The ART SDA-1 Digital Amplifier is one of the most versatile amplifiers on the market today. The SDA-1 offers an exquisite level of sound quality with a user-friendly easy to read interface that allows you to get the amplification you need in an instant. Being a digital switching amplifier over an analog linear amp the SDA1 brings you a theoretical efficiency of 100 percent thanks to the fact that none of the power delivered to the unit is turned into heat. This means a lighter more compact unit that wont take up all your rack space no fans for cooling making the SDA1 quiet and perfect for studio installation use and a more affordable price that wont break the bank. Balanced inputs and versatile multi-way binding post outputs give you quick connectivity options to any source or speaker combination. In addition volume settings are kept safe from unwanted adjustments or knocks thanks to the handy pop-up attenuator knobs that can be recessed into the rugged and secure aluminium and steel chassis in an instant. Flat response 20Hz to 20kHz frequency range on the ART SDA1 makes this the perfect choice for your studio when critical listening is a must. Specifications Output Power (2 Ohms): 2 x 100 Watts RMS Output Power (4 Ohms): 2 x 200 Watts RMS Output Power (8 Ohms): 2 x 140 Watts RMS Output Power (16 Ohms): 2 x 80 Watts RMS Bridged Output Power (4 Ohms): 200 Watts RMS Mono Bridged Output Power (8 Ohms): 400 Watts RMS Mono Bridged Output Power (16 Ohms): 280 Watts RMS Mono Bridged Output Power (70V Line): 280 Watts RMS 70Vline Load Impedance (Min): 2 Ohms/Ch 4 Ohms Mono CMRR: > 60 dB (Typical @ 1 kHz) Frequency Response: 20 Hz to 20 kHz (+/- 0.5 dB) THD: Hum and Noise:> 95 dB Below Clipping (A-Weighted) Input Sensitivity: 0.707 Volt for Full Power Overall Efficiency: >78 @ Full Power (4 & 8 Ohms Operation) Height: 1.75″ Width: 19″ Depth: 9.5″ Weight: 3.4 Kg Product Code: ART-SDA1E4