Description
The Quantum ES 4 is a 4-in / 4-out USB-C audio interface designed to capture professional quality recordings in home and project studios. It provides 24-bit 192 kHz conversion and low-latency performance for tracking, overdubs, and stereo mixes. The interface includes a perpetual license for Studio One Pro to get you recording immediately.
At its core are four all-new MAX-HD mic preamps offering up to 75 dB of gain for clean microphone capture and low noise. Front-facing instrument inputs were co-developed with Fender engineers to provide optimized impedance and feel for guitar and bass. An Auto Gain function and illuminated push encoder simplify gain staging and monitoring during sessions.
Technical performance includes 24-bit audio depth and a wide digital dynamic range with supported sample rates up to 192 kHz. Line and headphone outputs deliver flat frequency response and low distortion across the audible band. Headphone outputs and balanced main outputs provide professional metering and consistent levels for mixing and monitoring.
Connectivity is centered on a USB-C port with custom low-latency drivers and low-noise converters for minimal round-trip latency. Inputs include XLR combo connectors and dedicated instrument jacks, while outputs include balanced 1/4″ TRS main outs and two 1/4″ TRS headphone outputs. Universal Control and Studio One Pro integration allow remote preamp control and metering from desktop, tablet, or mobile devices.
Typical use cases include multi-mic tracking, direct guitar or bass recording, editing and mixing, and content creation for streaming or podcasting. The interface supports high-resolution recording for detailed capture of acoustic instruments and vocals. Its compact footprint and robust I/O make it practical for mobile sessions, desk-based production, and rehearsal capture.
Built with a metal chassis and straightforward top-panel controls, the Quantum ES 4 is easy to set up and operate. LED metering provides clear visual feedback while the Auto Gain and dedicated controls speed workflow and reduce distraction. Combined with low-latency drivers and a perpetual Studio One Pro license, it offers a complete recording solution that balances quality, control, and portability.
Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.
UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations. UPS Ground does not deliver on Saturdays, Sundays or Holidays.
USPS Priority Mail/USPS Express Mail
For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.
Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.
International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.
Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.
We Offer A 30-Day Money Back Guarantee:
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.
Refunds:
Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.
Exchanges:
If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.
No Returns/Exchanges on the following:
- TVs and monitors 20" and larger
- Special Order merchandise
- Any item indicated on the website as non-returnable
For more information see our official Return Policy
