Concur with the Chang Lightspeed recommendation: probably the 2500 would do the job just fine for an integrated, but if it's a high output unit then maybe go for a 6400. Stereophile recommended, neutral character, contains integral MOV line-transient protection. Used-priced on Audiogon it's a no-brainer.
Try the amp with upgrade cord both ways - straight into the wall & then through the Chang, even trying out the different levels of filtration (digital level filter vs. analog level filter). The 2500 MKI's two digital outlets are unfiltered yet are transient protected, the 2500 MKII's digital outlets are filtered & the analog outlets are filtered somewhat more, all with transient protection.
Try the amp with upgrade cord both ways - straight into the wall & then through the Chang, even trying out the different levels of filtration (digital level filter vs. analog level filter). The 2500 MKI's two digital outlets are unfiltered yet are transient protected, the 2500 MKII's digital outlets are filtered & the analog outlets are filtered somewhat more, all with transient protection.