The fine tuners alone are worth the extra money

EACH string has a fine tuner installed which makes tuning the instrument to perfection a snap!Downsides for this harp-the stock setup for the chord buttons is clumsy and not very practical.

but I still need to tweak the little hex head setscrews of the fine tuners when I play it out

The Os45ce (capitalization is only difference) has the tuner, equalizer, battery compartment, fine tuners and a case.

But it's a very well-made instrument in my opinion, and I'm ordering a new one with the fine tuners.

The tuner is a real blessing in an instrument for which tuning is such a task

This model does not have fine tuners or equalizer, just a passive (no battery required) pickup.

This harp does not have fine tuners, but that hasn't been an issue.