The 4B is a great amp, but they are getting old and the capacitors will fail at some point.
For me, I would buy a used PS Audio S300. There is one on US Audio Mart for $950 with 1 year left on the warranty. 300w/ch in to 4 ohms, which is right at the sweep spot for 1.7i.
For me, I would buy a used PS Audio S300. There is one on US Audio Mart for $950 with 1 year left on the warranty. 300w/ch in to 4 ohms, which is right at the sweep spot for 1.7i.