No doubt that Audio Research makes some impressive preamps and there are references on various web forums of people using AR preamps with Mac amps with good results. However, this does not match my experience.
To the OP, when you do your research, make note of the input impedance of the MC452. At 22k ohms, it’s pretty close to the minimum load recommended by AR for most of their preamps. Also notice the 452 requires 4.2 volts on its balanced inputs to reach its rated power output. With a typical Audio Research preamp, this might mean you could end up cranking the volume higher than you expect for normal listening but finding the sound balance pretty thin; lacking in dynamics and bass slam, depending on your source. At least, this is what I have experienced.
Both the tube and solid state Mac preamps have fairly low output impedances and robust voltage outputs . Some also have decent phono stages, IMO, with adjustable loading. Try before you buy would be good advice in all cases but is especially in this one.
To the OP, when you do your research, make note of the input impedance of the MC452. At 22k ohms, it’s pretty close to the minimum load recommended by AR for most of their preamps. Also notice the 452 requires 4.2 volts on its balanced inputs to reach its rated power output. With a typical Audio Research preamp, this might mean you could end up cranking the volume higher than you expect for normal listening but finding the sound balance pretty thin; lacking in dynamics and bass slam, depending on your source. At least, this is what I have experienced.
Both the tube and solid state Mac preamps have fairly low output impedances and robust voltage outputs . Some also have decent phono stages, IMO, with adjustable loading. Try before you buy would be good advice in all cases but is especially in this one.