Test condition：USB DAC input，-5dB Sinusoidal signal，20Hz-20kHz，3.5mmphone out (32Ωloaded)
Frequency Response diagram of curves 2.
Test condition：USB DAC input，-5dB Sinusoidal signal，20Hz-50kHz，3.5mmphone out (32Ωloaded)
Model
BTR7
Color Available
Black
Weight
About 68g
Dimensions
About 39.6x83.6x14.6mm
Audio Input
Bluetooth connection (Bluetooth 5.1supported)
Supported Audio Format(s)
AAC/SBC/aptX/aptX LL/aptX adaptive/aptX HD/LDAC
Driver-free mode（Switch mode）
Supported
In-vehicle mode
Supported
NFC
/
Mic Function
Yes （Only supports voice calls under Bluetooth mode. Built-in omnidirectional microphone. Only supports the microphone of the CTIA standard headphones.）
Single-ended Headphone Output
3.5 mm stereo port
USB Port
TYPE C (USB2.0)
Balanced Headphone Output
4.4mm port
Recommended headphone impedance
16~100Ω（PO）
16~150Ω（BAL）
Channel Balance
≤0.2 dB
Gain
Supported(High/Low)
Volume Control
Side buttons
Status indication
Codec, charging status, battery level, volume, sampling rate, menu
APP interconnection
Supports setting through App
Bluetooth Codes Display
Supported
Charging Time
Wired charging time: ≤1.5 hours
Wireless charging time: ≤3 hours
Power Input
Recommend DC 5V 2A
Battery Capacity
880 mAh
Frequency Response
PO 20Hz~50kHz：±＜0.5dB
Output Power
PO about 165mW（16Ω loaded）
PO 20Hz~20KHz：±＜0.1dB
PO about 160mW（32Ω loaded）
PO about 18mW（300Ω loaded）
BAL about 235mW（16Ω loaded）
BAL 20Hz~50kHz：±＜0.5dB
BAL 20Hz~20KHz：±＜0.1dB
BAL about 320mW（32Ω loaded）
BAL about 40mW（300Ω loaded）
THD+N
＜0.00055%(1kHz/-6dB@32Ω)
Output Impedance
PO≤＜1.2Ω（32Ω loaded）
＜0.00048%(1kHz/-2dB@32Ω)
BAL＜2.8Ω（32Ω loaded）
Noise Floor
PO＜3uV（dbA）
Amplitude
PO：2.3Vrms
BAL: 3.2Vrms
BAL＜5.5uV(dbA）
SNR
PO≥≥118dB (dbA)(32Ω dbA)
Crosstalk
PO≥75dB
BAL≥107dB
BAL≥115dB (dbA)(32Ω dbA)
Sampling Rate Supported Up to
384kHz/32bit（USB DAC）
DSD Support (USB IN)
384KHz 32bit/ DSD256
hardware scheme
DAC: ES9219C *2，USB: XMOS XU208，AMP：THX_AAA_28*2
Accessories
Standard version: Type-C USB cable*1, Type-C to Type-C data cable*1, Leather case*1, Manual*1, Warranty card*1
Apple Deluxe Edition: USB Type-C to Type-C silicone cable, Lightning to USB Type-C cable
Frequency Response diagram of curves 3.
Test condition：aptX HD connection,play -5 dB sinusoidal signal, High Gain, 48kHz 20Hz-20kHz， 2.5mm balanced output (32Ω loaded)
Left channel=Red curve；Right channel=Blue curve;
Frequency Response diagram of curves 4.
Test Condition：USB DAC, -6dB Sinusoidal signal，20Hz-20kHz，PO(32Ω loaded)
Frequency Response diagram of curves 5.
Test Condition：USB DAC, -2dB Sinusoidal signal，20Hz-20kHz，4.4mm bal out（32Ω loaded)
