All user reviews of 2/5 for the Alesis Core 1

I’ve used this interface with Ableton. The sound card is stable and provides little latency.
The interface is ergonomic: a well-built aluminium casing, and a practical line/guitar switch. This sound card is aimed at travelling musicians or for simple recording sessions (which is my case) of synths or mics (with an XLR/Jack combo input). The preamps are fine, so is the gain and there’s no obvious hiss. However, the soundcard only offers a single (and low-powered) headphone out. Don’t even consider pluggins it into a table or speakers, the resulting sound would lack precision.

A big cons has to do with a big flaw in design.
The interface ends up recording outcoming sounds. As a result, you get the metronome and other tracks that were playing recorded in the background when the recording was made.

In a nutshemm, it’s not a bad product, but this very flaw justifies this low grade. Too bad, Alesis...