![JBL Junior 320BT Wireless Bluetooth On-Ear Headphone with Mic for Kids - Blue [Open Box]](https://d30ek1sgwm2r4c.cloudfront.net/sites/files/treoo/images/products/202411/600xAUTO/jbl-junior-320bt-blue_2.jpg.webp "JBL Junior 320BT Wireless Bluetooth On-Ear Headphone with Mic for Kids - Blue [Open Box]")
![JBL Junior 320BT Wireless Bluetooth On-Ear Headphone with Mic for Kids - Blue [Open Box]](https://d30ek1sgwm2r4c.cloudfront.net/sites/files/treoo/images/products/202411/600xAUTO/jbl-junior-320bt-blue_1.jpg.webp "JBL Junior 320BT Wireless Bluetooth On-Ear Headphone with Mic for Kids - Blue [Open Box]")
Astell&Kern A&ultima SP4000 MQA Digital Audio Player - Silver
S$5,999.00
Colour: Silver
Why You Should Get It
- Enhanced signal processing capabilities with Octa audio circuit architecture
- Supports High Driving Mode for delivering premium sound quality
- Minimizes group delay with proprietary ESA (Enhanced Signal Alignment) technology
- Ultra Low Noise LDO Regulator for top-tier noise suppression
- Precision sound achieved with Any Layer Type PCB
- Equipped with a 99.9% Pure Copper Shield Can
- First Astell&Kern Device to Support Full Android OS
- First Astell&Kern Device to Feature Advanced DAR Technology
- Features 4.5th generation UI, combining functionality and emotional design
Warranty
1 year warranty (local)
In The Box
- A&K SP4000
- Premium Shrunken Calf Leather Case by Perlinger
- USB-C to USB-C Charging Cable
- Screen Protector
- Warranty Cards
- Quick-Start Information Cards
| Product Availability | Available (current model) |
| Product Type | Digital Audio Player |
| Style/Type | Portable |
| Features | WiFi, Bluetooth, Expandable Memory/Storage, Internet Radio, Dual Headphone Output, High-Res Audio Certified, DSD, MQA (Master Quality Authenticated), 2.4GHz/5GHz Dual-Band WiFi, roon ready |
| Connectivity | Wireless & Wired |
| DAC | AKM AK4191 x2 (Dual Modulator) & AKM AK4499EX x2 (Dual DAC) |
| Op-Amp / Amplifier | RAYTHEON JAN6418 x2 (Vacuum Tube) |
| CPU | Qualcomm Snapdragon 6125 Octa-core |
| Internal Storage Capacity | 256GB |
| Expandable Storage | Yes |
| Expandable Storage Capacity | 1TB (1024MB) |
| Bluetooth Version | v5.0 |
| Bluetooth Codecs | SBC, AAC, aptX HD, LDAC |
| Waterproof Rating | IPX0 – No protection |
| Sampling / Bitrate | PCM: 8kHz ~ 768kHz (8/16/24/32bits per sample), DSD Native: DSD64(1bit 2.8MHz), DSD128(1bit 5.6MHz), DSD256(1bit 11.2MHz), DSD512(1bit 22.4MHz) |
| Frequency Response (Hz) | 20Hz~70kHz |
| Signal-to-Noise Ratio (SNR) | 120dB @ 1kHz, Unbalanced │ 124dB @ 1kHz, Balanced |
| Total Harmonic Distortion (THD) | 0.0005% @ 1kHz, Unbalanced │ 0.0004% @ 1kHz, Balanced |
| Voice Assistants | - None - |
| Streaming Services | Roon |
| Mic for Calls/Communication | None |
| Input Connectivity Options | microSD [External Storage], USB Type-C (USB-C) [Charging], WiFi |
| Output Connectivity Options | 2.5mm (4-Pole) [Balanced], Optical mini-TOSLINK (SPDIF), 3.5mm Stereo, 4.4mm (5-Pole) [Balanced], Bluetooth |
| Network Device Output Options | WiFi |
| Driveability (Output Impedance) (Ω) | Unbalanced Out 3.5mm (1.5ohm) │ Balanced Out 2.5mm (1.5ohm), 4.4mm(1.4ohm) |
| Battery Life (Hours) | About 10 hours (Standard : FLAC, 16bit, 44.1kHz, Unbalanced, Vol.50, LCD Off, LED On, OP AMP Mode) |
| Product Dimensions | 3.34” (85mm)[W] x 5.89” (149.8mm)[H] x 0.76” (19.5mm)[D] |
| Product Weight (g) | About 21.7oz (615g) |
| Additional Tech Specs | General Specifications
Clock Source
Storage Capacity
Battery
|
| Colour | Silver |
| Package Contents |
|
| Warranty | 1 year warranty (local) |
If you're based in Singapore,
- spend $300 or more for free doorstep delivery1.
($250 for Silver/Gold/Platinum VIP members) - add a few more bucks, for delivery during the night/weekend, or quicker prioritised delivery options2.
- self-collection is possible at our Showroom, based in Ubi (nearest to MacPherson MRT). Find out where, and how to get to us here.
- and yes, you may arrange your own 3rd party logistics to pickup your purchases on your behalf.
GrabExpress, Lalamove, GoGoX, RydeSEND services are welcome.
View additional Terms & Conditions associated to local doorstep delivery service.
Friends from Overseas,
- we do ship internationally.
- shipping fees are calculated according to total gross actual or volumetric weight of all item(s) in cart, whichever higher.
