Details of the Gretsch 6170 Pro Bass tube amplifier. The Pro Bass was a 1x15" 35 watt amplifier with a 1968 US list price of $187.50.
The Gretsch Pro Bass amp was described as follows:
Your basses will boom out with authoritative power to engulf the listening area no matter how large; your highs will be reproduced with scintillating brilliance when you fire up the Pro Bass. For surging drive, this is the amp for your Electric Bass.
$600
$1500
$1095
$350
$399
$2195
$1800
$400
$1700
$2195
£4500
£2300
£1795