«  NOT BAD »

In short simple Zoom A2.1u comes with 8 banks of 10 patches each with its sounds, the first 4 banks named ABCD are editable and four other named 0123 are not, a content delivery banks are identical as follows: A0 = 00, B0 = 10, C0 = 20 and D0 = 30.
You can copy and paste or patches you want in the ABCD locations and can also edit the patches
BANKS AND O: OTHER MODELING GUITAR: OVATION MARTIN GIBSON DOBRO
BANKS AND B 1: REVERB CHORUS AND
BANKS AND C 2: SONS OF ART: CLAPTON NIRVANA .....
BANKS AND 3: FUNKY WAH WAH, NYLON STRINGS ......
I put a picture of its banks at the end of this notice

UTILIZATION

The general setup is a bit complicated which is always the case for a multi-effects pedal.
on the other hand in the manual that came no trace of the name patches in banks,
but I managed to find them there: https://www.samsontech.com/site_media/legacy_docs/A21u.pdf on page 41.
I have not tried to edit patches.
The tuner is simple and effic is very readable unlike Tc Helicon Harmony gtx (which as of the time).

SOUND QUALITY

effects are sometimes realistic sometimes useless, but with 40 effects including good
flanger, chorus, very honest and a 12-string simulation interesting, we can have fun.

OVERALL OPINION

I bought Guitar Shop today at Marseille.
The value for money is good to excellent for the model without a.2 expression pedal to € 80.
Well it is not a Tc Helicon G Natural, but it's not the same price either.