Pro‑Ject Pre Box S3

Pro‑Ject Pre Box S3 main image

Full Specifications

launch

monthJanuary
year2026
statusAvailable

dimensions

size206 × 55 × 153 mm (176 mm with sockets)
weight1020

features

typeHi‑Fi preamplifier / DAC
compatibilityMM turntables, TVs with HDMI eARC, USB‑C digital sources, Bluetooth devices, power amplifiers, active speakers
detailsStereo analogue preamplifier High‑resolution 24‑bit/192 kHz DAC Integrated Moving Magnet (MM) phono stage HDMI eARC for TV audio Bluetooth 5.0 streaming with aptX & aptX HD Headphone amplifier Subwoofer output

materials

colors

connectivity

bluetooth5.0 (aptX, aptX HD, A2DP)
codecsaptX, aptX HD (wireless)
wired_connectorAsynchronous USB‑C (digital audio input) RCA analogue inputs (2× line, 1× MM phono) HDMI eARC input Coaxial S/PDIF Optical Toslink 2× S/PDIF

battery

chargingExternal 18 V/500 mA DC power supply (100‑240 V AC)

audio

driversInternal DAC based on Cirrus Logic CS4344 24‑bit/192 kHz
technologiesHigh‑resolution PCM DAC, motor‑driven analog volume control

tracking

uwbNo
bleYes (via Bluetooth 5.0)
beeperNo
replaceable_batteryNo

controls

indicators

ledsPower / status indicators

platform_features

ports

descriptionRCA analogue I/O USB‑C audio input HDMI eARC Coaxial & Optical S/PDIF 6.3 mm headphone output Subwoofer RCA 12 V trigger output RS232 control interface

standards

sustainability

materialsAluminium chassis for durability; standby power <0.5 W