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Compact silver desktop audio interface with front knobs and instrument input

Presonus

Presonus Quantum ES 2 2x2 24-Bit 192 kHz USB-C Audio Interface

SKU CH-729F-9SM21

A 2×2 USB-C audio interface delivering 24-bit/192 kHz resolution with MAX-HD preamps offering 75 dB gain and a Fender co-developed instrument input

  • Pristine recordings with 24-bit / 192 kHz high-performance converters
  • Near-zero lag from custom low-latency driver during sessions
  • Transparent capture via all-new MAX-HD preamps with +75 dB gain
  • Guitar-ready front input co-developed with Fender for optimal tone
  • Perfect levels instantly with Auto Gain button and illuminated encoder

Designed for independent musicians

The Presonus Quantum ES 2 is a 2x2 USB-C audio interface built for self-produced recording. It delivers pristine sound quality through high-performance converters operating at 24-bit / 192 kHz resolution. All-new MAX-HD preamps provide a +75 dB gain range for transparent capture with a wide range of microphones.

Thermals noise and power draw in normal use

The bus-powered USB-C design draws power directly from the host computer, eliminating the need for an external supply. With no moving parts or active cooling, the unit runs completely silent during typical tracking and monitoring sessions. Low-latency driver architecture keeps round-trip latency minimal without taxing system resources.

Sustained load behaviour under extended sessions

Custom-designed drivers maintain ultra-low latency performance consistently across long recording sessions. The Auto Gain feature sets optimal input levels quickly, reducing the need for manual adjustment during extended use. Bright LED metering provides continuous visual feedback on signal integrity without drift or instability.

Highlights

  • Pristine recordings with 24-bit / 192 kHz high-performance converters
  • Near-zero lag from custom low-latency driver during sessions
  • Transparent capture via all-new MAX-HD preamps with +75 dB gain
  • Guitar-ready front input co-developed with Fender for optimal tone
  • Perfect levels instantly with Auto Gain button and illuminated encoder

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the Quantum ES 2 and what step do people often miss?

Connect the USB-C cable to your computer, install the custom low-latency driver, then press the Auto Gain button on each channel so the illuminated push encoder sets the correct level for your microphone or instrument.

What maintenance or replacement will the Quantum ES 2 need later?

The unit has no user-serviceable parts; keep the USB-C port and front instrument jack clean, and update the driver when PreSonus releases new versions to maintain ultra-low latency performance.

What limit appears first during long recording sessions with the Quantum ES 2?

The +75 dB gain ceiling on the MAX-HD preamps is the first hard limit; signals that need more gain will require an external boost before the interface.

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