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Acoustic Research AR-M20

Acoustic Research AR-M20

Brand: Acoustic Research
Product Code: AR-M20
Availability: In Stock
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Second Generation Acoustic Research M-Class Hi-Res Audio Platform Inherited from our award-winning M2, the M20 features the unique AUDIO-centric 2nd Generation Acoustic Research M-Class Hi-Res Audio engine. Unlike typical CPU-centric music players, the audio system in M20 acts as the clock master and the CPU operates as the slave component to the sound system. Jitter error from CPU is minimized significantly. Extreme accuracy in audio is genuinely prioritized.


The AR-M20 is equipped with a high-resolution audio effects feature


Provides optimum presets for various music genres:

Normal, Classic, Dance, Flat , Folk, Heavy Metal, Hip Hop, Jazz, Pop, Rock, User

Bass boost

Improves audio reproduction and strengthens

3D Effect

Allows sound to strengthen when played in any three-dimensional space

Verified and recommended Micro SD Cards:

Lexar 633x (Up to 200GB)

Patriot LX Series (Up to 200GB)

Samsung Evo, Evo+, Pro, Pro+ (Up to 128GB)

Toshiba Exceria UHS-I (Up to 128GB)




Headphone Output (3.5mm Standard Stereo Mini Plug) X 1

Headphone Amplifier

Class AB configuration

Up to 2.1Vrms / 6.0Vpp unbalanced output

16 tp 600 ohms

THD + N (total harmonic distortion plus noise) <0.001% at maximum output


Dimensions    Width: 2.76 In x Height: 5.35 In x Depth: .44 In
Battery Type    3150 mAh, Up to 16 hours
Memory    32GB
Maximum Memory Expansion    Micro SDXC card (Up to 200GB) USB-OTG
CPU    Qualcomm MSM8926
Digital audio transceiver/clock master    Burr-Brown PCM5242
Pre-Amp (Voltage Amplification)    Burr-Brown PCM5242
Crystal clock sources for audio    Dual XO
Weight    About 6.3 oz
Compatible Format Supported    FLAC/ALAC/DSD64/DSD128/WAV/DXD/APE/AIFF
USB Reader    Micro-USB (Data / Power / OTG*) *Support USB storage requiring less than 5V 100mA power
DAC    Burr-Brown PCM5242
Headphone Amplifier    TI TPA6120A2 / Class AB Configuration / Up to 2.1Vrms Output
Volume Control    Digital (150-step, 0.5dB/step) Digital (150-step, 0.5dB/step)
Wireless Network    802.11B/G/N
Audio Output    Headphone Out (3.5mm)