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Fiio K3 vs. Fiio K5 Pro + 3
Tone/balance controller
Bass control
Wireless connection
None
None
None
Bluetooth
High resolution audio formats
DSD
DSD
DSD
DSD
Analogue 3.5mm input (Aux)
0 ​
0 ​
0 ​
Analogue RCA stereo inputs
1 pair
0 pair
0 pair
0 pair
Analogue RCA stereo outputs
1 pair
0 pair
1 pair
0 pair
Balanced input (analogue) XLR
0 pair
0 pair
0 pair
Balanced input digital XLR (AES / EBU)
0 ​
0 ​
0 ​
Balanced output (analogue) XLR
0 pair
0 pair
0 pair
Balanced output 4.4mm Pentaconn
Balanced output digital XLR (AES / EBU)
0 ​
0 ​
0 ​
Digital coaxial input (S/PDIF)
1 ​
1 ​
1 ​
0 ​
Digital coaxial output (S/PDIF)
1 ​
0 ​
0 ​
0 ​
Digital optical input (S/PDIF)
1 ​
1 ​
1 ​
0 ​
Digital optical output (S/PDIF)
1 ​
0 ​
0 ​
0 ​
Firewire
No
No
No
No
No
Headphone output
Yes
Yes
Yes
Yes
Yes
Headphone output (3.5 mm)
2 ​
1 ​
Headphone output (Jack plug 6.3 mm/1/4
1 ​
0 ​
0 ​
Output power per channel
1500 mW
720 mW
240 mW
Pre output (full range)
No
Yes
Pre-output (RCA / XLR)
Tele plug 6.3mm input
0 ​
1 ​
USB
Yes
Yes
Yes
Yes
Yes
Type of USB connector
USB (Type C)
USB (Type C)
USB powered (only via USB)
No
Yes
No
Yes
Available colours
Black
Black
Black, White, Silver
Black, Silver
Black, Blue
Dimensions (WxHxD)
Depth
58 mm
55 mm
60 mm
146 mm
11.1 mm
Height
130 mm
22 mm
35 mm
72 mm
Width
70 mm
120.5 mm
82 mm
98 mm
32 mm
Product weight
0.82 kg
0.44 kg
0.18 kg
0.04 kg
Features
Volume control
Display, Volume control
Display, Volume control
Built-in D/A converter
Yes
Yes
Yes
Yes
Yes
D/A audio
32 bit / 768 kHz
32 bit / 768 kHz
24 bit / 192 kHz
32 bit / 384 kHz
DAC (audio chip)
AKM AK4452
AKM AK4493
Cirrus Logic CS4398
Can be used as a preamplifier (Preamp)
Yes
Yes
Release year
2019
2015
2016
2019
Battery operated
No
No
Yes
No
Yes
Separate power connector (mains)
Via AC adapter
No
Via AC adapter
AC/DC-Voltage (5v/12v/18v/24v/36v)
15 V