Version B has a smaller DSP and it's not a DSP amplifier like version E. Also I haven't found a software link so I'm not sure if it's tuneable at the moment?
I think this is the version B DSP, in which case it is an amplifier and is software tuneable. US $72.0 17% OFF|Car Intelligent Audio Sound Processor System 4X50W Car Audio Processing Amplifier 15 Band EQ DSP Equalizer Precision Tuning|Multichannel Amplifiers| - AliExpress