The A-20 direct energy design amplifier with symmetrical construction offer excellent, high quality sound, wrapped in understated, technical elegance. The polished, brushed aluminum front panel comes with control knobs for volume, bass/treble/balance & input source selection. A range of tactile buttons finetune loudness, direct mode & speaker A/B. The rear panel provides immediate connectivity to aux-in, network, recorder, speaker A+B & source direct mode devices.