The STSI_PA is a high performance Class D audio amplifier with integrated closed loop feedback technology (known as PurePath HD) and up to 120 W of power. PurePath HD technology enables traditional AB-Amplifier performance levels (< 0.03% THD) while providing the power efficiency of traditional class D amplifiers. The amplifier is designed to broadcast emergency messages in accordance with CEI EN60849 specifications for constant voltage loads (100 Vac) and low Amperes. Available in different cases to suit your installation requirements.

• WEB management interface;
• Antilarsen Filter integrated;
• Auto activation based on the level of the input signal (VOX function);
• ALC (Automatic Level Control) can be enabled on all inputs;
• Automatic generation of the warning signal (two-tone bell);

• Day&Night Volume Control;
• Broadcast of incoming VoIP messages (SIP phone integrated);
• Support for automatic transmission of messages to a remote VoIP recorder;
• Auto insertion of the ongoing recording signal;
• Periodic diagnostic including the test of the speaker line.