre Amps
  180. 12 volt preamp
  181. JE LAB's 2001 2A3 & Preamp???
  182. 12AX7WA
  183. found DIY amp - now what?
  184. Magic Eye spectrum analyzer
  185. Tube Companies
  186. B+ from GZ34 Heater CT ?
  187. Unknown mA on Gardners mains transformer
  188. PSU Question
  189. how to mount rca jacks and volume control in wood enclosure?
  190. Freaky Whistle in Guitar Amp
  191. Giaime's last nightmare - aka RIAA faceoff
  192. 5687 dc 5687 tube amp need help
  193. Input cap needed
  194. 6BQ5\EL84 line amp
  195. Capacitor Values Why so high? & What can I do?
  196. Bias pot question
  197. What I have: 4 Tubes. What I need...
  198. let me fix this bias
  199. A small no-fuss pentode/pentode SE amp
  200. Bleeder Resistor Placement
  201. Modifying Heathkit AA 151
  202. Interstage transformer for PI.
  203. Motorrun caps ... GND side?
  204. mono center channel out to stereo
  205. Audio Research REF 2 MkII
  206. 717a plate volts
  207. valve preamp criticisms?
  208. LOT of tubes. what can I do?
  209. substitution for 7355
  210. KT88 heaters
  211. Software for drawing tube schematics?
  212. Guitar Amp HUUUM with an MP3! Reverb Problem
  213. New books posted
  214. Compound bias
  215. Tube Oscillation or Microphonic Question
  216. WTB:OT for el 34 35 watt tube amplifier
  217. Questions on 6H30 simple PF?
  218. "Super Davohm" 1w .1% wirewound
  219. Heathkit AA-100
  220. 6159 for SE Power amp
  221. Do SMPS have a home at high end audio?
  222. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  223. cathode capacitance on anode follower
  224. looking for a building shematic for ECLL800
  225. Iron learning.
  226. Tube Amp - Crackling Sound on Left Channel
  227. Pspice preamp simulation
  228. Supply voltage for 12v6 12B4 heaters
  229. New project and my first circuit...
  230. Champ clone fried my soundcard
  231. Choke coupled phase invertor
  232. long cable line drive
  233. What To Do?
  234. Simple Method To Measure Source Resistance?
  235. is this true????
  236. query on the PSU of a preamp
  237. Meshplate Help needed
  238. 6072 tube preamplifier.
  239. hybrid rectifiers and PIV rating
  240. transformerless amp help plz ...
  241. Help me build a tube MIC preamp plz
  242. chinese 845 amp blowing fuses
  243. Question about PIV rating of diodes...
  244. Triode strapped heptode?
  245. The Fisher 500C/800C Challenge (long..dialup warning)
  246. 5 wire output transformer
  247. Orcad & tube library
  248. Wall Wart Tube Power
  249. How can I lower B+ of power supply?
  250. How do you put a CCS under a diff. pair of DHTs???

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