Back to Sforzato Products

Sforzato DSP−050EX Network player, LAN DAC, USB DAC


RCA, XLR (2-hot, 3-cold), each approximately 2V rms
LAN SFP 1 system, USB type‐B 1 system
Clock Input
BNC terminal 50Ω 10MHz
390 (W) x 327 (D) x 85 (H) mm

Sforzato DSP−050EX is equipped with a USB‐B terminal as standard equipment.
It can be used not only as a Network Player and LAN DAC, but also as a USB DAC.
LAN supports DLNA, UPnP (Open Home), and Diretta. USB will soon support Bulk Pet and JPlay.

Supported Formats

44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8KHz, 384kHz, 705.6kHz, 768kHz / 16, 24, 32 bit (fixed/floating)

2.8MHz, 5.6MHz, 11.2MHz, 22.5MHz 1bit (dsf, diff)

Supports gapless playback in all formats.

External Clock

It does not have a clock oscillator inside the housing, and a dedicated external clock is attached. A high‐performance TCXO (temperature‐compensated crystal oscillator) with ultra‐low near‐phase noise of −120dBc / Hz @ 10Hz with the clock architecture deploying a specialized IC that achieves jitter below 100 fs (1 femtosecond = 1/1000 of a picosecond).

Power for the external clock is supplied from the rear panel of the main unit. Of course, you can enjoy higher quality sound by using a higher PMC clock.

Sforzato DSP‐050EX External Clock

D/A Converter

The latest ES9038Pro is used for the D/A converter in monaural, one for each channel. The ESS DAC no longer relies on internal jitter removal, running in perfect sync with signal input. To fully demonstrate the performance of the 9038Pro, which has about four times the current output of the 9018S, a large‐scale IV conversion circuit reproduces a vast sound field and a precise and delicate sound image.

Thorough elimination of jitter

All digital audio, including network players, operate relative to the master clock when converting digital data to analog, so the quality of the clock is directly linked to sound quality. In particular, noise near the transmission frequency of the clock cannot be removed by the PLL or other circuits in the subsequent stage, so the performance of the transmitter directly affects the sound quality. In DSP‐050EX, the ultra‐low near‐phase noise clock creates a master clock (the heartbeat of digital audio) together with the ultra‐low jitter PLL.

Power supply with a margin

Large‐capacity toroidal transformers with separate digital and analog power supplies and ultra‐high‐speed, ultra‐low noise Schottky diodes contribute to powerful and soulful music playback. Inside the main unit, a high‐performance low‐noise LDO LT1763 is used for the digital part, and POL (Point of Load) that regulates in the immediate vicinity of the required part is thoroughly implemented.

Discerning internal wiring and output terminals

With the cooperation of Sekiguchi Machinery Sales Co., Ltd. (Acoustic Revive), the internal wiring uses an elliptical single‐wire PC‐triple C wire. The purity of the power supply and signal is ensured by using a laborious wiring method that does not use a connector as much as possible. Two output systems, balanced XLR and unbalanced RCA, are available. Both use Hi‐End terminals.

Thorough noise countermeasures

The board is a double‐sided 6‐layer board. The front and back surfaces are widely ground planes, and most of the digital signals are wired to the inner layer. Noise is suppressed to the utmost by the strong shielding effect. Furthermore, non‐magnetic electromagnetic noise removal sheets and Finemet beads are placed in place to take thorough noise countermeasures.

Software updates

By inserting the USB memory into the USB‐A terminal provided on the rear panel and performing the update operation, you can easily update the software by yourself. It will continue to evolve even after you purchase it.