| General Specifications |
| Name/Model |
BTR15 |
Hardware Scheme |
DAC: ES9219MQ * 2 ,USB: XMOS XU316, Bluetooth decoding: QCC5125 |
| color |
Black/Blue |
Volume Control Type |
entity key |
| Weight |
about 37.3g |
three circumference dimensions |
approximately 32.0x72.2x12.5mm |
| MQA Renderer |
support |
mobile phone decoding (small tail mode) |
support (set the mode switch to the phone file) |
| Drive-free mode (switch mode) |
support |
Car mode |
can follow the car USB automatic switch machine |
| Microphone function |
Support Bluetooth voice calls, built-in omnidirectional microphone |
Channel Balance |
<0.2dB |
| gain |
L/H |
FiiO Control |
supports APP settings |
| Bluetooth format indication |
support |
Status Indication |
display indicates transmission format, charge, power, volume, sample rate, menu |
| Deep Standby |
Without any connection, it will automatically enter the power-saving shutdown in 2 minutes, and the time can be set by APP. |
Bluetooth reception (5.1) |
AAC/SBC/aptX/aptX LL/aptX adaptive/aptX HD/LDAC |
| screen |
0.96 inch OLED |
Firmware Upgrade |
Bluetooth firmware can be upgraded via OTA |
| Maximum supported sampling rate |
PCM: support up to 384KHz/32bit |
XMOS firmware can be upgraded via USB |
| DSD: Support up to DSD256 |
impedance adaptation |
PO:8~150Ω
BAL:8~350Ω |
| Keys and Interfaces |
| key |
power key * 1; Multi-function key * 1; Volume plus and minus key * 1 |
USB |
TYPE C USB2.0 (charging/data transfer) |
| Headphone output |
standard 3.5mm socket |
balanced output |
standard 4.4mm socket |
| toggle switch |
mode switch * 1 |
|
|
| Power Parameters |
| power supply |
DC5V 1A |
Battery Capacity |
550mAh lithium polymer battery |
| charging time |
charging time: ≤ 2 hours |
|
|
| Endurance and Test Conditions |
|
|
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| 3.5mm headphone output: ≥ 8 hours |
| Audio Input |
Bluetooth reception |
encoding format |
AAC |
| Volume |
Level 21 |
gain |
high |
| screen status |
Close |
Playback tracks and formats |
MP3 44.1KHz/16bit |
| EQ |
Close |
load |
32 Ω |
| 4.4mm balanced output: ≥ 8 hours |
| Audio Input |
Bluetooth reception |
encoding format |
AAC |
| Volume |
Level 19 |
gain |
high |
| screen status |
Close |
Playback tracks and formats |
MP3 44.1KHz/16bit |
| EQ |
Close |
load |
32 Ω |
| Audio Parameters |
| headphone output part performance parameters (3.5mm,UAC decoding) |
| output power |
L+R≥165mW+165mW (16Ω,THD+N<1%) |
output impedance |
<1Ω |
| L+R≥125mW+125mW (32Ω,THD+N<1%) |
channel separation |
≥ 78dB |
| L+R≥15mW +14mW(300Ω,THD+N<1%) |
output amplitude |
2Vrms |
| distortion plus noise |
<0.0008%(1kHz/-8dB @ 32Ω) |
signal-to-noise ratio |
≥ 120dB (A-weighted) |
| frequency response |
20Hz ~ 50kHz: attenuation <0.8dB |
bottom noise |
<2uV(A weight) |
| 20Hz ~ 20KHz: attenuation <0.1dB |
|
|
| balanced headphone output part performance parameters (4.4mm,UAC decoding) |
| output power |
L+R≥270mW+270mW(16Ω,THD+N<1%) |
output impedance |
<1.5Ω |
| L+R≥340mW+340mW(32Ω,THD+N<1%) |
channel separation |
≥ 114dB |
| L+R≥50mW+50mW(300Ω,THD+N<1%) |
output amplitude |
3.2Vrms |
| distortion plus noise |
<0.0008%(1kHz/-6dB @ 32Ω) |
signal-to-noise ratio |
≥ 122dB (A-weighted) |
| frequency response |
20Hz ~ 50kHz: attenuation <0.8dB |
bottom noise |
<2.7uV(A weight) |
| 20Hz ~ 20KHz: attenuation <0.1dB |
