SMSL D400 Pro Review: Ranked #10 of 30

Last updated: October 11, 2026

The SMSL D400 Pro ranks #10 out of 30 total DACs for sound quality. See all Headphone Amps and DACs rankings for every top pick.

Brand: SMSL

Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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SMSL D400 Pro - ranked #10 of 30 DACs · Editor's rating 4.8/5
Check price at HiFiGo ($728.20) →

#10 SMSL D400 Pro: $728.20 HiFiGo eBay

Pros: Audio Science Review measured 122 dB SINAD, so its noise and distortion are inaudible. It has a wide range of inputs, including USB, optical, coaxial, I2S, AES and Bluetooth with LDAC, aptX HD, aptX, AAC and SBC, and outputs to amps or powered speakers over RCA or balanced XLR.

Cons: It is a DAC only, so you need a separate headphone amp or powered speakers. The Topping D70 Pro SABRE earns the same rating and measured slightly cleaner for less, and the SMSL DO200 Pro matches its SINAD for much less. No volume control is listed, so it may not work as a preamp for active speakers.

Balanced OutputYes (XLR line out)
Bluetooth CodecsSBC, AAC, aptX, aptX HD, LDAC
DAC ChipAK4499EX + AK4191EQ
Device TypeDAC
Dimensions10” x 1.8” x 7.4” (254 x 46 x 189 mm)
InputsUSB, optical, coaxial, I2S, AES, Bluetooth
OutputsRCA, XLR
SINAD122 dB (measured by Audio Science Review)
Weight4.2 lbs (1.9 kg)
Check current price at HiFiGo ($728.20) →Search eBay for SMSL D400 Pro →

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