Key Features
l Nutube 6P1 Application
Supports both single-ended 3.5mm and balanced 4.4mm PO/LO outputs.
Each output can toggle between tube and solid-state modes.
l Classic丨Modern丨SS
Classic：
·No global negative feedback; each stage uses local feedback.
·Tube amplification introduces higher total harmonic distortion (THD).
·Rich harmonic texture delivers a warm, nostalgic sonic flavor — classic “tube sound.”
Modern：
·Introduces global negative feedback to define total gain.
·THD is significantly reduced.
·Harmonically cleaner, quieter background while preserving the warmth of tubes.
·Yields a sweet, clear, and delicate modern tube audio signature.
Solid-state：
·Based on precision-tuned op-amp ICs and peripheral circuits.
·Offers neutral tonality, fast transients, and highly accurate audio reproduction.
·Ideal for listening to music with its original, uncolored character.
l Dual AKM AK4493SEQ DAC
Equipped with dual AK4493SEQ DACs, each operating in mono mode.
Left and right channels are decoded separately for lower crosstalk and better channel separation.
l 16-Core XMOS XU316 Processor
Employs the latest generation XMOS XU316 USB Audio solution for high-performance digital processing.
l Triple Power Supply Modes
Built-in 2000mAh lithium battery provides up to 4.7 hours of battery-powered use. Also supports USB power from the external device (without charging the battery), as well as external DC power supply for increased output power.
Compatible with QC/PD fast charging.
l Hyper Mode
A specialized feature designed for headphone usage under DC power supply. Increases static operating current and voltage for enhanced audio performance.
Balanced: 1000mW + 1000mW @ 32Ω; 1170mW + 1170mW @ 16Ω
Single-ended: 420mW + 420mW @ 32Ω; 610mW + 610mW @ 16Ω
l Magnetic Back Design
Magnetic rear panel allows seamless attachment to smartphones.
Includes a custom Cayin leather case — hand-stitched, supple leather, precise cutouts, and magnetic back for secure attachment.
Comes with a L-shaped USB cable, ergonomically angled to avoid hand obstruction.
l Vibration Isolation
Custom-designed anti-vibration system for the Nutube vacuum tube.
Features a custom-built silicon housing on an FPC flexible PCB and a pin-supported vertical suspension system to eliminate microphonics.
l Elegant and Compact
CNC-machined unibody metal chassis.
Weighs only 150g, and measures 15mm thick.
l Thoughtful Details
0.96" color display with adjustable brightness.
Knurled volume knob with refined tactile resistance.
Side-mounted multi-color indicator light for charging and sample rate/format display.
l Versatile Use Scenarios
USB Audio DAC
Supports UAC1.0 (driverless) and UAC2.0 modes.
Compatible with smartphones, computers, digital audio players, tablets, and gaming consoles.
S/PDIF Input/Output
Uses Qualcomm QCC5125 for high-definition Bluetooth transmission.
Supports LDAC and other HD Bluetooth codecs.
Dimension (mm)：100*70*15
Weight：150g
