They struggle to drive my Sennheiser HD 6XX Headphones (650's but newer and better).

I also wish the headphone out preamp was a bit beefier. The only nit picks I have are, I wish it didn't need a separate power cable, having to take two spots on my macbook pro is rough. Haven't gotten too much out of the vintage knob /button myself yet but will be playing with that more. The build quality is top notch, feels built to last like a real nice studio piece. The pres are nice and clean, whether you're direct instrument in or through XLR and a mic. Haven't tried vocals yet but I'm sure it'll do well there too. Makes me have very little I need to do to bass or guitar dynamics wise. The 1176 that's built into it is really quite killer. The holiday sale that included the plate reverb, a drawmer plugin, and the LA2A really sealed the deal for me (a bunch of other stuff too but those stood out the most to me). Between the looks and the idea of an 1176-ish built into my interface I was tempted. I'll admit half the reason I replaced my presonus audio box with this was the general vibe. Perfect home studio interface, don't sleep on the built in 1176!

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