"What has transpired over the past several days has been emotionally overwhelming and difficult to comprehend," lead singer Ben Hopkins writes.
The band has also been dropped by Salty Artist Management in the wake of sexual assault allegations against Ben Hopkins.
Opening act T-Rextacy also announced that they would be leaving PWR BTTM's forthcoming US tour.
"I found it causes this reaction in people—it's an instant thing."
The ZX Spectrum is a relic, tech trash by yesterday's standards, but the legacy of its leading magazine is immeasurable.