I reckon this sounds a but better than the newer NS-2, it's a bit more natural. Turn that single coil hum off for good and move on with your life.

Model: Boss NF-1 Noise Gate
Made: Japan, Feb 1985 (serial 515100)
Type: noise gate
Power: 12v AC vintage power supply (not included) or 9v battery (included) 
Switching: buffered bypass
Equivalent new street price (approx): n/a
Mods: velcro attached
Accessories: no box or manual
Condition notes: used, a few minor marks, fully functional. Overall: good condition