Rockboard LM 4 4-Channel Line Mixer
4-Channel Line Mixer
- Compact mixer for stage and studio applications
- Four separate amplifiers
- Separate volume controls for each input
- Best sound quality at all volumes
- High-quality components and robust design with metal housing
- Includes 12 V DC / 20 mA power supply unit
- 2.1 x 5.5 mm barrel connector, centre negative contact
- Input: 4 x 6.35 mm (1/4") TS socket
- Output: 1 x 6.35 mm (1/4") TS socket
- Signal-to-noise ratio: 95 dB
- Distortion factor: 0.009 %
- Frequency response: +1 dB / -2 dB at 20 Hz -22 KHz
- Dimensions (L x W x H) incl. knobs and feet: 102 x 58 x 45 mm
- Weight: 182 g
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Available since January 2025
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Item number 606758
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Sales Unit 1 piece(s)
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Parallel usable Channels 4
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Mic Ins 0
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Stereo Ins 0
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Master Out 6,3 mm unbal.
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Number of Pre Aux max. 0
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PC Interface No
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Multitrack Recording No
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USB/SD Direct Record No
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PFL No
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Effect Processor 0
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USB Play No
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Bluetooth Play No
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Foot Switch No
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Matrix Mixer No
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Zones 0
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19" Rackmount No
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Width 102 mm
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Depth 58 mm
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Height 45 mm
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Weight 0,182 kg
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Mono Line Ins 0
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Hi-Z Input 0
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Phantom Power No
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Aux Ways 0
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Audio Interface Input 0
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Audio Interface Output 0
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Lamp Connector No
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Rackmount No
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Four signals in one compact unit
Rockboard is best known for its smart solutions for pedalboards, but the German company's range goes well beyond the needs of pedal fans. The Rockboard LM 4, for instance, is a four‑channel mono line-level mixer: This compact device offers four 1/4" inputs and one output, for a whole host of uses on stage and in the studio. But it wouldn't be RockBoard if weren't also a practical tool for pedal fans – the LM 4 is ideal for creating parallel signal paths with multiple effects units. This wallet-friendly mixer also features a very simple control layout, with just four dials to adjust the individual channels' levels. And with its ultracompact size of 102 × 58 × 45mm, it could almost fit in a wallet, too – certainly, it's not much larger than a pack of playing cards.
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Distortion? Forget it!
The electronics on the RockBoard LM 4 ensure line‑level signals with exceptionally low self‑noise, delivering a signal‑to‑noise ratio of 95dB. When used with a high‑quality input signal, it'll performs reliably in a huge range of applications, making it suitable for both live and studio environments. With a total harmonic distortion of 0.009%, this compact mixer also operates with extremely low distortion; this figure falls well below the threshold at which the human ear can perceive harmonic artefacts. As a result, the audio signal at the output remains almost entirely unaltered. A 12V DC power supply is included to ensure stable operation.
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Four in one!
Guitarists, producers, and stage techs who often have to route up to four mono audio signals to a single destination will find exactly what they need in the RockBoard LM 4. It's particularly practical when the main audio interface or mixing console only has a limited numbers of inputs, but it also allows guitarists to run different effect chains in parallel. This makes the LM 4 useful not only in project studios, but also for more complex on-stage pedalboard setups that need to combine several effects into a summed signal – for example, blending a fuzz with a high‑gain drive to dial in a really unique sound. As with all line-level mixers, it's essential that the signals already have the necessary amplification; with many standard microphones, for instance, the signal is often too weak for this purpose, so they require a dedicated preamp.
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About RockBoard
RockBoard is part of the Warwick group, which is based in Markneukirchen in Germany's Vogtland region. RockBoard's range focuses on pedalboards, which are available in numerous different designs to suit any application and budget. They are complemented by an extensive range of accessories, from slick patchbays for expanding the boards and high-quality patch cables for loss-free connection through to high-performance power adapters and the QuickMount system for rapid effect changes. In short, RockBoard offers virtually everything that players need to easily set up their own individual pedalboard.
Strong enough for any gig, small enough for every rig
The RockBoard LM 4 is an immensely practical, low-distortion addition to any well‑planned recording setup or touring rig – anywhere a straightforward line mixer is required. Its robust construction makes it fully road‑ready, and its compact format allows the unit to be carried easily in virtually any instrument bag. The remarkably small footprint is also a plus in pedalboard setups, as the LM 4 will fit onto most boards without difficulty. Wherever it's used, with this cost‑effective line mixer from RockBoard, musicians and producers have a practical solution for a wide range of applications.
