New Product Tour: ABOX 44B Audio Box Processor——S-Track
New Product Tour: ABOX 44B Audio Box Processor

Abox 44B is an audio processor mainly used for local education and remote interactive education. It is equipped with digital audio processing technology with excellent performance, including full band adaptive noise suppression, feedback suppression algorithm, and remote pickup microphone. It is easy to install, operate and easily meet the high-quality voice requirements of local recording and remote interactive education.


Front panel controls:

Indication and knob Function description
POWER Power indicator light, always on after power on
SYS Operation indicator light, slow flashing indicates normal operation
MIC1 & MIC2 Gain adjustment of MIC channel 0 ~ 30dB
Phantom Mic channel 48V phantom power switch
Bypass Algorithm switch
USB System debugging port

Rear panel interface:

Indication and knob Function description
MIC Microphone input interface, supporting two-way microphone access, with 20dB gain adjustment knob
LINE IN 2 (left and right channels) linear input interfaces, usually connected to local audio sources, such as DVD, notebook, etc
SPK Signal output channel
LINE OUT 2 (left and right channels) linear output interfaces, usually used for external power amplifier or active speaker
DC 12V 12V external power interface

Product characteristics:

· Built in feedback suppression, noise algorithm

The multi-point filter and multi subband frequency shift technology maintain the harmonic nature of the original pitch period, and will not cause sound distortion; through the acoustic modeling of the room feedback path, the acoustic feedback can be adaptively eliminated; the noise suppression algorithm can quickly and accurately track the environmental noise change and maintain good output sound quality.

· Two channel MIC input

Two microphone interfaces are provided to support gain adjustment and 48V phantom power supply. Increase the flexibility of users' use, and meet users' use needs to the greatest extent.

· Plug and play, portable operation

The pre-set scene, without software adjustment, plug and play, has strong universality, flexible and convenient deployment, greatly reducing the difficulty and cost of engineering wiring.


Detailed parameters:

Equivalent noise(20Hz~20kHz, 22dB Gain) <-103dBu
Dynamic range (20Hz~20kHz, 0dB) > 100dB
Maximum output level (balanced) 10dBu
Output impedance 100Ω
Sampling rate 48KHz
A/D-D/A Converter 24bit
Phantom Power +48 VDC
MIC channel
Frequency response (20Hz~20kHz @ +4dBu) +0/-0.2dB
THD +N (1kHz @ +4dBu) < 0.0035%
Maximum input level -18dBu (VOL Maximum)  8dBu (VOL Minimum)
Maximum gain 30dB
Input impedance 20kΩ
Line in channel
Frequency response (20Hz~20kHz @ +4dBu) +0/-0.2dB
THD +N (1kHz @ +4dBu) < 0.005%
Maximum input level 8dBu
Maximum gain 3dB
Input impedance 20kΩ
Channel isolation -95dB
Bottom noise (A-weighted) -98dBu
Working temperature 0-40℃
Working power supply DC 12V
Power consumption <8W