First of all, let me say that I play fretless, and only in clean fingers. This amp is rather large rock market spot, like plectrum at the bottom so I do a priori wrong ... Requires curiosity, interesting concept and helping (compact, powerful compressor and reverb with the cool fretless) I still went to the craft.
I did not buy, just tried for an hour in good conditions.
Correct power, minimum connections, no remote damage. No output to external hp.
No sound either ...

UTILIZATION

Ben is not much to be put in the tooth, you can not program two times the same sound with different settings for example. It is a setting for each sound and basta, not practical.
In the basic sounds, 4, toss the buttons does not change at all the sound and what I heard was simply not good whatever I do. United States Jazzbass warwick corvette standard fretless, so it's not used low eh.

SOUNDS

Awful. Dull, not dynamic, confusing, really I do not see what you can find an amp like this. To learn the bass is downright negative, no details. Marshall MB30 is a far more realistic, and if you like the effects take a roland cube 30 bass that it sounds enjoyable in such small size!
Not advisable, the line6. And too expensive, the coup ...

OVERALL OPINION

Well, this is the first line6 bass, one can imagine an improvement for the following as it did between the first two generations of spider.
But I think so too, the base is too dull, it's not the lipstick that will fix the table ...

As such, this amp is bad, learn about it I see it.
The market is vast, nemesis-roland-marshall-Hartke all offer much better plans for less.
Also avoid Behringer, sounding not at all either, the analog version line6 it seems ...
I put zero, not advisable at all.
Following the severity of this test, I'm going back with my test ld110 low for me to be more objective. Obviously I did not like the first time ...