ESX QE812SP

The ESX QUANTUM QE812SP combines a powerful 12-channel high-end sound processor with a standalone Full HD audio player. Building on the award-winning QL812SP, ESX has expanded its proven DSP technology to include the ability to play high-resolution music files directly from a USB storage device—without the need for an additional radio or external music player.

Inside, two powerful Analog Devices ADAU1452 DSP processors, each with 32-bit architecture and running at 294 MHz, are at work. High-quality AKM Velvet Sound signal converters ensure precise and exceptionally low-noise signal processing. Thanks to extensive adjustment options for the equalizer, crossovers, time alignment, and phase adjustment, the sound can be individually tailored to the vehicle and the installed speakers.

The built-in HD audio player supports numerous music formats, including FLAC, WAV, AIFF, and high-resolution DSD files. Playback can be conveniently controlled using the included Bluetooth remote control, the ESX Music app, or the optional RC-QE remote control.

With eight analog RCA inputs, eight high-level inputs, digital S/PDIF connections, Bluetooth audio streaming, and twelve high-quality RCA outputs, the QE812SP offers versatile connectivity options for high-end car audio systems.

Technical Specifications

General Characteristics

• Model: ESX QUANTUM QE812SP

• Device Type: Digital Full HD Audio Player with 12-Channel DSP Sound Processor

• DSP processors: 2 × Analog Devices ADAU1452

• DSP processing power: 2 × 32-bit / 294 MHz

• DSP Audio Processing: 96 kHz

• A/D converter: AKM Velvet Sound Series 5, 32-bit

• D/A converter: AKM Velvet Sound Series 5, 32-bit

• Frequency range: 5 – 45,000 Hz

• Operating voltage: 7.5–17 V DC

• Dimensions according to the German manufacturer's website: 277 × 43 × 155 mm
  
  

Audio Inputs

• 8 × RCA inputs

• 8 × High-Level Inputs with EPS PRO

• High-level input voltage: up to 40 V RMS, according to the manufacturer's product page

• Low-level input sensitivity: 1–6 V RMS

• High-level input sensitivity: 1–15 V RMS or 15–45 V RMS

• 1 × stereo optical input (S/PDIF)

• 1 × coaxial stereo input (S/PDIF)

• Digital S/PDIF resolution: up to 24-bit / 192 kHz

• 1 × Bluetooth stereo input for wireless audio streaming
  
  

Audio Outputs

• 12 × RCA outputs

• Output voltage: 6 V RMS

• Total Harmonic Distortion plus Noise (THD+N) of the RCA outputs: less than 0.0004%

• 1 × RCA video output

• Remote output for controlling external devices
  
  

DSP Functions

• High-pass filter (HPF)

• Low-pass filter (LPF)

• Bandpass filter (BPF)

• Adjustable filter slopes: 6–48 dB/octave

• 12 × 31-band output equalizer

• Equalizer Types: parametric, high-shelf, and low-shelf

• Equalizer adjustment range: ±12 dB

• Equalizer step size: 0.5 dB

• Standard Mode: 10 × 31-band input equalizer

• Expert Mode: 6 × 31-band input equalizer

• Expert Mode: 4 × 31-band staging equalizer

• Runtime correction: 0–20 ms

• Runtime correction increment: 0.01 ms

• Phase Alignment: Normal / Inverted

• Input mixer for custom signal routing

• Subwoofer Volume Control

• Priority Input Mode for Digital Signal Sources

• MODE switch input for automatic preset switching
  
  

Signal Quality

• Analog input signal-to-noise ratio: 111 dB (A-weighted)

• Digital input signal-to-noise ratio: 117 dB (A-weighted)

• Analog input distortion factor: less than 0.001%

• Digital input distortion factor: less than 0.0004%
  
  

Built-in Full HD Audio Player

• Standalone music player for direct playback from USB storage devices

• Supported HD audio formats: DFF, DSF, DSD

• HD audio support: up to 24-bit / 256 kHz, according to the manufacturer

• Uncompressed or lossless formats: WAV, FLAC, APE, AIFF

• Compressed audio formats: MP3, AAC, OGG, WMA, MV

• Supported USB file systems: FAT32, NTFS

• Control via the ESX Music app for iOS and Android

• Operated using the included RC-BT Bluetooth remote control

• Operation via the optional RC-QE wired remote control
  
  

Bluetooth and Controls

• Bluetooth version: 5.0

• Bluetooth profiles: A2DP, AVRCP

• Supported audio codecs: aptX, aptX LL, AAC, SBC

• Built-in Bluetooth receiver with antenna

• DSP Settings via the ESX DSP Toolkit App for iOS and Android

• DSP Configuration Using the ESX Toolkit PC Software

• Wireless Control and Audio Streaming via Bluetooth

• Optional RC-QE control panel with color LCD display
  
  

USB ports

• 1 × USB port for music media

• 1 × USB port for remote control

• 1 × USB port for PC software

• Separate USB port for updates, according to the manufacturer's documentation in English
  
  

Package Contents and Accessories

• ESX QE812SP Sound Processor with Built-in HD Audio Player

• RC-BT Bluetooth Remote Control

• Optional: ESX RC-QE remote control with color LCD display

• Optional accessory: USB storage device for music playback