Not mature

A device which is to extend an existing hi-fi system with DAB but its reception (almost) any electrical device is disturbed by - there was probably not thinking.
An internal shielding of the tuner would resolve the issue.

After a few tests with the included wire antenna and the fixed roof antenna with its own Band III and FM section, a reasonable reception is possible only when the amplifier and that is not the point of it.
The trial operation of another amplifier brought the same result.

If once sufficient field strength to be present so is playing loud and clear - just DAB.
The FM capability I would call good.
Operation and setting are intuitive for a technically inclined people.

Conclusion: Returns