The RENA S2 is an easy solution for upgrading your existing system with next-generation audio streaming technologies. It provides a way to connect directly to your existing amplifier with the latest DAC and streaming technology. All this makes the RENA S2 the most affordable and future-proof way to step into the world of Electrocompaniet. This add-on solution is a start and can grow and expand in the direction you want. Add a wireless SIRA L1 subwoofer to upgrade your system with more punch or add TANA L1 or TANA L2 add-on speakers to replace your existing system (without cables!).