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Sonifex RB-ADDA vs. Fiio K3 + 1
Tone/balance controller
Bass control
Wireless connection
None
High resolution audio formats
DSD
Analogue 3.5mm input (Aux)
Analogue RCA stereo inputs
Analogue RCA stereo outputs
Balanced input (analogue) XLR
Balanced input digital XLR (AES / EBU)
Balanced output (analogue) XLR
Balanced output 4.4mm Pentaconn
Balanced output digital XLR (AES / EBU)
Digital coaxial input (S/PDIF)
Digital coaxial output (S/PDIF)
1 ​
Digital optical input (S/PDIF)
Digital optical output (S/PDIF)
1 ​
Firewire
No
Headphone output
Yes
Yes
Headphone output (3.5 mm)
1 ​
Headphone output (Jack plug 6.3 mm/1/4
Output power per channel
Pre output (full range)
Tele plug 6.3mm input
USB
Yes
Yes
Type of USB connector
USB (Type C)
USB powered (only via USB)
Available colours
Black
Black, Grey, Blue, Red
Dimensions (WxHxD)
Depth
58 mm
Height
Width
70 mm
Product weight
1.6 kg
0.82 kg
0.02 kg
Features
Suitable for PA use/Rack mount
Volume control
Built-in D/A converter
Yes
Yes
D/A audio
24 bit / 96 kHz
DAC (audio chip)
AKM AK4452
Can be used as a preamplifier (Preamp)
No
Release year
2011
2017
Battery operated
No
Separate power connector (mains)