The problem is Mcintosh monoblocks are not very resolving so your dealer is using bright power cables on them. 2m easier to resell. Get some better amps from Audionet before power cables. Also the fact your dealer would sell you that low of a gauge thickness level power cord on monoblocks tells you that that is not a very caring dealer having a fiduciary duty to protect your sound system because that’s the worst cable for monoblocks and really used more on preamps or dacs.