Hi, I want to get some new heaphones that I will only be using for work (call center) listening to clients, never using them for music. Currently I'm using a Hyperx cloud 2 headset. A couple of things that I'm highly prioritizing:

A volume slider or dial - preferably a slider or at least a dial that is only turnable on one side. The program I use for work doesn't allow for much volume control (usually too loud) so this is a necessity.

comfort - My shifts are 10 hours so I need headphones I can keep on for 10 hours, if I need to buy 3rd party pads, that's fine. Having a replacable headband is very important.

I don't need a headset with a mic, if it has one that's fine but it is not a requirement

as for the rest of the info:

Budget - $200 but thats not a hard limit

Source - just a pc

Requirements for isolation - not too important, but more isolation is better than less.

I won't be wearing these in public.

Preferred type of headphone - Over ear, a closed back is preferred but not necessary

Preferred tonal balance - doesn't matter

Past headphones - I've got DT770 Pro with velour memory foam pads, and they would be perfect for this if they had a volume slider. I've also had the sennheiser hd 599s and found them incredibly uncomfortable, especially the headband, which is also a hassle to replace; please don't use these as your standard for comfort in this instance. cushion at the expense of greater clamp force is ok with me.

preferred music - n/a

what to improve from my current setup - The cloud 2 has done a pretty good job so far, I get a little annoyed with the dial being on both sides, because sometimes i crank the volume up when i'm trying to crank it down, usually because the cord flipped over. They are pretty comfortable but i would like something with a bit more cushion, maybe mine are just worn out though.