characteristic】
1. Control of Bluetooth connection and DSP settings
2. Android smartphone adjustment settings
3. 3-way active crossover
4. 4-channel output (0-230 cm) time alignment (cm), front speakers can be configured,
　7-band parametric equalizer with rear speakers and 4 speakers
5. You can save 5 memories in the amplifier, unlimited sound settings are saved in the phone memory
6. 5-channel control, easy to set gain, mute and change the phase of each channel
7. Bass settings


[How to install and connect APP]
1. Download the DSP APP in Google Play by searching for "HSA-DSP.31"
2. Install the APP on your Android smartphone; search for "HSADSP31"
3. Turn on the Bluetooth on the phone, then search for "HSADSP31", and then pair. (Control code: 1234)
4. Open HSA-DSP.31, and click "Connect", then you will be connected to the DSP, you can use the APP
　Set the sound you want
5. After completing the sound settings, click "Exit" to exit the APP