Xcel Key Safe Digital Lock Box Hasp Attaching 5 Key GP3V G1Z XED4004D 4 CHANNEL XED 72609 XED4004D 4 CHANNEL XED SERIES AMPLIFIER 400W MAXFEATURES:Latest High Efficiency Class D TopologyCompact Size with Ambient backlit logoRCA Pass Thru output for easy system expansionFully Variable Crossovers (12dB per octave)Handles HI and LO level input to 12V2 Ohm Stable Stereo and 4 Ohm Mono (CH3 4) for 3 Ch modeProprietary Vega Bass Boost EQ Up To 12dBSPECIFICATIONS:4 Channel Amplifier60W x 4 at 4 Ohm RMS90W x 4 at 2 Ohm RMS160W x 2 at 4 Ohm RMS Bridged Mono2 Ohm Stereo RATCHET OFF SET DOUBLE RING SPANNER 7MM X 9MM Different size at each end to give 2 sizes with one wrench cleaning crews or onto any fixed item with the use of some sturdy chain