The Rotel RC-1590 is a reference preamplifier that can render analog and digital sources with natural expression and a wide, open sound stage. It has a frequency response of 20 Hz to 20 kHz, a signal to noise ratio of 108 dB, and an input sensitivity/impedance of 0 dBFs/75 ohms. It also has a preamplifier output level of 1.65 V at -20 dB and coaxial/optical digital signals that can handle SPDIF LPCM up to 24-bit/192 kHz
