Credits: Simple Home Cinema

The WiiM Amp Pro, reviewed here at $379 (AU$699) represents an evolution of affordable Hi-Fi solutions, blending compact size, excellent streaming capabilities, and capable amplification into a package designed for everyday music enthusiasts. But with a crowded market that includes options like the Bluesound Powernode Edge ($649) and legacy amplifiers from brands like Yamaha at higher price points, can the WiiM Amp Pro rise above its competitors?

In this in-depth review, we’ll evaluate its design, technical performance, connectivity, and sound quality, while comparing it directly to the WiiM Ultra Streaming Processor we also just reviewed. Scores for each category are provided alongside reasoning, ending up with an overall score out of 100.

Packaging: A Premium Touch at an Affordable Price

In a world where budget products often arrive in uninspired and utilitarian packaging, the WiiM Amp Pro earns instant points by delivering a surprisingly premium unboxing experience. From the moment the box is opened, it’s clear that WiiM has gone above and beyond to create a first impression that matches their claims of quality and sophistication.

All components are neatly organized, with dedicated, labeled compartments for the different cables, remote, and the Amp Pro itself. Everything about the packaging feels thoughtful and demonstrates how WiiM values the user experience from the very start.

Design and Build Quality: Surprisingly Premium for the Price

The WiiM Amp Pro is housed in a sleek aluminum shell, offering a compact and modern aesthetic that belies its modest $299 price tag. Measuring just 63 x 190 x 190mm, the unit can easily fit into a bookshelf, desk, or media console without dominating the space. It’s offered in clean silver and space gray finishes, giving it a polished and professional look.

Build Strengths:

• Unlike the WiiM Ultra, the Amp Pro features a more tactile feel. Its rotary dial for volume and playback control is larger and easier to interact with, although it doesn’t match the fluidity of more premium competitors like the Yamaha WXA-50, but it gets close.
• Thoughtful thermal design, including a custom heatsink, ensures solid heat dissipation for long-term use, even at higher volumes.

Yet, some compromises remind us of its budget positioning:

• The Amp Pro lacks a display or touchscreen, which some users may find limiting for standalone operation.
• The volume is monitored using LEDs, a practical solution that feels functional, though lacking the elegance of on-unit displays offered by some rivals. A nice touch is that the LEDs do offer different light levels for a more accurate volume display.

For users pairing this amplifier with a TV, discreet speakers, or streaming sources, its design blends perfectly into most setups.

Score: 9/10

The Amp Pro scores high for its minimalist aluminum construction and practicality. We would like a display but considering the price and built-in amplification, this is probably not a huge deal.

Technical Performance: Impressive, with Room to Push Higher

The Amp Pro punches above its price class when it comes to technical specifications. Powered by a TI TPA3255 Class D amplifier and an ESS Sabre ES9038 DAC, it boasts the pedigree of much pricier equipment, such as standalone DACs used in $1,000+ rigs.

Power and Amplification:

The Amp Pro outputs 60W/channel at 8 ohms and 120W/channel at 4 ohms. These figures make it capable of driving most entry-level bookshelf speakers or moderately sensitive floor-standing options. During testing, it showed no compatibility concerns with harder-to-drive speakers. That said, the amp can start to clip slightly when pushed at higher volumes with demanding speakers, hence efficient speakers are recommended.

Audio Fidelity – as confirmed by Audio Science Review:

1. Sound Clarity: The Amp Pro’s Total Harmonic Distortion + Noise (THD+N) is rated at -105 dB (0.0005%), keeping distortion imperceptible during most playback scenarios.
2. Signal-to-Noise Ratio (SNR): A high 103 dB SNR at 5W (116dB at full power!!!) guarantees a quiet listening experience, with virtually no audible noise floor.
3. Dynamic Range: Excellent dynamic range, as long as it is paired with efficient speakers, otherwise it might lack micro-dynamic details commonly expected from high-end amplifiers. Audiophiles may notice this if comparing directly with higher-end products with more power.

How It Compares to the WiiM Ultra:
The WiiM Ultra’s THD+N of -116 dB and superior DAC signal path make it the better option for precise Hi-Fi listening when paired with an external amplifier. However, the Amp Pro’s integrated amplification adds convenience and all-in-one value that resonates with budget-conscious users.

