FiiO BTR15

Basic specifications:

Bluetooth chip: QCC5125 (CPU+DSP dual-core architecture)

Bluetooth version: 5.1

USB chip: XMOS XU316

DAC: ES9219MQ*2

Bluetooth codecs: AAC/SBC/aptX/ aptX LL/ aptX Adaptive/ aptX HD/LDAC

USB DAC: Asynchronous 384kHz-32bit, DSD256

USB DAC driver-free mode: Supported

Display: 0_96-inch 96x96 resolution OLED

Headphone outs: Single-ended 3.5mm + Balanced 4.4mm

Dimensions: About

Weight: About 37.3g

Charging time: <2h

Battery: 550mAh high-temperature resistant lithium-ion

Battery life: About 8 hours

Output power 1: L+R2125mW+125mW (32Ω single-ended/THD+N < 1%)

Output power 2: L+R215mW+15mW (300Ω single-ended/THD+N < 1%)

Output power 3: L+R2340mW+340mW (32Ω balanced/THD+N < 1%)

Output power 4: L+R250mW+50mW (300Ω balanced/THD+N < 1%)

Frequency response: 20Hz-50kHz (-0.8dB)

Signal-to-noise ratio: 2122dB (A-weighted)

Noise floor: PO < 2uV (A-weighted); BAL < 2.7uV (A-weighted)

Output impedance: PO < 1Ω (32Ω load), BAL < 1.5Ω (32Ω load)

THD+N: (1kHz/32kΩ)