Used Mackie HM400 Headphone Amp

Used Mackie HM400 Headphone Amplifier in great condition. This 4-channel rackmount amp delivers up to 12 headphone outputs, each with independent level control, 3-band EQ, and stereo/mono operation. With 1/4" TRS inputs and outputs, it's perfect for studio monitoring or stage use. Rugged, reliable, and clean-sounding, the HM400 supports up to three headphone mixes simultaneously and ensures clarity at high volumes. Ideal for musicians, engineers, and producers seeking dependable headphone distribution.