14 posts, 1 page, 3,395 views
On the front there is channel 1 and 2 volume control and a light-up
power rocker switch. On the back there is an earth lift switch,
bridged mono switch, two sets of red/black binding posts, two jack
power outputs and on the far side there are two jack outputs with
two jack pass-throughs.
HH Electronic was acquired by Laney Electronics. You could try
contacting them. Also www.majelectronic.co.uk provide spare parts for
the older HH equipment but I didn't find any mention of the HPA3000 on
their site so I guess it must be a newer model.