This is an Apos Certified product. That means it's refurbished, like new, eligible for our 45-day return policy, carries an Apos Certified One-Year Warranty, and ships from our US facility. Currently, Apos Certified products are only available to customers with a US shipping address. We appreciate your understanding as we aspire to expand our offerings to a broader audience in the future.

Cutting-edge desktop DAC

The SMSL SU-9 Pro MQA Desktop DAC pushes the desktop DAC game forward with a set of cutting-edge components like a brand-new ESS SABRE DAC chip, a third gen jitter elimination chip, and a third gen USB controller. Plus, a number of quality-of-life improvements like an updated UI and DOP display make this DAC as incredible to operate as listen to.

8-channel flagship SABRE chip

The SU-9 Pro uses an 8-channel ESS SABRE ES9039MPRO DAC chip with a total of 11 OPA-1612A op-amps. This setup boasts an incredible 134dB of dynamic range plus stereo MQA rendering built right in.

Third generation USB controller

With a third-generation XMOS XU316 USB controller, the SU-9 Pro offers a true 32-bit USB solution, with support for PCM 768kHz and DSD512.

Built-in shielding for ultra low-noise

Achieving the incredible noise performance of 0.00005% THD+N requires a staggering degree of brilliant engineering. The SU-9 uses speciality-designed discrete components, a linear regulated power supply, several low-noise regulated power supplies, and built-in shielding. The result is a pure black backdrop for your music to shine against.

HD Bluetooth 5.0

Use your phone, laptop, tablet, or computer to stream from anywhere in your place with Bluetooth 5.0. Enjoy HD codecs like LDAC and AptX HD that support audiophile-grade bit and sampling rates up to 24bit/96kHz.

Exquisitely-designed chassis

Precisely milled with aluminum alloy, the outer shell is both stately and strong. The sharp edges have been chamfered and the shell has been anodized for an altogether smooth finish.

Product highlights

• ESS SABRE ES9039MPRO D/A chip
• MQA & MQA-CD
• DSD512 and PCM 32-bit/768kHz
• Third gen XMOS XU-316 USB controller 
• Third gen jitter elimination chip
• Bluetooth 5.0 with LDAC and AptX HD
• Remote control
• CNC milled aluminum alloy shell
• Max SNR: 134dB
• Max THD+N: 0.00005%

Specs

• Inputs: USB, Optical, Coaxial, Bluetooth
• Outputs: RCA, XLR
• Line out amplitude
• XLR: 5.2Vrms
• RCA: 2.5Vrms
• THD+N: 0.00005% (-125dB)(UN-WTD)
• Dynamic range
• XLR: 134dB
• RCA: 128dB
• SNR
• XLR: 134dB
• RCA: 128dB
• USB spec: USB 2.0 asynchronization 
• USB compatibility: Windows 7/8/8.1/10 (needs driver), Mac OSX 10.06 or later, Linux (driverless)
• MQA decoder: USB, Optical, Coaxial
• MQA-CD decoder: Optical, Coaxial
• Sampling rate and bandwidth
• USB PCM: 44.1 - 768kHz (32bit)
• DSD: 2.8224 - 22.5792MHz (1bit)
• Optica/coaxial: 44.1 - 192kHz (24bit)
• DoP: DoP256 (USB), DoP64 (optical/coaxial)
• Bluetooth 5.0 codecs, sampling rate, and bandwidth
• LDAC: 24bit/96kHz (990kbps/660kbps/330kbps)
• aptX_HD: 24bit/48kHz_576kbps
• aptX: 16bit/44.1kHz_352kbps
• SBC: 16bit/44.1kHz_328kbps
• AAC: 16bit/44.1kHz_320kbps
• Power consumption: <10W
• Standby power: <0.5W
• Size: 7.3” x 6” x 1.57” (187.5 x 154 x 40mm)
• Weight: 1.74lbs (0.79kg)

What’s included

• SMSL SU-9
• Power cord
• USB cable
• Remote control
• Bluetooth antenna
• User manual