The MAX98314 mono, 3.2W Class D amplifier with integrated input-coupling capacitors measures 1 mm x 1 mm. As per Maxim, the capacitors provide better voltage-independence and matching than standard Class D amplifiers with external input capacitors. Also, the amp provides Class AB audio performance with Class D efficiency. MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.