sDP-1000EX from sOTM Audio is a high-end D/A converter and pre-amplifier with a USB audio function which supports DSD playback and has a battery power supply. 

USB audio uses an asynchronous mode to connect the digital audio source device such as a PC. It can playback a 32 bit/192KHz PCM signal (maximum) and DSD signal. In addition, the sound quality from the input source can be improved by the specially designed high performance clock and 32 bit up-sampler circuit.

All audio circuit parts including the DAC and preamplifier volume control are fully balanced circuits.  Not a single coupling capacitor is used in the audio signal path.

It has two battery packs installed, with one battery providing power whilst the other charges and switches between these functions automatically, so there is no additional work needed once it’s connected to a power supply for charging the battery. The sDP-1000EX will work continuously via battery power only.

Features

SB input

USB specification 2.0 or higher

USB audio class 2.0

32bit/192KHz PCM & DSD playback

Native ASIO support

Optical, Coaxial, AES/EBU input

Max bit-depth : 24bit

Sampling rate : 32KHz, 44.1KHz, 48KHz, 88.2KHz, 96KHz, 176.4KHz, 192KHz

Impedance

Coaxial, BNC : 75Ω

AES/EBU : 110Ω

Balanced input

Max input voltage : 4 Vrms

Input impedance : > 10kΩ

Frequency range : 20~20KHz @ ±0.1dB

Unbalanced input

Max input voltage : 4 Vrms

Input impedance : > 10kΩ

Frequency range : 20~20KHz @ ±0.1dB

Balanced output

Output voltage at 0dB : 3.8 Vrms ±5%

Output impedance : 47Ω ±5%

Frequency range : 20~20KHz @ ±0.1dB

THD : < 0.003% @ 1KHz, 0dB

Unbalanced output

Output voltage at 0dB : 3.8 Vrms ±5%

Output impedance : 47Ω ±5%

Frequency range : 20~20KHz @ ±0.1dB

THD : < 0.003% @ 1KHz, 0dB

Volume control

Setting range : -75 ~ +10dB, 0.5dB step