User manual
and sound very focused, producing outstanding results even 
with dynamic microphones. Soft Limit is a nice touch, too, as 
it helps avoid unpleasant-sounding overloads while lending 
a slight analogue character to sounds as they approach the 
maximum level the converters can handle. With this switched 
on, it is very difficult to overcook the signal level.
I found the touch interface so intuitive that I hardly noticed 
that there’s only one knob to adjust everything. Integration 
with the Maestro software is smooth and seamless, and using 
it to activate phantom power, polarity-invert switches and 
suchlike is actually less of a chore than bending down to find 
the physical switches on a conventional interface that might 
be stuck in a rack an arm’s reach away.
I checked out the ADAT side of the unit using an external 
eight-channel RME unit, and this locked to the Quartet with 
no fuss. Its inputs showed up as numbers 5 to 12 in the system 
and I was in business.
Impressions
We live in a world where the top professional studios use 
pretty much the same computer/software systems as those 
of us further down the food chain. The main area in which 
pro studios are better specified than project studios is in 
terms of what’s hooked up to the front and back ends of the 
computer, and the audio interface is a very big part of that. 
Yes, you can buy an audio interface with twice the I/O at half 
the price of the Quartet, but the converters and mic preamps 
will probably not sound nearly as good. On many of them, 
you can hear digital crosstalk and interference from the USB 
connection grumbling away in the background if you need to 
run the mic amps at a high gain setting, as you might when 
using a ribbon mic. I tested for this on the Quartet. Recording 
ambient room noise with a passive ribbon mic at very high 
gain settings, and then normalising the result, showed up only 
room sound and a little honest electronic hiss. There have 
been occasions when trying this test with lesser interfaces 
has produced a result reminiscent of a fax machine being fed 
through a coffee grinder.
When judging the value of something like the Quartet, 
you have to factor in what it might cost you to add decent 
mic preamps to a more mundane interface, and also the cost 
of a separate monitor controller. You also have to consider 
logistics: where is everything going to fit? The Quartet 
provides a compact solution capable of true ‘big boys’ 
performance, and the minuscule quality difference between 
it and those truly 
esoteric devices 
costing 10 times 
as much really is in 
the realm of ‘But 
will it affect record 
sales?’ 
Intel Mac with 1.5GHz processor or faster, 2GB RAM • 
minimum, 4GB recommended, OS 10.6.8 or higher.
The Quartet works with any Core Audio compatible • 
application including Logic, GarageBand, MainStage, 
Final Cut, Pro Tools, Live, Digital Performer, Studio One, 
Cubase and Nuendo.
System Requirements
£1258.80 including VAT. £
Sonic Distribution  T
+44 (0)845 500 2 500.
apogee@sonic-distribution.com
 E
www.sonic-distribution.com W
www.apogeedigital.com W
www.soundonsound.com  / November 2012
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