v53 Desktop Amplifier
$1,699.99
Collaboratively Crafted: The Official Amplifier for Arashi
This amplifier is born from collaboration with niuniu AUDIO, the name draws inspiration from the dichotomy of science and art, symbolized in the evolution of letters N (niuniu) and H (Hi-End). This amplifier embodies the convergence of rational design and emotional musicality, invoking thought and harmony in audio reproduction.
The design pays homage to Beethoven's "Waldstein" Piano Sonata No. 21, Op. 53, aiming to replicate its sense of awakening and clarity.
Simplicity and Modernism
- Outstanding design
- Showcased through DUNU's meticulous craftsmanship and quality.
- The chassis is precision-crafted from a single block of 6063 aluminum alloy using CNC machining, offering superior anti-resonance and shielding capabilities compared to conventional, jointed enclosures. Finished with a refined sandblasted surface, it boasts an elegant texture and a striking design that leaves a lasting impression.
Battery-Driven, Precise Power Supply, and Electrical Interference Isolation
- Powered by a high-voltage battery pack made up of six Sanyo NCR18650 cells in series, this system ensures stable and pure sound output in various environments such as offices, dorm rooms, living rooms, and bedrooms. With an impressive 88Wh battery capacity, it also guarantees up to 24 hours of continuous playback.
- Each high-voltage battery pack is meticulously balanced, ensuring that the voltage and internal resistance of each cell are matched, with the resistance difference between the six cells kept under 1 milliohm.
Powerful Materials for Superior Sound and Control
- The design incorporates eight Nichicon KZ water-tank capacitors and high-performance wide-band buffers, paired with Vishay 0.1% 15ppm wafer resistors and 20 additional Nichicon KZ and ELNA Silmic2 capacitors. This carefully crafted voltage division and filtering module ensures a clean, precise, and stable power supply, while effectively eliminating switching noise issues from the battery-boosted power circuit.
High-Performance Panasonic Signal Relays
- The long-lasting, high-performance Panasonic signal relays are employed for input and gain switching. Featuring gold-plated silver-palladium contacts, they offer rapid response and zero degradation in sound quality.
Polypropylene Metal Foil Oil-Immersed Capacitors
- The coupling capacitors used in this design are MIFLEX polypropylene metal foil oil-immersed capacitors from Poland. In addition to the high-performance benefits of MKP capacitors, these provide outstanding tonal richness. Compared to standard WIMA MKP4/MKP10 capacitors, these capacitors deliver an exceptional 3D soundstage.
Neotech 7N OCC Silver Internal Wiring
- For the MODEL 53, every signal path utilizes Neotech 7N OCC Silver internal wiring, chosen after an extensive tuning process that involved testing multiple wire types. These included 7N OCC copper from Neotech, CARDAS golden ratio copper, and GOTHAM LCOF long-crystal oxygen-free copper. While the cost of 7N OCC silver is significantly higher than other materials, its sonic performance ultimately led to its selection.
Quad-Channel Full-Balanced Circuit, Unmatched Power Drive for Incredible Performance
- The MODEL 53 features a quad-channel full-balanced amplification circuit, where all voltage amplification sections are powered by high-spec Texas Instruments op-amps. Even under conditions where THD+N < 0.01%, the amplifier delivers an impressive 1200mW output at 64Ω load (battery-driven, balanced output). This immense power ensures that the MODEL 53 provides exceptional compatibility with all types of high-impedance over-ear headphones, from dynamic drivers to planar magnetic, with enough power to drive them with clarity and precision.
