What the numbers mean
Sample rate sets the highest frequency a file can hold: 44.1 kHz covers up to about 22 kHz, beyond the limit of adult hearing. Bit depth sets the noise floor: 16 bits gives about 96 dB of range, 24 bits about 144 dB, more than any room or amplifier can use.
What listening tests suggest
Controlled blind tests between well-made 24/96 and 16/44.1 versions of the same master mostly find small or no differences. Where differences appear, they tend to be tiny and dependent on the equipment and the listener.
When hi-res files really are better
- A different master. Hi-res releases are often mastered with more dynamic range than the loud CD. That difference is real and easy to hear, and it has nothing to do with the numbers.
- Headroom for processing. 24 bits leave room for EQ and volume changes without adding audible noise.
- Archiving. A 24-bit master is the better source to keep.
What matters more
A player that does not damage the file. Truncating 24-bit to 16, resampling 44.1 to 48, a limiter that is always on, a hidden software volume: each costs more than the difference between 16/44.1 and 24/96. MP95’s bit-perfect path avoids all of them and shows you when it has.
Frequently asked questions
Do I need a DAC for hi-res?
Phone headphone outputs and Bluetooth usually run at 48 kHz. To hear hi-res at its own rate, use a USB DAC.