This is the original Yamaha NE-1 Paramatric EQ designed for/by Nathan East. I found it easy to use in "bad rooms" to eliminate boominess. It sounds fine, but at this stage of the game, the less I have to carry, the better. I used it fewer than ten times and always kept it in its original packaging, except for those gigs. With original owners manual and box. The outer box shows some wear, but the device itself (and its inner box and manual) are in mint condition. I'll pay the shipping within the lower 48 US States.