The YST-SW225 has the following Main Features:

• QD-Bass (Quatre Dispersion Bass) Technology
• Advanced YST II (Yamaha Active Servo Technology II)
• PWM Digital Drive High Efficiency Amplifier
• Linear Port for Minimizing Extraneous Noise
• 150 W Dynamic Power
• BASS (Bass Action Selector System)
• 20cm (8”) Multi-Range Driver with Magnetic Shielding
• 28–200Hz Low Frequency Reproduction
• Auto Standby with Sensitivity Selector (HIGH, LOW and OFF)
• Low (0.5W) Standby Power Consumption