Its a recto through and through.
The clean sound blows away the cleans of its bigger brothers.
Its also a bit brighter than its larger siblings. Id swear, of the current Recto line, the singles sound the best.
Sure you dont get the option of using the tube recto and all the other what nots, but if you are into more modern sounds, this amp has everything you need and nothing you dont.
This amp, like all other Rectos and many other Mesas is a bit tricky to set up. It can take a really really long time to really understand the tone stack.
Dont be fooled by the hype, the single is just as loud as all the others, it just breaks up faster. So if you are a heavy distortion type of person, this is your amp. Matter of fact, thanks to it breaking up sooner than the others, its more useable at lower volumes than any of the other big boys.
My biggest qualm with the current single rectos is that all the footswitches seem to have a slight delay in em.
Im kinda growing distant from mine, ever since I got an F100, but its definitely a great amp though.