Very "old school" sound, reminds me of my Ampeg B-100R, it's very similar, 100 watts, 1-15", no tweeter.
Definetly not a modern "high tech" sound. At first I thought maybe it was 'cause I was playing a Fender Jazz with flats thru it, so I tried a new Yamaha BB614 with active EQ and rounds, still didn't get too clanky. I dig it.