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XUELIN H8 Tuner Ak4497 OPA1642 HiFi Lossless Portable Music Player

DAC

AK4497 is a high quality 32-bit dual channel DAC based on AKM's VELVET SOUND technology. The device offers low distortion with -116dB THD+N DAC and 128dB S/N

LPF op amp module

OPA1642 is a JFET input, low distortion, low noise op amp. Its high frequency is vivid, just like the triangular iron in the thunderstorm, crisp, clean and sweet.

MUSE8920 is a professional audio op amp with clear, clear sound and comfortable listening.

Coupling module

When capacitive coupling, the longitudinal sound field shrinks, the high-pitched sound is buckled, the middle sound is round and gorgeous, and the human voice is more enchanting. When the direct connection is coupled, the sense of hearing is straightforward and the sound field is large. And the low frequency dive deeper and have a sense of energy.

Amplifier

TPA6120--TI professional amp chip with amazing high indicators, clean and smooth sound

AD8397 - the most classic and most widely used amp. The voice is enchanting, and it is full of music.

CLASS discrete amp

XUELIN Tuner's CLASSA full-discrete headphone amplifier module integrates 88 parts in a coin-only limited space (25*25mm). Zen thoughts, do the dojo in the snail shell. It uses an excellent Walman architecture and jfet triode input, static 40mA, full thrust and sweet grip, no matter the hardware test indicators or the actual sense of hearing have achieved a surprising effect. This module is based on xueliniHiFi-2018 Class A amp transplant and retuned to fit the portable work environment.

2.4inch 360*400 pixel IPS screen

The resolution is 100% higher than that of the normal VGA screen. The UI is based on the mature 990 system and has been verified by thousands of users.

Specification

CPU: Storage: External TF card storage up to 128GB

Volume adjustment: PGA2311 volume

Display: 2.4inch retina liquid crystal (400*360dip)

Power Management: APX202/Power LDO: TPS7A33+TPS7A47

JZ4760 dual core 600MHZ master chip

Power Filter: Polymer + Super Solid Capacitor

Connector:

1.RCA coaxial digital output interface (IEC-60958) and LINE OUT interface

2.HEADPHONE 3.5mm output connector (with 6.5mm earphone adaptor)

3.HEADPHONE 2.5mm Balanced output connector (requires optional balance module to work)

4.USB data and charging interface

5.TF card expansion interface

Standard module Optional modules will be launched

DAC: AK4497*1 Audio coupling: Melaleuca cake film+MLCC

LPF:OPA1642*1

AMP:AD8397*1

LPF:Muse8920*1

AMP:TPA6120*1

Auio coupling: Direct connection

AMP: CLASS A*1

(The following is based on unbalanced mode AK4497+MUSES8920+ capacitive coupling+class+ZERO)

Support Format：

APE ：Fast Normal High，8KHZ-192KHZ，16bit-24bit，Support CUE

WAV : 8KHZ-192KHZ，16bit-24bit-32bit，Support CUE

WMA /Wma Lossless: 8KHZ-96KHZ, 16bit-24bit

FLAC : 8KHZ-192KHZ，16bit-24bit，Support CUE

DSD/ DFF/ ISO DSD: 2.8KHZ,1bit

Aiff: 8KHZ-192KHZ, 16bit-24bit-32bit

M4A:8KHZ-192KHZ, 16bit-24bit

MP2/MP3/ OGG: 8KHZ-48KHZ, 16bit

AAC: 8KHZ-48KHZ, 16bit-24bit

Earphone output power:400mw/16ohm 200mw/32ohm 48mw/300ohm

Coaxial output impedance:75ohm

Coaxial output level：500mv p-p

Line output basic level:2v±1.8dB(1KHz)

Noise ratio..≥110dB.A Weighting

Channel imbalanced≤1.0dB(1KHz)

Separation≥94dB(1KHz)

Frequency response:20Hz~20KHz(+0/-2.5dB)

Distortion and noise…..≤0.015%(1KHz)

Work power:

AK4497+OPA1642+SHORT+CLASS….455MA

AK4497+OPA1642+SHORT+AD8397….310MA

AK4497+OPA1642+SHORT+TPA6120….300MA

Storage:TF card （Maximum 128GB）

Battery: 3000mah 4.2v lithium battery (LG485780)

Size: 130*69*28mm

Weight: 260g