he Esoteric D-07X is a high-end 32-bit dual-mono Digital-to-Analog Converter (DAC) and digital preamplifier. Designed as a trickle-down evolution of Esoteric’s flagship K-series digital players, it pairs a dual-mono Asahi Kasei DAC configuration with flexible digital processing modes and a built-in headphone amplifier.

Esoteric D-07X 32-bit Dual-Mono DAC. Source : The Absolute Sound

Audio Architecture & Processing

• Dual-Mono Topology: Uses two 32-bit AKM AK4399 DAC chips configured in parallel per channel for improved channel separation and lower noise floor.
• PCM Upsampling: Selectable PCM integer upsampling (2×, 4×, or 8× up to 352.8 kHz / 384 kHz) alongside PCM-to-DSD conversion modes.
• Digital Filters: Includes four selectable PCM digital filters (two short-delay types and two sharp/slow roll-off types) plus an OFF mode for raw playback.
• Preamplifier & Output Stage: Fully balanced analog circuit with integrated digital volume control, allowing direct connection to power amplifiers or active monitors.

Technical Specifications

CategorySpecification DetailsDAC ArchitectureDual-mono 32-bit (AKM AK4399 per channel)Digital Inputs1x USB Type-B, 1x AES/EBU (XLR), 2x Coaxial (RCA), 1x Optical (Toslink)

USB SupportAsynchronous USB up to 24-bit/192kHz PCM and 2.8MHz DSD (DoP)

S/PDIF / AES SupportPCM up to 24-bit/192kHz

Clock SynchronizationBNC Clock Input (10 MHz, 22.5792 MHz, 24.576 MHz, 44.1/48/88.2/96/176.4/192 kHz)

Analog Outputs1x Balanced XLR, 1x Unbalanced RCA

Output LevelXLR: 2.45 Vrms / RCA: 2.45 Vrms

Frequency Response5 Hz – 55 kHz (-3 dB)

Signal-to-Noise Ratio (S/N)115 dB

Total Harmonic Distortion0.0015% (1 kHz)

Dimensions (W x H x D)445 mm x 131 mm x 358 mm (17.5"×5.1"×14.1")

Weight10.4 kg (22.9 lbs)