RockBoard

RockBoard LM 4 Four-Channel Line Mixer

3,484.00

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Description

Description

RockBoard LM 4 4-Channel Line Mixer for Stage & Studio

The RockBoard LM 4 Four-Channel Line Mixer is a compact, professional-quality line mixer designed to combine up to four mono line-level audio sources into a single mono output. Whether you’re managing multiple keyboards, synthesizers, effects processors, playback devices, or other line-level equipment, the LM 4 provides a simple and efficient solution while preserving excellent audio quality.

Each of the four input channels features its own dedicated high-performance amplifier and independent volume control, allowing precise level adjustment for every connected source. Its low-noise circuitry and premium internal components ensure clean, transparent audio with minimal distortion, making it equally suitable for live performances, rehearsal spaces, home studios, and professional recording environments.

Constructed with a rugged metal enclosure, the LM 4 is built to withstand the demands of touring and everyday use while maintaining a compact footprint that easily fits onto pedalboards, desktop workstations, or live rigs.

Powered by the included 12V DC power adapter, the mixer delivers professional performance with a 95 dB signal-to-noise ratio, 0.009% total harmonic distortion, and a wide frequency response for accurate sound reproduction.

Whether used as a keyboard sub-mixer, effects return mixer, or compact audio routing solution, the RockBoard LM 4 provides reliable, high-quality signal mixing in a portable package.

The Stockist is the official distributor of RockBoard, offering genuine products backed by reliable customer support and warranty.

Key Features

  • Compact 4-channel mono line mixer
  • Combines four mono line-level inputs into one mono output
  • Dedicated high-performance amplifier for each input channel
  • Independent volume control for every channel
  • Low-noise audio circuitry for professional sound quality
  • Excellent clarity across all volume levels
  • Rugged metal enclosure for stage and studio durability
  • Compact design for pedalboards, desktops, and live rigs
  • Ideal for keyboards, synthesizers, effects processors, playback devices, and audio equipment
  • Includes 12V DC power supply

Specifications

Specification Details
Product Name RockBoard LM 4 Four-Channel Line Mixer
Product Type 4-Channel Mono Line Mixer
Inputs 4 × 6.35 mm (¼”) TS Mono Jack
Output 1 × 6.35 mm (¼”) TS Mono Jack
Input Controls Independent Volume Control for Each Channel
Amplifiers Four Dedicated High-Performance Amplifiers
Signal-to-Noise Ratio 95 dB
Total Harmonic Distortion (THD) 0.009%
Frequency Response +1 dB / -2 dB @ 20 Hz – 22 kHz
Power Supply 12 VDC, 20 mA
Power Connector 2.1 × 5.5 mm Barrel Plug
Polarity Center Negative
Power Adapter Included
Enclosure Metal
Dimensions (L × W × H) 102 × 58 × 45 mm
Weight 182 g
Additional information

Additional information

Brand

RockBoard