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A4s
632 in IEMs

64 Audio - A4s

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Based on 1 year's data from Feb 25, 2026 How it works

Reddit IconSuspiciousIdeal4246 1.0
Reddit IconForever_YDGn 0.1
r/MetalcoreDoes anyone use the Heavys brand headphones?
8 months ago

I used these for 6 years before I got some custom molded IEM’s from 64audio. IEM’s are insane but expensive unfortunately. If someone’s on a budget the 990’s are a solid option too

Reddit IconRNKKNR 0.1
r/iemswhats are the best IEMS for listening music and gaming?
3 months ago

Just get some CIEMs from 64 Audio and call it a day.

Reddit IconFederalWheel1168 0.1
r/iemsWhat’s your all-time favorite IEM and why?
8 days ago

I have a 1964 Ears CIEM, a Sony Z1R but all replaced by FatFreq Scarlet Mini. This tiny IEM brings joy listening countless hours. I revived my Cayin N6II DAP bcoz of it.

Reddit IconMo_Steins_Ghost 0.1
r/audioengineeringFor those of you who don't mind IEMs for voiceover editing and/or mixing which ones do you like?
5 months ago

I tend to work on my near field monitors but if I were going to use a pair of IEMs they'd be the 64 Audio 4S or 6S.

r/audioengineeringFor those of you who don't mind IEMs for voiceover editing and/or mixing which ones do you like?
5 months ago

A4 customs. Again I don’t use IEMs for monitoring/mixing… I don’t really recommend it. But I wouldn’t get IEMs that aren’t custom fit. I don’t buy used monitors. But that’s me.

r/audioengineeringFor those of you who don't mind IEMs for voiceover editing and/or mixing which ones do you like?
5 months ago

I think you're misinterpreting my statements. The first purpose of IEMs is not for control room work... I play drums, I do VO .... There are other applications than mixing and mastering for which IEMs are well suited. Others (almost everyone else who has replied) have also pointed this out to you in one form or another: There are numerous reasons to use near field monitors in mixing and mastering. Not only because large drivers and amplifiers will always be capable of a flatter response than IEMs, but it's also about how differently spatial imaging is represented by open air monitors vs. IEMs/headphones. You could give me a $50 million pair of IEMs designed by god himself, and I would still use near fields or mains to mix and master, and IEMs while tracking my own vocals, instruments, whatever. Physics is physics. Any IEM you can buy in any price range will always be less transparent than best-in-class open air near fields, mid fields or mains. **But your precondition is that you want to use IEMs anyway (hence, why I said "that's just me")**... so, setting aside the "why" and respecting that requirement, **\*\*\*IF\*\*\*** I were going to use IEMs for it, the 64 Audio A4s is probably the bare minimum of where I would start.

Reddit IconVenice320 0.1
r/drumsMultiple driver IEMs - are they worth it?
3 months ago

I use Audio 64 4s IEMs. And this Rolls amp, which incidentally was my idea. https://preview.redd.it/20cf3k81tc4g1.jpeg?width=298&format=pjpg&auto=webp&s=193a681ba263edbf0ef44546ea0317b2dac80cfd

Reddit Iconopsopcopolis 0.0
r/audioengineeringIn ear monitor that lets in stage volume, need help!
6 months ago

That’s 64 audio’s whole thing. They built a port with filters into their iems. Essentially acts like having a molded earplug with set db filters (believe they have 12, 15, 20, and solid) that passes signal through it.

Reddit IconCharacterIssue135 0.0
r/BeatmatchDJing with in-ear monitors vs. DJing with over-ear headphones
29 days ago

If you don't practice with IEMs, it would be better to not play with them either. The difference in volume perception, cue mix, and dealing with human interactions is pretty significant compared to the relative ease of sliding down your 'phones. Side note: most people see the visual cue of 'headphones on' and hold back on coming up to the booth - not so with IEMs. They just don't see them! I'm fortunate to have universal ear holes ?!!! so my set of 64Audio are great. Tried the Sennheiser HD-25 and they're good, also but actually did hurt my ears after a long gig. They also seemed to be tuned to clip certain frequencies but that could have just been my perception, Found that the bass was almost always too rich, when I really needed the mids to be in my sweet spot. The other gotcha with wearing IEMs, whether you get a custom fit or get away with the universal fits, is that you have to absolutely know, trust and believe in your FOH music management. You obviously don't need a booming booth monitor but if you're also controlling your own FOH on the fly, IEMs are not good for keeping your overall volume balanced. If you have to manage your own sound, I wouldn't trust my IEMs to not get in the way.

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