DDA20 portable amplifier best gift for boyfriends musicians Parent. Keyboard Electric Drum amp of solo pratice 【Bluetooth】You can use your phone or I pad to play background music for your workout. 【Two speakers】6.5-inch woofer shows the bass better 2-inch tweeter shows the treble well. 【Multipurpose amplifier】It can be connected to your electronic drum keyboard or another instrument 【Portable design】Small size and light weight. It can running to a family practice lesson or any situation. 【Wireless connection to mobile devices】Allows musicians connect their mobile devices wirelessly to the amplifier to practice and play along with their favourite bands/songs. 【Stunning Multimedia Controls】Equipped with high-frequency and low-frequency adjustment knobs the unimaginable range of adjustment allows you to adjust the tone you want