When you unpack the Behringer MA400 immediately falls on the relatively large weight. It is a small metal box with 2 Drehregelrn and many connections. When headphone is an optional 3.5mm or 6.35mm jack. Here also a changeover between Mon or stereo is possible. A Mirkrophon will be closed on an XLR connector. These plugs are indeed used in audio engineering often, but I would still happy about a jack because I want to use the amplifier for my computer, so you can not avoid an adapter. The amplifier also allows the microphone signal via an output to a mixer or similar to lay. This is also achieved through a XLR connector. The last connection is the signal input from a mixer or other source via a 6.35mm jack. If a mixer is to be concluded is in the description of the recommended signal measurements via the "GND LIF" interconnect so as to prevent Ausgleichsstörsignale. This I have not tested. The two knobs on the top are like the whole amplifier process well and do not wobble. These knobs allow the volume of the microphone and external audio source control separately. Both signals can be simultaneously placed on the headset, so that a singer can hear to control himself. There are of me a star deduction, because the amplifier does not have an off switch when the amplifier is powered by the enclosed transformer with power running it. This circumstance, in my view, the main shortcoming and I can not understand why many devices can no longer be off without pulling the plug or the need to interrupt the power supply otherwise. Now for Sounqualität the amplifier: I'm testing with a Beyerdynamic DT 770 Pro in the 250 ohm version and exclusively with flac files from my computer or their Cds. After connecting the amplifier I thought playing the pieces: "Hmmm, not really different than before". But when I heard the same pieces without the Amplifier again after half an hour sounded this flat compared. The Amplifier enhances the audio output level does not slow, but it can be seen that the pieces get more volume. I liken the effect like the difference between a FLAC file and a 320ger mp3. The sound becomes fuller and rounder.
Conclusion:
Anyone looking for a cheap Amplifier to amplify a single headset gets here a good build quality coupled with a noticeable improvement of the sound perception, but this continues to display properly, that tune the environment variabelen. It should be a set of headphones available, which does not come for 5 euros from the nearest discount store and the network audio sources should not fall below a certain quality. Otherwise, a lot of fun with your new Amplifier.
