Box Design S2 Series Headphone Preamplifiers
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Digital stereo preamplifier with D/A converter. Dual Mono circuitry. Dual Saber ESS9038 32BIT/768khZ D/A converter. MQA and DSD decoders up to 512. Circuitry with low noise components. Proprietary transient digital filter and clock circuitry. 7 selectable digital filters. 3 digital inputs, coaxial, optical and USB-B, 1 RCA output. Headphone amplifier with ESS9063 and 6.3mm output. Golden connectors. Dimensions: 103x36x103 (WxHxD).
Main features:
Dual ESS Saber ESS9038 high-end DACs
Proprietary clock circuit
Organic polymer capacitors and miniMELF resistors
MQA decoding
DSD64, DSD128, DSD256 & DSD512 (DSD over PCM)
Decoding up to 24bit/192kHz for optical and coaxial inputs
7 selectable digital filters.
1 “Optimum Transient” proprietary digital filter
6.3mm headphone output
Synchronization of all internal oscillators
Jitter less than 100 Femtoseconds
Gold plated 4 layer printed circuit board
Container in aluminium/metal in black and silver colours
Mini remote control included.
Technical features:
3 inputs, 1x coax (S/PDIF), 1x optical, USB B
D/A converters: 2x ESS9038Q2M 32-bit PCM 768kHz / DSD512
Headphone amplifier: ESS9602
Sampling rates: 32/44.1/48/88.2/96/176.2/192/352.8/384/768kHz
DSD support: DSD64, DSD128, DSD256 and DSD512
MQA support
7 selectable filters
Frequency Response: 20Hz - 20kHz
Analog outputs: 6.3mm headphone, 1x variable RCA
Output voltage: 2.05 Veff
Headphone output: 68mW (32Ohms)
Distortion THD: 0.0003%
Dynamic Range: 124dBA
Current consumption: 5V, micro USB
Dimensions (WxHxL): 103x36x103 mm
Weight: 600g without power supply
