The Little Dot Zero is a desktop DAC and headphone amplifier combo, whose amplification stage is powered by a pair of 1T4 tubes. These allow it to reveal a sound that is both warm and fine, highlighting a great musicality. The Little Dot Zero also includes a digital/analog conversion stage, allowing it to offer a USB-B input and a Bluetooth 5.0 reception, in addition to its line input in 3.5mm jack format. In addition, the Bluetooth chip used supports high resolution transmission codecs such as aptX HD or LDAC, the latter supporting sampling rates up to 24bit 96kHz. Finally, the Little Dot Zero has a dual headphone output with 3.5mm and 6.35mm jacks.