O-NOORUS D1 PRO TPA3255 PFFB Stereo Amplifier With 3-Band EQ High-pass

High-pass filter, low-pass filter, 3-band EQ

The D1 PRO uses the TI TAP3255 amplifier chip, designed for simplified 2.1 channel audio. It features a single RCA input, a high-pass filter on the main output, a low-pass filter on the sub-output, a 3-band EQ for tuning, and a color-changing digital display. Volume, filter, tone, color, and brightness can all be easily switched using the remote control.

D1_PRO_208ab0a4-c9c3-497d-830c-43598ad7210e

2.1 Channel System Creation

It features built-in professional audio processing capabilities. Its main output is equipped with an adjustable high-pass filter (supporting 120Hz/100Hz/80Hz/60Hz/bypass), allowing precise control over the low-frequency limits of the main speakers for clearer mid and high frequencies. Simultaneously, the subwoofer output is also equipped with a corresponding low-pass filter (also supporting 100Hz/80Hz/60Hz/40Hz/bypass), perfectly driving the subwoofer to easily create a powerful 2.1 channel system and deliver clear and impactful crossover effects. Furthermore, 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 for a truly personalized listening experience.

Volume control system

There are two ways to adjust the volume: a potentiometer and an electronic volume control via the remote control.

The electronic volume chip uses TI's PGA2311U.

High-efficiency heat dissipation design

The D1 Pro 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.