Blue Stripe silver face.
condition example of this venerable unit.
recapped, with 1 year warranty.
distinction of the 'B' revision is that a bipolar transistor has replaced the FET’s
in the pre-amp. There was also a tap off of the first transistor in the input
stage, which provides a replica of the input voltage to the voltage variable
resistor. Other characteristics remain the same as version ‘A/B’.