Just unearthed some copies of this now out-of-print cassette from the British improv drone/sludge outfit Master Slave, a trio that features Mike Vest from UK drug-sludge heathens Bong and the crushing avant noisecore outfit Ultrashitinferno. Alongside fellow member Pete Ryde and guest bassist Dave Terry from Bong, Vest unleashes a crushing psychedelic din of wailing wah-drenched guitar, rumbling amplifier noise and grinding feedback across "Amplifier Graveyard", a live jam that was recorded in Glasgow at the underground music venue 13th Note in early 2010. The band drowns the listener in a suffocating fog of low-fi acid sludge and freeform space rock noise, a massive twenty-five minute drone-spasm that sort of resembles one of Skullflower's most wah-damaged jams circa Orange Canyon Mind, but tethered to a punishing low-end heaviness that invokes a more sinister, doom-laden presence, a crushing bottom-end churn that feels more like something seeping out of an old practice tape from Boris or Earth circa 1995. The murkiness of this recording just adds to the mind-melting quality of Master Slave's oppressive roar as far as I'm concerned, allowing the band's huge caveman riffs to fully dissolve into the undulating waves of acid-fried amp gunk and soaring lysergic wah-wah abuse that is splattered all across this tape. A maelstrom of monstrous freeform psychedelia rushing out of the bowels of hell, violent eruptions of guitar noise and low-end rumble cast against the apocalyptic glow of a meat-red horizon. Fans of Bong's dope-fueled low-end rituals won't find any of that band's glacial riffage here, but there's a similar energy in Vest and co.'s assault on the senses, in their relentless onslaught of crushing amplifier volume.

Released in a limited edition of fifty copies.