I've always likened KATT to being more of a current-based rock station while The Brew was more of a classic hard rock station. I'll grant you it's been a bit since I've listened to either. I think the last time I listened to KATT was around Labor Day, and it's been a lot longer since I've listened to the Brew. I was, however, rather shocked to turn on the KATT and hear Fred Hendrickson. He still sounds great, but hearing him do hard rock when he'd been an oldies jock for almost 30 years was unexpected to say the least.
KRXO always sounded great as a classic rock station, though I was disappointed when it added Bob & Tom in mornings. I'm still surprised it went on such a downward spiral. The previous ownership certainly seemed to do what it could to trash the station the last few years it owned it, but it still was better than many larger market classic rock stations. It still sounds great on 104.5, but, as you mentioned, unless you're in OKC proper or have an HD Radio, your only option for hearing the station is streaming. Tyler Media is available on both TuneIn and iHeartRadio as well as their own apps. So, you have options, but, for most listeners, online listening tends to mirror their regular radio listening. Most of them have their favorite stations' apps, and they'll usually have any of the aggregators that their favorites are on, like iHeartRadio, if they're exclusive, but those of us with four content aggregators on our phones are really pretty rare. They also tend to go for more interactive listening options, like Pandora and Spotify, but distant listening is usually done either by radio people like us or people who have moved from one area to another and want to stay in touch with what was going on in their hometowns.
Growing up mostly in Tulsa, 94.7 and 101.9 were always audible on a good car radio or home stereo there until the Great Translator Invasion put translators on both frequencies there. As a kid, the only consistently audible stations from OKC being KEBC 94.7 and Lite Rock 102 was always disappointing. I always wanted the KATT, Z-99, and KJ-103. Of the big OKC radio stations, KATT was always the first one to fade on the I-44 run, usually between Stroud and Bristow while most of the others faded between Kellyville and Sapulpa. That may be one of the reasons I'll tune in the KATT and 104.5 before I'll listen to other OKC stations. I lived in OKC for a few months at a time both as a teenager and as a 20 year-old, and I had just started taking a liking to classic rock. I tended to flip between KRXO, KATT, Z-99, and KJ-103 while, as a 20 year-old, just listening to the first two with KOMA and KYIS as my backups for when they weren't playing anything decent. 94.7 was KEBC the entire time, and, while I didn't have the extreme prejudice against country music as a 20 year-old that I had as a teenager, country wasn't generally something I was going to listen to for enjoyment. 94.7 was just "that country station," and I never really had much of a connection to it.