AUNE BU2 ES9318 Portable Bluetooth Type-C 3.5mm+2.5mm Balanced DAC/AMP

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Features:
★Master Tape Level Decoding.
★High-resolution 32-Bit/768kHz PCM and native DSD512 decoding support.
★Dual high-performance ES9318 DAC chips.
★Four independent headphone amplifiers.
★Natural presentation with Clock Synchronisation Technology.
★Multi-function volume knob.
★Precise volume adjustment with R2R ladder network.
★Reference-grade natural sound tuning.
★Dual headphone output ports, 3.5mm single-ended and 2.5mm balanced.
★USB Type-C input interface.
★Bluetooth input support.

Latest Generation ESS Sabre DAC Chip
Aune BU2 adopts a high-performance Dual DAC chipset featuring two latest-generation ES9318 DAC chips from ESS Sabre Technologies.

Independent Amplifier Architecture For Ultimate Power
Aune BU2 is a powerful device. It adopts a Low-ripple positive and negative pump power circuit which Aune implemented previously in the B1 headphone amp.

Low-Jitter Crystal Oscillators For Digital Audio Clock Synchronisation
Aune Audio is a tech giant behind many successful desktop-grade clock systems. They have implemented two low-jitter 45M/49M crystal oscillators which are synchronized with the DAC chip by the USB chip, ensuring a properly synced audio chain in your pocket.

Accurate Volume Adjustment using R2R Volume Technology
Aune BU2 has dynamic volume control technology consisting of electronic switches and an R2R ladder network. At lower volume levels, the R2R controls the subtle volume with a precisely matched resistance array. This helps in accurate volume adjustment for different impedance IEMs/Headphones.

Specifications:
Output level: 1.8Vrms(3.5mm), 3.6Vrms(2.5mm)
THD+N: 0.000145%
SNR: -120dB
Frequency response range: 20Hz-20kHz
Output Power(2.5mm Bal): Up to 265mW @ 32Ω
Output Power(3.5mm SE): 100mW @ 32Ω