AUNE
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The BU2, part of the aune B-series, offers a new generation of DAC with a headphone amp, powered by a classic B1 single-to-dual positive-and-negative voltage power supply. Its compact body contains dual DAC chips and four amps, all designed for high-quality sound.
Want a “DAP” experience? Simply connect your smartphone to the BU2 via USB, and it becomes a mastertape-level music player. Whether streaming from Apple Music or Kuke, your phone's music library becomes a HiFi experience on the go.
Connect your smartphone, tablet, or computer to the BU2 via Bluetooth and enjoy high-quality wireless sound. With support for SBC, AAC, aptX, and aptX HD protocols, and special tuning, the Bluetooth audio performance is excellent.
The BU2 can also be connected to a PC or MacBook, offering 32-bit/768k DSD512 mastertape-level decoding, delivering vivid, detailed sound presentation on your computer.
Featuring dual ES9318 DAC chips in parallel, combined with four independent amps and the low-ripple positive-and-negative pump power circuit of the classic B1, the BU2 brings out the best in your earphones, offering excellent sound quality.
With two low-jitter 45M/49M oscillators synchronized with the DAC chips via the USB chip, the BU2 delivers a natural and refined sound.
The single knob on the BU2 acts as both a button and control, allowing you to manage all settings and features with ease, providing a streamlined and simple user experience.
Featuring R2R volume technology, the BU2 uses electronic switches and an R2R ladder network for precise control at low volume. This results in better signal-to-noise ratio (SNR) and uncompressed dynamic range, preserving the detail in your music.
Through careful design and multiple rounds of optimization, the BU2 achieves ultra-low noise (3.16uV) and THD+N (0.000145%). These excellent specs contribute to its vivid, high-fidelity sound reproduction.
The tuning of the BU2 is based on real instrument sounds and musical references, delivering a natural, musical sound signature that enhances the listening experience.
A new tariff system will take effect across all 27 EU member states starting 1 July 2026. The EU is abolishing the duty exemption for low-value parcels — all goods entering the EU will now be subject to customs duties, including a fixed duty of €3 per HS tariff code category for IOSS-declared goods under €150.
A handling surcharge of USD $5 has been applied to all standard shipments to EU countries on orders under $500. Orders over $500 qualify for free expedited shipping.
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In the event that a shipment is refused, undeliverable, or returned to sender, HiFiCat will process a refund to the original payment method. If a customer requests reshipment, a reshipment fee will apply. A restocking fee of up to 20% may also apply.
All taxes and duties are prepaid (DDP). 5–10 working days. Free standard shipping.
Tracking examples:
Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Cyprus
All taxes and duties are prepaid (DDP). 10–15 working days.
💰 Shipping cost: $5.00 USD (orders $0–$500) | Free (orders $500+, via DHL Express)
Tracking examples:
Norway, Switzerland, Ukraine, Armenia, North Macedonia, Moldova, Monaco, San Marino, Vatican City, Serbia, Albania, Kosovo, Montenegro, Bosnia & Herzegovina, Belarus, Georgia, Andorra, Guernsey, Jersey, Faroe Islands, Svalbard & Jan Mayen, Guadeloupe, Réunion, Gibraltar, Isle of Man, Mayotte, Iceland, Liechtenstein, Turkey
All taxes and duties are prepaid (DDP). 10–15 working days. Free standard shipping.
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