Rather than opting for a “classic integrated” amplifier, you can choose separate monoblock power amplifiers, like the Boulder 1151.
If you prefer to have full control over your hi-fi system, the best choice is often a setup with as many separate components as possible. This typically involves a preamplifier and a power amplifier. While a stereo power amplifier is a common choice, there’s nothing stopping you from going for a pair of monoblocks—or even more if you’re setting up a surround system for a home cinema. If that’s the direction you want to take, the new Boulder 1151 mono power amplifier might be worth considering. It delivers a peak output of 350 watts at 8 ohms (600 watts at 4 ohms and 750 watts at 2 ohms). The unit features a fully balanced input and an equally balanced output stage. Upgrades over its predecessor include an improved protection circuit to safeguard against potentially costly damage.
An official price for the Boulder 1151 isn’t listed on the product page, but it is available here for $23,500. We assume there won’t be that much variation in pricing elsewhere.