Quad FX Core
The heart of the Xone:DB4 is the powerful Quad FX Core DSP engine, enabling each channel to have its own FX bank and BPM detection system, which automatically adjusts all time-related FX and loops to the tempo of the music. There are 5 studio quality FX types optimised for DJ use ? delays, reverbs, modulators, resonators and damage ? plus each FX type has a patch library of different effect variations. Each FX bank has a dedicated expression control and a rotary pot to set the wet/dry level, whilst further tweaking can be performed using the global controllers in the FX master section.

Looper
Each channel has a built-in looper, with selectable loop length from 1/16 beat to 4 bars.The :DB4 will always record the full 4 bars, so the loop can be expanded or shrunk at will.

Filters
Xone:DB4 comes equipped with the Xone dual filter system.

Source select
Each music channel can select any of the available stereo music sources: Analogue Line 1-4 (switchable to Phono on 2-3), Digital 1-4 or USB 1-4.

EQ / Filter
Each music channel has a 3-band EQ that can be configured as standard asymmetric EQ (+6/-25dB), Isolator (+6dB/OFF with a 24dB/octave slope), or reconfigured as a
High-Pass/Low-Pass filter system with adjustable resonance. EQ knob pointers change colour to show which type of equalization is active.

Mic/Line Input
The Mic/Line input has 2-band EQ, gain, cue and mix level. This can also be routed to
channel 1 for adding FX.

Integral Soundcard
A built-in, high quality (24-bit / 96kHz), multi-channel, fully patchable USB2 soundcard allows replay and recording from audio software for 4 stereo sends and 4 stereo returns.