Categories
Impartial price comparison
Deltaco USB-51 vs. Universal Audio Apollo Twin Duo MK2 + 9
Noise level (SNR)
122 dB
130 dB
116 dB
Analog 3.5mm output (not headphones)
1 ​
0 ​
3 ​
0 ​
4 ​
Analogue RCA outputs
0 pair
0 pair
0 pair
2 pair
0 pair
Headphone output
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Headphone output (3.5 mm)
0 ​
1 ​
1 ​
1 ​
1 ​
Headphone output (Jack plug 6.3 mm/1/4
1 ​
0 ​
0 ​
0 ​
1 ​
0 ​
Jack Plug input (not microphone / pedal)
3 ​
0 ​
0 ​
1 ​
0 ​
Jack Plug output (6,3 mm/1/4
4 ​
0 ​
0 ​
0 ​
0 ​
Microphone input
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Jack Plug (3.5mm)
1 ​
1 ​
1 ​
Jack plug (6.3 mm/1/4)
0 ​
0 ​
0 ​
XLR
2 ​
0 ​
2 ​
0 ​
Other connectors
Analogue 3.5mm input/Line-in
Digital optical input (S/PDIF), Balanced input (digital) XLR, Firewire, Thunderbolt
Analogue 3.5mm input/Line-in, Digital optical output (S/PDIF)
Balanced input (digital) XLR, MIDI
Digital optical input (S/PDIF), Digital optical output (S/PDIF)
Thunderbolt
Digital optical input (S/PDIF), Analogue 3.5mm input/Line-in, Digital optical output (S/PDIF)
MIDI
USB
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Features
Suitable for PA use/Rack mount, Support for ADAT/Lightpipe
3D sound support, DirectSound support, Support for 5.1 surround sound
Suitable for PA use/Rack mount
DirectSound support, Support for 7.1 surround sound
Suitable for PA use/Rack mount
3D sound support, DirectSound support, Support for ASIO, Suitable for PA use/Rack mount, EAX support, Support for 5.1 surround sound
D/A audio
24 bit / 192 kHz
32 bit / 384 kHz
24 bit / 192 kHz
24 bit / 96 kHz
24 bit / 192 kHz
24 bit / 192 kHz
24 bit / 96 kHz
Placement
External
External
Internal
External
External
External
Internal
External
Interface
PCI Express
PCI Express
Power management
Mains
USB
USB
USB
USB
Mains