Thursday, February 17, 2011

ecc83 tube preamp


tube preamp based on ecc83 , single gain stage with voltage gain approx 40. plate voltage is 230vdc.
power transformer using back to back 12v-0-12v secondary (500ma) .heater voltage 12.4vdc.

Darling Amp in local wooden box

3rd project based on Darlin Amp by Bob Danialek. Single output tubes per channel , driven by Russian Super tubes 6N2P , which has gain/character similar to 12ax7 . plate voltage power tubes ~280v , plate current draw 28mA on both tubes.