Product Highlight
- "Arashi" Official Amplifier
- Battery-Powered to Eliminate Electrical Interference
- Premium Components for Superior Sound Quality and Control
- High-Performance Panasonic Signal Relays
- Polypropylene Metal-Foil Oil Capacitors
- Neotech 7N OCC Silver Internal Wiring
- Powerful Driving Capability
- Outstanding IEM Compatibility
Technical Info
- Single-Ended Output Impedance: 1Ω
- Balanced Output Impedance: 1Ω
- SNR: >132dB (A-weighted)
- Dynamic Range: >132dB (A-weighted)
- Crosstalk: < -115dB@1kHz
- THD+N:
- 0.0005% @ 30Ω
- 0.0004% @ 300Ω
- Gain: Low (+4.8dB) / High (+12.5dB)
- Weight: Approximately 3.93kg
- Dimensions: 344.5mm × 237mm × 68.5mm
- Battery Capacity: 88Wh
- Battery Life: Approximately 24 hours (actual duration may vary depending on load)
- Included Accessories:
- Main unit x1
- User manual x1
- DC power adapter x1
- DC Power Adapter Indicator:
- Red light: Charging
- Green light: Fully charged
Audio Specifications
Balanced Output Power (Battery-Powered)
- 30Ω；1000mW（THD+N＜0.01%）
- 64Ω：1200mW（THD+N＜0.01%）
- 150Ω：900mW（THD+N＜0.01%）
- 300Ω：500mW（THD+N＜0.01%）
- 600Ω：300mW（THD+N＜0.01%）
Single-Ended Output Power (Battery-Powered)
- 30Ω；500mW（THD+N＜0.01%）
- 64Ω：600mW（THD+N＜0.01%）
- 150Ω：450mW（THD+N＜0.01%）
- 300Ω：250mW（THD+N＜0.01%）
- 600Ω：150mW（THD+N＜0.01%）
Balanced Output Power (Linear Power Supply)
- 30Ω；1300mW（THD+N＜0.01%）
- 64Ω：1850mW（THD+N＜0.01%）
- 150Ω：1500mW（THD+N＜0.01%）
- 300Ω：950mW（THD+N＜0.01%）
- 600Ω：500mW（THD+N＜0.01%）
Single-Ended Output Power (Linear Power Supply)
- 30Ω；650mW（THD+N＜0.01%）
- 64Ω：9250mW（THD+N＜0.01%）
- 150Ω：750mW（THD+N＜0.01%）
- 300Ω：475mW（THD+N＜0.01%）
- 600Ω：250mW（THD+N＜0.01%）
One-Year Official Warranty
Our commitment to providing exceptional service and support is reflected not only in the continual elevation the quality and craftsmanship of our products but also in our continued offer of a one-year international warranty. We strive to ensure customer satisfaction and provide peace of mind to all consumers.
Return & Refund Policy
In order to be eligible for a refund, please return the product within 30 calendar days of your purchase, estimated from the date of arrival (as determined by the final timestamp on tracking telemetry). Order cancellations requested prior to successful delivery are also treated as refunds. Any additional shipping fees incurred during the transaction are not eligible for refund.
The product must be in the same condition that you received it and undamaged. If the product is damaged in any way, or if the return was initiated after a period of 30 calendar days, you will not be eligible for a refund.
Unless the product has been assigned to a special 'try at home' order program, all individual orders will be subject to a 5% restocking fee if unopened (shrink wrap must be intact), and a 10% restocking fee if opened.
We may waive restocking fees if in-store credit is opted for in lieu of a refund, or under very special circumstances subject to administrative approval.
After we receive your item, our factory team will inspect it and process your refund. The order total will be refunded to the original payment method used during the purchase. For credit card payments, it may take as many as 5 to 10 business days or more for a refund to show up on your credit card statement.
Shipping Policy
Aside from the locale of mainland China, we offer international shipments worldwide. Rates are subject to the particular carrier rate selected during checkout. We offer our subsidized account rates to keep the costs as low as possible.
Shipping rates vary with respect to transit time and destination. Please enter your destination and check the estimated shipping time at checkout. The options are typically labeled as 'Free Shipping', 'Standard Shipping', and 'Expedited Shipping'. Unless the product is specially designated as a special order product, we typically ship within 1 business day for a stocked product. If we are experiencing a high volume of orders, shipment may be delayed by a few days. If there will be a significant delay in shipment of your order, we will contact you via e-mail.
Business hours are referenced to weekdays, Monday through Friday, from 9:00 AM to 5:00 PM (UTC +8). Processing and shipping times do not include weekends or holidays. If an order is placed outside of business hours or during weekends, the order will be processed and fulfilled beginning on the following business day.
Import duties and customs regulations vary from country to country. Fees not prepaid by our courier are the responsibility of the customer or intended recipient. DUNU is not responsible for tariffs, VAT, or other customs consignment fees. Individuals concerned about the prospect of paying for additional fees should contact their local customs and import offices for clarification on how duties are levied. Upon checkout, detailed notes regarding the provision of customs declaration forms should be clearly written in the 'Add a Note' section of the checkout page. If a packages is refused by the customer on account of customs duties, taxes, or other fees, the package is not eligible for refund, as it is considered to be abandoned in the office of consignment.
