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Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The S.M.S.L. SU-9 Pro is a cutting-edge balanced DAC designed for audiophiles seeking high fidelity and versatile connectivity. It uses an 8-channel ESS SABRE ES9039MPRO DAC chip combined with 11 OPA1612A op-amps, delivering an exceptional dynamic range of 134dB and ultra-low distortion (THD+N of 0.00005%). The DAC supports PCM up to 768kHz and DSD512 playback via USB, optical, and coaxial inputs, with native DSD and DoP support. It features a third-generation XMOS XU316 USB controller for true 32-bit USB audio processing. The SU-9 Pro includes Bluetooth 5.0 with support for LDAC, aptX HD, aptX, SBC, and AAC codecs, enabling wireless high-resolution streaming. The device has both RCA (2.5Vrms output, 128dB dynamic range) and balanced XLR outputs (5.2Vrms, 133dB dynamic range) for flexible connection to amplifiers or powered monitors. It incorporates advanced jitter reduction with a self-developed CK-03 clock processing circuit and multiple low-noise regulated power supplies with built-in shielding for ultra-low noise performance. The front panel features a 1.9-inch LCD screen with a tempered glass panel for durability and clarity, and the unit comes with a remote control for easy operation. Additional features include volume control modes (variable or fixed), adjustable digital PLL settings to optimize jitter tolerance, audio phase inversion, dimmer and brightness controls, and JAS Hi-Res certification. The SU-9 Pro is compact and lightweight, measuring 187.5 x 154 x 40 mm and weighing 0.79 kg, with a power consumption under 10W and standby power below 0.5W. It is supplied with a power cord, USB cable, Bluetooth antenna, remote control, and user manual.
DAC capabilities and digital audio processing
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Components that show up alongside the SU9 Pro in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The DO200 MKII's bit depth is 32-bit against the SU9 Pro's 24-bit and its signal-to-noise 128 dB against 134 dB. Both share max sample rate (768 kHz) and thd (0.000%).
The D90 SE's bit depth is 32-bit against the SU9 Pro's 24-bit. Both share max sample rate (768 kHz), signal-to-noise (134 dB), and thd (0.000%).
Both turn up in the same documented systems.
The DL400's bit depth is 32-bit against the SU9 Pro's 24-bit and its signal-to-noise 127 dB against 134 dB. Both share max sample rate (768 kHz) and thd (0.000%).
The DacMagic 200M's bit depth is 32-bit against the SU9 Pro's 24-bit, its signal-to-noise 115 dB against 134 dB, and its thd 0.001% against 0.000%. Both share max sample rate (768 kHz).
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