No, but I have had problems ground-loops in other contexts. Sometimes you need something like this: https://www.amazon.com/s?k=ebtech+hum+eliminator&crid=1FBGGDRN3FTTF&sprefix=ebtech+%2Caps%2C71&ref=nb_sb_ss_ts-doa-p_3_7 Preferably though, look at your power cords. First, make sure they all...

Is there updated firmware for the K7BT? I have a lot of trouble navigating the web-site, but it looks like the only update (K7BT, not K7), is a firmware patch to disable the RGB leds.

May I assume those are powered speakers? I use powered speakers daily. Generally, I keep PC volume at max, and set K7 volume to about 70%.

I think for hard-wired, you are mostly limited to whatever EQ the iPhone app had (e.g. Apple Music). Some minor exceptions, but with the "sandbox" (locked-down) architecture of iOS, one app usually cannot affect another.

I use Boom3D on both Windows and Android. Very good, but really more to compensate for weak equipment. On iOS, it has limited usefulness. I recall it works with Spotify, but don't recall what else. On Windows, with K7, I only use the "night mode" (compressor) these days. Used more features...

How good does your equipment or ears need to be to hear a difference. I have $150 headphones, but usually use my powered speaker (Aiwa Axios-9). I am a bass-player who grew-up with 15" speakers and meaty amplifiers, so a clean well-defined bottom-end would probably be my concern. I like having...

Never mind - found it: https://forum.fiio.com/note/showNoteContent.do?id=202305081732393311947 Looks like all the new firmware does is turn-off the RGB. To turn the RGB back on, you download the old firmware.

Are there clear/reliable instructions for upgrading the firmware? Upgrading would be nice, but I don't want to "brick" the K7BT! All I see is this: https://www.fiio.com/newsinfo/838224.html

Could you elaborate on what options you have with RGB after flashing? LOVE my K7BT, but firmware instructions at FiiO are not the best...

Yep, got one from Amazon a week or so ago. Very nice!

On my K7BT, I do not hear a relay inside when turning the unit on or switching inputs, but I am used to audio equipment having relays inside that I can hear. I am guessing relays provide a better internal connection (audio path) than some sort of digital/transistor switch.

BTW, Windows has a “loudness” setting buried in the sounds settings usually, depending on your onboard DAC.

Negative. I use Boom 3D, which I got when I was using the onboard laptop DAC. Very useful for that, but with the K7 and the subwoofer in my Aiwa Axios-9 powered speakers, I have EQ off and just use the compressor (“night mode”) when watching movies or podcasts with the volume all over the...

I have the K7, but researched both. The iFi has a bass-boost, but I don’t think the iFi DAC is as good.

I don’t. I have USB in, and RCA to powered speakers.

FYI, the K7BT runs a little warm (though I keep my room at about 80 degrees F). I placed it on a laptop cooler pad, and it is running cool now. Just looking to make it last for years...

Just got a K7BT from Amazon. LOVE IT! Just wondering about how robust those little "Gain" and "Output" selector switches on the front panel are. When I use either, it seems like I can see the switch on the inside move just a little, like the PCB underneath (or the switch itself) is flexing a...

Can a vacuum cleaner be a threat to on-floor speakers? I always worried that the strong magnetic field from a vacuum cleaner, over time, could weaken the magnet in on-floor speakers.

Android really is pretty cool! I "sold out" and went with Windows & iOS, but I do have a Moto G6 that I use as an MP3 player, that has surprisingly good sound. Good to know about the developer mode "switches"!

My laptop is only "middle of the road" (Windows 10, Realtek audio, Intel AC-7265). In reading through another thread on Head-fi, I see some people talking about USB "dongles" that provide Aptx-HD, etc. I wonder if they help much?

On Windows 10, I am trying to optimize my Bluetooth connection to my Bluetooth headphones, and understand for future purposes where my "weak links" might be. Question: What DAC is used, when I connect Windows 10 Bluetooth to Bluetooth headphones? I would ass-u-me that the only DAC used is in...