DPPU(Desktop Plus Power Unit)：
DPPU adapts dual high-density battery customized power system, designed for High-Fidelity while ensuring separation of digital and analog power to eliminate digital circuit noise from the source, alike an enhanced DAP + Amplifier system but with a minimal path and hard soldered joints with no compromises.
Redesigned the charging circuit to reduce the switch circuit noise,ensure charging and playing at the same time, sound quality is not affected.
SG1 Power Design：
Normal Design:
The continuous evolution of Bluetooth technology, the development of aptx HD and LDAC protocols have made the wireless audio quality better and better.
According to the characteristics of Bluetooth digital signal output,SG1 selects appropriate DAC, well-designed LPF and headphone amplification circuit to make wireless sound tend to wired sound performance.
Software Design
Customize different firmware according to DAC and LPF circuits.
Different timbres through firmware instead of different accessories.
Inerface Design & CMF
Excellent control experience comes from the unique volume knob design.
The optimization of Touch &Feel algorithm makes the volume adjustment smooth and accurate.
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Specifications：
| Port： | |
| Input | Bluetooth |
| Output | 3.5 Single End/4.4 Balance |
| Specification： | |
| Bluetooth audio transmission format support: SBC，MP3，AAC，APT-X , APTX-L，APTX-LL，APTX-HD，LDAC等 |
|
| Performance： | |
| Frequency Response | 20Hz-20kHz |
| THD | 0.06% |
| SNR | 104db |
| MAX. POWER OUTPUT： | |
| Single End | 2.9V（32Ω） |
| Balanced | 2.8V（32Ω） |
| Others | |
| DAC Chip | ES9038Q2M |
| Chassis | CNC aluminum alloy |
| Dimensions | 117.5 x 59.2 x 16（mm） |
| Weight | 186g |
| Battery Life | 3.5 ：8 hours 4.4 ：6 hours |
| Charging | 5V 2A/3.5 Hours |
| Battery | 2000 mAH |