Rolls MX28 MINI-MIX VI Three-Channel True Stereo Line Mixer,Black

I’m using this in a small practice setup with a keyboard, guitar, and external audio (e.g. iPhone music) as input and studio monitors and/or headphones as output.This little unit is the perfect form factor and is working just fine after a couple weeks of use.I have not experienced any of the headphone noise mentioned by other reviewers.One gripe: Each input has a L/R pan knob with no markings. Wish it had a center marking of some kind.

Simple, quiet audio mixer. Headphone out works great.

This device works well with great audio quality and low noise so far!A few notes in addition to what others have said:- The device supports both mono and stereo. If you only plug into the right input of a channel, the mono input is duplicated on both L and R channels.- The separate volume controls for the headphone and master are independent. Changing one does not affect the other.- The small device is built in a heavy, sturdy case. I was hoping to lighten it up a bit, but there are no weights to remove, just a sturdy steel case. Not a bit deal (and the weight is probably a benefit for most users).- There are two headphones out, but they are tied together passively with a single volume control. This is as advertised for the use of having either 1/4" or 3.5mm connection. Seems to work fine for dual headphones but your experience may vary.Seems a bit pricey for what it is, but works well with the size and features I was looking for.

I have hearing loss and the opposite of "golden ears" or to put it another way I am no audiophile but this thing sounds good. Unfortunately the channels don't go to zero volume when turned all the way down, I can live with this, work around it but others may have more of a problem with it. For this I took off one star. Very solid built, made in America, good price, a welcome relief from cheap Chinese junk with funny names. If they had made one with 1/8 connectors vs 1/4 connectors I would have bought it as everything I am connecting is 1/8. Adapters solve that problem, no big deal.

I bought this mixer to keep on my desk at work, so I can listen to music from a docked iPod, and the sound from my PC. The jacks on the rear are all 1/4" mono (TS), and it has both a 1/4" and 1/8" stereo (TRS) headphone jack on the front. I actually use the "main mix" output on the back to go into a set of headphones, so there are no wires at all coming from the front. This configuration works well for me.Unlike cheaper models, this is a true stereo mixer - the L & R channels are kept separate, rather than mixed into a single mono channel that's sent to the L & R jacks for output. I should also note that the model I received is black with white labels, rather than beige with black labels, as pictured.Although this is one of the more expensive units out there, the sound quality is excellent, and because it's powered, there's no lack of volume. Highly recommended.

Felt nice and solid, and the balance controls had center detents. That's the good news.The bad news is there was a really loud hum on all disconnected inputs, and the power supply jack was intermittent (shut off depending on which way the cord was tugged).I suspect I could have made it work by making up plugs to short all the inputs I'm not using (to prevent them from picking up noise) and arranging it to avoid disturbing the power cable, but that's a bit too much to have to do.

The first MX28 I received had a high-pitched hum/buzz/whine noise in the headphone amp which was audible at normal listening levels, and awful if the headphone amp was cranked. The noise got louder if I touched my finger to the metal chassis. It was present whether or not anything was connected to the MX28's inputs and outputs. I tried another outlet. No change. I wrote to Rolls via their web contact form and asked if this was normal, but did not receive a reply.I tried another pair of headphones, but the noise was still there. The master output was clean, and sounded fine through an external HeadRoom AirHead headphone amp. Oddly enough, the noise also went away if I drove the AirHead's input the MX28's headphone output.Still, using an external headphone amp defeated half of my purposes for getting the MX28, so I ordered a replacement to see if I just got a bad mixer or power supply. The replacement had a similar noise, but it was higher pitched, a little quieter, and had a slightly different character to it. I tried the power supply from the first mixer with the replacement MX28 and now the replacement mixer sounded like the first one did. I tried the replacement power supply with both mixers and they both sounded the same with the same power supply.My conclusion is that the headphone amp design is susceptible to noise from the power supply, and that the power supplies vary in their level and character of noise. I suspect this would sound great running off of batteries, but the supplied wall wart power isn't clean enough. I found that connecting sources to the inputs and outputs, while using the replacement power supply, lowered the noise a little more to where it's not too bad at normal headphone levels, although it's still prominent if I turn the headphone amp up above the center position.I'm giving it 2 stars, because the mixer section and master output work well and don't have the whining noise, but beware if you want to use the headphone amp.Update 2/21/14: I bought a different power supply (Triad WSU150-0800) and that fixed the noise in the headphone amp. I'm happy with the sound now, so I'm bumping my rating up to 3 stars.

I use this mixer in my guitar practicing nook. Have it hooked up to a set of powered monitors, and have inputs set up for my phone, iPad, computer, and this like jam-station thing, so I can move between them without having to plug and un-plug a bunch of crap. works great.Edit: I checked mine for the hum some folks are talking about and could not reproduce the issue. I guess I got a good one, or my particular setup doesn't induce the hum.