Pros: Clear detailed sound, very small and cute, easy upgrades.
Top ratings for this small, cute and very well priced DAC. My sound comparison is with a Musical Fidelity V-DAC and the Fubar2 has more detail, dynamic and greater clarity. It can be easily upgraded with a change of the opamp and the addition of a power supply unit called The Supplier at $144.
It is beautifully made and some of the older versions have a cute comedy dog logo on the front of them. Otherwise they have been available in black, silver and red.
Operation is very simple. Just connect the supplied USB cable to your PC and the DAC downloads its own proprietary driver and it is ready to go.
There is only a USB connection, but do not be put off by stories that USB is somehow inferior to other digital connections. This, and other USB DACs are designed to work within the parameters of USB. (It does not take its power from the USB connection).
Please note, Firestone Audio is often referred to as Audiophile Products, however that is the name of a seller in the US. Firestone Audio is the manufacturer based in Taiwan.