- shipping fees will vary depending on international carrier(s)3, and will be displayed during checkout.
- do be aware of additional import tax/VAT that may apply.
Important Notice for Customers in the USA
Due to recent changes in U.S. trade regulations, additional tariffs are being imposed on products manufactured in China and imported into the United States. As many of our audio products are made in China, orders shipped to U.S. addresses may be subject to an added tariff charge at checkout, reflected as a "U.S. Import Tariff Surcharge". Please note that this surcharge amount is determined by U.S. import policies and may vary significantly depending on product categories and any future policy adjustments. These charges are necessary to ensure compliance with U.S. customs requirements and to allow us to continue serving our U.S. customers reliably. We strongly encourage you to review the total cost at checkout before placing your order.
Due to recent changes in U.S. trade regulations, additional tariffs are being imposed on products manufactured in China and imported into the United States. As many of our audio products are made in China, orders shipped to U.S. addresses may be subject to an added tariff charge at checkout, reflected as a "U.S. Import Tariff Surcharge". Please note that this surcharge amount is determined by U.S. import policies and may vary significantly depending on product categories and any future policy adjustments. These charges are necessary to ensure compliance with U.S. customs requirements and to allow us to continue serving our U.S. customers reliably. We strongly encourage you to review the total cost at checkout before placing your order.
Important Notice due to ongoing tensions in the Middle East
This surcharge is temporary but necessary during this period of significantly increased operational pressure as a result of the ongoing geo‑political situation in the Middle East.
Orders shipped to Gulf Cooperation Council (GCC), Africa, US and EU regions may be subject to an added surcharge at checkout, reflected as a "Temporary Emergency Situational Surcharge". Please note that this surcharge amount is determined by our freight partners, and may subject to adjustments according to situational updates. We strongly encourage you to review the total cost at checkout before placing your order.
This surcharge is temporary but necessary during this period of significantly increased operational pressure as a result of the ongoing geo‑political situation in the Middle East.
Orders shipped to Gulf Cooperation Council (GCC), Africa, US and EU regions may be subject to an added surcharge at checkout, reflected as a "Temporary Emergency Situational Surcharge". Please note that this surcharge amount is determined by our freight partners, and may subject to adjustments according to situational updates. We strongly encourage you to review the total cost at checkout before placing your order.
View additional Terms & Conditions associated to international door to door shipping service.
1 Terms and condition do apply for free delivery. For more information, click here to view.
2 View our updated list of local delivery options.
3 View our updated list of international carriers.
No Reviews Available for this Product Yet. Leave Your Review
| Product Availability | Available (current model) |
| Product Type | Digital Audio Player |
| Style/Type | Portable |
| Features | WiFi, Bluetooth, Expandable Memory/Storage, Internet Radio, Dual Headphone Output, High-Res Audio Certified, DSD, MQA (Master Quality Authenticated), 2.4GHz/5GHz Dual-Band WiFi, roon ready |
| Connectivity | Wireless & Wired |
| DAC | AKM AK4191 x2 (Dual Modulator) & AKM AK4499EX x2 (Dual DAC) |
| Op-Amp / Amplifier | RAYTHEON JAN6418 x2 (Vacuum Tube) |
| CPU | Qualcomm Snapdragon 6125 Octa-core |
| Internal Storage Capacity | 256GB |
| Expandable Storage | Yes |
| Expandable Storage Capacity | 1TB (1024MB) |
| Bluetooth Version | v5.0 |
| Bluetooth Codecs | SBC, AAC, aptX HD, LDAC |
| Waterproof Rating | IPX0 – No protection |
| Sampling / Bitrate | PCM: 8kHz ~ 768kHz (8/16/24/32bits per sample), DSD Native: DSD64(1bit 2.8MHz), DSD128(1bit 5.6MHz), DSD256(1bit 11.2MHz), DSD512(1bit 22.4MHz) |
| Frequency Response (Hz) | 20Hz~70kHz |
| Signal-to-Noise Ratio (SNR) | 120dB @ 1kHz, Unbalanced │ 124dB @ 1kHz, Balanced |
| Total Harmonic Distortion (THD) | 0.0005% @ 1kHz, Unbalanced │ 0.0004% @ 1kHz, Balanced |
| Voice Assistants | - None - |
| Streaming Services | Roon |
| Mic for Calls/Communication | None |
| Input Connectivity Options | microSD [External Storage], USB Type-C (USB-C) [Charging], WiFi |
| Output Connectivity Options | 2.5mm (4-Pole) [Balanced], Optical mini-TOSLINK (SPDIF), 3.5mm Stereo, 4.4mm (5-Pole) [Balanced], Bluetooth |
| Network Device Output Options | WiFi |
| Driveability (Output Impedance) (Ω) | Unbalanced Out 3.5mm (1.5ohm) │ Balanced Out 2.5mm (1.5ohm), 4.4mm(1.4ohm) |
| Battery Life (Hours) | About 10 hours (Standard : FLAC, 16bit, 44.1kHz, Unbalanced, Vol.50, LCD Off, LED On, OP AMP Mode) |
| Product Dimensions | 3.34” (85mm)[W] x 5.89” (149.8mm)[H] x 0.76” (19.5mm)[D] |
| Product Weight (g) | About 21.7oz (615g) |
| Additional Tech Specs | General Specifications
Clock Source
Storage Capacity
Battery
|
| Colour | Silver |
| Package Contents |
|
| Warranty | 1 year warranty (local) |
No Reviews Available for this Product Yet. Leave Your Review
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