Are they headphones that turn into speakers or speakers that turn into headphones? Either way, they are extremely slick.
MartinLogan Grotto 12 ($2,299) & 15 ($2,799) subwoofers deliver 2kW peak power, triple hybrid woofers and precise DSP. The new Grotto 12 and 15 subwoofers sit above the Abyss models in MartinLogan’s ...
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