The two channel MX34C LiveMix by Rolls is a portable microphone mixer suitable for mixing two microphones and any stereo line-level source such as an iPod, CD player, or karaoke machine. The level and pan knobs on each phantom powered XLR input allows for sufficient control over volume and placement of audio as it's heard through a connected pair of speakers. Also, separate headphone circuitry makes monitoring the mix easy without ever affecting the overall main output.
Designed originally with video camera operators in mind, the MX34C is meant to be used anywhere with its convenient shoulder strap loops and 9 volt battery or AC adapter operation. Easy access front panel controls also make using this mixer a breeze while on the run. For hands free operation use the 3.5 mm mic input with a headset and narrate, host, or MC any event. The MX34C is an excellent choice for the live recording enthusiast in need of a quality, portable mixing solution.| Input Impedance | Mic: 600 Ohms or greater (XLR) Aux: 47K stereo (3.5 mm) |
| Output Impedance | 50 Ohms |
| THD & Noise | .02% |
| Signal to Noise Ratio | 110 dB |
| Frequency Response | 20 Hz to 30 kHz (+0 / -1 dB) |
| Maximum Output Level | +14 dB |
| Maximum Input Level | +20 dB |
| Maximum Gain | +70 dB |
| Batteries | Two 9V alkaline |
| Current Draw | 30 mA |
| Phantom Power | +18 VDC |
| Input Connectors | 2 female XLR 3.5 mm |
| Output Connectors | 3.5 mm Stereo main out 3.5 mm Headphone |
| DC Jack | 5.5 x 2.1 mm tip negative |
| Dimensions (WxDxH) | 6.3 x 3.7 x 1.4" (160 x 94 x 35.5 mm) |
| Weight | 1 lb (0.45 kg) |
Reviewed by 3 customers
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Comments about Rolls MX34c LiveMix 2 Channel Microphone Mixer:
I really wanted to like the MX34c because it appeared to have several things going for it: good build quality, lots of features, and a really reasonable price.
But, if you're like me, you probably want to buy a unit like this so you can use the generally quieter and higher quality XLR balanced microphones on your device that accepts only unbalanced 1/8" inputs in order to improve sound quality and lower the "noise floor." So, imagine how disappointed I was that noise hiss was actually greater when using this unit than without it. The electronics in this unit are way too noisy. Even the level controls made an obvious "swishing" noise when the level was changed. And the AC adapter when plugged in added it's own 60hz hum. And, whatever you do, don't make the mistake of unplugging a mic or turning the unit off with the headphones at normal listening level. If you do you'll get an ear-splitting click in your phones that you won't soon forget.
I tried during several hours of intensive testing with several different mics and recording devices to find the sweet spot for this unit, but there just wasn't one. I had to send it back. Bottom line: there's a good reason that most people buy active XLR adapters in the $300-$500 price range and not one like this that's closer to $100.
Pros
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Comments about Rolls MX34c LiveMix 2 Channel Microphone Mixer:
I wanted to like the Rolls 34c because it appears to have nice build quality, abundant features, made in the U.S. and is certainly priced right. But, for me, it didn't meet my professional standards because it was way, way too noisy. It added significant hiss to the audio signal and with very little gain. Even the smooth feeling pots added "swish-swish" noise when changing level, something I had never heard before on a new device. Plug in the included AC adapter and you'll add some 60hz hum to the hiss. And if you happen to plug or unplug a microphone or turn the unit off with your headphones on you'll get an ear-splitting click that will make your ears ring for a few minutes. Overall, it's cheap and that's the way it sounds.
Pros
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Comments about Rolls MX34c LiveMix 2 Channel Microphone Mixer:
Boost the Mics better then any booster I have seen.
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