CLEARANCE Mackie HM-4 4-Way Headphone Amplifier
The ultra-compact HM-4 4-Way Headphone Amplifier features a 1/4" stereo input and four 1/4" headphone outputs with individual level controls. Perfect for studios or even at home when up to four people want to listen together.
Key Features
- Share a single stereo source with up to 4 pairs of headphones
- Individual level control for each output
- Powered via the included 12v AC adapter
- Built-Like-A-Tank™ construction
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Mackie HM-4 Manual 
California Prop 65