The new Reference 01 Series. Future Proof. The new "Power DAC" A-H01 is a digital amplifier using B&O ICEpower technology capable of providing 2 x 50 watts of audiophile quality amplification. In addition to its two analogue inputs, the A-H01 features two digital inputs (optical and coaxial) for signals processed through a high resolution, 32 bit, 192 kHz D/A converter chipset (type 1795) from BurrBrown®. A PC or MAC computer can be connected via the Tenor® Aysnchronous USB Audio Class 2 input on the rear panel. Processed digital signals are then routed through the amplification stages to attached passive loudspeakers. A subwoofer pre-out connection is provided for those wanting extra punch. Remote control included which operates the amplifier functions as well as other matching Reference H-01 components. General Specifications: Supports Asynchronous Transfer Mode. Motorized Volume Control. Output Power: 50W x 2 (4 ohms, 1kHz, less than 1% THD). 25W x 2 (8 ohms, 1kHz, less than 1% THD). USB Input: x 1 (USB 2.0). Digital Audio Inputs: x 2 (Coaxial, Optical). Analogue Audio Inputs: x 2 (RCA). Subwoofer Preout: x 1 (RCA). Headphone Out: x 1 (6.3mm). Speaker Terminals: x 1 pair (Binding Post). Input Signal Sampling Rate: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz. Dimensions (W x H x D): 215 x 55 x 215.