Overview

WiiM Amp Pro (2024) is a compact all-in-one streaming amplifier that integrates TI’s TPA3255 power stage, an ESS ES9038Q2M DAC, Wi-Fi 6E, Bluetooth 5.3, HDMI ARC, sub out, and app-based room correction. The aluminum chassis measures 8.54” × 7.48” × 2.60” (217 × 190 × 66 mm). [2][4][5]

Scientific Validity

\[\Large \text{0.8}\]

Independent community measurements report roughly ~100 dB SINAD around 5 W, with distortion rising at very high frequencies and near full power yet remaining transparent in normal use. [1]
Manufacturer specifications list SNR 120 dB (A-weighted) and THD+N -105 dB (0.0005%) @ 5 W, plus PFFB and room correction. These specs exceed common transparency thresholds but are treated as manufacturer data. [2]

Technology Level

\[\Large \text{0.7}\]

Modern wireless (Wi-Fi 6E, BT 5.3), HDMI ARC, in-app room correction, and a PFFB implementation on a TPA3255 platform constitute a current, practical design using proven silicon rather than proprietary architectures. [2][5]

Cost-Performance

\[\Large \text{1.0}\]

Current market price: 379 USD. [3][10]

We sought the cheapest product with equal-or-better user-facing functions (HDMI ARC, integrated streaming with multi-room, app EQ/room correction) and comparable transparent measured performance (~100 dB SINAD class). As of 2025-09-01, none cheaper than the review target was found:

• Bluesound Powernode Edge (streaming amp with HDMI eARC): 649 USD MSRP. Not cheaper. [7]
• Sonos Amp (streaming amp with HDMI ARC): 699 USD. Not cheaper. [8]

We also checked entry AVRs that include eARC + integrated streaming + room correction (e.g., Denon AVR-S660H; general retail often 339-499 USD), but independent transparency data at the ~100 dB SINAD level is not established, so they do not qualify as “not inferior” in measured performance for this comparison. [11][12]

Therefore CP remains 1.0.

Reliability & Support

\[\Large \text{0.6}\]

Warranty coverage via an official Canadian distributor shows 1-year as typical; policies vary by region/retailer. Firmware activity and an active community are positives, but long-term failure statistics for this model are limited. Score anchored at average (0.5) with +0.1 for simple, low-wear Class-D design. [9][5]

Rationality of Design Philosophy

\[\Large \text{1.0}\]

Design choices target audible transparency and practicality: PFFB to reduce load interaction, software EQ/room correction, and comprehensive streaming/ARC integration in one box. This is a measurement-first, user-centric approach. [2][5]

Advice

If you want a tidy, single-box solution to power passive speakers with modern streaming, HDMI ARC, and room correction, Amp Pro is an easy recommendation at 379 USD. Alternatives with the same feature scope are significantly pricier and do not offer clearly superior measured transparency. [3][7][8]

References

[1] Audio Science Review forum thread, “WiiM Amp Pro Streaming Stereo Amplifier Review.” Accessed 2025-09-01. https://www.audiosciencereview.com/forum/index.php?threads/wiim-amp-pro-streaming-stereo-amplifier-review.57257/
[2] WiiM Help Center, “Technical Specification of the WiiM Amp and WiiM Amp Pro” (updated 2025-04-30). Accessed 2025-09-01. https://faq.wiimhome.com/en/support/solutions/articles/72000616467-technical-specification-of-the-wiim-amp-and-wiim-amp-pro
[3] WiiM official shop listing. Accessed 2025-09-01. https://wiimhome.com/shop
[4] Amazon US, “WiiM Amp Pro” (dimensions and headline specs). Accessed 2025-09-01. https://www.amazon.com/WiiM-Amp-Pro-Multiroom-Compatible/dp/B0DFPJ91ZX
[5] WiiM Forum, “Introducing WiiM Amp Pro.” Accessed 2025-09-01. https://forum.wiimhome.com/threads/introducing-wiim-amp-pro.4868/
[6] WIRED, “Review: WiiM Amp Pro.” Accessed 2025-09-01. https://www.wired.com/review/wiim-amp-pro
[7] Bluesound (official), press release “Bluesound Announces the POWERNODE EDGE” (MSRP 649 USD). Accessed 2025-09-01. https://www.bluesound.com/usa/news/bluesound-announces-the-powernode-edge
[8] Sonos (official), “Amp.” Accessed 2025-09-01. https://www.sonos.com/en-us/shop/amp
[9] Gentec International (official CA distributor), “WiiM – Canadian Warranty.” Accessed 2025-09-01. https://www.gentec-intl.com/pages/service/wii-m-canadian-warranty
[10] Crutchfield, “WiiM Amp Pro” (price shown 379 USD; features). Accessed 2025-09-01. https://www.crutchfield.com/p_399WAMPPRO/WiiM-Amp-Pro.html
[11] Crutchfield, “Denon AVR-S660H” (Audyssey MultEQ, eARC, HEOS). Accessed 2025-09-01. https://www.crutchfield.com/p_033AVS660H/Denon-AVR-S660H.html
[12] Safe & Sound HQ, “Denon AVR-S660H” (sale pricing example). Accessed 2025-09-01. https://www.safeandsoundhq.com/products/denon-avr-s660h-5-2-channel-a-v-receiver-with-wi-fi-bluetooth-apple-airplay-2-and-amazon-alexa

(2025.9.1)