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About the DO300 EX
The SMSL DO300 EX (also styled DO300EX) is a desktop balanced DAC, preamplifier, and headphone amplifier. It uses AKM’s two-chip flagship conversion platform—an AK4191 digital delta-sigma modulator/filter paired with an AK4499EX DAC—along with a 3rd-generation 16-core XMOS XU316 USB interface. It accepts USB, optical, coaxial, I²S-over-HDMI, and Bluetooth sources; provides balanced XLR and single-ended RCA line outputs; and includes 4.4 mm balanced and 6.35 mm single-ended headphone outputs. Features include MQA/MQA-CD decoding, an IPS color display, remote control, programmable DAC/filter options, a second PLL/CK-03 clock-processing system for SPDIF jitter reduction, and Hi-Res Audio certification. It is a DAC/headphone-amp product rather than a standalone power amplifier, so speaker sensitivity, speaker impedance, amplifier damping factor, and speaker power-handling ratings do not apply.
Specifications
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