but honestly ...

First of all, this thing is really good!
But the enthusiastic reviews push me to the statement that you have still on the appropriate price range. A good stereo system replaced it definitely is not. (A cheap probably already)

Sure, the Z-2300 is by far the best solution that you can get for this money.
Sure, the bass is really strong. For example, if Eminem rotates in the drive, then vibrates the desk and even my screen flickers questionable (from the bass, not from the magnet!). But the bass of my stereo system is simply much nicer, not as cold and not sound like cheaper car stereo Prolo equipment because so sounds the Z in 2300 already, about should not ignore it.
Who also the beautiful strokes of the bass in the pit of my stomach ... expected, but the chassis is just not quite suitable. (Logo)
As previously distorted too much, but he is by far still crisp enough!
Even the bass is very dynamic and even extended bass orgies (Eric Burdon / Robbie Burns) leave little fatigue from the built-in amplifier recognize.

The highs are clear and brilliant and not at all tinny, but also marked by a cold tone. (Even logo)

The centers were not neglected. (See below)

The classical sound I've tested the Mozart Concerto for Violin and Piano. That really sounds good. (Always relative thinking) A full orchestra but tidy to rich, detailed soloists. The bass can also Timpani effect full effect (even if it sounds a little misplaced, it is quite funny)

Voices of Jazz Vocalists (Ana Caram, Rebecca Pidgeon and Katie Melua also Thessink and Keb Mo) are perfectly fine. Very clear, very present and airy enough. Also good intelligibility.
Sequences with many instruments remain tidy and not to mush. However, you should go down with the bass control something because accompanying basses too much to the fore and distort quickly.
Then, however, the fullness of voice suffers somewhat. (Who has a good equalizer is a clear advantage)

But you have time to come down to the ground and see clearly what is at stake here. A PC-Box should not be judged by hifi standards you, to have not fit the CD drive, etc..
It is even quite amazing how far the Z-2300 extends the stereo systems segment.
Who has only one Aldi-cheap stereo at home is they no longer need, who needs the sound to play, or to watch movies with good sound, which can not get on the Z2300. This is ideal and brings really good sound.

It is interesting that you no longer want to hear bad ribbed MP3s because the Z-2300 can be heard very clearly the differences.
Have the first Eminem from the hard drive as MP3 heard, and was initially shocked and thought the boxes are so bad. Then I got the CD set in the drive and breathed hab.
So if you want to hear after buying the Z-2300 still will not rip your CDs MP3s with biligen programs a la MusicMatch and consorts but take the Audiograbber / Lame (also diet of nothing) and not saving with the bit rate !!

Those who want something more rausholen sound should get especially for the subwoofer some good rubber feet or a few spikes. (Who wants to spend no more money will also halved old tennis balls to achieve something)

Moreover, even the very good workmanship should be emphasized. The gibts even unheard about most often more expensive devices.
Even the packaging makes this impression.
Slightly longer speaker cables I would have liked. In the dense formation criteria can as spatiality and perceived positioning hardly assessed.

Conclusion:
Incredibly good price / performance ratio.
Great sound and powerful bass.
Really nice to processing in detail.
Even listening to music is fun
Strong buy recommendation

Addendum after 5 years of operation:
As before, the Z 2300 runs flawlessly and gives me great pleasure. Wear are in speakers yes inevitable, but I can not really notice something subjective.
A small repair I had two years ago.
When zooming in and immediately turn off the system is probably blown something. (Not the backup)
A small repair shop, it has repaired my back for 15 euros.