Features

High-Resolution Audio Support: Supports PCM up to 32Bit/384KHz and DSD256 for high-quality audio playback.

Advanced Connectivity: Includes USB, Bluetooth 5.0, coaxial, and optical inputs for versatile connectivity options.

Powerful Output: Delivers up to 1300mW per channel on balanced output and 1000mW per channel on single-ended output.

Durable Build: Constructed from CNC-machined aluminum for durability and aesthetic appeal.

Comprehensive Controls: Features independent volume control, preamp function, and multiple output levels for customizable audio performance.

Battery Life: Offers up to 8.5 hours of playback time with support for fast charging via Type-C or DC port.

Technical Information

Internal Storage: Supports one external SD or TF card (FAT32) up to 512GB.

DAC Chip: ES9038PRO x 1.

Volume Control: PGA2311UA analog program-controlled.

Clock Jitter: 0.038 picoseconds (38 femtoseconds).

Charging Interface: Type-C port or DC port, compatible with QC standards.

Battery Life: About 8.5 hours.

Charging Time: 4-5 hours with fast charging, 8-9 hours with standard charging.

Dimensions: 20cm x 18cm x 4.45cm.

Weight: 3.1kg (including package).

Output Power (Single-ended): 1000mW @ 32Ω, 360mW @ 300Ω, 180mW @ 600Ω.

Output Power (Balanced): 1300mW @ 32Ω, 1200mW @ 300Ω, 720mW @ 600Ω.

Package Includes

QA390 mod *1

SanDisk 64GB TF card (with card set) *1

USB 3.0 card reader *1

USB A to port B cable *1

Type-C charging cable *1

External power supply (charging) *1

Infrared remote controller *1

Headphone Output Power

Single-Ended:

32Ω: 1000mW/ch high voltage, high gain

300Ω: 360mW/ch high voltage, super high gain

600Ω: 180mW/ch high voltage, super high gain

Balanced:

32Ω: 1300mW/ch high voltage, high gain

300Ω: 1200mW/ch high voltage, super high gain

600Ω: 720mW/ch high voltage, super high gain

Differences Between QA390mod and QA390LE

Same Circuit and Materials:

Dual AS338 global clocks.

ES9038PRO DAC chip.

LDAC high-definition Bluetooth input comparable to local playback.

Same optimized power and analog circuit as QA390LE.

Production Process: QA390mod uses a mass-production process rather than the limited production process of QA390LE.

Appearance: QA390mod does not have the limited edition numbered nameplate.

Sound Quality: QA390mod sounds very close to QA390LE, with only subtle differences in smoothness. Overall similarity exceeds 95% (most audiophiles may not notice the difference).

How to Distinguish QA390mod from Regular QA390

"MOD" printed on the bottom right of the glass lens.

"MOD by Quloos" sticker on the left side of the machine.

Uses the same ES9038PRO version PCB board as QA390LE, with a rose-red DC input socket.

Available in black, red, and limited-edition titanium gray to match the QH1 headphone amplifier.