Antelope Audio Pure2 Mastering AD/DA Converter and Master Clock

Antelope Audio Pure2: Mastering-Grade Conversion and a Studio Master Clock in One

The Antelope Audio Pure2 is a two-channel mastering AD/DA converter and studio master clock built for the most demanding stage of the signal chain. It converts at 24-bit/192 kHz through a reference-grade analog-to-digital section and a dual-DAC output architecture, with an oven-controlled crystal oscillator and 4th-generation Acoustically Focused Clocking managing jitter. A stepped relay volume attenuator with 0.05 dB precision and full digital I/O make it equally at home as a mastering round-trip converter and a facility clock source. Mastering engineers use it to move audio in and out of the analog domain without losing a shade of detail. It is the converter you trust with the final print.

Reference-Grade 24-Bit/192 kHz AD/DA

The Pure2 pairs a premium reference-grade analog-to-digital converter with a dual-DAC output stage for transparent 24-bit/192 kHz conversion in both directions. A dual-DAC architecture uses two converter cores per channel to lower noise and distortion, revealing the finest detail in a master. Mastering engineers rely on this transparency when routing a mix out to analog processors and back, because any coloration at this stage is permanent. The converter is designed to add nothing and take nothing away.

OCXO Clocking With 4th-Gen AFC

An oven-controlled crystal oscillator (OCXO) provides an extremely stable timing reference, and 4th-generation Acoustically Focused Clocking actively manages jitter on top of it. An OCXO holds its temperature, and therefore its frequency, far more precisely than a standard crystal, which is the foundation of low-jitter clocking. Low jitter preserves stereo imaging and high-frequency clarity, the qualities mastering engineers listen for most closely. This clocking pedigree is the core of Antelope Audio's reputation.

Doubles as a Studio Master Clock

Beyond conversion, the Pure2 serves as a master clock, distributing its reference through multiple word clock outputs and locking to a 10M atomic clock input when even greater stability is required. In a studio, every digital device should slave to one master clock so the whole system stays sample-accurate. Using the Pure2 as that master brings its OCXO stability to every connected converter and interface. Locking to a 10M reference elevates the entire facility to atomic-clock precision.

Stepped Relay Attenuator With 0.05 dB Precision

Monitoring level is set by a stepped relay attenuator with 0.05 dB precision rather than a conventional potentiometer. Relay-switched attenuation guarantees that the left and right channels stay perfectly matched at every level, preserving the stereo image no matter the volume. For mastering, where tiny level differences can shift the perceived balance, this precision is essential. The engineer can trust that what they hear reflects the mix, not a channel imbalance.

Combo XLR/TRS Inputs and Balanced Outputs

Two combo XLR/TRS inputs accept sources at +20 dBu, and the unit provides balanced XLR main outputs plus a 1/4-inch TRS monitor pair. The high +20 dBu input level suits professional analog gear and preserves headroom through the round-trip. Balanced connections reject noise over long cable runs, keeping the mastering chain quiet. This layout drops cleanly into an analog mastering insert path.

Full Digital I/O: S/PDIF, TOSLINK, AES, and USB

The Pure2 offers S/PDIF, TOSLINK, AES, and USB digital connectivity, letting it interface with any DAW or digital device in the chain. That range means it can serve as the studio's primary converter over USB or slot into an existing digital infrastructure over AES. Multiple formats also make it a flexible clock and conversion bridge between disparate gear. A mastering room can wire it however the workflow demands.

Who the Pure2 Is Built For

Mastering engineers gain a transparent analog round-trip converter and a facility-grade master clock in a single unit. Studios upgrading their conversion get OCXO clocking, dual-DAC output, and precision monitoring that reveal detail earlier converters obscure. Audiophile listeners and comparison shoppers will value the reference-grade DAC and 10M-lockable clock at the heart of the design. It suits anyone whose work depends on hearing exactly what is on the master.