Mackie HM-4 4-Way Headphone Amplifier
![Mackie HM-4 4-Way Headphone Amplifier Mackie HM-4 4-Way Headphone Amplifier](https://www.review-rating.com/image/cache/products/new/48064484359477-mackie/25118859932201-250x250.jpg)
UPC's:
MPN's:
91%
100%
WORKS A CHARM FOR ME
Dec 18, 2019
I have my laptop headphone out running into a cheap little boom-box for decent sound. The volume was too low. Got this and it boosted my volume just GREAT.
Reviewed on B&H Photo Video
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