87%
s.m.s.l AO300
DAC&Power Amp
New digital high power amplifier chip from Infineon, Germany, higher quality with high efficiency and low power consumption;
Using JRC’s electronic volume control chip NJW1194 from Japan, precise volume control and ultra-low distortion;
Support MQA decoding and MQA-CD ;
New 3rd generation XMOS XU-316, PCM support up to 32bit/768kHz, DSD support up to DSD256;
The latest Bluetooth supports LDAC，APTX/HD,SBC，AAC;
Use the latest audio decoding chip CS43131 by Cirrus Logic；
All Aluminum alloy CNC precision processing shell, anodizing technology and chamfering process, exquisite workmanship and delicate touch;
User-friendly operating system is simple and easy to understand, equipped with full-featured remote control function;
A large number of professional Hi-fi audio components are used to enhance the sound experience;
High-quality gold-plated input and output terminals;
Perfect protection circuit for overheating, overcurrent etc;
Built-in high-quality power supply, specially designed for audio.
Dealers selling s.m.s.l near you
s.m.s.l AO300 — compact power and clean transparency
The s.m.s.l AO300 pairs a modern Infineon MA5332MS Class D topology with measured performance that belies its size: extremely low distortion (0.003% at 32 Ohm) and a 107dB signal‑to‑noise ratio. That technical foundation delivers punchy dynamics and abundant headroom—rated at up to 165W per channel into 4Ω—so it drives small to medium speakers with ease. Review testing by Audiophilepure highlights the AO300's impressive power and transparency for its category. The chassis and component choice suggest a modern, no‑nonsense build focused on performance rather than bells and whistles. Ideal for listeners who want near‑class‑leading dynamics and clarity without stepping up to much pricier mid‑range amplifiers, the AO300 offers a compelling value proposition against more expensive rivals.
Pros
- Very low measured distortion and high signal‑to‑noise ratio for clean, transparent playback.
- Exceptional power delivery and dynamics for its class—165W/ch (4Ω) and robust headroom.
- Strong value: performance that competes with mid‑range amps costing two to three times as much.
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Cons
- Review does not detail inputs, outputs, or extra features—connectivity and feature set are unclear.
- Limited subjective commentary on imaging and soundstage in available reviews, leaving spatial performance less documented.
Sound Quality
88/100
Dynamics
90/100
The AO300 uses the Infineon MA5332MS Class D chip and is reported to deliver 165 W/ch at 4 ohm and 85 W/ch at 8 ohm, with the review calling it 'one of the most powerful speaker amplifiers available in this category.' Given the high power for a compact/Class D unit and no complaints about headroom, dynamics are judged excellent for its class.
Soundstage Imaging
85/100
The review provides no direct commentary on imaging or soundstaging; measured metrics imply clarity but there is insufficient subjective detail. Score reflects a neutral-to-positive expectation based on low distortion and good SNR, but cautious due to lack of explicit staging remarks.
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Build Quality
86/100
The review highlights the use of the new Infineon MA5332MS Class D chipset which implies modern component choice and capable power delivery. There are no detailed comments on chassis, transformers, or internal layout, so the score is slightly conservative but positive based on the robust power specification.
Features Connectivity
80/100
The review does not enumerate inputs/outputs or extras (phono, DAC, XLR, streaming, headphone outputs), only comparing it to other SMSL models; therefore a minimal-feature baseline is assumed. With no explicit feature list provided, the score remains at the baseline for a basic integrated/headphone amp.
Value for Money
90/100
Reviewer states the AO300 'battl(es) with mid-range amps like the Teac TN-303' that cost 2–3x more, implying strong value for performance. The language suggests the AO300 is a competitive, well-priced option relative to pricier peers.
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