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But anyone knows if a EQ app will make things better?

Uh, out on a limb here but isn't bluetooth audio digital?

yes

it has probably to do with the supportet codec/bitrate of both devices involved, nothing wrong with bluetooth per se.

I got Jabra REVO bluetooth headphones and I have to heavily disagree.

What are you talking about? There are many ways audio can travel over bluetooth. A2DP is high quality suitable for listening to music ; HSP is for mobile phone headsets and has much lower quality, HFP is used for phone<>car stuff, and there are probably a few more, all with different qualities.

Then, inside A2DP, there can be several codecs, ranging to a default crappy lossy one, to AAC and ATRAC. This can include MP3, or whatever custom codec your particular device is using.

get a better receiver / speakers

blame your 4 euros worth of speakers, get some decent ones or a subwoofer :)

Do you know if this is also normally the case for (original equipment) in-car music playback?

Ok

EQ apps make everything better.

Make sure your EQ app has a bass cliff filter.

Then your speakers suck. How is this demoscene related? :)

BASS

I had a similar problem recently and it turned out, that our kittens turned down my subwoofer. Okay, probably not the kittens but me when I moved it to insert random cables, etc. But still. You might wanna check this out.

Also check out all the option crap you can find and see if there's something weird like 5.1, 7.1 or whatever turned on. You might wanna try out Stereo and then see how it sounds. Also you might wanna try the same speakers without bluetooth to actually see if they sound good at all in the first place. \o_O/

I've heard a subwoffer is a small dog.

true

fucking touch input fucked that up...

I will have a look on the internals of my: car's audio system, my car's bluetooth receiver and will post back along with my phone and perhaps we'll get to the bottom of this.

I've tried with an EQ app, the feeling is just not the same.

I feel like when listening from a MP3, even with crappy bitrates, everything seems much much more... rich. You know what I mean, right?

I think you have no idea what you're talking about either.

You might be better off using cables... I'd recommend this one, because when talking digital, nothing beats expensive cables !!#@!%@#

yeah and watch out for bit rot. the more often you play a particular MP3, the worse it gets. my advice is to make a copy of every MP3 before you listen to them in your car and replace them from time to time. MP3 is a bad idea anyway, that's why i prefer to listen to vinyl in my car, so obviously i drive a pickup car.

That's complete bullshit Maali. You get audio stuttering when the cache gets cold, you need to warm up the cache periodically by playing back your MP3s regularly with a CPU temperature of at least 80°, otherwise you'll get hiccups.

... bit rot, what a lot of rubbish.

No it's not, it's also known as rotational velocidensity and affects all audio files encoded with lossy compression. These include mp3, aac, and ogg.

The most notable effect of rotational velocidensity is the loss of bitrate in files. A lossy audio file will lose an average of 12kbps a year. But, this can vary greatly depending on the type of storage media used.

Examples:

SATA HDD: ~12kbps
IDE HDD: ~15kbps
SCSI HDD: ~7kbps
DVD: ~16kbps
CD-R/RW: >21kbps

This can be overcome by compressing audio using lossless formats such as FLAC, APE, or TTA. These formats are designed to never lose quality over time, and will sound the same right now as they will in 10 years.

xTr1m: That sounds like you're driving a diesel? you can in winter time place your USB stick or CD-R between a warm towel for ~5 minutes before you plan to take a drive. Easy trick and that way you'll avoid stuttering. My brother microwaved a CD-R once, but that turned my collection of Bach into Venetian Snares, sadly, so I wouldn't recommend doing that, unless you're into Venetian Snares.