Brook Model 4b Mono Tube Preamplifier - preamp

Description

Brook Model 4b Mono Tube Preamplifier - preamp
Rare Brook 4B mono tube preamplifier. Some scratches and staining. Please see the pictures.
Inside it appears to be all original. The AC power cord was replaced as the original was missing insulation. We will include the original with the unit. This requires an external power supply to operate, thus we are unable to test.  It does not include the umbilical cable to the amplifier.
Offering it as-is, for parts or repair.
Open to offers.
Will be well packaged for shipping. Will ship fully insured. A signature will be required.
Payment expected within 2 days of listing end.
Thanks!