10 Best Wifi Amplifier For Speakers 2025 in the United States

The Onkyo TX-RZ30 is a powerful 9.2-channel AV receiver designed to deliver high-quality sound amplification for home speakers. It stands out with excellent audio quality, thanks to its ultra-wide bandwidth amplifier that captures deep lows and clear highs, offering an immersive listening experience. The included Dirac Live room correction technology helps tailor sound perfectly to your room, which is great if you want balanced audio without needing expert adjustments. It supports popular audio formats like Dolby Atmos and works with Sonos systems for wireless multi-room setups, making it a strong choice if you want to connect several rooms or speakers easily.

Onkyo’s collaboration with Klipsch ensures smooth integration if you use those speakers, enhancing compatibility. Connectivity is versatile, with Bluetooth streaming and multiple HDMI ports, so it can handle various devices and sources. However, the TX-RZ30 is a sizable unit and might be complex for users unfamiliar with AV receivers. While it supports wireless streaming through Sonos, it doesn’t have native Wi-Fi amplification for every speaker brand, which could limit use if you want a simple one-brand ecosystem.

Its price and feature set lean toward home theater enthusiasts, so it may be more advanced than needed for basic audio boosting. If you want a robust, customizable amplifier for a high-end home audio setup with multi-room options, this Onkyo is a solid pick. But if you’re after a straightforward, plug-and-play wifi amplifier just for speakers without much setup, you might find it overwhelming.

The WiiM Amp is a versatile multiroom streaming amplifier designed to transform your passive speakers into smart audio devices. Its compact size belies its power, offering 60 Watts per channel at 8 ohms and 120 Watts per channel at 4 ohms, making it suitable for various speaker types, including floor-standing and outdoor speakers. The audio quality is high, supporting up to 24-bit/192 kHz streaming from popular music services like Spotify and Amazon Music. Additionally, it provides advanced room correction and independent EQ settings for personalized sound tuning.

The WiiM Home App facilitates easy control, allowing you to stream music, adjust volume, sync speakers, and more from your smartphone. It also supports voice control with Alexa, Google Assistant, and Siri, adding convenience for hands-free operation. The HDMI ARC port enables a simplified home theater setup, delivering immersive stereo sound and the option to add a powered subwoofer for enhanced bass.

Multi-room support is robust, enabling seamless integration with existing AirPlay 2 speakers, Amazon Echo, Google Home, and other WiiM devices, making it ideal for filling your home with synchronized audio. In terms of connectivity, it offers numerous options including HDMI, which enhances its versatility. The WiiM Amp's compact design may not appeal to users looking for a more traditional, high-power amplifier form factor. Nevertheless, for those seeking a powerful yet compact WiFi amplifier with multi-room audio capabilities, the WiiM Amp presents a compelling option.

The Sonos Amp is a versatile Wi-Fi amplifier designed to power all your entertainment needs. It is highly compatible with various devices, including turntables, wired speakers, and TVs, making it ideal for users with diverse audio sources. The audio quality is impressive, boasting direct digital input for crisp, undistorted sound, which is perfect for music streaming and TV audio.

Additionally, it supports multi-room audio, allowing you to expand your Sonos system throughout your home, including outdoor spaces, through its compatibility with Sonos Architectural by Sonance speakers. However, it is worth noting that the amp is relatively heavy at 2.1 kilograms and may require careful placement due to its size. The design is practical, fitting standard racks and wall mounts, and features an optimized heatsink for effective heat management.

Connectivity options are robust, with support for Wi-Fi, Ethernet, and HDMI, ensuring seamless integration with your existing home network and devices. The Sonos Amp is controlled via iOS and Android apps, making it convenient to use. While it is not the cheapest option on the market, its performance and versatility make it a strong contender for those looking to enhance their home audio experience.