Parameter Comparisons Between BTR3K, BTR13, BTR15, BTR7 and BTR5 2021
Items BTR3K BTR13 BTR15 BTR7 BTR5 2021
Bluetooth chip CSR8675 QCC5125 QCC5125 QCC5124 CSR8675
Bluetooth version 4.2 5.1 5.1 5.1 5
DAC AK4377Ax2 CS43131×2 ES9219MQ×2 ES9219×2 ES9219C×2
Independent Amp THX AAA 28 x2
Independent power supply for amp / High-performance charge pump and LDO combo High-performance charge pump and LDO combo Efficient DC/DC+LDO /
USB chip / / XMOS XU316 XMOS XU208 XMOS XU208
USB sampling rate PCM 48K PCM 96K PCM 384/32bit,DSD256 PCM 384/32bit, DSD256 PCM 384/32bit, DSD256
Bluetooth codec AAC/SBC/aptX/aptX LL/ aptX HD/LDAC AAC/SBC/aptX/aptX LL/ aptX HD/LDAC/aptX Adaptive AAC/SBC/aptX/aptX LL/ aptX HD/LDAC/aptX Adaptive AAC/SBC/aptX/aptX LL/ aptX HD/LDAC/aptX Adaptive AAC/SBC/aptX/aptX LL/ aptX HD/LDAC
Headphone out 3.5mm+2.5mm 3.5mm+4.4mm 3.5mm+4.4mm 3.5mm+4.4mm 3.5mm+2.5mm
In-line control Supports CTIA Supports CTIA / Supports CTIA Supports CTIA
Display RGB light 0.96-inch IPS color display 0.96-inch OLED 1.3-inch IPS color display 0.49-inch OLED
Wireless charging / / / Supported /
Volume level 32 levels 60 levels 60 levels 60 levels /
EQ 10-band GEQ, not available for LDAC and USB 10-band PEQ+GEQ, all Bluetooth codecs and UAC 10-band PEQ+GEQ, all Bluetooth codecs and UAC 1.0/2.0 10-band PEQ+GEQ, all Bluetooth codecs and UAC 1.0 10-band GEQ, not supported LDAC and USB
BAL output power L+R≥78mW+78mW (@32Ω) L+R≥220mW+220mW (@32Ω) L+R≥340mW+340mW (@32Ω) L+R≥320mW+320mW (@32Ω) L+R≥240mW+240mW (@32Ω)
SE output power L+R≥25mW+25mW (@32Ω) L+R≥100mW+100mW (@32Ω) L+R≥125mW+125mW (@32Ω) L+R≥160mW+160mW (@32Ω) L+R≥80mW+80mW (@32Ω)
SNR 122dB (A-weighted) 128dB (A-weighted) 122dB (A-weighted) 118dB (A-weighted) 122dB (A-weighted)
Battery life Low power mode: BAL and PO about 11h;
High-performance mode: PO about 9.5h, BAL about 7.5h
About 8h About 8h About 9h  
Working mode Bluetooth+Switch UAC priority through the app Switch priority through the toggle switch between Bluetooth/PC/Phone mode Switch priority through the toggle switch between Bluetooth/PC/Phone mode Bluetooth+Switch priority on settings menu between Bluetooth/UAC mode Switch priority on settings menu between Bluetooth/UAC mode
USB power supply USB power supply+charging USB discharged/USB power supply only/USB power supply+charging USB discharged/USB power supply only/USB power supply+charging USB discharged/USB power supply+charging USB discharged/USB power supply+charging
Process Aluminium alloy middle frame+glass Plastic+glass panel Aluminium alloy middle frame+hot bending glass Aluminium alloy middle frame+Glass Aluminium alloy middle frame+Carefully processed curved glass
Weight About 25g About 28.6g About 37.3g About 68g About 43.7g
Dimensions 58×25×18.9mm with back clip About 63.2x30x18.8mm with back clip About 72.2x32.0x12.5mm (no back clip) 83.6×39.6×14.2mm (no back clip) About 72×32×11.1mm
Color Black Black, Blue Black, Blue Black, White, Titanium Black, Mirror of the Sky