AudioSource Amp Two 2-Channel Amplifier 2 Channels, Bridgeable, RMS Power per Channel: 80 W @ 8 Ohm, Frequency Response: 20 Hz - 200 kHz, SNR: 110 dB Product rating: 1 store offer at £69
Tangent AMP50 2-Channel Amplifier 2 Channels, RMS Power per Channel: 40 W @ 4 Ohm / 30 W @ 8 Ohm, Frequency Response: 10 Hz - 63 kHz, SNR: 90 dB, With Remote Contro... 1 store offer at £76
Plantronics MX10 Amplifier 1 store offer at £24
GN Netcom 8210 MPA Amplifier 3 store offers from £72 - £113
Plantronics Polaris PA8 Amplifier 1 store offer at £26
Plantronics E10 Amplifier 2 store offers from £93 - £118