A project that will help you monitor easily and accurately the output of your amplifier. Suitable for any amplifier from 0.1 to 100 Watts RMS. It is a “must” for every amplifier, especially if the Hi-Fi system is also used for tape recordings.The kit includes the two instruments.The whole circuit is small enough to be fitted with no special difficulty in any existing amplifier case. V 12VDC P.S. 1061 PCB 33x87mm