RADIAL / MC3

This studio monitor selector from RADIAL can switch between two powered speakers.

Circuitry: Relay-switched passive stereo with active headphone and subwoofer outputs
Number of channels: 2.1 (stereo, subwoofer)
Frequency Response: 0Hz to 20kHz (-1dB @ 20kHz)
Dynamic Range: 114dB
■Noise: -108dBu (Monitor A & B outputs)
　　　　　-95dBu (subwoofer output)
THD+N: <0.001% @ 1kHz (0dBu output, 100k load)
■Modulation distortion: <0.001% 0dBu output
Input impedance: 4.4k Min. balanced, 2.2k Min. unbalanced
Output impedance: Depends on LEVEL ADJUSTMENT setting
Headphone maximum output: +12dBu (100k Load)
Dim attenuation: -2dB to -72dB
Input: L/R balanced/unbalanced 1/4" TRS
Monitor Outputs: L/R balanced/unbalanced 1/4" TRS
Aux Output: Stereo unbalanced 1/4" TRS
Sub output: Mono unbalanced 1/4" TS
Dimensions: 148W x 48H x 115D mm
Weight: 0.96 kg
Power supply: 15VDC 400mA power adapter (center positive) included

~From the manufacturer's website
This studio monitor selector allows you to switch between two powered speakers. Switching between different monitors allows you to compare different types of listening. It also has a headphone amplifier for listening with a portable audio player. The stereo output level can be adjusted for each monitor, and the MASTER control adjusts the overall volume. This unit is a simple device that allows you to adjust the speaker levels and turn on the speakers you want to hear.