Topping TP60 Tripath TA2022 50WPC (80WPC 4 Ohm) Mini Amplifier Amazing power output-up to 80W per channel Valve-like soundstage with buttery midrange Small footprint-11-3/8&quot; L x 6-5/8&quot; W x 2-3/8&quot; H Dual toroidal transformers with top quality components Two sets of RCA stereo inputs with front-mounted source switch