ACI 600

The ACI 600 is an integrated platform combining a high dynamic range DAC, precision volume and system control, ethernet streaming, a programmable phono stage and headphone circuitry. Ultra-low noise amplification provides an all-in-one audio solution.

The ACI 600 manages audio source and control functions through the control dial on the top of the unit, the custom IR remote control, or an iPhone or iPad using the custom iOS app. Its fully programmable display shows system status, source and volume, as well as programming functions and streaming metadata.

All source inputs are asynchronously re-clocked into the fully balanced advanced segment DAC, which measures below 0.0005% distortion and provides 127dB of dynamic range. Bel Canto’s custom ULN master clock circuitry removes the source clock to reduce jitter and distortion while preserving the audio signal from each source.

Asynchronous ethernet provides access to streaming services and music stored on a NAS drive or a multi-terabyte independent drive connected to the USB-A input. Bel Canto’s proprietary asynchronous ethernet and USB-A inputs support high-resolution files up to 24bits at 192ks/s, MQA and DSD64. The SEEK control app provides full server function with wireless iOS control.

Asynchronous digital SPDIF AES, RCA and Toslink inputs all operate at 24/192Ks.

The MM/MC phono section is a low-noise, low-distortion circuit with programmable settings for cartridges ranging from high-output MM models at 2.5mV to 5mV, to low-output MC models at 0.25mV to 0.5mV.

The line-level analogue input can also be programmed to gain-match analogue sources. The line output can be connected to a powered subwoofer.

The rear-mounted headphone jack connects headphones to a dedicated amplifier with a high-performance buffer stage capable of driving loads down to 32 ohm. The main control adjusts the output level and selects either the headphone or main speaker output, allowing the headphones to remain connected.