Score: 9/10

The Amp Pro delivers exceptional performance for the price, falling just slightly shy in total sonic clarity and power output for demanding setups.

Connectivity: Setting the Standard for Streaming Amps

The Amp Pro’s comprehensive connectivity suite redefines expectations in the budget amplifier space. It supports a broad mix of digital and analog inputs:

• HDMI ARC, perfect for seamless TV audio integration.
• Optical, line-in, and USB inputs allow for wired versatility.
• Outputs for Subwoofers and Banana connectors (x2) provide flexibility when pairing with passive speakers or bass reinforcement.

For wireless users, the Amp Pro supports Wi-Fi 6 and two-way Bluetooth 5.3, allowing both high-quality streaming and output to compatible wireless headphones. Notably, its integration with Spotify Connect, Tidal Connect, Chromecast, and DLNA ensures that virtually every mainstream streaming platform is accounted for.

Weak Spot: Like the WiiM Ultra, the Amp Pro lacks AirPlay 2 and grouping with Apple HomePods, which limits its appeal in Apple-centric ecosystems. This omission is a minor downside in an otherwise stellar connectivity suite.

How It Compares to the WiiM Ultra Steaming Processor:

The Ultra is somewhat more well-rounded with regards to its inputs with a high emphasis on better DAC fidelity. However, the Amp Pro’s HDMI ARC capabilities and amplification outputs make it a simpler physical integration for TVs, subwoofers, or passive speakers.

Score: 9.5/10

With HDMI ARC support, robust multi-room capabilities, and excellent streaming platform inclusions, the Amp Pro is nearly perfect in terms of connectivity. The only notable concern is the limited analogue connectivity. There’s only one set of line-ins which might limit its use in certain scenarios.

Sound Performance: Fun and Versatile

The Amp Pro’s sound is warm, lively, and forward, which works beautifully for genres such as pop, electronic, and jazz. It’s notably engaging and dynamic when paired with high-efficiency speakers.

Strengths:

• Bass Response: Punchy and controlled, particularly when paired with its subwoofer output option.
• Smooth Midrange: Vocals are warm and expressive, standing out in quieter tracks.

Yet, critical listeners may find some shortcomings:

• Transparency: Some high-end tracks lack the micro-detail glimpsed in higher-end systems like the Yamaha WXA-50.
• Dynamic Range: While energetic, the Amp Pro will compress sonic peaks, especially in orchestral or classical works, when paired with lower-efficiency speakers. This is why speaker-pairing is critical for best sound quality.

EQ Tuning : Its graphic and parametric EQ tools are flexible, and allows users to correct imperfections introduced by the room to optimize sound for their specific setups, giving budget users far more control than most amps in this price range.

It even comes with an auto-tune feature which seems to be very well implemented. However, it doesn’t seem to correct the higher octaves, which might need manual tuning instead.

One very welcome feature is the ability to re-measure the system with the EQ in place to see the real-world response after equalisation. Even mid-range room correction solutions such as Audyssey or Dirac don’t do this, they simply estimate the end response.

How It Compares to the WiiM Ultra:

The Ultra’s better DAC output slightly betters the Amp Pro for Hi-Fi purists. Additionally, the Ultra has better connectivity, especially in the analogue department.

However, the Amp Pro’s excellent technical measurements and integrated amplification provide better all-in-one sound versatility, and a cleaner setup.

Score: 8.5/10

While highly enjoyable, the Amp Pro doesn’t quite reach the power and fidelity of higher-priced models, though it comes very close when paired with the right speakers.

Value: The Clear Winner in Its Class

Keywords: Best budget amplifier, affordable wireless amplifiers

At $379, the WiiM Amp Pro redefines affordability in audio, delivering features and sound comparable to amplifiers that cost twice as much. Competing options like the Bluesound Powernode Edge ($649) or Yamaha WXA-50 ($549) may offer additional clarity or power, but neither can match the Amp Pro’s blend of features, connectivity, and sound customization at this price point.

Score: 10/10
Unrivaled value—it’s one of the best sub-$400 Hi-Fi streaming amplifiers currently available.

Conclusion: Final Rating