Rack based hardware Sampler.

Some features: - 64 digital 6-pole filters (over 20 different types: low, band, high pass, notch, EQ, vocal, flange, phaser, and multi). Built in 48 track sequener. 24-bit dual stereo effects processing (four sub mixes per effect) - Keyboard type accepts PC-AT style ASCII keyboard

The E-Synth is just like the E4K (E4X) but it comes with the E-Synth module standard.