ThieAudio - Monarch MKIII
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Reddit Reviews:
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Last updated: Sep 3, 2025 Scoring
Liked most:
20
6
"tends to sound very correct to my ears"
"where I found the former to all have excellent treble qualities when I demoed them."
"I hear details in songs I've never heard before. ... The detail in every aspect is just amazing"
8
3
"The Monarch is my bass-canon."
"I sold my Z1R after I got the Monarch Mk3, it's just better all round, bass at least as good, and everything else is much better."
"it got both the rumble subbass from Variations and the midbass slams really hard."
9
5
"love the sound ... yeah I’d give the edge to the Monarch ... The monarch mk3 is more musical, close your eyes and disappear."
"The Mk3 is more immediately "impressive", more bass and maybe a bit more treble, definitely more "fun""
"I think the Monarch MK3 will fit you perfectly, of the few 1000$ IEM's I've tried it's the only one that I would consider fun and energetic."
8
2
"They also do some black magic with soundstage and imaging. ... The MK3 sounds bigger than some openback headphones I've owned."
"I hear details in songs I've never heard before. ... The detail in every aspect is just amazing"
"I like the ones that sound more natural and with a good separation and placing of instruments, even if it's all in a very small space basically in my head. The Monarchs (both Mk2 and Mk3) do that ... the Monarchs sound very natural, particularly the Mk2. ... they are absolutely great IEMs."
5
3
"spent 1000 iem in monarch mk3 is one of the best choise I ever made ... beyond that price point my ears cant tell fhe difference"
"I prefer Monarch Mk3 vs U12T which is twice as much ... I’m basically not wanting for more at this point."
"can’t say they’re really worth the extra $1,000 over the MK3 ... they certainly aren’t “twice as good”"
Disliked most:
1
9
"If monarch mk3 is 10 on a pain level lol ... I myself had to make custom eartips for my monarchs, they made some weird contact and creatd pressure points that were simply horrible."
"I started with the Monarchs and love the sound but I apparently have baby sized ear canals. ... I bought the ie900 discounted and use them about 80% of the time due to comfort alone."
"Comfort/Fit (essential for long listening sessions): ... 6. Thieaudio Monarch MkIII"
6
6
"I tried TheAudio Monarch and Oracle (don't remember Mk numbers) some time ago and wasn't impressed really. ... nowhere near the headphones at this price (Arya or LCD-2C) ... or substantially better than good quality $200-300 planar IEMs."
"it would surprise you how many iems sound just as good, at half its price."
"I wouldn't call it good value tho."
3
3
"I would use the mkiii exclusively for listening but they're too expensive for me to use them outside the house. I use the hype4 on the motorcycle or while working which are non ideal listening conditions anyway."
"If you want all rounders, Monarch is not it."
"it will not sound as good for vocal centric music; as the mid range might come across thin sounding and at times overpowered by the background."
3
5
"overly shrill in the mid-upper treble that it comes off as messy and crunchy"
"the EST treble on it felt unnatural. ... (Got the impression they were trying to make it more contrasty to artificially boost the stage)"
"fatiguing"
0
4
"The build quality is far better ... Way better accessories, stock cables are awesome and the cases. ... The build quality is leagues better, accessories and stock cables are great."
"something internally definitely got loose after about a year of using them. ... I carry them around in my backpack all the time, so that might have something to do with it. ... Pretty bummed considering how much they cost."
"The Monarch Mk3's are notoriously large-shelled, and they barely fit, so I got lucky!"
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