Acuhorn LUSSO review in hifiknights magazine.

1 Bit Discrete DAC & The Grand Plate Tube Stage

pure class-A single ended tube stage 

type 300B, PX25, PX4, 45, 2A3 DHT triode

4 pin base tube socket U4A 

input voltage mains full range 120-240Vac

maximum input power 40W

2 signal input: USB type B and S/PDIF coax

1 audio output RCA terminal rhodium

internal cable OCC copper

weight 1,6kg

dimensions W 320 x D 200 x H 28mm

All digital file audio are conversion by hardware processor on board 

or computer software HQPlayer, Foobar2000 or similar player for DSD. 

Compatible with all formats music WAV, FLAC, ALAC, DSF 

and lossless audio streaming Apple, Qobuz, Spotify, TIDAL e.t.c.

The DAC's processes are all automatic, only manual control:

select filament voltage 5 Volt, 4 Volt or 2.5Volt

select between the USB audio and SPDIF inputs

The offer does not include tubes