Projekt Nostromo Wolf 1 DAC + Nostromo AC-DC Adapter, 2011, made in Poland

 

Link: nostromo | highfidelity | kropka.audio

Specification
sigma-delta architecture
Frequency Response – N/A
Signal to Noise Ratio (SNR) ≥125dB
Total harmonic distortion (THD) -100dB@48kHz
Wolfson WM8741 DAC up to 32 bit / 192 kHz (optical up to 96 kHz) sample, low jitter clock recovery
Wolfson WM8804 SPDIF receiver
2.2 Vrms output
WIMA capacitors, VISHAY DRALORIC precision resistors, gold-plated RCA sockets from ProSingal.

In/Out:
IN – 2 x optical, 2x coaxial
OUT – 2 x RCA analog (stereo)

Switches:
optical/optical/coaxial/coaxial
FSEL digital filter selection
OSR oversampling rate selection
Power

Projekt Nostromo – Poland
Price (retail): ± 750 PLN

The filter switch is responsible for the settings:

Position I:

* response 1 Linear phase "soft-knee" filter (Medium / High rate)

* response 1 Linear phase half-band filter (Low rate)

Position II:

* response 2 Minimum phase "soft-knee" filter (Medium / High rate)

* response 4 Linear phase apodizing filter (Low rate)

Position  III:

* response 3 Linear phase "brickwall" filter (Medium / High rate)

* response 5 Minimum phase apodizing filter (low rate)