Bluetooth speakers to really pump up the bass
The Willnorn Soundplus speaker is small at 142 x 53 x 43 and weights only 14.4 ounces. It has two 4W speakers and a passive subwoofer. It also has a mini SD card to play music directly from the speaker.
It does not have the bass range that the Archeer, Vava Voom, and Nekteck has. It cannot be paired with another speaker.