The Xone:VF-1 is a high quality, 1U rack analogue filter unit featuring an enhanced version of the legendary Xone Filter circuits used in the award winning mixer range. Many digital filters sound synthesized and of a poor quality. The VF-1 bridges the gap between analogue sound and digital control.

FILTER TYPES

• Three different filter types are provided, High-Pass, Band-Pass and Low-Pass and these can be selected together to create further types, for instance high-pass and low-pass together create a Notch filter.
• All of the filter controls are “soft switched” to prevent clicks allowing them to be changed on the fly.

RESONANCE

• Resonance control allows the sharpness of the filter to be adjusted from a gentle roll off for a subtle filter sound, to near oscillation at maximum. Automatic
• Resonance Control (ARC) monitors the output of the filter and automatically reduces the resonant peaks of high signal levels thus minimising potentially systemdamaging
  transients.

FILTER MODES

• The filter can be configured as a stereo 2-pole (12dB/octave) or a mono 4-pole (24dB/octave) by selecting the Mono switch on the rear panel without the need to re-patch.

REAR PANEL

• Another rear panel switch, when selected, sums the inverted filter signal with the non filtered input signal and routes the remainder to the TRS jack outputs; this can give some unusual and subtle sounds, especially if routed to an effects unit.

VALVE

• As well as the VCA filter the VF-1 also has a valve (tube) input stage with drive control allowing the signal level though the valve to be progressively increased in order to create strong second harmonics or can be taken all the way into clipping. This is a great tool for adding warmth to a mix or for fattening up thin reedy bass sounds. Automatic gain reduction circuitry maintains a near constant output level as the overdrive control is increased.

ENVELOPE FOLLOWER

• An Envelope Follower with switchable release speed allows the filter cut-off frequency to be modulated by the intensity of the input signal and can be used to create some interesting effects with drum loops and bass lines, or can be switched into the valve overdrive circuits to give intensity modulated overdrive.

LFO

• A wide range LFO (low frequency oscillator) with square/triangle waveforms completes the modulation toolbox for the filter system.

MIDI

• The VF-1 can send and receive MIDI allowing the filter frequency, filter type and on/off status to be remotely controlled or saved to a sequencer. It can be configured to operate in several different modes, for instance one mode will allow it to interface to our MIDI equipped Xone:92 DJ mixer, and another to track the filters to MIDI notes.

INPUTS AND OUTPUTS

• Finally the VF-1 is equipped with a wide range of input and output connectors, including balanced XLR, TRS Jack and RCA Phono making it easy to interface to almost any system.
• A dedicated monitor output on ¼” TRS Jack is provided to allow the filtered sound to be previewed with filters bypassed.