MDA3(E) : Reference-level Portable USB DAC&AMP

 

15 years of high-performance HIFI Audio Equipment R&D experience

 

Pushing the limits of sound in portable AMP

 

 

Key features

 

Two versions based on power consumption and sound styles

 

Supports up to DSD256 & PCM768KHz

 

Breakthrough built-in capacitance of over 1380μF+

 

SNR 136dB, dynamic range 134dB, distortion + noise 120dB, ground noise only ~600nV

 

Maximum power: >400mW*2, with Class AB and Class H amplification modes， supports Class AB line output with volume control

 

1+2 PCBs, 6-layer main PCB design,4-piece parallel large package CS43131，8-channel DA&earphone AMP

 

4uV-level, separated 500mA earphone power supply,circuit 2A Level Variable Resistance LP1 Power Solution

 

±0.3ppm, -14x dBc/Hz (1KHz) high-grade 24.576M audio reference clock

 

(The above parameters are sample test results for MDA3 based on A-weighting at 20-20KHz. There are normal deviations in the chip itself.)

 

Two sound versions for multiple needs

 

MDA3: High-performance, high-power, multi-purpose, reference-level indicators. Providing a reference level of vivid live sound, the sound is dominated by the pursuit of extreme ambience.

 

MDA3E: lower power consumption, lower price, affordable, the pursuit of traditional CD Player style, the sound is smooth, warm, lush.

 

 

SOUNDAWARE's innovative power solutions:

 

Complex multilayer power technology with 4uV reference level power supply system

 

The key two main power supply using soundaware innovative LP1 module (High Efficiency, Lower Noise, High Current), while expanding the current, reducing internal resistance to ensure high efficiency: 200mA --> 2A, dedicated 4uV level 500mA high-performance linear LDOs for AMP module.

 

 

1+2 PCB design scheme, the main PCB is double-sided design with 6 layers.

 

Built-in 1380+uF capacitors

 

 

MDAC3: 560uf Ceramic Capacitor + Ultra Low Resistance 820uf Solid State Capacitor

 

MDAC3E:560uf ceramic capacitor + low resistance 220uf audio capacitor

 

 

 

 

MDA3(E) realizes 3~10 times the capacitance capacity of most portable AMPs, making it possible to use high-quality HIFI material for tuning

 

Groundbreaking power supply technology delivers unprecedented improvements in sound

 

 

l                      Details and overtones are fully realized, sound is more stable and comfortable, and tuning with different materials is possible.

 

l                      Soundstage, 3D feeling and dynamics are significantly improved.

 

l                      The output of the AMP is obviously better controlled, and the sound is more powerful.

 

 

Solved the problem of low quality digital output of IIS+MCLK

based on rich HI-FI reference home product R&D experience

 

The impact of low quality IIS+MCLK on the listening experience:

 

l                      Poor detail, weak sound, tinny sound-stage 

 

l                      Sound dynamic not in place, Loss of overtones, unnatural sound

 

Asynchronous DA and high-performance asynchronous master clock

are probably the only passive solutions to poor digital quality

 

 

MDA3(E) uses a customized audio frequency clock

that is only used in flagship HIFI home equipment

 

 

Benefits of 4 Pcs CS43131 in parallel:

 

 

8 channels, support class AB, class H:Large packaging with good heat dissipation, 8 DA channels with independent earphone AMP module, to meet the 8 channels&class AB earphone AMP mode of operation.

 

DA parallel indicators and performance enhancement:Parallel indicators and detail performance has a significant increase, but also to optimize the discrete single DA problem.

 

Lower power consumption ratio than the independent earphone AMP: power consumption is lower than the positive and negative power supply AMP chip, but instead of a higher power output.

 

 

Benefits of CS43131 in large packaging

 

 

 

Better heat dissipation to meet the long-term working requirements of class AB earphone AMP.

 

Class AB mode, has a more stable operating temperature, clock and material accuracy is higher.

 

Class AB mode, as an earphone amplifier, the power consumption will be increased by about 20%.

 

High-performance class AB balanced line output mode

with volume preamp

Indicators at the reference level

 

 

(The above parameters are sample test results for MDA3(e) based on A-weighting at 20-20KHz. There are normal deviations in the chip itself.)

 

 

 

Two versions with completely different sound styles and power consumption

 

 

Edition	MDA3	MDA3E
Key indicators	~120dB/134dB	3dB less than MDA3
maximum power	410mW*2	About half of MDA3
Actual operating power consumption	~500mW	80% of MDA3
Sound style	Naturalness,balanced sound,providing reference level of live feeling	the pursuit of traditional CD Player style, the sound is smooth, warm, lush
Liveliness, detailing, dynamics, transparency	The best	Less than MDA3
Recommended Usage	Both 3.5mm and 4.4mm are worth trying, and the 4.4mm interface is highly recommended when driving headphones	4.4mm interface is highly recommended

 

 

Blade style design, compact and easy to carry, 5-axis CNC machining process

 

 

Size:65mm×24mm×14mm

 

Weight:28.8g

 

Other Specifications

 

Output Level: 4V RMS (balanced ), 2VRMS (single)

 

Balanced power at 32 ohms (<1%): ~310mw*2(MDA3)/~195mw*2 (MDA3E)

 

Hardware Native Sample Rate: DSD256, DOP128 and PCM768

 

USB voltage operating range:4~5.3V