The UBK-1 brings the sort of colour you'd naturally get in the analogue domain to a mix. Generally, it's very warm and very fat, and it particularly excels when deployed for heavy drum mishandling or, alternatively, used lightly on spacious productions.
It's a three-stage processor: firstly, the Saturation processor generates pleasant harmonic distortion, softens transients without losing too much attack, and includes a wet/dry mix control for parallel processing.
A choice of five compressor models is on offer; each has its own particular response character and a descriptive name (Splat, Smooth, etc). Pick one, set the dial somewhere between Mild and Intense, and adjust the wet/dry mix - compression doesn't ever get much easier than this.
Finally, the Density processor adds subtle substance to the top or mid-range of the sound. Essentially a combination of frequency-selective compression and saturation, it's heavily dependent on the results of the previous sections.
Sonically stunning, UBK-1 excels at bringing authentic, flavoursome analogue character to drums, acoustic instruments and mixes.4 Stars