O-NOORUS D4 II TPA3255 PFFB stereo amplifier with HDMI ARC Bluetooth U

comprehensive Multi-scenario applications

The D4 II is a fully-featured audio center, centered around the TPA3255 digital amplifier, designed for audiophiles who demand high-quality sound and flexible connectivity. It integrates an extremely rich array of input options: from classic balanced and RCA analog inputs to convenient Bluetooth and USB playback, and even high-quality digital connections including USB, optical, and coaxial, as well as easy HDMI ARC TV connectivity. Virtually any audio source can be easily connected, making it the central hub of your home entertainment system.

2.1 Channel System Creation

In addition to comprehensive connectivity features, the D4 II also boasts built-in professional audio processing capabilities. It offers independently adjustable high, mid, and low frequency equalizers, with an adjustment range of -12dB to +12dB, allowing you to fine-tune the timbre of each frequency band according to music genre or personal preference, resulting in a truly personalized listening experience. Easily create a powerful 2.1 channel system and deliver clear and impactful crossover effects.

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High-quality sound is provided.

built-in ESS ES9023P DAC chip, and support for high-definition audio up to 192kHz, the D4 II is not only powerful but also ensures that every signal is amplified cleanly and powerfully, meeting the high-quality sound requirements in various scenarios.

High-efficiency heat dissipation design

The D4 II employs a highly efficient "integrated chassis cooling" design. Its core power amplifier chip, TPA3255, is directly and tightly connected to the heavy aluminum alloy casing, transforming the entire metal body into a giant passive heat sink. This rapidly and evenly dissipates heat with zero noise, ensuring stability and quiet operation during extended periods of high-power operation.

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Intelligent Multi-Device Synergy

supports HDMI ARC/OPTICAL/COAXIAL input, Sampling rate 192kHz, Enabling seamless connection to modern TVs. This allows for convenient audio playback from the TV, including streaming services, gaming consoles, and cable/satellite boxes, directly through the amplifier for a more immersive and high-quality audio experience.