• High-definition HDMI input and output, supporting 3D video format, with more realistic and delicate images, and more stunning effects. Independently extract HDMI audio signals as local sound amplification;
• Recording output interface, convenient for organizing meeting records and saving important meeting content;
• Efficient digital amplifier, adopting IR design scheme, high efficiency, clear sound quality, and strong penetration power;
• Built in DSP algorithm based adaptive feedback suppression function (AFC), perfectly solves the problem of microphone whistling, no need for debugging, one click solution;
• Can be connected to an external wall control touch screen for remote control and management, convenient and fast;
• Exquisite craftsmanship, using SMT surface mount technology, with neat and beautiful circuit layout, minimizing electromagnetic interference caused by unreasonable circuit design and bringing noise to the system;
• Professional function operation keys and concealed knob design, which can be easily operated by dismantling the magnetic high-end organic glass panel to set the required curing functions; This hidden design improves the safety, stability, and specificity of system operation, which can avoid damage to equipment or systems caused by nonprofessionals or non-trained users due to mis operation;
• Optional U244DMH U-band wireless microphone, suitable for mid to high end electronic education equipment, multimedia classrooms, speech conferences, etc; The product operates in the globally recognized license free ISM green frequency band in the U-band, with a sampling rate of 32K/16bit, meeting the requirements for high-quality vocal transmission. In addition, dedicated RF technology and digital encoding methods give it market advantages such as low noise, no crosstalk, stable communication, and long transmission distance.
• 1 6.3 microphone input interface on the front panel;
• 2 balanced microphone signal inputs on the rear panel, each with a separate 48V phantom power supply;
• 4 HDMI high-definition inputs and 1 output, support 3D video format, resolution up to 1080p/60Hz, use standard AWG25 cable input transmission distance up to 25 meters, output transmission distance up to 15 meters, and extract high-definition audio signals for local sound reinforcement;
• 5 types of audio input signal switching: HDMI high-definition audio, 1 stereo input can be connected to an external CD player or other audio input, USB interface can directly read U disk audio signals, Bluetooth playback can transmit audio signals through mobile phones or tablets, SD card insertion can directly read audio signals;
• With 2-channel audio main output and independent recording output port;
• Microphone signal breakpoint processing interface, external equalizer, effector, etc., to expand larger space or meet entertainment needs;
• Built-in dual-channel digital amplifier 2×200W 8Ω (1KHZ, THD≤0.05%);
• It can be connected to the QK-244 wall control touch screen to achieve remote control and management via RS-485, with a maximum distance of 1 km;
• It has an RS232 interface for external connection to various brands of smart central control;
• It can be used with a 2.4G wireless microphone, which has a wider range of applications.
Audio input
Interface | Interface name | Number of channels | Standard input level | Maximum input level | Input impedance | |
MIC IN | Rear panel | XLR-3-31 | 2 | -54dBu | -30d Bu | 2.7kΩ |
MIC IN | Front panel | PHONO | 1 | -54dBu | -30d Bu | 2.7kΩ |
USB | USB | 1 | ||||
Bluetooth | BLUETOOTH | 1 | ||||
CD IN | 1 | -10dBu | +10dBu | 10kΩ | ||
INSER | PHONO | 1 |
Audio output
Interface | Interface name | Number of channels | Standard output level | Maximum output level | Load impedance |
REC OUT | RCA | 2 | -5dBu | ||
MAIN OUT | 2 | -10dBu | |||
MIXER | XLR | 2 | -20dBu | +10dBu | 10kΩ |
USB front panel | USB | 1 | -10dBu | +20dBu | 10kΩ |
Speaker output | Screw type connection port | 4 | 200W+200W (8Ω, 1KHZ, THD≤0.05%) |
Video input/output
Interface | Model | Number of channels |
HD input | HDMI 700P/60Hz 1080p/60Hz | 4 |
HD output | HDMI 700P/60Hz 1080p/60Hz | 1 |
Physical specifications
Power requirement: | 450W |
Dimensions: | 430×89×385 (width/height/depth) mm |
Net weight: | 14.3kg |
Operating temperature: | 0℃ to 40℃ |