O-NOORUS D3 PRO TPA3255 PFFB Stereo Amplifier and AK4493S DAC Decoder with HDMI ARC Bluetooth5.4 USB Optical Coaxial RCA input

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onoorus audio

Regular price $240.00 USD
Regular price Sale price $240.00 USD
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1、Hardware configuration
Decoding core: AKM AK4493S flagship DAC chip, supports PCM 768kHz / DSD512 native hardware decoding

Amplifier module: TI TPA3255 PFFB, output power 2×300W@4Ω (high efficiency and low distortion)

Digital interface: XMOS XU316 USB audio solution, supports ultra-low latency asynchronous transmission

Bluetooth chip: Qualcomm QCC3084, compatible with aptX Lossless / LDAC / LC3 and other high-definition encodings

Sound control system: NJW1194 electronic volume chip, supports ±10dB high and low bass adjustment

2、Input interface
Digital input:

USB (Type-B USB1: PC/mobile phone decoding; Type-A USB2: USB flash drive direct reading)/HDMI ARC (TV audio return.) /Optical/coaxial (SPDIF, supports 24bit/192kHz)

Analog input:RCA (input/output multiplexing)

Wireless input:Bluetooth 5.4 (aptX Lossless transmission, delay <50ms)

3、Output interface
Main channel: stereo output (20Hz-20kHz full frequency band)

Low pass filter: independent subwoofer interface (40-200Hz adjustable, crossover point can be set)

RCA multiplexing: converted to pre-stage output in non-input state (sound source sharing mode)

4、Working mode
D-F mode (decoding mode, The sound source is output from the DAC, bypassing NJW1194, and the volume is not adjustable)
D-B mode (decoding mode, the sound source is output from the DAC, passing through NJW1194, and the volume is adjustable)
A-F mode (amplifier mode, the sound source is output from the DAC, bypassing NJW1194, and the volume is not adjustable)
A-B mode (amplifier mode, the sound source is output from the DAC, passing through NJW1194, and the volume is adjustable)

5、Technical Parameters

TPA3255 Bluetooth 5.4 Amplifier

Integrated AKM AK4493S flagship DAC (supports PCM 768kHz/DSD512 hard decoding) and TI TPA3255 PFFB amplifier, input covers USB XMOS XU316/optical fiber/coaxial/HDMI ARC/Bluetooth (aptX Lossless+LDAC) and RCA multiplexing interface; output supports stereo and independent subwoofer (40-200Hz adjustable). Built-in NJW1194 chip realizes ±10dB tone adjustment