© Pro-Ject Audio Systems · Pro-Ject Pre Box RS2 Digital · Revision 2019.04.18
5
Front panel
Headphone connection
Connect the headphones to the socket on the front panel (Jack 6,3mm). The rear outputs are not
disconnected when headphones are in use.
Volume
Adjust the volume to the desired level, using the large knob on the right side of the front panel.
Menu
Use any button on the right side of the unit to enter Menu, then use buttons Up and Down to browse in
Menu, button Right enters subpage or activate selected item, button Left return to previous page or step out
of Menu.
Display returns back to main page after 10s of inactivity.
INPUT : Direct access to inputs. See separate chapter about inputs.
UPSAMPLE :
OFF: upsampling inactive
Recommended for playing native sample rates. In such case is also recommended to disable cross
fade and start/stop fade if available in player.
MQA: only MQA data are upsampled
ON :all data from digital inputs are upsampled to 384/352kHz
Recommended settings for playing MQA and/or tracks with various sample rate
RECLOCKING : is a technology which changes internal clock synchronization in the unit. Overall effect on
jitter is insignificant, however in spectrum analysis of signal are visible changes mainly at higher frequency
sampling rates (384/352 and above) which could affect listener experience.
TUBE STAGE: OFF, ON (Tube stage needs heat up period after start of the unit - tube symbol is blinking)
DIGITAL FILTER
When playing MQA files, user´s filter setting is not active, MQA filter is always used. MQA filter is
custom made for our DAC to ensure best possible MQA experience
Filter Filter name
Remarks
1
Linear phase fast
Pre and post echo
2
Linear phase slow
Minimal echo, original sound
3
Minimum phase fast
No pre echo, more post echo than linear phase filters
