Cary Audio Design AiOS Owner's Manual page 13

FEATURES
make audio amplifiers in excess of $22,000. However, AiOS was designed for a new age customer
and for those that love their music. Just because AiOS is very affordable doesn't mean you can't
get great sound. While most so called mini systems, or all in one systems rely on inexpensive
Class D amplifiers, we don't! Class D is a much cheaper way of designing an amplifier and is okay
for some applications, but not for enjoying music the way it was intended to be enjoyed. Actually,
the amplifier circuit alone in AiOS is the same amplifier circuit design in our $4,000 SA-200.2
amplifier with MOSFET Class A/B sound, albeit less power and using integrated micro surface
mounted devices as opposed to fully discrete components, and of course, smaller power supply,
etc. This means the sound of AiOS runs in Class A, the best sound possible, for a good range of its
power. Only when you want to rock it out does it transition to Class A/B. All the world's best
amplifiers are Class A or Class A/B designs and AiOS is no exception.
BUILT-IN EQUALIZER FUNCTION
Because AiOS is designed to be a Lifestyle product, meaning you place it where it's best for you,
we've incorporated a 15 band equalizer with a plus/minus 12dB range per band. Why is this
important? Because if you place you speaker(s) based on convenience and aesthetics around your
décor, it could affect the sound of the speakers because speaker placement is actually very
important to achieve the best sound. AiOS deals with this by providing 9 custom preset equalizer
curves including a custom setting. Regardless of the placement of your speakers this ensures
you're able to get the best possible sound by utilizing the 15 band equalizer built into AiOS and to
adjust for speaker placement as well as suit your sound and musical style preferences.
TruBit™ DSD & PCM Upsampling & PCM to DSD CONVERSION
Upsampling can be messy, leaving behind lots of digital artifacts resulting in noise and inaccurate
signal generation. On the surface, upsampling may seem like a good idea. But if not implemented
properly it can be disastrous. Typically, upsampling is done as a predefined one-size-fits-all
approach, such as 96 kHz or 384 kHz. Utilizing a dedicated 128 bit DSP engine, Cary Audio's
TruBit™ Upsampling allows for up to 10 different selectable sample rates and an increased bit
depth of 32 bits or 1 bit for DSD conversion. The result is a signal free from digital artifacts that
sounds accurate, pure, and a joy to listen to.
What's more, PCM sources can be converted to 1 of 3 DSD levels (DSD64, 128, or 256).
Alternatively, a lower native DSD source can be Upsampled to a higher DSD rate. PCM to DSD
conversion and DSD upsampling takes our TruBit™ technology to a whole new level of pure silky
smooth analog like sound like never before from digital sources.
OSO™ RECLOCKING
Once a digital signal is transferred into Cary Audio's digital ecosystem via the digital inputs, it is
processed with extreme care to ensure the best possible sound achievable. As a digital source
transfers from point A to point B it creates an insidious digital problem called 'jitter'. To deal with
this, Cary Audio developed something we call OSO™ Re-clocking. This solution re-clocks all signals
again once onboard as to ensure all jitter is virtually eliminated to a minute degree. We call this
OSO™, short for "Onboard Signal Origination" because this re-clocking and buffering creates a
signal so stable and jitter free it's as if the origin of the signal was generated onboard and not from
an external source.
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