d's an awesome feature, as well

One very nice feature is you can jack in your iphone/samsung/tablet or whatever source in the back of the amp and plug in your headphones.

Nice features are the parametric equalizer with changeable frequencies for the low, mid-low, mid-high and high knobs

This is an AWESOME feature

750 has some cool features like a separate compressor dial that would

Very powerful with great features and so small and light!