Nobsound DA3 HIFI Bluetooth Tube Power Amplifier with COAX/OPT/USB IN

Versatile Connectivity: In addition to standard RCA inputs and speaker outputs, the DA3 offers Bluetooth connection, USB lossless playback, optical/coaxial inputs, a PRE OUT for active subwoofers, and a 3.5mm headphone output for broad device compatibility. Warm Tube Sound: Featuring two Beijing 6J1 tubes in the preamp stage, the DA3 delivers a rich, smooth, and warm sound. The tube design adds a subtle harmonic richness that makes vocals sound natural and detailed. Customizable Sound Tuning: Fine-tune your audio with independent treble/bass adjustments, allowing you to customize your listening experience and achieve the perfect sound balance for any genre.