However, it must be noted that this mixer can only mix the 10 inputs (eight line and two S/PDIF) plus the stereo DAW output - it can't be used to sum ten separate outputs from the DAW mix, which is perhaps missing a trick if the mixing engine is really that good. In effect, the use of the floating-point maths provides more mix headroom, which is particularly important when summing signals. This mixer has the ability to save and recall settings, and uses 64-bit floating-point processing to maintain the best possible signal resolution. The DSP mixer just alluded to is a 10 x 10 DSP device that can route any input directly to any output with negligible latency, and which can also be used to set up five different custom stereo mixes, making it ideal for monitoring. Both the analogue and digital I/O can be used together for a maximum of ten simultaneous inputs (mixed to five stereo pairs) and all 10 outputs from the DAW are routed directly to the 10 physical output jacks of the 400F when the integral DSP mixer is switched off. According to the spec, special DSP tweaks enable particularly fast audio transfer, and hence lower latency.īoth Mac OS and Windows are supported at 24-bit resolution only and at up to 192kHz sample rate. (Multiple interfaces can be used together on Mac OS X 10.4, and Mackie are working on this capability for Windows). Unlike some competing products, though, there's no ADAT I/O, which rules out adding more I/O channels without adding another interface. There are eight balanced line outputs, S/PDIF stereo digital I/O (coaxial), and word-clock I/O on conventional BNC connectors. Next-generation AKM 24-bit/192kHz A-D and D-A converters are used to maintain the audio quality of which the Onyx preamps are capable. Housed in a conventional 1U rack case and requiring only Firewire 400 connectivity to hook up to a computer, the Onyx 400F comprises four Onyx mic/line preamp channels augmented by four further line-only channels, where the mic/line channels also benefit from analogue insert points on TRS jacks. The Onyx mixer also had a Firewire option allowing it to be used as an audio interface to computer music systems, so it wasn't entirely unexpected when Mackie announced a stand-alone Firewire interface based around their Onyx preamps. When I reviewed the Onyx mixer, I was particularly impressed by the sense of clarity and detail these preamps presented, and they come very close in performance (both subjectively and technically) to some of the extremely expensive and esoteric boutique mic preamps currently available. These preamps appear to have been designed to subtly flatter the sound in the same way that many of the popular vintage preamps do, while offering a wide dynamic range (123dB) and very low distortion (0.0007 percent THD). When Mackie introduced their Onyx mixer range, the mixer's newly designed mic preamps attracted a lot of favourable comments. Mackie's new 10-in, 10-out breakout box includes an internal DSP mixer, MIDI connectivity, and four of their high-spec Onyx preamps.
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