The F600EQ acoustic-electric guitar offers all the great features of the F600EQ with an added cutaway body, and an S.R.T pickup system complete with 3-band equalizer, adjustable mid-range, and a built-in chromatic tuner. Played acoustically or plugged in, the F600EQ sounds fantastic! Quality materials, outstanding construction, and stunning value make the F600EQ a great choice for any player.S.R.T. Pickup SystemYamaha's proprietary SRT pickup design uses individual elements for each string to give an ultra-clear, ultra-wide bandwidth signal with far better dynamic response and tonal accuracy than a regular, ribbon-type piezo pickup.SYSTEM66 Preamp SystemSystem 66 features an under-saddle SRT pickup developed by Yamaha. Controls include a 5-band equalizer, an adjustable mid-range frequency control, and a precision .