Yulong
Yulong A39 Headphone Amplifier and Preamplifier
Yulong A39 Headphone Amplifier and Preamplifier
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Specification
Specification
Yulong A39 Headphone Amplifier & Preamplifier
Key Features:
- High-Performance Audio: Equipped with a constant-current Class A 6W balanced headphone amplifier and a reference-grade preamplifier, the A39 offers slightly warm tonality and minimal distortion (0.0002% THD+N, SNR >120dB, crosstalk <-100dB) for pristine, lossless sound.
- Advanced Volume Control: Utilizes a CPU + FPGA latching relay and R2R resistor network for pure, transparent volume adjustments with up to 99 levels, eliminating sound quality loss and electromagnetic interference.
- Versatile Connectivity: Features XLR balanced and RCA inputs/outputs for the preamplifier, and 4.4mm, 6.35mm, and XLR outputs for the headphone amplifier with impedance switching for compatibility with a wide range of earbuds and headphones.
- Robust Power & Protection: Powered by a custom 50W NORATEL toroidal transformer and linear power supply, with CPU-monitored temperature, voltage, overcurrent protection, delayed startup, and quick shutdown for safe operation.
- Intuitive Interface: Includes an IPS LCD screen displaying dynamic spectrums and retro VU meters, paired with a single-knob or remote control for easy navigation and human-machine interaction.
- Compact Design: Housed in an A4-sized CNC-machined aluminum chassis for efficient heat dissipation, combining aesthetics with practicality. Perfectly pairs with the Yulong D39 streaming DAC for a complete desktop audio system.
- Global Compatibility: Features an external global voltage switch and USB DFU interface for firmware updates, ensuring adaptability across regions and future-proofing.
Technology and Innovations:
The Yulong A39 features a high-speed CPU running a streamlined Linux 4.4 operating system, delivering real-time monitoring and control of current, voltage, and temperature for unparalleled performance and reliability. Its advanced FPGA and R2R resistor network ensure lossless volume control, while the constant-current Class A amplification provides rich, warm tonality with minimal distortion.
Technical Specifications:
| Parameter | Details |
|---|---|
| Headphone Amplifier Output Power (Single-ended) | 320mW (32Ω), 640mW (64Ω), 1500mW (100Ω), 3000mW (250Ω), 6000mW (600Ω) |
| Headphone Amplifier Output Power (Balanced) | 600mW (32Ω), 1200mW (64Ω), 3000mW (100Ω), 6000mW (250Ω), 12000mW (600Ω) |
| Pre-amp Input/Output Impedance | 20kΩ (input), Single-ended RCA (10V), Balanced XLR (20V) |
| Frequency Response | 20Hz–20kHz ±0.15dB |
| THD+N | 0.0002% |
| SNR | >120dB |
| Crosstalk | <-100dB |
| Power Consumption | 50W |
| Dimensions | 248mm x 210mm x 60mm (L×W×H) |
| Weight | 2.6kg |
Why Choose Yulong A39?
With its powerful Class A amplification, lossless volume control, and advanced monitoring features, the Yulong A39 is the perfect choice for audiophiles seeking a compact, high-fidelity solution for headphone amplification and preamplification. Its sleek design and versatile compatibility ensure it fits seamlessly into any desktop audio system.
What's in the Box?
What's in the Box?
Shipping & Returns
Shipping & Returns
- Free Standard full searchable Shipping
- DDP(Delivered Duty Paid) Services, No payment on receiption
- Free 7-Day Return Policy!
Shipping Fees
Worldwide Free Shipping on Hificat, Please allow 1-3 business days for conduct Quality Control in order to ensure the products quality.
In the event that a shipment is refused delivery by the recipient, is undeliverable, or is returned to sender, Hificat will process a refund to the original payment method used.
If a customer would like the order reshipped, they’ll be charged a reshipment fee. Customers may also be subject to a restocking fee of up to 20 percent of the product cost.
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Which Couriers To Use?
We collaborate with these courier companies:
Standard Shipping: Yanwen Express
Express Shipping(over $500 can be free): DHL Express, FedEx and SF Express
Hificat has extensive global logistics experience to ensure quality logistics services to consumers.
HiFiCat offers consumers different shipping, depending on the country, a choice of different shipping methods.
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Estimated Delivery Time
1. France, Germany, UK, Italy, Spain, USA.
All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 6-10 days to arrive.
Tracking Example
France: https://t.17track.net/en#nums=YT2132021222003141
Germany: https://t.17track.net/en#nums=YT2133621222016083
United Kingdom: https://www.17track.net/?nums=GV779664269GB
Italy:https://t.17track.net/en#nums=YT2133021222011717
Spain:https://t.17track.net/en#nums=YT2129521222003430
United States:https://t.17track.net/en#nums=SUA211205BIUQ1000007
2.EU Country：Filand, Poland, Estonia, Norway, Switzerland, Greece, Sweden, Israel, Czech Republic, Slovenia, Slovakia, Denmark, Netherlands, Latvia, Croatia, Austria, Hungary, Belgium, Bulgaria, Romania, Ireland, Malta, Iceland, Serbia and so on.
All taxes and duties are prepaid to the carrier by HiFiCat prior to shipping, so there are no taxes or duties to pay when you receive it. 10-15 days to arrive.
Filand: https://www.17track.net/?nums=UG324191515YP
Poland: https://www.17track.net/?nums=UG335827360YP
Estonia: https://www.17track.net/?nums=UG363043181YP
Norway: https://www.17track.net/?nums=VR457380806YP
Switzerland: https://www.17track.net/?nums=UG359525911YP
Greece: https://www.17track.net/?nums=UG250851788YP
Sweden: https://www.17track.net/?nums=UG353458343YP
Israel: https://www.17track.net/?nums=UG356134837YP
Czech Republic: https://www.17track.net/?nums=UG320437102YP
Slovenia: https://www.17track.net/?nums=UG349882511YP
Slovakia: https://www.17track.net/?nums=UG349946557YP
Denmark: https://www.17track.net/?nums=UG272480001YP
Netherlands: https://www.17track.net/?nums=UG206078468YP
Latvia: https://www.17track.net/?nums=UG336264373YP
Croatia: https://www.17track.net/?nums=UG331204789YP
Austria: https://www.17track.net/?nums=UG322443180YP
Hungary: https://www.17track.net/?nums=UG313846849YP
Belgium: https://www.17track.net/?nums=UG313858025YP
Bulgaria: https://www.17track.net/?nums=UG309182635YP
Romania: https://www.17track.net/?nums=UG295530616YP
Ireland: https://www.17track.net/?nums=UG286654665YP
Malta:
Iceland: https://www.17track.net/?nums=VR447888050YP
Serbia: https://www.17track.net/?nums=VR447710777YP
Ukraine: https://www.17track.net/?nums=UG331240667YP
Russian Federation: https://www.17track.net/?nums=VR454415418YP
3.South America:Peru, Brazil, Chile
Chile: https://www.17track.net/?nums=UG205949999YP
Brazil: https://www.17track.net/?nums=UG207476109YP
New Zealand: https://www.17track.net/?nums=YE175499582CN
Australia: https://www.17track.net/?nums=UG245685796YP
5.Canada By Canada Post, about 2 weeks.
Vietnam: https://www.17track.net/?nums=VR456508418YP
