Nobody brings the monstrous riffcrush better than Black Cobra, who follow up their first pair of albums on At A Loss with Chronomega, their third album and first for their new label home at Southern Lord. This ultra-amped drums/guitar duo, whose members have previously cracked skulls in 16, Cavity and Acid King, continues to serve up their sludgy, ferocious thrash in huge bottom-heavy chunks of juggernaut heaviness, and the riffs are so big, so crunchy on these eight new songs that you never wonder where the bass guitar went to. Man, this album is riff-fucking-city, and every song is weighted down with at least one absolute crusher. The guitars are tuned seriously low, down to teeth-rattling frequencies, the snarling vocals are tough as nails, and the drumming is fluid and furious, a pounding battle-drum assault the roils and churns beneath the grinding riffage on songs like "Negative Reversal", "Zero Point field" and the title track. Black Cobra still remind me of a super-metallized version of Karp crossed with the sludgy thrash metal of High On Fire, and their sound hasn't changed on Chronomega, there's still some of that spacey atmosphere that creeps into some of the songs just like with the earlier albums, some swirling vocals here, trippy melodic leads there, weaving around the often trancey riffs and pummeling low-end heaviness, and closer "Nefarian Triangle" has some spacey Middle Eastern-tinged psych guitar that reminds me of something from Warhorse's As Heaven Turns To Ash. Supremely brutal metal, and clearly a must-get for fans of stuff like High On Fire, Melvins, Karp, Baroness, Torche and Zoroaster.