Expand Your Versatility with the Mackie HM-400 4-Channel Headphone Amplifier

Perfect for studios, practice spaces, quiet stages, and more, the HM Series offers everything you need whether it is just splitting a single signal to your band, or more complex headphone distribution.

Flexible Headphone Amplification

Whether you need to expand your home studio headphone monitoring capability or add robust cue mix distribution, the affordable HM Series offers the sound quality, reliability, and flexibility you need to expand your setup.

The HM-400 delivers flexible, robust headphone distribution for studios, practice spaces and more.

Excellent Sound Quality

Premium analog circuitry and design delivers an ultra-low noise floor and high headroom.

Ultra-Flexible

From a simple yet effective way to split a single stereo signal out to four pairs of headphones to robust headphone distribution, the HM Series offers a wide range of options to suit your needs.

Built-Like-A-Tank

With a heavy-gauge steel chassis, long wear potentiometers and switches, the HM Series is built to last.

Specifications

• Total Headphone Outputs: 12
• Aux Inputs: Per Channel
• Input Connections: L/R XLR, TRS
• Output Connections: 12 x 1/4" TRS, 2x L/R TRS Pass through

Manufacturer: Mackie
Model: HM-400
SKU: I497260-N-5-WHXX
UPC: 663961054071

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.