@yakbob
I think the McIntosh's flagship AV preamp surround processors (eg MX150, MX151, or MX160) share very similar analog audio circuitry as the McIntosh stereo preamp such as the C46 preamp, not the McIntosh's entry level AV processors such as the MX120, MX121 or MX122..
I think the McIntosh's flagship AV preamp surround processors (eg MX150, MX151, or MX160) share very similar analog audio circuitry as the McIntosh stereo preamp such as the C46 preamp, not the McIntosh's entry level AV processors such as the MX120, MX121 or MX122..