The SMSL SU-2 is a compact desktop HiFi DAC that pairs the ES9039Q2M chip with OPA1612A op-amps and offers XLR and RCA outputs from a 532.6 g chassis. It suits listeners starting a desk stack who want a dedicated source for a headphone amp or active monitors that stays put as the system grows.
Who the SMSL SU-2 is for
Upgrading from motherboard or TV audio: It takes digital-to-analog conversion out of the computer or TV and puts it in a purpose-built box.
Desk stacks you plan to grow: Because it is a DAC rather than a DAC/amp combo, you can swap amps later and keep the source.
Active monitor setups: XLR and RCA outputs feed a pair of powered monitors for a complete desk system with a small footprint.
Skip it if: you want to plug headphones straight into it; it is a DAC, not a DAC/amp combo, so it needs a separate headphone amp or active monitors.
SMSL SU-2 key specs
DAC chip: ES9039Q2M
Output-stage op-amps: OPA1612A
Inputs: AES/EBU, optical, coaxial
Outputs: XLR, RCA
Weight: 532.6 g
In the box: SU-2, AC power cable, user manual
Genuine SMSL stock with 45-day returns.
SMSL SU-2 vs similar options
vs FiiO BTA30 Pro: A Bluetooth transceiver and USB DAC on an ES9038Q2M chip that receives and transmits LDAC, with RCA line out; pick the SU-2 if you need XLR outputs or an AES/EBU input.
vs SMSL SU-1: Entry model in SMSL's SU line, built on an AK4493S chip with an XMOS XU316 USB interface, MQA decoding and DSD512 support; choose the SU-2 if you want the ES9039Q2M chip with OPA1612A op-amps.
vs Douk Audio P1: Puts a tube preamp stage, a USB DAC and Bluetooth 5.0 in one box with a 3.5 mm headphone jack; pick the SU-2 for XLR outputs plus AES/EBU, optical and coaxial inputs.
Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.
Where does my order ship from, and how long does it take?
Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.
What if it isn't for me?
You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.
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