I'll be brief because much has been said.
A true 100watts (8 ohms) on HP internal or external (but not the 2 together).
Very little noise (breath) at rest and in motion.
No vibration, making serious.
What is needed as inputs / outputs.
Position "foot bath" as possible.
Very good precision settings, simplicity, efficiency.

UTILIZATION

The manual is in English, too bad, but you can get help
easy to understand.
The sound is very good very quickly, adjusting bass amp and quickly.

SOUNDS

The sound depends a lot on the bass that is used, it may be round
as slamming.
The roundness is not the same as an Ampeg for example, but very
Hon, relative to its size, of course, compare this
that is comparable is true for anything.

OVERALL OPINION

In my opinion the best quality / power / size / weight / price point (289 Euros).
(I tried a Berhinger BXL1800 Ultrabass of supposedly 160Watt (211 Euros)
-> Breath ....... and not fishing, mushy, and heavy to carry! )

For its category, its size and price, this amp is remarkable
I strongly recommend it.