Just managed to snag a pair off classifieds! The 660s were my first of the 600 series, coming from the Hifiman Arya V2 as a main. While I love the V2 their sibilance was too much, and I couldn't get them to agree with my head comfort wise. In hindsight, they're also quite thin in the midrange...

Having owned the Amiron and still using the 1990s daily. If you want a warmer, easier to listen to headphones grab something like an HD 650 or 660s over the Amiron. The Amiron manage to be warm and muddied at times while also being hot to listen to, my opinion of course. HD 6XX series is more...

Appreciate the info, sounds like it'd be right up my alley. I'll take a look at the 900 Pro X though I'm ok with the 1990s. As said they're exclusively for my keyboard/mixing purposes and they handle that really well.

So what's the consensus these days on 660s vs 660s2? The 660s have become my main headphone. The 1990s are great as an instrument headphone, but for music it's too treble hot. I sold off my Arya v2 for being sibilant and uncomfortable to wear. 660s is a good level of warmth and treble that...

You tell us what YOU think when you hear it 😉 lol

1990 is really energetic, the balanced pads kinda raise the mids up but IMO they get muffled as opposed to warm. The Amiron is warm and detailed but more energetic like the 1990. Jazz and classical, acoustic stuff sounds great on the amiron

I'm thinking you'd be better off with some of Beyer's warmer headphones. Amiron Home or the T1

Give it 2 or 3 days first. You're used to the warm signature as opposed to the more technical 2/64. Higher resolution, better imaging and spacial representation. It's truly a treat

Lol you might want to read through this thread about the whole "it doesn't change the sound thing". I've found them to sound better than the stock cables my headphones came with I just ordered a pair for my 1990s and my 660s

I think Arya in general is quite V shaped. Very apparent when you're listening to warmer headphones and switch over to Arya

Amiron has to be one of the strangest headphones I've heard. It manages to both be warm and musical while being unbearably hot at times. With some artists it comes together really well but with many it doesn't.

Highly unusual. They are not weak in clamp force whatsoever

I find MCB filter sounds smoother. Like going from a stepped sinewave to a smooth one, tough to describe but it's more RAW

I like Audiophile Ninja myself. I believe they also ship to Europe

@SolaVirtus Might have one for ya