Allows you to measure your system's frequency response to assist with active crossover tuning/set-up, sub integration or room treatment selection and placement.

You need a Windows laptop to run the software and provide signal (via USB port).

Includes the following:
Rives Acoustical Measurement Software
Professional Test Cables
USB Audio Interface
Pre-amp
Microphone
Hard Case with Foam Inserts
User Manual
List price was $1100.00 for this kit, looking for £150 please.