SMSL D400 ProFrom real comments

Verdict distilled from 19 mentions across 10 aspects in comments under product review videos.

Positive sentiment65%
PROS 65%
CONS 35%

Rank based on 19 mentions across 10 aspects

View the verdict as

Buy this if...

  • You want a detailed, deep-soundstage DAC that beats the D70 Pro Octo and Sabre in inner-voice clarity
  • You value a dedicated analog/digital power supply and DSD Bypass/NOS performance
  • You're comparing against pricier Topping DACs and want better value

What users love

Skip this if...

  • You need it readily available - it's already discontinued and hard to find
  • You want genuine innovation rather than another mid-range SMSL DAC
  • You're confused by the overlapping D400/D400 ES/D400 EX lineup and want a clearer choice

What users complain about

Compare in seconds

Based on user comments

Best choice
1Premium
SMSL VMV D2
Natural, non-fatiguing soundMQA and AK4499 chip appealClear upgrade over harsher rivalsUncertain heat outputHigh priceNo sharper sound signature option
SMSL VMV D2
Natural, non-fatiguing sound
MQA and AK4499 chip appeal
Clear upgrade over harsher rivals
Uncertain heat output
High price
No sharper sound signature option
2Premium
SMSL H400
Strong power deliveryReliable alternative to competitorsSound-tuning flexibilityCosts more than cheaper alternativesHigh price
SMSL H400
Strong power delivery
Reliable alternative to competitors
Sound-tuning flexibility
Costs more than cheaper alternatives
High price
3
HiFiMan Goldenwave GA10
Fully Balanced ArchitecturePremium, Understated BuildRich Tube Sound
HiFiMan Goldenwave GA10
Fully Balanced Architecture
Premium, Understated Build
Rich Tube Sound
4Premium
iFi iCAN
Drives almost any headphoneUnique xBass and 3D tuning controlsMusical, layered, engaging soundHigh price questionedOverdamped decay / odd dynamics reportedCannot switch preamp and headphone outputs independently
iFi iCAN
Drives almost any headphone
Unique xBass and 3D tuning controls
Musical, layered, engaging sound
High price questioned
Overdamped decay / odd dynamics reported
Cannot switch preamp and headphone outputs independently
5Budget
SMSL VMV SAP1
Excellent value for moneyDrives demanding headphones with easeExceeds initial expectationsInconsistent regional pricingCheap-feeling volume knobLimited availability at some retailers
SMSL VMV SAP1
Excellent value for money
Drives demanding headphones with ease
Exceeds initial expectations
Inconsistent regional pricing
Cheap-feeling volume knob
Limited availability at some retailers
6Premium
iFi Pro iCAN
Extremely versatile tuning options
iFi Pro iCAN
Extremely versatile tuning options
7Mid
Monoprice Monolith THX AAA 887
Balanced XLR ConnectivitySought for Driving Hard-to-Drive HeadphonesSolid Metal Volume Knob
Monoprice Monolith THX AAA 887
Balanced XLR Connectivity
Sought for Driving Hard-to-Drive Headphones
Solid Metal Volume Knob
8Mid
Creative Sound Blaster E3
Strong Value on SaleGaming Software FeaturesImproved Dynamic RangeFull Price Feels HighUncertain Value vs E5
Creative Sound Blaster E3
Strong Value on Sale
Gaming Software Features
Improved Dynamic Range
Full Price Feels High
Uncertain Value vs E5
9Budget
SMSL RAW-HA1
Strong speaker amp performance
SMSL RAW-HA1
Strong speaker amp performance
10Mid
iFi Hip-DAC
Detailed, engaging sound
iFi Hip-DAC
Detailed, engaging sound
Best valueYou are here
31Mid
SMSL D400 Pro
Attractive design and buildOwner satisfaction and NOS mode performanceDetailed, layered sound vs rivalsConfusing overlapping product lineupDiscontinued and hard to findMissing HDMI ARC input
SMSL D400 Pro
Attractive design and build
Owner satisfaction and NOS mode performance
Detailed, layered sound vs rivals
Confusing overlapping product lineup
Discontinued and hard to find
Missing HDMI ARC input

Who wins on what

Ranked by what users actually praise

Overall Impression

Sound quality draws strong, detailed praise from side-by-side comparisons. One long-term owner who compared it to the D70 Pro Octo over three months found the D400 Pro darker and thicker, but clearer on inner voices and orchestral detail where the Octo 'mushed together.' Another user directly preferred it over the D70 Octo for detail and directness, calling the Octo 'laid back.' DSD Bypass mode was described as creating a realistic, immersive tonality, and NOS mode was called 'insanely good' by a main-system user.

Build, power supply, and price-to-performance stand out as strengths. Commenters noted the separate analog and digital power supplies as a standout design feature, and one reviewer's audience pointed out the power supply quality matters more than chip specs for musical 'weight.' Buyers found the silver design more appealing than the SU-9 Ultra's 'cheap box' look. Price comparisons were favorable too, with one user choosing the ~$370 D400 over a $600 Topping D7 Pro Octo, and multiple owners reporting no regrets after purchase.

Availability and product-line confusion are the clearest drawbacks. Multiple commenters reported the D400 Pro is now discontinued and difficult to find at major retailers, with one resorting to a different SMSL model instead and another lamenting SMSL 'doesn't seem to keep products around very long.' A separate critic argued SMSL keeps releasing mid-range DACs without substantial innovation, missing features like HDMI ARC, tone controls, or room correction. The lineup is also muddled by overlapping D400, D400 ES, and D400 EX variants that commenters had to clarify for each other.

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