This is a small but high-quality phono preamplifier. Due to the physical limitations of vinyl records, they have a equalisation applied during the pressing. When played back, this equalisation must be undone. Often the required preamplifier is built into the record player, but if it is not, an external one, such as NS-04, is required.
Comes as a full kit, containing:
Note: NS-04 requires an external power supply.