Frequency Response diagram of curves 1.

 

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:

Charging cable, back clip, manual, 
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)