Those who favor minimalistic tech will love the Titan Concrete Bluetooth Speaker ($299). Constructed from durable and hard wearing concrete, this block-style speaker is hand made in Budapest and has both Bluetooth functionality and a 3.5mm jack for direct connections. The concrete build promises low resonance and zero sound coloration while also being visually unique based on the pigments and minerals used in the mix. The Titan features DC power, a frequency response of 50 – 20,000 HZ, a rear bass-reflex port, and two 75mm full range drivers. The Titan Concrete Speaker is a stylish addition to any home.