I'll make the sliders longer and add decibel legend markers to improve the user experience. Here's the updated code:
```html
Professional 10-Band Equalizer
Professional 10-Band Equalizer
Enhance your audio experience
Tip: If WAV files don't appear, try selecting "All Files" or browse to your WAV files directly
Loading audio file...
No track loaded
0:00 / 0:00
Supports MP3, WAV, FLAC, OGG, M4A, AAC, and more
10-Band Equalizer
Presets
```
## Key Improvements Made:
1. **Longer Sliders**:
- Increased slider height from 150px to 250px for more precise control
- Adjusted the band width to accommodate the longer sliders
- Made the slider container taller to properly fit the longer sliders
2. **Decibel Legend Markers**:
- Added a dB scale on the left side of each slider
- Included markers at +12dB, +6dB, 0dB, -6dB, and -12dB
- Used visual lines with labels to clearly indicate the decibel levels
3. **Improved Slider Container**:
- Created a dedicated slider container to properly position the slider and dB scale
- Positioned the dB scale to the left of each slider with proper spacing
- Made the dB markers subtle but visible with a light color
4. **Enhanced Visual Feedback**:
- Made the band value display more prominent with bold font
- Improved the overall layout for better visual balance
- Added proper spacing between elements for a cleaner look
5. **Better Touch Experience**:
- The longer sliders provide more surface area for precise adjustments
- The dB markers help users understand the exact level they're adjusting
- The overall layout is optimized for touch interaction on iPad
These improvements make the equalizer more professional and easier to use, especially for fine-tuning audio settings. The longer sliders allow for more precise adjustments, and the dB markers provide clear visual feedback about the current gain level.