---
title: gain
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudiouniteqfilterparameters/gain
---

# gain

The gain of the equalizer filter, in decibels.

## Declaration

```swift
var gain: Float { get set }
```

## Discussion

Discussion The default value is 0 dB. The valid range of values is -96 dB through 24 dB.

## See Also

### Getting and Setting Equalizer Filter Parameters

- [bandwidth](avfaudio/avaudiouniteqfilterparameters/bandwidth.md)
- [bypass](avfaudio/avaudiouniteqfilterparameters/bypass.md)
- [filterType](avfaudio/avaudiouniteqfilterparameters/filtertype.md)
- [frequency](avfaudio/avaudiouniteqfilterparameters/frequency.md)