” As I mentioned previously, there are different classes of amplifiers by design but I’m referring here to the different classes in terms of performance. The GamuT D-200i is a high-performance piece of kit that belongs in the upper echelon of high-end gear [and so good, I purchased the review unit]. It’s fair to say that the D-200i shares the GamuT house sound which is characterized by an open, airy sound with very good detail. It’s well balanced from the treble to the bass. It has an uncanny tube-like ability to present an almost holographic sound stage without edge or glare.