1 helps to adjust the tone and volume of your guitar. 2 less time tweaking controls and more time playing. 3 bass, middle, treble and volume control. 4 Wide frequency range from 20 HZ to 20 kHZ. 5 With battery check indicator. 6 This equalizer helps to adjust the tone and volume of your guitar. You can adjust bass, middle, treble and volume. 7 You can spend less time tweaking controls and more time playing. 8 When it is in low power, the battery check indicator will light. 9 Powered by 9V Alkaline battery (not included).

What's in the box
1 x Acoustic Guitar EQ Preamp