Capture great audio moments with the SDR-4000 Dual Digital USB/SD Audio Recorder. The SDR-4000 operates just like two cassette decks but with the benefit of all digital recording. The digital recording process ensures high-fidelity audio recordings all the time and an adjustable recording level control allows you to avoid distorted recordings and get the level just right. Also functioning as a dual side digital audio player, the SDR-4000 makes a great addition to a DJ setup for easy digital media playback.Not just for performers, the SDR-4000 is perfect for churches, businesses and schools that need to record sermons, presentations or lessons. So, retire the old tape deck and pick up an SDR-4000!