◆ The new Class-TD type 4-channel professional ampl ifier, high efficiency, pure sound qual ity, low heat.
◆ Circulating transformer power supply, low-frequency more powerful, better strength.
◆ Efficient cool ing system, the chassis internal and surface temperature is very low.
◆ Ultra-perfect protection system, high frequency protection, overload / overcurrent protection, over temperature protection,
output short circuit protection, DC protection, distortion l imiting protection.
◆ Unique boot volume gradual ly large function, can protect your misoperation damage to the speaker.
◆ Smal ler, l ighter chassis containing more power, very easy to tour appl ications.
◆ SMT chip technology, more stable performance.
◆ Professional-grade fever capacitance, low frequency more intensity, clean and clear treble.
MODEL P440 P430 P420 Rated output power 8Ω 400W*4 300W*4 200W*4 Rated output power 4Ω 700W*4 500W*4 300W*4 Frequency response 20Hz-20KHz Signal-to-noise ratio >103db >90dB Sensitivity 0.775V/1.0V/1.4V 0.5V/0.7V/1.0V THD <0.05% Coeffecient of damping >1000 >600 Resolution >70db Conversion rated >20V/µs Input Resistance 10kΩ/20kΩ 10kΩ Output Circuit: Class-AB Net weight 15 12 10 Package size(W*D*H) 483*450*88mm
DM20new version update step
1) Copy the compressed package to the USB flash drive (note that you don't need to decompress it, it is best to format the USB flash drive first)
2) Insert the USB flash drive into any USB port of the mixer, and click “SETUP” on the mixer panel → “Maintenance” → “Update from USB” in the screen
Follow the prompts to complete the installation steps.