Sony STR-DN1060 Parts And Controls page 151

You can use the following parameters to adjust the tonal quality (bass/treble level) of the
front, center, surround/surround back and front high speakers.
Level (dB)
Frequency (Hz)
Bass
Treble
1. Select [Setup] - [Speaker Settings] from the home menu.
2. Select [Equalizer].
3. Select [Front], [Center], [Surround] or [Front High].
4. Select [Bass] or [Treble].
5. Adjust the gain.
Note
This function does not work in the following cases:
[Analog Direct] is being used.
[Pure Direct] is set to [On].
[Bluetooth Mode] is set to [Transmitter].
Frequencies for [Bass] and [Treble] are fixed.
Depending on the audio format, the receiver may play signals at a lower sampling
frequency than the original sampling frequency of the input signals.
Only [Bass] gain and [Treble] gain are available for [Front] when headphones are
connected.
Hint
You can also select [Equalizer] in [Sound Effects] from the home menu.
[151] Adjusting Settings
Lifting up the sound of the center speaker (Center
Speaker Lift Up)
Speaker Settings