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• Benchmark audio full#

The actual D-A conversion (which can also handle DSD streams) is performed by the latest ESS Technology 'SABRE32' reference DAC chip, in a configuration that differentially sums the outputs of four balanced D-A converters together to maximise linearity, signal-to-noise and dynamic range performance. It also features a clever hybrid gain control (accounting for the 'HGC' in the product title) whereby analogue inputs are attenuated with a motorised analogue potentiometer, and digital inputs are attenuated by a 32-bit digital attenuator, which is controlled by the same rotary pot. It is a total redesign from the ground up and is claimed to outperform the previous generation DAC1 in every respect: lower noise and distortion, a better asynchronous USB interface, improved 'UltraLock 2' jitter isolation and a new innovation of internal headroom above 0dBFS to accommodate inter-sample peaks. The latter is the specific subject of this review.

Benchmark audio full#

The more hi-fi orientated DAC1 HDR enhances the DAC1 Pre's facilities and features with full remote controllability, including a motorised ALPS volume knob.Īlthough the DAC1 product line remains in production, a newer DAC2 model is now available, in both digital input only (DAC2 D) and remote-controlled full preamp (DAC2 HGC) versions. For example, the DAC1 USB added a 24-bit, 96kHz USB input, while the DAC1 Pre introduced a stereo analogue input and upgraded audio electronics. Technology marches ceaselessly onwards, though, and the DAC1 has been enhanced over the intervening years. I was so impressed I bought one and still use it regularly as a 'benchmark' for evaluating other manufacturers' converters! This technique, which Benchmark called 'Ultralock', was introduced in the DAC1 D-A converter and headphone amplifier, which I reviewed in SOS July 2005. The company were amongst the first to adopt a very clever jitter-busting technique which uses sample-rate conversion to isolate inherent interface jitter from the converter's own independent local clock, while also running the D-A at the optimum high sample rate. How have they raised the standard this time?īenchmark Media Systems, based in New York State, have established an enviable reputation for their high-quality headphone amps, preamps and digital converters. When it comes to D-A conversion, this company is called Benchmark for a reason.