Such changes are, in fact, a known quantity that expert designers like Devore account for and work with when designing. So speaker and amp designers and purveyors like John Devore and Peter Qvortrup (Audio Note) aren't all lying and recommending break-in so they can sell you crap! They know things change a bit sonically from new and, in some cases, drastically so. With amps, it may be capacitors charging and discharging/things coming up to operating temperatures enough times, etc. Just do biceps curls with your 30lb fitness band for a year, then tell me if it still measures exactly the same as when you got it from Bezos. It's just mechanical suspensions loosening a bit, as would be expected from repeated flexing of anything that hadn't been flexed much (or at all) before. To go off on a bit of a rant here, it's certainly not a 'marketing trick' or 'your ears breaking in' when say a speaker goes from sounding like it has zero bass and muted highs to having solid bass and extended highs, as was the case with my Xavian Perla Esclusiva monitors after 40 or 50 hours or with my B&W 606 S2 Anniversary's (initially) rough highs and muddy bass.
#Unison reasearch plus
Now despite what some corners of the YouTubes may say, 30 plus years of audio experience with all manner of gear (and more than 150 pairs of speakers and counting) has shown me that while the period of time varies widely (due to listening volume preferences, etc.), it's a rare item that doesn't benefit from at least some break-in period sonically and the Unico 150 was no exception. The new distributor Boris at JB Distributors informed me my Unico 150 was a brand-new unit and, as such, might require a bit of break-in.
#Unison reasearch driver
My Unico 150 arrived silver-clad, and an interesting soft silver it was, like something Benjamin Moore would name 'Soft Wolf Silver' or 'Clouds' Lining.' Sporting a Hexfet output stage, a couple of ECC83's in the input stage, and a pair of 6H30 tubes in the driver stage, this big boy beef-eating hybrid tube/solid-state amp also comes in boss black. My recommendation is once you find a spot for it, leave it there. And fitting it in my two-seater car for shipping?! Man. I hurt my back (mildly) every single time I moved it, even if I bent at the knees.
I work out, eat right, follow celebrity Tiktok advice for the best collagen powder protein shake and all, but it's damnably heavy feels like 60 pounds! Talk about functional fitness. The solid-state/tube hybrid Unison Research Unico 150 is the most challenging amplifier I've ever reviewed. Unison Research Unico 150 integrated by David Abramson
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