Mechanics
The DSP50x uses a stainless steel chassis with a solid 10 mm aluminium front plate.

Power Supply
A powerful non-switching power supply is used. All sensitive voltages have their own regulators for best jitter performance at the digital outputs. The power switch activates a semiconductor relay which only switches on or off at zero crossings of the mains voltage. This assures a glitch free power switching. The two mains transformers are toroidal types. Mains voltage selection is done automatically by measuring the mains voltage before power is applied to the rest of the electronics.

Synchronization
An internal high precision / low jitter clock generator is responsible for clocking the digital output section. The sampling frequency of that generator can be user selected between the values of 88.2kHz, 96kHz, 176.4kHz, 192kHz. The input signals are converted to the sampling frequency selected.

Digital Inputs
There are a total of five inputs:

• AES/EBU or S/PDIF via XLR, Toslink and RCA sockets
• UPnP / DLNA via Ethernet
• USB
• Roon Ready

Accepted formats: PCM 44.1kHz up to 384 kHz, DSD 64x / 128x.
Future formats can be accommodated for via software updates.

Signal Processing
The DSP50x has a digital signal processing chip built in (DSP).
The following DSP algorithms are currently implemented or implemented soon:

• Room Equalizer – to suppress room modes for a decent bass reproduction.
• Creative Equalizer – a tone control with low boost/cut, high boost/cut and mid boost/cut. Very useful to correct those recordings which do not quite sound right.
• De-Essing – the automatic removal of overly bright sibilances from human voices. The sibilance effect can be more or less pronounced depending on your speakers or room acoustics.
• Constant Volume – adjusts the audio volume (loudness) to a constant value across all tracks played. Useful for “party mode” when the volume control should stay untouched.
• Vinyl Emulation – get that special sonic character of a record player based playback chain. We also employ an emulation of the DMM-CD procedure offered by the Stockfisch label.
• Crosstalk Cancelling (XTC) – for the playback of dummy head recordings or live recordings via speakers for an incredible live sensation. Dummy head recordings usually are listened to via headphones because they only work properly if the left channel goes to the left ear only and the right channel to the right ear only. With speakers this is difficult to achive as the left channel goes to the left and the right ear. But with some clever signal processing of the speaker channels is is possible to suppress the crosstalk, i.e. the audio going from the left speaker to the right ear and vice versa. If that works properly then the recording sounds as if one would be in the space where the recording has taken place. All the reverberation and 3D representation of the sound sources is there.(For speaker based playback only.)
• Loudness Control – a listening volume dependent equalization of the audio.
• Headphone Equalizer – to adapt any headphone to the listener’s ears in terms of frequency response.

Power
Mains voltage: 100…120 V or 200…240 V
Fuse rating: 500 mA slow blow at 100…120 V, 250 mA slow blow at 200…240 V
Power consumption: 15 VA max.
Power consumption in standby: 0.5 VA max.

Size DSP501
Depth: 30 cm
Width: 18,8 cm
Height: 6,6 cm
Height with feet: 7,2 cm

Size DSP502
Depth: 30 cm
Width: 45 cm
Height: 6,6 cm
Height including feet: 7,4 cm

Size Remote
Depth: 2,1 cm
Width: 4,5 cm
Height: 16,6 cm
Available Color
Silver, Black

Digital Inputs
(1) XLR connector
(1) RCA connector
(1) TOSLINK connector (optical)
(1) USB type B connector
(1) RJ45 Ethernet connector
All inputs accept professional or consumer standard , i.e. accept AES/EBU or S/PDIF signals
.

Digital Outputs
(2) RCA Connectors
(2) XLR connectors
One pair of RCA and XLR connectors carry a stereo audio channel. Two stereo channels
can be output.

Analog Outputs
None

Headphone Output
None