SMSL
SMSL SU-9 Pro
Last updated August 12, 2026
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A desktop DAC built around the flagship ES9039MPRO chip, with Bluetooth 5.0 LDAC and both RCA and XLR outputs.
Official product pageOverview
The SU-9 Pro is a desktop DAC using ES9039MPRO D/A chips across 8 channels with 11 OPA1612A op-amps, a 3rd-generation XMOS XU316 USB interface, and a self-developed CK-03 jitter processing circuit. It supports PCM up to 768kHz, DSD up to DSD512, and MQA decoding, plus built-in Bluetooth 5.0 with LDAC and aptX/HD for wireless sources, all housed in a CNC-milled aluminum shell with a tempered glass display.
Pros
- ES9039MPRO flagship DAC chip with a 3rd-gen XMOS XU316 USB interface
- Supports PCM up to 768kHz and DSD512, plus MQA decoding
- Built-in Bluetooth 5.0 with LDAC/aptX HD for wireless high-res streaming
- Both RCA and XLR balanced outputs (up to 134dB SNR on XLR)
Cons
- A DAC only — pair with a separate headphone amp, since no headphone output is listed in its specifications
- 7 working-day pre-order fulfillment window, non-cancellable and non-refundable
Specifications
- DAC Chip
- ES9039MPRO (8 channels, 11x OPA1612A op-amps)
- USB Interface
- 3rd-gen XMOS XU316
- Inputs
- USB, Optical, Coaxial, Bluetooth
- Outputs
- RCA, XLR
- Line Output (XLR)
- 5.2Vrms
- Line Output (RCA)
- 2.5Vrms
- THD+N
- 0.0005% (-125dB, unweighted)
- SNR
- 134dB (XLR), 128dB (RCA)
- USB Sampling
- 44.1-768kHz PCM; DSD 2.8224-22.5792MHz
- Dimensions
- 187.5 × 154 × 40mm
- Weight
- 0.79kg
FAQs
Does the SU-9 Pro have a headphone amp built in?
No — based on its listed specifications this is a DAC with RCA/XLR line outputs, not a DAC/amp combo, so it needs a separate headphone amplifier.
Does it support wireless sources?
Yes — it has built-in Bluetooth 5.0 with LDAC and aptX/aptX HD codec support.
What formats does it decode?
PCM up to 768kHz, DSD up to DSD512, and MQA, over USB.
