Yamaha’s new A-U671 Digital Amplifier is one of the new breed of amps built for our age with a focus on making digital sources – especially high-resolution sources – sound as good as possible.
The amplifier uses PWM (Pulse Width Modulation) with an extremely simple circuit configuration to provide both natural, uncoloured sound quality as well as high efficiency.
It has a single rear USB input and one analog input, with speaker and subwoofer outputs. Output power is a healthy 70W per channel.
High end digital processing
The USB D/A converter is the 32-bit high-performance SABRE 32 from ESS Technology, and its USB device controller IC is the latest product from XMOS, the semiconductor firm. It is compatible with native playback of the DSD 5.6MHz (DSD128) format or 384kHz/32-bit playback. Supported formats are:
MP3, WMA, MPEG4, AAC, WAV, FLAC, AIFF, ALAC, DSD – 192 kHz / 24bit; 96 kHz / 24 bit; 5.6 MHz
Use with headphones via your PC
The USB DAC function allows it to also be used as a high quality headphone amp for computer audio. Its internal high performance D/A converter draws out all of the quality of high-resolution sound sources to give you the purest, most intimate enjoyment of high-quality sound.
Yamaha A-U671 Price & Availability
The Yamaha AU671 is available now in Black or Silver. Recommended retail price is $699.
(Note – the speakers shown in the top image are not included. Just in case you were wondering :)