It sounds "finished" right out of the box. Many synths require external processing to get that thick, clean low end; Serum does it natively.
While Serum is already feature-packed, this version focuses on refining the user experience and ensuring compatibility with the latest DAWs and operating systems: Xfer Records – Serum v1.36b3 SAL, VSTi, VSTi3, ...
The ability to import your own audio files and turn them into wavetables means you will never run out of unique sounds. Conclusion It sounds "finished" right out of the box