# 🔊 Why does my audio sound muddy or bass-heavy out of the box?

*Published: 2026-01-20 | Updated: 2026-01-20 | Source: https://shopsavvy.com/answers/why-does-my-audio-sound-muddy-or-bass-heavy-out-of-the-box*

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## Product: Bose QuietComfort Ultra Bluetooth Headphones (2nd Gen), Wireless Headphones with Sp...
**Brand:** Bose

The bass-heavy sound is intentional and commonly noted by reviewers—but it's easily corrected.

## Why It Sounds This Way

Bose uses "consumer-friendly" tuning designed for retail demos:

| Frequency Range | Tuning |
|-----------------|--------|
| Bass | **+3-6dB emphasis** (the issue) |
| Mids | Recessed |
| Treble | Bright |

This impresses during brief store demos but causes muddy, congested sound with vocal-heavy music, podcasts, and acoustic content.

## The Quick Fix

**Bose Music app** → **Settings** → **Sound** → **Equalizer**

| Adjustment | Setting |
|------------|---------|
| Bass | -2 to -3 dB |
| Mids | 0 or +1 dB |
| Treble | Neutral |

This simple change [transforms the sound](https://www.soundguys.com/bose-quietcomfort-ultra-headphones-2nd-gen-review-boring-refresh-or-notable-upgrade-144545/) from boomy to clear. Multiple reviewers describe it as "night and day."

## Also Check These

**Seal Quality:** Gaps between earcups and your head (common with glasses) affect bass response. Ensure full, even contact.

**CustomTune Calibration:** Remove and replace headphones to trigger fresh calibration—suboptimal calibration affects frequency balance.

**Immersive Audio:** Toggle off temporarily. Spatial processing can affect perceived bass on some content.

## 2nd Gen Improvement

The 2nd Gen has better tuning than the original:
- Improved midrange presence
- Less treble harshness (1st Gen had a peak around 8kHz)

However, the bass emphasis remains. Most users still benefit from EQ adjustment regardless of generation.

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*Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from ShopSavvy's price data (each price shows when it was last seen).*

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