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SMSL SU9 ULTRA
AK4191 + AK4499EX DAC
Ultra-low THD+N of 0.00006% (-124dB)
Advanced AK4191 + AK4499EX D/A chips
Proprietary CK-03 jitter processing circuit
Versatile input options: USB, Optical, Coaxial
Built-in shielding and low-noise power processing
High-end gold-plated input/output interfaces
Fully fitted, high-transmittance display
The Future of Affordable
Welcome to the SMSL SU-9 Ultra MQA High-Performance DAC—a game changer in the hi-res audio landscape. This DAC leverages top-of-the-line D/A chips and Bluetooth technology to deliver audio clarity like no other.
Silencing the Noise
One of the standout specs for the SMSL SU-9 Ultra is its incredibly low THD+N value—a staggering 0.00006% or -124dB. What does that mean for you? Essentially, you get to enjoy your music the way it's supposed to be: crystal clear, and free from distortion or noise.
The Science Behind the Sound—AK4191 + AK4499EX
A New Generation of Chips
Crafted with an innovative blend of the AK4191 and AK4499EX D/A chips from Asahi Kasei Microdevices Corporation (AKM), the SMSL SU-9 Ultra is far more than just a music player. The AK4499EX chip is based on its world-class predecessor, the AK4499, but elevates the game with a complete separation of digital and analog circuitry.
When paired with the AK4191, the AK4499EX becomes a powerhouse for analog conversion. The duo handles ultra-high-resolution sound sources—up to an impressive 1536kHz sample rate for 64-bit PCM or a 44.8MHz sample rate for DSD. In layman's terms? You'll catch every nuanced note and subtle rhythm, clearer than ever, thanks to the low-jitter clock enabled by the AK4191's new "asynchronous operation mode."
Minimized Noise, Maximized Clarity
And it doesn't stop there. AKM's newly developed "DWA (Data Weighted Averaging) Routing Technology" takes noise suppression to the next level, offering world-class analog characteristics that even surpass those of its predecessor. The result is an exceptional signal-to-noise ratio, making your music sound cleaner and incredibly life-like.
The SU-9 Ultra comes with USB, Optical, and Coaxial inputs—each supporting DSD signal. Whether you're connecting it to a vintage CD player or a state-of-the-art computer, this DAC meets you where you are.
Built Like a Fortress
The SMSL SU-9 Ultra comes equipped with internal shielding and specialized low-noise power processing. These features work in harmony to provide a highly efficient operation while maintaining an impressively quiet sonic background.
Input：USB/Optical / Coaxial / Bluetooth
THD+N: 0.00006% (-124dB, un-wtd)
USB transmission: USB 2.0 Asynchronization
Windows 7 / 8 / 8.1 / 10 / 11 (Needs Driver)
Mac OSX10.6 or above
MQA decoder：USB / Optical / Coaxial
USB PCM: 44.1 ~768kHz (32bit)
DSD: 2.8224 ~22.5792MHz (1bit)
Optical/ Coaxial: 44.1 ~192kHz (24bit)
DoP: DoP256 (USB), DoP64 (Optical/ Coaxial)
Bluetooth Version: 5.0 (supports SBC, AAC, aptX, aptX HD, LDAC)
Power ConsumptionL: 10w
Standby power: ＜0.5w
Size: 187.5 x 154 x 40mm (WxHxD)