SINGLE ENDED EL34 FIX BIAS

Single Ended Parallel 6V6 / 6N2P Fix Bias

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. 

Ivan's double 'darling' amp

This amp built for Ivan Sia from Mexter Bhd .  2x 1626 each  left and right putting about 4 watt in total.

NOS JAN -join army navy tubes - from USA . made in  1960.

 

plate voltage 260v, primary output impendence is 5k, but actual need about 3.5k (based on bob danialek schematic)

driver using 6n8s which equavelant with 6sn7 .

coupling caps using ampohm from UK.