It may be that the ATV resamples the data since it is also a video device.
You can get hi-res from the ATV by adding a Synchro-Mesh, which also reduces jitter significantly. The output is 24/96 in the standard version or optionally 44.1. The ATV and AirPort Express are notorious for higher jitter and need a reclocker like the Synchro-Mesh for music to sound good. Most modern DACs sound better with 24/96 because of the digital filter used in the DAC with that sample-rate. You get both hi-res and low jitter with the Synchro-Mesh.
You can add the Dynamo power supply option and make it world-class too.
Synchro-Mesh:
http://www.empiricalaudio.com/products/synchro-mesh
Steve N.
Empirical Audio
You can get hi-res from the ATV by adding a Synchro-Mesh, which also reduces jitter significantly. The output is 24/96 in the standard version or optionally 44.1. The ATV and AirPort Express are notorious for higher jitter and need a reclocker like the Synchro-Mesh for music to sound good. Most modern DACs sound better with 24/96 because of the digital filter used in the DAC with that sample-rate. You get both hi-res and low jitter with the Synchro-Mesh.
You can add the Dynamo power supply option and make it world-class too.
Synchro-Mesh:
http://www.empiricalaudio.com/products/synchro-mesh
Steve N.
Empirical Audio