DBX 2031 Single Channel 31-Band Equalizer/Limiter with Type III Noise Reduction. Single-channel, 31-band, 1/3-octave equalizer. The PeakPlus limiter's threshold ranges from 0dBu to +20dBu and can transparently tame the wildest hits or subtlest nuances of any signal. The 4 segment LED bar graph for both gain reduction and output level offers the most comprehensive visual feedback available. Also includes status LEDs for all settings on the front panel. XLR, barrier strip, and 1/4" connectors; 45mm nylon sliders; and 12dB input gain stage provide pro flexibility and performance. dbx 2031 Single Channel 31-Band Equalizer/Limiter Features: Single-channel 31-bands 1/3-octave per band PeakPlus limiter LED bar graph for gain reduction and output level Status LEDs for all settings on the front panel XLR, barrier strip, and 1/4" connectors 45mm nylon sliders 12dB input gain stage I have a couple of these for sale. The normal rack rash but that's all. These sell for $399 at Musicians Freind. $200 + shipping and fees( Paypal)