AUNE BU2 Portable Bluetooth Balanced DAC with Headphone AMP

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. Aune Audio has launched its latest portable DAC+Headphone amplifier, the all-new Aune BU2. It brings high-quality audio performance with dual ES9318 DAC chips and four independent amplifiers. It has dual headphone output ports, one 3.5mm single-ended and another 2.5mm balanced output. The BU2 adopts an R2R ladder array arrangement for precise volume adjustment. Bring home your HiFi music hub in the form of Aune BU2 today!! 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. It helps one enjoy quality music with high-resolution audio signal decoding. Aune BU2 supports 32-Bit/768kHz PCM and native DSD512 decoding with low noise-floor and high-dynamic-range providing an impressive experience for the users. 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. It has an independent amplifier circuit with four independent amplifier chips for outstanding performance. Aune BU2 is capable of powering demanding HPs with ease!! 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. Experience true high-resolution sound with the Aune BU2 in your chain. 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. Technical 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.   Filter mode  SC: brick wall filter SU: hybrid fast roll-off filter SL: apodizing fast roll-off filter (default) SI: minimum phase slow roll-off filter SH: minimum phase fast roll-off filter SE: linear phase slow roll-off filter SD: linear phase fast roll-off filter