A good multichannel headphone amp can be one of the most valuable studio tools, and the Samson QH4 proves you don’t have to spend an arm and a leg to get one. This extremely utilitarian 4-channel headphone distribution amplifier offers many of the same features Sweetwater engineers look for in high-end studio models. Balanced inputs ensure low noise and distortion, while 1/8″ stereo aux I/O lets you daisy-chain multiple QH4s together. Mono summing also makes this headphone amp perfect for single-ear monitoring and checking phase cancellation when you mix, and there’s a master mute switch to save your ears when you need to make connection changes on the channel you’re monitoring.