The Pre Box RS2 Digital is the big brother of our award-winning and revolutionary Pre Box S2 Digital. It uses the same great sounding DAC chips as the S2 version, proving once again that the Pre Box S2 Digital was already at the pinnacle of high-end DACs and absolutely beyond its competition. Based on the same core design principles, the feature set is expanded and taken to new heights. The result is a fantastic sounding and very versatile snare. The perfect companion for top quality amplifiers and high end speakers alike!

The RS2 Digital Pre Box is a DAC and preamplifier that uses a dual-mono configuration of ESS Saber's highest class D/A converters. ESS9038Q2M chips provide the highest sound quality in high-end circuitry at an affordable price. Unlike most DACs in this price range, the RS2 Digital Pre Box includes dual DACs and separate signal paths for left and right channels. Also thanks to these converters, the Pro Box RS2 Digital supports files up to 32bit / 768kHz in PCM and DSD (up to DSD512) formats via USB, covering any digital file you can buy or stream.

The analog output is a buffer that is both solid state and high quality tube. Thus, the client can choose which of the options is preferred. The Pre Box has eight digital filters. One of these is the proprietary Optimum Transient Digital Filter from the makers of MQA. With these filters, the listener can customize the sound to fit their own preferences. Pre Box RS2 Digital comes with full HW and SW support for MQA (Master Quality Authenticated) technology.

In the Pre Box, the USB input signal is processed by a powerful XMOS multi-core microcontroller with an advanced RISC Multi-Core architecture. The Altera MAX II (Complex Programmable Logic Device) CPLD is used for re-marking, which together with the XMOS microcontroller provides high-quality processing of both classic and MQA technology. For the ideal use of this technology, it is best to connect the Pre Box to our Stream Box S2 Ultra in conjunction with the TIDAL service. You can also enjoy MQA quality by connecting it to our revolutionary new CD transport, the CD Box RS2 T. The CD Box RS2 T can be connected to the Pre Box via a reliable I²S differential bus via the HDMI connector, where the Pre Box RS2 Digital also provides the master clock (16.9344 MHz).

The headphone amp is the ultimate design. No compromises. There are no coupling capacitors. Not even on the way out. The entire amplifier is coupled to direct current. A very fast DC servo ensures that there is no DC voltage at the output. Its output power is suitable for all types of headphones.

The package includes a premium quality aluminum remote control and the Pre Box RS2 Digital is available in a high quality black or silver aluminum case. The large display screen on the front shows all relevant information in an easy-to-read, clean and structured way. Menu navigation is very responsive and fast, allowing you to configure the unit to your preferences in a matter of seconds.

Features:

Double mono DAC: 2x ESS9038Q2M.

Optionally selectable high-quality upsampling of PCM and/or MQA content with proprietary filtering.

Advanced reclocking powered by the new XMOS chip with Mulit-Core RISC architecture

9 digital inputs: i²S HDMI, AES/EBU, Toslink, S/PDIF coaxial, Bluetooth v4.0.

Analogue: XLR/RCA/headphone pre-out, RCA input.

Fully balanced double mono design.

Output stage switchable between 6922 tube and solid state.

Ultra-linear and ultra low noise level.

New high-quality display with a fast and responsive user interface design.

High quality aluminum remote control included.

Available in silver and black.

2x ESS9038Q2M DAC (dual mono - 32bit/768kHz/DSD512).

Digital inputs 1 x USB 2.0 Audio 32/768 + DoP and Native-DSD up to DSD512.

1 x HDMI I2S to RS2 T CD Caddy.

2 x Optical S/PDIF 24/192.

1 x S/PDIF coaxial 24/192.

1x AES/EBU balanced 24/192.

MQA Full hardware-deployed MQA support.

Line level input 1 pair of XLR.

1 RCA Pair

Input impedance 15 kOhm.

Output impedance 180 Ohm solid state, 220 Ohm tube.

Pre-out analog outputs (XLR and RCA), headphones (6.35mm jack).

Headphone output power 90 mW / 300 Ohm; 245mW / 32 Ohm; 90mW / 8 Ohm.

THD+N (20Hz - 20kHz) < 0.006% solid state / 0.017% tube @ 2V RMS, 1 kHz.

Masterclock output 16.9344MHz for CD Box RS2 T.

Bluetooth version Fully integrated Bluetooth® v4.0.

Bluetooth codecs SBC, AAC, AptX.

Discrete and balanced output buffer, solid state and tube.

4 x 6922EH tubes.

Power supply 20V/3A DC, 110-240V/50, 60 Hz.

Power consumption max. 1.2A DC, <0.5W standby.

Dimensions Width x Height x Depth (with plugs) 206 x 72 x 222 mm.

Weight 1710 g without power supply.