Features:
>Compact Bluetooth DAC and Headphone Amplifier.

>Bluetooth and Wired Operating Modes.

>Advanced Qualcomm QCC5125 Bluetooth Chipset.

>Dual CS43131 DAC Chips.

Advanced Bluetooth Connectivity:
With Qualcomm’s latest QCC 5125 Bluetooth chipset, the SnowSky Retro Nano brings advanced Bluetooth V5.1 connectivity. It provides a stable, lag-free Bluetooth connectivity with support for high-definition Bluetooth protocols such as LDAC, AptX Adaptive, AptX Lossless, and more.

Swappable Battery Design:
SnowSky Retro Nano supports endless playback, all thanks to its replaceable battery design. The Retro Nano comes equipped with a 3.7V rechargeable lithium battery. It is user-replaceable, so once the current battery runs out, simply replace it with a new battery or a fully charged one to get going once again.

Endless Playback With USB Mode:
SnowSky Retro Nano also supports USB DAC Mode. You can select between Phone/PC options for USB DAC mode. Phone mode will use Retro Nano’s own battery while the PC mode will use power from the connected device.

Powerful Sound Section With Dual-DAC and Amplifiers:
SnowSky Retro Nano comes equipped with a powerful sound processing section with dual DAC chips and amplifiers. It houses dual CS43131 DAC chips that provide crisp sound signal processing. These are combined with high-power amplifier chips promising a strong output of up to 220mW for an enjoyable listening experience.

Specifications

Bluetooth chip: QCC5125 (CPU+DSP dual-core architecture)
DAC: CS43131*2
Bluetooth version: 5.1
Bluetooth codecs: AAC/SBC/aptX/aptX LL/aptX Adaptive/aptX HD/LDAC
USB DAC: Driver-free up to PCM 96k
Display: 0.96 inch 80x160 color IPS
Headphone outputs: Single-ended 3.5mm + Balanced 4.4mm
In-line controls: Supports microphone, volume adjustment, and
play/pause controls in CTIA protocol
Color: White/Blue
Dimensions: About 55.1x37.5x13.7mm
Weight: About 28.3g (including battery)
Power supply parameter: DC 5V=1A
Battery: 3.7V rechargeable lithium battery (compatible with similar
10440 batteries), not compatible with AAA (1.5V) batteries
Charging time: ≤2 hours
Battery life: About 7.5 hours (single battery)
Output power 1: L+R≥100mW+100mW (32Q single-ended, THD+N <1%)
Output power 2: L+R≥220mW+220mW (32Q balanced, THD+N <1%) Frequency
response: 20Hz~40kHz (-3dB)
SNR: ≥128dB (A-weighted)
Noise floor: PO < 1uV (A-weighted); BAL < 1uV (A-weighted)
Output impedance: <0.3Q (32Q load)
THD+N: <0.0018%(1kHz/-4dB@32Q)