The eXentro PA 8250 / 8125 emergency system amplifiers are high efficient flexible power amplifiers. The PA amplifiers can be used in fixed installations in low impedance, 50 V and 100 V bridged operation; both can also be used in eXentro Fire Alarm systems. The amplifiers deliver 8 x 250 Wrms @ 50 V (PA 8250) and 8 x 125 Wrms @ 50 V (PA 8125) and in bridge mode: 4x 500 Wrms @ 100 V (PA 8250) and 4x 250 Wrms @ 100 V (PA 8125), both without using 100 V output transformers. Output power can also be allocated: up to 300 Wrms per channel depending on the connected loads. Both amplifier models include 8 high efficient Class D output stages and a redundant Switch Mode Power Supply (SMPS) operating from both a 230 VAC as from a 48 VDC power source (the PA-8250 includes 2 power supplies, 1 for Ch.1-4 and 1 for Ch.5-8). Each channel includes balanced input connections with input gain control and features an EQ card slot for Bose series II-s EQ cards.