Best Seller | Mackie HM-4 4-Way Headphones Amplifier HM-4 Authorized Mackie USA Dealer! Read 13.00 User Revi... Free Shipping! Mackie HM-4 4-Way Headphones Amplifier Distribute Signal to Multiple Headphones, 1 x 1/4" TRS Stereo Input, 4 x 1/4" TRS Stereo Headphone Outputs, Dedicated Level Control per Output, Power Status Indicator, Compact Heavy-Gauge Steel... ... more Mackie HM-4 4-Way Headphones Amplifier HM-4 Free Shipping! Mackie HM-4 4-Way Headphones Amplifier Distribute Signal to Multiple Headphones, 1 x 1/4" TRS Stereo Input, 4 x 1/4" TRS Stereo Headphone Outputs, Dedicated Level Control per Output, Power Status Indicator, Compact Heavy-Gauge Steel... | | $39.99 FREE shipping go to store |