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Key Features
- For Producers, Musicians, Creators
- Bus/External Power
- Mac/Windows/iOS/Android
- 4 XLR Mic/Line Ins, 2 1/4" Hi-Z Ins
The culmination of nearly 30 years of design experience, the PreSonus Quantum ES 4 is a 4x4 USB-C desktop audio interface ideal for producers, musicians, and creators looking for high-fidelity audio for the studio or live onstage. The ES 4 features four high-definition MAX-HD mic preamps with +75 dB of gain, ideally suited for today's most popular microphones. Guitarists and bassists will love the front-facing instrument inputs, which were codeveloped with Fender engineers. High-performance 24-bit / 192 kHz converters let you hear and capture audio with stunning clarity. Use the Quantum ES 4 to record to a Mac/Windows computer or on your iOS/Android phone or tablet.
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Does it require an external power supply when usin
Does it require an external power supply when using it with and iPad pro?
Yes, the PreSonus Quantum ES 4 USB-C Audio Interface will require use of an external power supply when connected to an iPad Pro, as mobile devices often cannot provide enough bus power through a single USB-C connection. You will need to use a 5V DC, 2.6A (approximately 13W) power source connected to the aux port on the ES 4, which can be a portable USB battery power bank or wall adapter.
Date published: 2026-03-01