When I ordered the PJB Double Four Plus, I didn't know what to expect. The moment I unpacked it and plugged my bass into it for the first time, I was absolutely thrilled. At first glance, I was captivated by the beautiful, functional and minimalist design. I was also surprised by its actual size. It is really small, but at the same time very powerful. The controls have everything you need and is simple and intuitive. The sound is very balanced in all spectra, the combo has incredible bass frequencies for its size and even with high amplification, the sound is not distorted. What I like about the Double Four is that it faithfully interprets the real sound of the bass guitar. It does not color it in any way. A big advantage is the ability to operate on a power bank and I am extremely excited about the ability to connect a phone via Bluetooth. If you are looking for a really small bass combo with great power, high-quality sound, good functionality and do not want to make any compromises, I definitely recommend the PJB Double Four Plus.