S.M.S.L D12 User Manual (English)

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S.M.S.L D12 Specifications

General

Bluetooth Version	5.0
Power Consumption	<5W
Standby Power	<0.5W
Input	USB, Optical, Coaxial, Bluetooth
Output	Headphone, RCA
USB Transmission	Asynchronous
USB Compatibility	Windows, Mac, Linux
Bit Depth	Up to 32-bit
Sampling Rate (USB)	Up to 768kHz
Sampling Rate (Optical/Coaxial)	44.1kHz ~ 192kHz
Bluetooth Codec Support	SBC, AAC, aptX, aptX-HD, LDAC
Frequency Response	20Hz - 20kHz
Operating Voltage	5V
Dimensions	120mm x 120mm x 35mm

Summary

Safety Precautions

User Modifications and Professional Service

Do not attempt to modify or fix the unit yourself. Contact authorized personnel for any service needs.

Warranty Terms

Service Period and Return Policy

7-day return/replacement for defects, 1-year free repair for normal use.

Service Period and Return Policy

Warranty Exclusions

Excludes damage from misuse, unauthorized modification, improper accessories, or lack of proof of purchase.

Warranty Exclusions

Key Features

MQA and High-Resolution Audio Support

Supports MQA via USB, XMOS XU-316 for up to 32bit/768kHz and DSD512 sampling rates.

Advanced Audio Components

Technical Specifications

Output and Headphone Specifications

USB, Sampling Rate, and Bit Depth

Supports UAC1/UAC2, PCM 44.1-768kHz, DSD 2.8224-22.5792MHz, bit depth 1-32bit.

Operating the Unit

Power On/Off and Input Switching

Advanced Operations

MQA Indicator Light Status

Explanation of MQA indicator light colors: Green (MQA), Blue (MQA Studio), Magenta (MQA Rendering).

PCM Filter Settings

Understanding MQA

MQA Technology Overview

MQA is a British technology for high-resolution audio encoding, providing master quality sound.

MQA File Playback Guide

Instructions for playing MQA files, software compatibility, computer volume, and indicator light meanings.

Safety Notes

Voltage and Electrical Safety

Use only the specified voltage. Higher voltage may cause fire, damage, or personal injury.

User Modifications and Service

Do not modify or fix yourself. Contact service personnel; the cabinet should not be opened.

Features

MQA and High-Resolution USB Support

USB supports MQA; XMOS XU-316 solution supports sampling rate up to 32bit/768KHz and DSD512.

Audio Chipset and Noise Reduction

Specifications

Input and Output Levels

Headphone Output Power

Audio Performance Metrics

THD+N 0.00015%(-116dB), Dynamic range 120dB, SNR 120dB.

USB Compatibility and Sampling Rates

Supports UAC1, UAC2, various OS. Sampling rates: PCM 44.1-768kHz, DSD 2.28224-22.5792MHz.

Instructions

Power/Input Key Operation

Function Introduction

MQA Indicator Light Colors

Green: MQA, Blue: MQA Studio, Magenta: MQA Rendering.

PCM Filter Setting Options

About MQA

MQA Technology Description

MQA is an award-winning British technology delivering original master recording sound.

MQA File Playback Requirements

No special software needed; use foobar2000/Audirvana with ASIO/WASAPI. Maximize computer volume.