Studio Monitors & Speakers
the box MA150 Monitor
the box MA150, Active Monitor, Components: 15" / 2", Power: 150 W (RMS @ 4 Ohm), Cone tweeter, 1 Line und 1 microphone input, 3-Band EQ, Gain and level control, Link socket for connecting another active monitor, SPK socket for connecting an 8 Ohm...
https://www.bizrate.co.uk/musicalinstrumentmonitors_speakers/the-box-ma150-monitor-oid852926014.html