Project Amp Box S2 - Sounds very good with Concept 20s.
The amplifier is very compact just 103 x 37 x 118mm
Power Amplifier that puts 23W at 8 Ohms or 35W at 4 Ohms into 2 channels.
Has cosmetic scratches in one corner but is fully working with all parts included.
Comes with 2 10cm RCA cables included.