Musical Instrument Accessories
M-100 Professional (24-2300 MHz) Pre-Amplifier
Wide Frequency Range Adjustable Gain Control Low Noise Amplification Dual Power Options Plug-and-Play
https://www.bizrate.co.uk/musicalinstrumentaccessories/m-100-professional-24-2300-mhz-pre-amplifier-oid4487494648.html