Make audio sound good

sudo rpm-ostree install easyeffects
systemctl reboot

Effect configuration json

{
    "output": {
        "bass_enhancer#0": {
            "amount": 0.0,
            "blend": 0.0,
            "bypass": false,
            "floor": 20.0,
            "floor-active": false,
            "harmonics": 4.0,
            "input-gain": 0.0,
            "output-gain": 0.0,
            "scope": 100.0
        },
        "blocklist": [],
        "crystalizer#0": {
            "band0": {
                "bypass": false,
                "intensity": 14.0,
                "mute": false
            },
            "band1": {
                "bypass": false,
                "intensity": 13.0,
                "mute": false
            },
            "band10": {
                "bypass": false,
                "intensity": -6.0,
                "mute": false
            },
            "band11": {
                "bypass": false,
                "intensity": -8.0,
                "mute": false
            },
            "band12": {
                "bypass": false,
                "intensity": -10.0,
                "mute": false
            },
            "band2": {
                "bypass": false,
                "intensity": 12.0,
                "mute": false
            },
            "band3": {
                "bypass": false,
                "intensity": 10.0,
                "mute": false
            },
            "band4": {
                "bypass": false,
                "intensity": 7.0,
                "mute": false
            },
            "band5": {
                "bypass": false,
                "intensity": 6.0,
                "mute": false
            },
            "band6": {
                "bypass": false,
                "intensity": 4.0,
                "mute": false
            },
            "band7": {
                "bypass": false,
                "intensity": 2.0,
                "mute": false
            },
            "band8": {
                "bypass": false,
                "intensity": -1.0,
                "mute": false
            },
            "band9": {
                "bypass": false,
                "intensity": -4.0,
                "mute": false
            },
            "bypass": false,
            "input-gain": -1.8,
            "output-gain": -4.6
        },
        "equalizer#0": {
            "balance": 0.0,
            "bypass": false,
            "input-gain": 0.0,
            "left": {
                "band0": {
                    "frequency": 31.0,
                    "gain": 8.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band1": {
                    "frequency": 62.0,
                    "gain": 7.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band2": {
                    "frequency": 125.0,
                    "gain": 4.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band3": {
                    "frequency": 250.0,
                    "gain": -4.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band4": {
                    "frequency": 500.0,
                    "gain": -2.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band5": {
                    "frequency": 1000.0,
                    "gain": 1.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band6": {
                    "frequency": 2000.0,
                    "gain": 6.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band7": {
                    "frequency": 6000.0,
                    "gain": 7.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band8": {
                    "frequency": 8000.0,
                    "gain": 9.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band9": {
                    "frequency": 16000.0,
                    "gain": 9.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                }
            },
            "mode": "IIR",
            "num-bands": 10,
            "output-gain": 0.0,
            "pitch-left": 0.0,
            "pitch-right": 0.0,
            "right": {
                "band0": {
                    "frequency": 31.0,
                    "gain": 8.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band1": {
                    "frequency": 62.0,
                    "gain": 7.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band2": {
                    "frequency": 125.0,
                    "gain": 4.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band3": {
                    "frequency": 250.0,
                    "gain": -4.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band4": {
                    "frequency": 500.0,
                    "gain": -2.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band5": {
                    "frequency": 1000.0,
                    "gain": 1.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band6": {
                    "frequency": 2000.0,
                    "gain": 6.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band7": {
                    "frequency": 6000.0,
                    "gain": 7.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band8": {
                    "frequency": 8000.0,
                    "gain": 9.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                },
                "band9": {
                    "frequency": 16000.0,
                    "gain": 9.0,
                    "mode": "APO (DR)",
                    "mute": false,
                    "q": 4.360000133514404,
                    "slope": "x1",
                    "solo": false,
                    "type": "Bell",
                    "width": 4.0
                }
            },
            "split-channels": false
        },
        "plugins_order": [
            "crystalizer#0",
            "bass_enhancer#0",
            "equalizer#0",
            "stereo_tools#0"
        ],
        "stereo_tools#0": {
            "balance-in": 0.0,
            "balance-out": 0.0,
            "bypass": true,
            "delay": 0.0,
            "input-gain": 0.0,
            "middle-level": 0.0,
            "middle-panorama": 0.0,
            "mode": "LR > LR (Stereo Default)",
            "mutel": false,
            "muter": false,
            "output-gain": 0.0,
            "phasel": false,
            "phaser": false,
            "sc-level": 1.0,
            "side-balance": 0.0,
            "side-level": 4.0,
            "softclip": false,
            "stereo-base": 0.0,
            "stereo-phase": 0.0
        }
    }
}