Unfortunately, while the WES was superb with sweet acoustic music, it tended towards a bit sloppy when faced with driving dynamic tracks, and slightly confused with large orchestral works. Running the volume control up only served to make matters worse.
I'll recommend the Woo WES for all those who love the lush sound of tubes. Its creamy delivery combined with the brilliant articulation of the SR-009 is a great combination for acoustic chamber and jazz ensembles. But if your tastes run the gamut into driving rock, EDM, and large orchestral works the improved driver control of the next two amps might better suit you.