The QU02 from Quloos is a high quality USB to SPDIF and I2S digital interface, incorporating only high-end components to provide the most transparent and faithful sound reproduction possible. It can also be used as an external sound card to enhance the sound quality of a DAC or audio player.

This interface can be connected to a computer, a tablet or a smartphone for example, via its USB-B connector. The incoming signal can then be redirected to a DAC, an amplifier, a DSP or active speakers, thanks to a complete panel of outputs

A power supply stage of incredible quality

The power supply stage of the QU02 is divided into several isolated segments, each responsible for providing clean and efficient power to the various circuits of the interface, while minimizing interference that could alter the signal. This power supply stage also incorporates multiple LT3042, LT1963 and LT3693 voltage regulators, ensuring excellent performance in terms of noise and transient response. To ensure effective filtering and isolation, it also incorporates Philips 135, Philips 030, Murata, WIMA, ERO and Panasonic SMD capacitors.

Excellent performance even with a smartphone or computer

Often, USB interfaces are used with a 5V power supply from the USB input, so the sound is inevitably influenced by the quality of the input USB power supply. Because the QU02 uses a Murata power supply isolation module and abandons the 5V power supply from the USB input, the interface is completely free from the influence of this power supply mode. As a result, the sound performance is improved regardless of the source and the differences in playback between two different sources are reduced.