Analog Obsession TREQ v2 is a sleek shelf equalizer that provides a low range of + -15 dB at 60 or 120 Hz in order to make your drums knock and your bass guitars to rumble. Control your lower range with a switchable 50 Hz high-pass filter. Add brightness and sound to your recordings with a wide band that offers + -15 dB at 8 kHz or 12 kHz – perfect for acoustic guitars and cymbals.