This all tube, 300-watt bass amp head is a modern take on classic tube heads of the past. With high and low inputs (for active or passive instruments), the preamp has a range of tonal options, from a mellow clean sound to a harder driven tone, whilst the 3-band EQ allows you to shape your bass sounds across the frequency spectrum. Useful additions are tube driven FX loop, so that pedals can still make use of the sweet tube tone, and a tube driven DI out, which allows a feed to be sent to the sound desk without having to lose the fat tube tone. For the more technical user, they can manually adjust the bias of each power tube, and replace them without having to take the whole unit to bits. The VU meter monitors either individual or overall output, and will highlight any fuse or tube failure (saving the trial and error of testing for malfunctioning tubes). This is known for its fat, warm tone with plenty of grunt and headroom that can be hard to find on solid-state amps.