Extend your speakers high frequency response to up to 60 K !!.  Yes, there IS life above 20 K.  In fact, lots of it !

Add considerable air and realism, with Tweet. the (probably) only valve amplifier friendly super tweeter available.  A tiny, naturally black enclosure makes it suitable for home cinema use as well as traditional 2 channel set-ups.  In the cinema Tweet can help restore the open sound stage that perforated screens can all but destroy.