Soekris Engineering ApS dac1541 Users Manual
www.soekris.dk 6 July 2017
Volume Knob: The volume LED display indicates current volume, from -80 dB to +10 dB. The
volume knob is using a digital encoder to set the volume level digitally from -80 dB to +10 dB in
precise 1 dB steps. If you connect the Line Out to a system with a volume knob you might want to
set the dac1541 Line Out volume startup level to a fixed 0 dB, you can do that by selecting Line
Out, turning the volume up to -4 or higher, then store the startup setting by pressing and holding the
“FILTER” button for 4 seconds. The volume control is then inactive, it can be made active again by
holding the “FILTER” button for 4 seconds again.
“OUTPUT” button: Selects where the audio signal will go, when the “LINE” LED is on it will go
to the Line Out on the RCA Phone sockets and the balanced XLR sockets, when the “PHONES”
LED is on it will go to Headphones Jacks on the front. The output not selected will be muted.
6.3 mm Jack: is for connecting to a set of headphones, almost any type can be used, the loading
impedance should be minimum 16 ohm, high impedance types work very well. The dac1541 is able
to output minimum 6.5V RMS into 32 ohm or higher, in power that is 1300 mW into 32 ohm, 400
mW into 100 ohm or 140 mW into 300 ohm.
4 pins XLR socket: is for connecting to a set of balanced headphones, almost any type can be
used, the loading impedance should be minimum 32 ohm, high impedance types work very well.
The dac1541 is able to output minimum 13V RMS into 50 ohm or higher, in power that is 3400
mW into 50 ohm, 1700 mW into 100 ohm, 560 mW into 300 ohm or 280 mW into 600 ohm. The 4
pins XLR socket pinout is the de facto standard as used by Sennheiser and others.
Remote Control: The dac1541 have support for using a remote controller to adjust the volume
level and to select input source. The remote need to be an Apple remote or a compatible one. The
dac1541 as default will not be locked to a remote, but can be locked to a specific remote using its
device code. To lock the dac1541 to a remote, first press the “XFEED” button for 4 seconds until
the “CLIP” indicator lights, then press any button on the remote. If you don’t press any button on
the remote before the “CLIP” indicator goes off then the dac1541 will go back to its default setting
of not being locked to a specific remote. You then also need to store the new remote setting by
pressing the “FILTER” button for 4 seconds.
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