"Electricity births sound, " this is the practical experience summed up by the HIFI pioneers through their blood and tears. Stable and outstanding circuit design and power supply can bring about cleaner and higher-fidelity sound. Power management has long become an indispensable part of audio systems. To achieve a more compact design, portable dac/amp typically do not incorporate independent power designs but rely on the phone's Lightning or TYPE-C interface for power. When the current or voltage output of the front-end device is unstable or falls short of the small tail's operating voltage, the sound performance of the small tail can be disappointing.

Audirect's Beam4 takes a different approach by incorporating a 1200mAh battery and a proprietary power management system with a supplementary power source. This system intelligently allocates power to ensure stable current and voltage output, even when the front-end device's power delivery is unstable. As a result, the Beam4 delivers a sound profile characterized by solidity, purity, naturality, and pleasant listening experiences. Enhancements like the intelligent power compensation system in the Beam4 effectively address power output limitations associated with Lightning interfaces, enhancing the richness and dynamic performance of the sound. While the Beam4's mid-to-low frequency warmth may not match some premium players, its sophisticated sound quality surpasses many similar products.

When paired with Astell&Kern T9iE, the Beam4 excels in delivering accurate low-frequency responses, rich musical details, and commendable dynamics. Tracks like FLEETWOOD MAC's "THE CHAIN" showcase natural percussion and accompaniments, accompanied by detailed and melodious guitar renditions. Beam4 maintains sound details without compromising tonal accuracy, smoothly capturing the essence of 60s and 70s popular music.

Additionally, with headphones that emphasize bright high frequencies, such as the qdc Anole V14 and AK T9iE, the Beam4 provides a brilliant sound experience with excellent timbre. The effective power system in the Beam4 enhances sound quality, translating into a cohesive and detailed listening experience. Tunes like Paganini's "24 Caprices" may lack the transcendental clarity of pricier players but offer enduring and melodiously immersive music. In summary, the Beam4 offers bright, warm, natural high-fidelity sound.

--------------- Click here for detailed post (originally in Chinese) ---------------