JOYO Eq-504 4 Band Preamp Pickup Eq & Tuner For Guitar

The JOYO EQ-504 is a 4-band EQ pre-amp with built in tuning function. Just press the tuner button to turn on.

The EQ is a pre amp designed for use with Acoustic and classical guitars to amplify, control bass, middle, treble and presence tone. A phase control is also featured.

In the kit a piezo pick up is supplied to fit under the saddle with a battery & jack compartment to connect.

The built in Tuner has a Tuning Range of A0(27.50Hz) ~ 8C(4186.01Hz) at 44Hz

To fit the unit you will need to cut a hole that is slightly larger than the measurements of the unit.

We would advise that the holes are no larger than:

• 39.5mm x 66.5 mm for the main preamp 
• 26mm x 52mm for the battery / jack input

Specifications:

Function: JOYO EQ-504 4 Band EQ Equalizer

Feature:
- 4 Band EQ with digital tuning function for guitar, easy to install and use.
- Mini LCD screen to display, more accurate, high sensitive and wide tuning range.
- Powered by one 6F22 9V battery, low consumption and long lifespan.
- Comes with a low battery LED indicator.

Tuner:
- A4 Frequency: 440Hz
- Tolerance: + / - 1 cent
- Tuning Range: A0(27.50Hz) ~ 8C(4186.01Hz)

EQ:
Input Impedance: 10M Ohm
Adjustable Range:
- (Bass) +/- 12dB at 75Hz
- (Middle) +/- 12dB at 750Hz
- (Treble) +/- 12dB at 10KHz
- (Presence) +/- 12dB at 15KHz
Power Source: 1 x 6F22 9V Battery(Not Included)