ATH-M50X + HM-4

This bundle pairs the ATH-M50X studio monitor headphones with the Rockville RHPA4 four-channel headphone amplifier, built for group monitoring around a single, well-regarded reference pair. The ATH-M50X uses 45mm large-aperture drivers in a closed-back, circumaural design for deep, accurate bass response and strong sound isolation, with 90-degree swiveling ear cups and detachable cables in three lengths for studio or travel use.

The RHPA4 takes a 1/4-inch or 3.5mm input and splits it across four outputs, each with independent volume control, and because every output runs two parallel headphone jacks, the amp can power up to eight pairs of headphones from a single mix. USB power lets it run from a computer, wall adapter, or power bank. Together, the headphones and amp suit a mixing team, small studio, or classroom where more than one person needs to hear the same accurate reference at their own volume.