Metro One Plus PRO, integrated power amplifier 2 x 85W RMS / 8Ω, 2 x 108W RMS / 4Ω, class D, with a particularly small size ideal for Hi-Fi systems and permanent installations in professional spaces. The new amplifier features an RCA input and Bluetooth 5.2 for wireless music streaming from portable devices and computers. It has a line out for connection to another amplifier or subwoofer. On the front, apart from the volume control, there is a switch for selecting between the incoming RCA or Bluetooth signal, an ON/OFF switch, and Bass & Treble controls. Its construction materials are of excellent quality, such as TPA3255 & 5NE5532 OP operational amplifiers and ELNA and NICHICON capacitors. In the Bluetooth circuit, it uses the Qualcomm QCC304X high-quality receiving chip with very low latency.