Line transformer for an optimum signal transmission from line units to a mixer or amplifier. By using a transformer coupling, interferences due to matching problems, e.g. hum loops, are prevented to a large extent. Input and output are galvanically isolated. All inputs and outputs can be used via 6.3 mm jacks and XLR jacks, balanced as well as unbalanced. Output impedance can be switched from 1:1/600 Ohm to 2:1/150 Ohm. Phase can be switched from 0° to 180°. Ground lift switch. Wideband balancing transformer. Robust metal housing. Frequency range: 20 - 25000 Hz. Input signal: 5 V. Input impedance: 600 Ohm. Output impedance: 600 Ohm/150 Ohm. Inputs: 1 x 6.3 mm jack, bal.1 x XLR, bal. Outputs: 1 x 6.3 mm jack, bal.1 x XLR, bal. Dimensions: 120 x 44 x 90 mm. Weight: 545 g. Colour: Black