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You can check your Headphones (Kopfhörer) or your speakers (Lautsprecher). This ist thought of being useful for 2.0 or 2.1. You can find other Sound Tests in my channel or my playlist. My 2.1 Sound System: amzn.to/2Fohap1 My Bluetooth Speaker: amzn.to/2K7GkXB My Headphones: amzn.to/2DqX3Ee My Midi-Controller: amzn.to/2PywYu7 High-Quality Sound Tests: amzn.to/2OMzMhK All amazon links are affiliate links. You can support me by buying something using the links. The price stays the same. Thanks! Want to work with me? Contact me: masterstudy@gmx.net