Amplifier SZ-650

Highlight Features

Amplifier SZ-650

The SZ-650 is a high-power mixer amplifier developed as the central control and amplification unit for commercial public-address systems. Delivering 650 W of rated output, it can distribute announcements and background music through both low-impedance loudspeakers and 70 V / 100 V speaker lines. Multiple microphone and auxiliary inputs, integrated media playback, flexible power options, and comprehensive protection make it suitable for schools, offices, retail complexes, factories, hotels, and other medium-sized commercial installations.

Product Description

• 650 W high-power output: The amplifier provides sufficient output capacity to operate multiple loudspeakers across medium-sized public-address and background music systems.
• Class AB amplification: The integrated Class AB power stage delivers stable operation and clear audio reproduction for speech, announcements, and programme music.
• Flexible speaker system compatibility: Supports 4–16 Ω low-impedance loudspeakers as well as 70 V and 100 V distributed speaker lines.
• Multiple audio inputs: Two microphone inputs and three auxiliary inputs allow paging microphones, music players, and other audio sources to be connected simultaneously.
• Integrated media playback: Bluetooth, FM radio, USB, SD card playback, and an LCD display provide convenient access to commonly used audio sources.
• Independent tone adjustment: Two-band bass and treble controls allow the overall sound balance to be adapted to different loudspeakers and acoustic environments.
• Dual power operation: Supports 110 V–230 V AC mains power and 24 V DC backup power for greater reliability in commercial audio installations.
• Built-in chime function: A dedicated chime button provides an attention signal before paging or public announcements.
• Comprehensive circuit protection: Protection against short circuits, overload, overcurrent, and DC faults helps safeguard the amplifier and connected loudspeakers.
• Durable rack-style construction: The steel chassis and aluminum front panel provide reliable protection for fixed installation and professional daily operation.

Product Specification