My Iphone 4 Volume Only Works With Headphones

My son really enjoys the headphones. Good volume quality

I use it to connect my wired headphones to my new iPhone. Works great!

It works exactly as I wanted it to. It boosts the volume of my standard headphones from my laptop as much or more than I can use.

My favorite feature on these little speakers is being able to play 3 audio sources at the same time. I use the headphones jack with my TV (movies, Switch, Xbox), RCA jacks with my audio interface connected to my laptop and keyboard, and bluetooth with my iPhone. This feature makes these little speakers really useful (such as being able to play along on my keyboard with music from my iPhone). Also the sound quality and volume will make you grin for such a small speaker. What would make these perfect is if they just got a smidge louder. I grew up playing an upright piano, and these speakers get impressively loud, yet leave something to be desired, especially when playing my keyboard. I find they start to peak right when I get the keyboard to a volume that fills the room. With that said though, these speakers are so much better and louder than any built-in keyboard speakers I've used. Honestly I would have spent twice as much for these speakers.

Only by about 3%-4%, but still 6 cores are doing better than 8. Runs reasonably cool and no problems with games or professional apps like Photoshop or Lightroom. For most people wanting a fast enough computer without a big investment this is the sweet spot.

My Steinberg audio interface cannot drive the 32-ohm Yamaha on-ear headphones I like to sufficient volume. Putting this device between the Steinberg and the headphones gives a more-than-sufficient volume boost huge excess headroom; it could probably power way higher-impedance phones than mine. It's probably not audiophile-level sound, but for my purpose (hearing myself during self-recording) it's fine. The build quality seems good, and I like that I can switch the phones from mono to stereo. I don't make use of its other features, like mic monitoring/mixing.

Requests would be volume control on the headphones and better waterproofing.

Volume control would be nice to have on headphones

This works very well to control the volume individually for each of up to 4 separate pairs of headphones all being fed from the same source.

Use to connect iPhone to mixer and mic and headphones. Works perfect so far.