Convert digital signals into high-quality analog signalsThe DAC-50 is an optional digital input board that supports a broad range of digital sound sources and is equipped with a high-precision MDS type D/A converter for optimal sound quality. The converter uses AK4490EQ chips from Asahi Kasei Microdevices in a double parallel configuration per channel. Installing the board in a slot on the rear panel of a supported Accuphase component provides direct input capability for signals from digital components for high-grade playback.Three types of inputs are provided: USB Type B, Optical, and Coaxial. The USB input handles signals up to 11.2 MHz / 1-bit [DSD] and 384 kHz / 32-bit [PCM], the coaxial input supports up to 192 kHz / 24-bit and the optical input up to 96 kHz / 24-bit. If multiple input signals are supplied at the same time, the unit automatically locks onto a signal when "Option 1" is selected, using the following priority sequence: COAXIAL → OPTICAL → USB. To exclude a signal from being selected, either disconnect the cable or turn power of the respective equipment off.SpecificationsUSB:Type: USB 2.0 High Speed （480Mbps） compliantSampling frequency DSD: 2.8224MHz, 5.6448MHz, 11.2896MHz(1bit)*11.2896MHz(ASIO only)Sampling frequency PCM: 32kHz～384kHz, 32bitOptical:Type: JEITA CP-1212 compliantSampling frequency: 32kHz～96kHz, 24bitCoaxial:Type: IEC 60958/AES-3 compliantSampling frequency: 32kHz～192kHz, 24bit
