SU4.13

Sumico SU4.13 power amplifier delivers powerful, detailed, and smooth sound with the natural fidelity of a Class AB circuit while offering high conversion efficiency, cool operation, and virtually no signal distortion or RF interference like a pure Class D circuit.

With output power up to 1300W per channel (8 Ohms) and 2600W per channel (4 Ohms), the Sumico SU4.13 Power Amplifier easily drives full-range speakers or low-sensitivity subwoofers without sound loss. Especially in bridge mono mode, its power can reach 3900W (8 Ohms), making it ideal for dual 15-inch subwoofer setups in bar club systems, stages, and premium commercial karaoke rooms. Moreover, with its four independent amplification channels, the Sumico SU4.13 is perfectly suited for configurations of two full-range speakers with two passive subwoofers using just one amplifier instead of two separate bulky amplifiers during installation.

One of the standout features of the Sumico SU4.13 4-channel power amplifier is its built-in intelligent protection system. The device can automatically detect and handle abnormal conditions such as overcurrent, short circuit, very high frequency (VHF) interference, direct current (DC) voltage, and overheating.

In addition, the soft start circuit reduces sudden load on the power system when switching on – a crucial function in professional environments with multiple devices operating simultaneously.

Sumico SU4.13 Power Amplifier also supports flexible operation modes such as Stereo (two independent channels), Parallel (a common signal for 2 channels), and Bridge (bridging mode to double the output power – suitable for high-power speaker loads), allowing users to configure the device in various ways depending on the specific requirements of each sound system.

The input stage uses balanced XLR connectors to eliminate long-distance interference and preserve signal integrity. In particular, users can select from seven input gain levels: 23 / 26 / 32 / 35 / 38 / 41 / 44dB, ensuring easy compatibility with various mixers, DSPs, or other signal sources.

The output stage uses dedicated Speakon connectors – a widely adopted standard in stage sound systems – providing secure, safe, and stable connections for high-power speakers.

Sumico SU4.13 Power Amplifier is equipped with a cooling system that employs multiple aluminum and copper heatsinks directly attached to the power components to enhance thermal conductivity. Its stepless speed-regulated fan system, designed with a front-to-rear airflow path, automatically adjusts fan speed according to actual operating temperature. This ensures rapid heat dissipation during continuous high-power operation, keeping the amplifier within a safe temperature range while maintaining the lowest possible noise level.

Be equipped with a stepless speed-regulated cooling fan system featuring a front-to-rear airflow design, combined with multiple copper heatsinks, it delivers rapid heat dissipation – a key factor when the amplifier operates continuously at high power levels.