Ultrafide Audio has unveiled the Dias U8, a groundbreaking stereo power amplifier, at the Bristol Hi-Fi Show 2025. Building on the company's successful introduction of the U4PRE and U500DC in 2023, the Dias U8 represents a significant leap in audio amplification technology. Named after the original name for Zeus from ancient Greek mythology, the Dias U8 embodies strength and precision, delivering up to 1 kilowatt per channel in a robust class AB configuration.

Designed by renowned audio engineers Terry Clarke and Alex Cooper, the Dias U8 features a unique floating drive sliding bias system. This innovative design utilizes a single op-amp IC to control the output stage, powered by floating rails that track the power output signal within a control loop. This architecture ensures an open and natural sound, characteristic of Ultrafide Audio’s commitment to uncompromised audio fidelity.

The amplifier's power supply is equally impressive, incorporating a 1000VA toroidal transformer that supports dual-mono channels. Inside the chassis, the Dias U8 employs thirteen high-quality transistors per channel mounted on copper busbars, which are thermally connected to specially designed aluminum radiators. This setup allows for balanced power distribution and high current handling without the risk of damage, while the precision-engineered passive cooling system effectively dissipates heat to maintain optimal performance.

Attention to detail extends to the amplifier’s internal layout, which minimizes the capture of 50 Hz noise from the power source by meticulously placing components. Separate grounding buses for each channel ensure complete silence between tracks, enhancing the clarity and purity of the sound output. Weighing 50 kilograms, the Dias U8 not only delivers exceptional power but also integrates seamlessly into high-end audio setups.

While specific pricing and availability details are yet to be announced, the Dias U8 is poised to set a new standard in high-power audio amplification. With its blend of mythological inspiration, advanced engineering, and superior technical specifications, the Ultrafide Audio Dias U8 is eagerly anticipated by audiophiles seeking unparalleled sound quality and performance.

Ultrafide Audio has unveiled the Dias U8, a groundbreaking stereo power amplifier, at the Bristol Hi-Fi Show 2025. Building on the company's successful introduction of the U4PRE and U500DC in 2023, the Dias U8 represents a significant leap in audio amplification technology. Named after the original name for Zeus from ancient Greek mythology, the Dias U8 embodies strength and precision, delivering up to 1 kilowatt per channel in a robust class AB configuration.

Designed by renowned audio engineers Terry Clarke and Alex Cooper, the Dias U8 features a unique floating drive sliding bias system. This innovative design utilizes a single op-amp IC to control the output stage, powered by floating rails that track the power output signal within a control loop. This architecture ensures an open and natural sound, characteristic of Ultrafide Audio’s commitment to uncompromised audio fidelity.

The amplifier's power supply is equally impressive, incorporating a 1000VA toroidal transformer that supports dual-mono channels. Inside the chassis, the Dias U8 employs thirteen high-quality transistors per channel mounted on copper busbars, which are thermally connected to specially designed aluminum radiators. This setup allows for balanced power distribution and high current handling without the risk of damage, while the precision-engineered passive cooling system effectively dissipates heat to maintain optimal performance.

Attention to detail extends to the amplifier’s internal layout, which minimizes the capture of 50 Hz noise from the power source by meticulously placing components. Separate grounding buses for each channel ensure complete silence between tracks, enhancing the clarity and purity of the sound output. Weighing 50 kilograms, the Dias U8 not only delivers exceptional power but also integrates seamlessly into high-end audio setups.

While specific pricing and availability details are yet to be announced, the Dias U8 is poised to set a new standard in high-power audio amplification. With its blend of mythological inspiration, advanced engineering, and superior technical specifications, the Ultrafide Audio Dias U8 is eagerly anticipated by audiophiles seeking unparalleled sound quality and performance.