The input voltage of this product is written as 12-15v.　However, it actually did not work unless it was 13.2v or higher.　I purchased it, thinking it would work at 12V, but I can't use it as it is.　On the way, I boosted it to 15V via a DC-DC converter, and managed to use it.　I had a hard time because the space was just barely.　Also, one of them has the speaker output terminal installed in the opposite direction, so I can not connect the wires.

The input voltage of this product is written as 12-15v.　However, it actually did not work unless it was 13.2v or higher.　I purchased it, thinking it would work at 12V, but I can't use it as it is.　On the way, I boosted it to 15V via a DC-DC converter, and managed to use it.　I had a hard time because the space was just barely.　Also, one of them has the speaker output terminal installed in the opposite direction, so I can not connect the wires.

The input voltage of this product is written as 12-15v.　However, it actually did not work unless it was 13.2v or higher.　I purchased it, thinking it would work at 12V, but I can't use it as it is.　On the way, I boosted it to 15V via a DC-DC converter, and managed to use it.　I had a hard time because the space was just barely.　Also, one of them has the speaker output terminal installed in the opposite direction, so I can not connect the wires.

received in good condition

received in good condition

received in good condition

Works good for the price.

Works good for the price.

Works good for the price.