good suggestion is grab an old mackie 1202VLZ series
they are built for battle like a tank
the pots get scratchy easily on 1202
pull it apart for getting at buttons/potentiometers
spray it down with deoxit
solder any shorts on jacks if need be
that mixer actually has good loud punchy preamps
plus it is a work/warhorse
$100 or so is the average price
besides the common scratchy pot syndrome and jacks shorting
my only other gripe is volume knobs instead of sliders
yet you will get the feel for it
even with heavy abuse it will serve you well for years
for the record also works fantastic as submixer