Pass INT-25 better than Wilsenton R8?

considering amps a vs b ... which better or worse....  always always depends on the situation, associated gear, listener taste

that been said. i would say 8 or 9 of 10 experienced audiophiles and music lovers asked to choose between the 2 would choose the pass unit - it is not a tubed unit but the build quality, pedigree of the designer and company behind the product, and outright sound quality would be superior in most circumstances

@travisg If it is a brand new INT-25, and you do not have 200hrs on it yet, give it time and see if anything changes. I know this is the case with the amps up to ~300hrs.  I'm not as familiar what occurs on integrated units, others may chime in here to validate burn-in / break-in for you. Transformers, caps, and more, let it play.    

@travisg, As suggested above, your Pass INT-25 integrated amplifier needs ADDITIONAL break-in time before you can judge its sound quality.  I suggest you contact your retailer, or PASS LABS, to find out the number of hours required for break-in.