Pro-Ject Pre Box S2 Digital DAC/Preamp & Stream Box S2 Ultra Streamer

Pre Box S2 Features

• Pre-amplifier with built-in DAC
• High-end ESS Sabre ESS9038 DAC chip
• Proprietary clock circuity design
• Jitter as low as 100 Femtoseconds
• Organic polymer capacitors and thin-film miniMELF resistors
• MQA audio files compatible
• Roon-ready product
• Hi-Res certified product
• DSD64, DSD128, DSD256 & DSD512 (DoP)
• Up to 24-bit / 192kHz for optical & coax inputs
• Seven selectable digital filters
• One proprietary optimum transient digital filter
• Headphone output on the front (6.3mm)
• Dual-mono construction
• User-friendly screen and operating system
• Gold-plated four layer PCB
• Premium S2 chassis
• Available in black or silver

   

Stream Box S2 Ultra

• High resolution network bridge
• Audio optimized USB A output
• Multi-room enabled
• Dual USB A input for external storage
• TIDAL supported
• Spotify Connect
• Network-enables any modern DAC with USB input
• Internet Radio
• DLNA enabled
• Bypasses all audio formats to the DAC
• Cleans up the audio signal from a PC
• Roon Ready (in progress)
• Shairport
• Bluetooth
• Uses dedicated power supplies
• HDMI video output
• Controllable via smart devices and PC/Laptop
• New control app!
• Ethernet and WiFi connectivity

Video

Awards

"Pro-Ject’s Pre Box S2 Digital offers a wealth of audiophile tweakery but its emphasis on USB ties it primarily – but not exclusively – to desktop and laptop PCs. On the other hand, USB hook-up means the S2 is still a portable option for laptop users, and it doesn’t need a battery. For the price, its sound performance is impeccable, combining clarity and precision with an attractive warmth and impressive sense of space."

Click here to read the full review

Stream Box S2 Ultra

Audio Formats	PCM 32bit/352.8kHz, DSD256
Internet Radio	Shoutcast
Streaming Services	TIDAL, Spotify
Supported data protocols	RAAT, Shairport, DLNA
Multi-room	Up to six devices
Inputs	2 x USB A
	Micro USB B (PC-Detox)
	Network (Ethernet, WiFi)
Outputs	Audio optimized USB A
	HDMI (video)
Controllable via	App, Web Browser, Roon
Weight	375 g (without power supply)
Dimensions (WxHxD)	105 x 37 x 105 mm

Pre Box S2 Digital Specs

DAC:	2x ESS9038Q2M 32-bit PCM 768kHz / DSD512
Digital Inputs:	1x Coax (S/PDIF) 2x Optical (TOSlink®) 1x USB B
Headphone Amp Chip:	ESS9062
Sampling Rates:	32kHz 44.1kHz 48kHz 88.2kHz 96kHz 176.2kHz 192kHz 352.8kHz 384kHz 768kHz
DSD Support:	DSD64 DSD128 DSD256 DSD512
MQA Support:	Full MQA Unfolding by Hardware
Filter Settings:	7x Selectable
Frequency Response:	20Hz - 20kHz
THD:	0.0003%
Analogue Outputs:	1x Headphone (6.35mm Jack) 1x Variable Out (RCA)
Dynamic Range:	124dBA
Output Voltage:	2.05 Veff
Power Consumption:	5V. Micro USB
Dimensions:	103 x 36 x 103mm
Weight:	600g (Without PSU)