Metal saddles on an ABR-1 generally deliver more treble, less midrange and perhaps not quite as much sustain. Having carried out several parts-swapping experiments on this type of instrument, we’ve found that nylon saddles play a big role in producing this warm and fat tone. This is a naturally loud and full-bodied guitar, with impressive sustain compared to some other ES-330s and Casinos of a similar vintage that we’ve encountered. Since Gibson and Epiphone had already been making some of the world’s finest archtop instruments for decades, our expectations for the Casino’s unplugged tone are high.