A great Gimick, but please do not expect HiFi sound!

I bought this Gimick - a great part for a really good price. It amplifies the speaker of the iPhone 4 really neat. BUT: I think that every potential buyer should be clear that it conjures up no HiFi sound. That's pysikalisch also impossible, because it is merely a funnel, which amplifies the sound coming from the speakers of the IPhone. Therefore: What comes out is reinforced ... As the speaker sounds by itself by phone, sounds natural for the sound from the audio funnel that. Of course, a bit crowded: Stark height- and center-weighted, little bass. Well, you have to know! But just great when the iPhone is used as an alarm clock or simply traveling in the hotel bathroom for Mucke listening! Excellent! Equally at home in places where you can not listen to music otherwise! I only say: If you want to listen to music anywhere, anytime and it wants to use the Iphone: BUY! Super sub to the course! Since the iPhone can not keep up with speakers!