The Cayin TI-120 (Signature M) is a high-performance desktop USB DAC (Digital to Analog Converter) and headphone amplifier designed for audiophiles. It supports various digital audio formats, including PCM up to 32-bit/768kHz and DSD up to 11.2MHz.One of the unique features of the TI-120 is its Signature M gain stage technology, which claims to enhance micro-details, dynamics, and timbre in the music. It has a range of output modes, including balanced, single-ended, and stereo differential, providing flexibility for different headphone and amplifier configurations.The TI-120 also features Cayin's proprietary iVolume technology, which allows users to adjust the volume without interfering with the digital source's clock or jitter. It also supports USB Audio Class 2.0, ensuring compatibility with most operating systems and software.In terms of build quality, the TI-120 has a solid CNC-machined aluminum enclosure with a subtle textured finish that looks and feels premium. It has large input and output selection buttons, a volume knob, and a round OLED screen that displays the selected inputs and sample rates.Overall, the Cayin TI-120 (Signature M) is a high-end desktop DAC and headphone amplifier that delivers exceptional sound quality, flexibility, and build quality. It is suitable for audiophiles who prioritize audio fidelity, detail, and durability. Its Signature M gain stage technology, iVolume technology, and extensive digital audio support make it an attractive option for music lovers who prefer a premium desktop audio solution.