Jack TRS RCA input Separate volume control 2x 4 outputs Road proof housing The AMP-104 is for expanding or generating 4 headphones channels. It has a 6,3 TRS Jack stereo input and also a RCA stereo input which makes it convenience for multiple applications. All 4 outputs have their own volume controls and the headphones can be connected at both sides of the AMP-104. This makes it also possible to connect 8 headphones, which will be operated in groups of 2 pcs.Jellemzõk:Frequency Response: 20Hz-20KHzInputs: 6,3 TRS Jack, RCAOutputs: 6,3 TRS Jack (8x)Output impedance: 2x 50 OhmOutput power: 2x 50mW @ 32OhmPower supply: 18V AC (adapter included)Dimensions: 53 x 158 x 135 mm (HxWxD)Weight: 0,72 Kg