Rolls MX42 Stereo Mini Mixer

So I feel like the MRRP for this is pretty high for a passive mixer, but sadly there aren't many alternatives that do exactly the same thing. As for the unit itself, it is very transparent and effective because its ultimately very minimal and simply designed! Others complain that it makes the signal quiet but this is exactly how a passive mixer works. Full volume is the equivalent to a wire, and you decay the sound from there. Volume will never increase without powering the mixer, so it should be paired with an amplifier directly afterwards which can compensate for this. I'm plugging a PC, Chromecast Audio and a Raspberry Pi into the same speaker system and I can tune the levels very nicely to play together. Build quality is great as others have mentioned.

Excellent little mixer. I used it to mix audio of three PCs in my study.

Does exactly as required, in a very compact form factor. Allowed me to wire up a Bluetooth receiver, Chromecast, PC, TV - all to one set of powered monitor speakers in the bedroom. Box is quality, solid metal, and connectors are good. Only gripe is it's a little pricey for what it is, and for the money I think it shouldn't have cheap plastic feeling volume knobs, they should be rubberised or metal. Doesn't impact audio performance, but makes this four stars rather than five.

Forget this unit. Honestly, the signal drop, with the levels on full, is so drastic that even a powerful amplifier will fail to deliver an acceptable sound. A total waste of a lot of money.

This has a nice build quality but you're not buying such a unit simply for that of course. I found it completely unusable and I returned it. The drop in signal level is more than I thought from other reviews here, it is drastic. I was trying to mix the signal from a Bluyeti microphone (I took the signal from the amplified - usually more than adequate volume - 3.5 mm headphone jack on the microphone) and mixed it with the signal from a PC 3.5 mm headphone socket. The volume decrease is drastic. With the Blueyeti output turned up to max - usually deafening on headphones - the signal was only just audible with the volume controls on the Rolls all set to maximum. Very disappointed. Unfortunately I wasted money on cables.What I liked was the build quality and the fact that the unit comes with a circuit schematic. It's a real shame about the signal volume.