Guitar Effects Stompbox with Built In Noise Gate. Metal Core Deluxe is a digital distortion pedal that offers you ultimate metal guitar tone! The new algorithm with NUX original TSAC Technology nails the tone from extremely hard pushed tube amplifiers. With its two metal voices and sensitive EQ, you are able to get the tone for old school metal or modern metal with tight low end. Its built in Noise Reduction keeps the pedal quiet even at very high gain setting. Features: Two Voices of Metal Distortion - 2 Band Equalizer - Built In Noise Reduction - Upgraded Hardware for Ultra Low Noise - 32bit DSP, Hi Performance 24bit 44.1kHz AD/DA Converter - Tone Lock Function to Freeze Settings and Save One Preset - True Bypass - Powered by 9V Battery or Optional 9V Adaptor with Negative Tip - USB for firmware update- Color: Black.