Just received a Herbert mk 3 via FedEx. It sounds really off to me - way less gain than I’d expect, and very muddy. Not at all tight like I’ve been hearing. Thinking a tube got messed up during shipment perhaps?
Here's a clip of channel 3 with everything at noon except master volume at 10 o clock.
Here's a clip of channel 3 with everything at noon except master volume at 10 o clock.