Finally dumped my SMS-1 for a Behringer 2496 DEQ.
The OSD did not concur with my listening tests.
Sometimes the amplitudes shown were 10dB or more off, a tiny bump was a significant one when lstening.
My advice: Always check your nice looking trace with a real life test, preferably with a sine generator, or with a plucked deep bass or church organ CD.
Only useful thing I found was the variable phasing and the extra volume setting.
Wrote to Velodyne about it twice, they never responded.
One of those sellers who prefer treating their customers like buzzing flies.