O-Noorus D4 Pro - TPA3255 PFFB Balanced Amplifier with DAC, HDMI ARC/Sub-Out/LPF/HPF

[Guddu]

Here is new additional from O-Noorus...............

O-NOORUS D4 PRO TPA3255 PFFB stereo HPF LPF Amplifier with Balance HDMI ARC Bluetooth USB Optical Coaxial RCA input, 3-Band stereo EQ tone and bypass

O-NOORUS D4 PRO TPA3255 PFFB stereo HPF LPF Amplifier with Balance HDM

Specifications：Model: D4 PROTHD: ≤ 0.004% @1KHz 5WSNR: ≥ 93dB @1KHz 5W SNR: ≥ 106dB @1KHz 120W SINAD: 90dB @1KHz 5WInput Mode: Balance/RCA/HDMI ARC / BLUETOOTH/ USB /Optical/ Coaxial Power Supply: 36V5A/48V5A/NO POWERWorking Voltage: 24V~ 48VTerminating Impedance: 2-8ΩFrequency Range...

www.o-noorus.com

Specifications：
Model: D4 PRO
THD: ≤ 0.004% @1KHz 5W
SNR: ≥ 93dB @1KHz 5W SNR: ≥ 106dB @1KHz 120W
SINAD: 90dB @1KHz 5W
Input Mode: Balance/RCA/HDMI ARC / BLUETOOTH/ USB /Optical/ Coaxial
Power Supply: 36V5A/48V5A/NO POWER
Working Voltage: 24V~ 48V
Terminating Impedance: 2-8Ω
Frequency Range: 20Hz - 20kHz
Output Mode: Passive speakers/Active subwoofer

Package Include:
O-NOORUS D4 PRO Amplifier*1
48V5A/48V10A/NO POWER(Optional)
User Manual*1

Mini amplifier, Multiple inputs, Custom Tone, Big Power, Low Distortion

--TPA3255+PFFB technology, full-frequency low distortion, driving audiophile-grade speakers.

--Full-scenario interconnection: HDMI ARC synchronizes TV volume, Bluetooth 5.3/optical fiber/coaxial /RCA/USB multi-input, creating 2.1 channels.

Customizable Sound

--Free customization of tone｜Interchangeable op amp 3-band EQ tone ±12dB adjustment, precise adjustment of vocals/low frequency.

--BASS, MID, TREBLE for 100Hz, 1000Hz, 10000Hz frequency bands respectively independent adjustment (±12dB)

Main output with high-pass filter and bypass​

60Hz high-pass filter parameters：

5th order Butterworth; 60Hz passband; Stopband: Fs: 45Hz, Asb: -12.00 dB

80Hz high-pass filter parameters：

5th order Butterworth; 80Hz passband; Stopband: Fs: 60 Hz, Asb: -12.00 dB

120Hz high-pass filter parameters：

5th order Butterworth; 120Hz passband; Stopband: Fs: 90 Hz, Asb: -12.00 dB

Congrats & All the Best @Alexander Lin

 

[ppataki]

HPF and LPF, love it!!
Long awaited features for those with passive subs and no DSP

 

[Guddu]

@Alexander Lin
Just a quick suggestion to simply improve user experience:

 

[nirurin]

Dangit. I'd already been having trouble deciding between picking up the ampapa D1 or the onoorus D3pro.
And now there's a D4 pro which.... seems to have all the D3pro features, but with a few extra controls on top. Less of a 'screen' than the D1 or D3pro but I was already thinking that after the novelty wore off I'd probably have the screens turned down to minimum brightness (or off) anyway.

Dangit. I may just buy one of these and hope it's good.

 

[Totemis]

@Guddu @Alexander Lin
Hello, O-noorus website is missing a lot of information and also the manual download for understanding better the ux experience .
Do you know the max power (48v-10A) @4 Ohm ? 200w each channel ? Do yo know if we can adjust right/left power output for each channel ? Is Rca input also output (like D3 pro) ? Does usb c deliver 5v output ? is Hdmi ARC also CEC ? Does D4 pro is sharing some similar functionality as D3 pro ? Best regards to o-noorus dreamteam.

 

[PPPossum]

Been looking at this for a while now because I like the physical knobs and the integrated DAC circuitry.
If anyone know a similar device please let me know.

Back to the D4 Pro. O-noorus tells me via E-mail that the specs, test data and general information on this unit is going to go live (edit: On their site of course) sometime on Saturday.
So... Waiting patiently for that.