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CEntrance MixerFace R4

USB Audio Interface & Mixer
By Bob Thomas

CEntrance MixerFace R4

CEntrance's MixerFace R4 is a highly versatile mobile recording interface and mixer.

CEntrance, the Chicago-based audio product design consultancy founded by Michael Goodman back in 2000, probably isn't the most familiar pro-audio brand name around. However, given the company's client roster it's more than possible that, without knowing it, you have worked with audio hardware, firmware or software that CEntrance have helped to develop.

On occasion, the company also manufacture in-house products, from the MicPort and AxePort USB interfaces for microphones and guitars, through to more recent consumer hi-fi electronics. However, in late 2018, after almost five years of product development effort, CEntrance returned to audio recording and launched the MixerFace R4 Mobile Recording Interface.

The Outer Box

The MixerFace R4 is a physically compact, battery-powered combination of a four-into-two analogue mixer and an iOS, Android, Mac, Windows and Linux compatible 2x2 USB audio interface. The analogue mixer controls occupy the top surface of the R4's anodised aluminium enclosure and their layout is a good example of just how minimalist a four‑into‑two mixer can be when most functionality — apart from its analogue input setup and monitor mix — is delegated to the recording software running on the connected device.

Inputs 1 and 2 feature genuine Neutrik XLR/jack Combo connectors, with the jack input impedances individually switchable to accommodate either line-level or high‑impedance instrument sources. Each input features 3dB/octave high-pass filters at 100Hz plus global 48V phantom power, controlled by recessed microswitches....

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Published March 2019