Originally Posted by
Simon Barden
The two people who started me off playing guitar both had 1960s AC30s - one was a combo, one a head and cab. But mid-late '70s, they were cheap amps - old and very few people wanted their sound at the time (apart from Brian May). They were very loud and it was rare that you could turn them up enough to get them really singing. Even though they were transistor amps, a lot of people were using HH combos because you could get a distorted sound at any volume.
Master volume valve amps were just coming into fashion, but being new, they were relatively expensive, and you still had to turn them up to get a good sound out of them that wasn't all fizzy. Most were 50W or 100W amps, so pretty loud. But this was before the days of decently powerful portable PAs, so in bigger venues, you needed the amp power. Great fun, but the cause of a lot of hearing damage.