Casio’s HT series might not have brought before the prettiest of devices, but they were powerful for sure! In its legacy, Casio was known for producing portable keyboards since the beginning of the 80s. The 1987 released HT series were a group of digital synthesizers, of which the HT-6000 was the flagship, packing 4 DCO’s with 64 waveforms based on Casio’s “Spectrum Dynamics”-synthesis. Its digital core gives this noble-keyboard often enough a very chip-tunesque sound aesthetic. It can sound rather harsh, rich in overtones and very digital at times. But once its analog filters, detune and ring modulation come into play, it can transform to sounding very organic, rich and lively.Â