I have the following for sale

Heath SB-600 speaker $40 US

Heath 'EXTENDER Board' for the SB-104 $50 US

Brand New in the box, unopened HD-1984 microphone $70 US

Heath HS-1661 speaker $35 US

RARE Heath HS-34 speaker 'mini SB-600' $50 US

Heath SA-2040 tuner $160 US

HRA-10-1 crystal calibrator $35 US

Shipping extra,,, further info, psl send me an Email.
73 Mike