The J+4 is a stereo preamplifier that is used to convert an unbalanced signal (-10 dB) to a balanced signal (+4 dB) that professional audio equipment works with. Additionally, thanks to the use of premium Jensen transformers, the signal is free from the noise associated with the presence of ground loops. A full range of the most commonly used connectors are used for input, so you don't have to look for a reducer and can easily connect computers, tablets, mobile recorders, instruments or hi-fi devices.
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