Roland mastered the art of great tone with classic amps like the JC-120 and their clever Cubes, plus the success of the Space Echo as a tape delay revered by the likes of Gilmour.
For the new Blues Cube amps Roland have focused in on a single revered sound, the smoky, grinding tone of classic American Tweed amplifiers. Applying the same (slightly scary) attention to detail that they did resurrecting the 808, 909 and 303 for the Aira synth series, it's fair to say Roland have reliable form in putting the sound of near mythical instruments in the hands of modern musicians. All this without the hassle and almighty maintenance bills that can come with owning the vintage originals.
Further to ease of use the latest Blues Cubes let you get scuzzy overdrive and breakup at neighbour/studio friendly volumes. Then there's the fact that you can actually blend between the Clean and Crunch channels thanks to the special Dual Tone mode. I mean you might be able to do the same thing with two valve amps, mics, mixers and sufficient isolation, that's not exactly gig friendly though is it?
With the introduction of the Artist 212, Tour Head and Cabinet models at Musikmesse 2015 you can push some air with 85+ watts of power on tap. Combine that with direct out recording, power control and the Dual Tone control and you've got the kind of live/studio flexibility that Keef would have jumped on back in the 60's. Well that is if he hadn't been so "relaxed" half the time. Indeed Eric Johnson has already got on board with Roland and created a dedicated tone capsule that captures his legendary sound.
Roland have produced an excellent blog about the Tube Logic technology behind the Blues Cubes without using too many big words or jargon.