I had one for a while.
They weight a ton and are VERY head heavy...almost impossible to play live w/o killing yourself.
The neck inserts shrink over time and then neck feels funky when they do.
The stock Kramer pickups are funky...there was a single coil version and a bucker version, both are odd...the buckers sound better IMHO but not by a lot.
The bridges are pretty cheep and not much else will fit them and still cover all the holes but the tuners were tops (Schaller).
They also have no truss rod so if the neck is warped or if it ever warps you have to send to a guy with a Kramer neck press to get it straightened back out...there is only one guy with a press left in the world...just so you know...
Also worth mentioning the neck joint has to be the worst design in guitar history...the neck connects with 2 small allen head machine screws and on 95% of the alumnium neck Kramers I've seen, played and used the neck pockets are cut rather sloppyt and too big and with only 2 screws in neck they shift back and fourth all the time...you have to shim up the neck pocket if you really want to use them.
To give you an idea how far off the neck pockets tend to be, in the one I owned I used a dime in EACH SIDE of the neck pocket to get it to sit correctly.
Past all these niggles they are nect guitars, everybody that sees one is amazed by how cool the look...
Also worth knowing...the fretboards are made from a materal Kramer called Ebonal...it's more or less the same crap bowling balls are made from...it's VERY hard and VERY brittle...fret jobs often result in lots and lots of nicks in the fingerboard and most techs charge a LOT extra to refret an aluminum neck Kramer.
As for the sound they are loud and freaky sounding to say the least.
As for value, I bought mine for $275, did a LOT of work to make it play and sound better and sodl it a few years later for $250...