Hi all iv been thinking of getting a dab tuner. in a second hand shop near me they have 2 for sale one is a denon tu- 1800dab the other is a teac T-R650dab. The denon one will cost abit the the tea. It there any difference between the 2 tuners. is it a dab tuner only as good as the quality of the music being brobroadcast. Thanks in advance