This is Power Metal played in the European style with a nice influence from US Thrash/Speed Metal felt throughout.
The vocals are a little grittier than most European-influenced bands and this falls in line with the Thrash influence. The singer does have a good voice though and is reminiscent of the singer of Metallica in some ways, but thankfully not overly so.
The band are comfortable playing chuggy, Thrashy riffs as well as more stirring, melodic ones. Overall the album is quite riff-heavy and the guitars have a nice bite to them.
Distant Sun’s style is kind of late-90s, combining the Power, Heavy and Thrash Metal styles of the time into a kind of Blind Guardian/Testament/Iced Earth/Annihilator melting pot. Add to this a bit of an 80s Thrash influence too and you have Dark Matter.
The songs are a good combination of these styles and frequently result in tracks that are both high-octane and catchy.
I firmly recommend this and suggest you check them out.