Listed price: USD $929.99
(in Stock) How buy it:Click here
HiFi digital lossless music player is QLS-HiFi’stop line
digital music playback equipment that integrated digital
music player, DAC and headphone amplifier altogether. QA860
is based on the hot QA660 digital music player with
dedicated improvementon the digital output circuit, along
with the DAC and headphone amplifier module which we spent
over 2 years on developing and continuing
optimizationthrough testing more than 10 major hardware
threaded software framework, the extreme-low jitter clock
process circuit, the digital/analog completely separated
power supply loops and full isolated mounting rooms for each
module are the keys for QA860 to enter into the Hi-End world
with far beyond a lot of Hi-end level desktop CD players.
Threaded Software Framework
QA860 implemented QLS-HiFi’s unique proprietary technology –
the single threaded software framework. This technology
ensured ultra-low jitters and high accuracy in playback of
digital music by occupying the whole CPU with the single
music reading and decoding program during the music
playback.We keep it simple as always for supporting the
simplest SD media cards only, however on the other hand we
make every attempt to improve the back end qualities so
providing the best value to againstthe priceto the true
audiophiles. QA860 is the continuing persistence in pursuit
of our belief on HiFi equipment development.
and DSD Support
QA860 supports Studio Master wav files in 24bit/192KHz and
DSD64/1bit/Stereo. DSD files can be streamed out of
the digital output in DoP format, and converted to analog
singles directly through the internal DAC as well.
Dual 0.5PPM TCXO for
22.5792Mhz and 24.576Mhz.
High standard power
- 2 customized toroidal transformer for digital and
analog circuits separately with vibration isolation and
absorbing design, and without interfering the digital
clock circuit completely.
- TI top line RF LDO for supplying the DAC chips and
clock circuits, which has been proved more suitable for
the digital circuit than the top line LDO of Linear
Technology in our long time test.
- Mono concept in designing power supply circuit for
each independent function unit.
- Schurter filter power entry module and fuses.
with on/off and volume control through the remote
controller (AD1955 is fixed level output to process DSD,
as the result the inside pre-amplifier is not
High power headphone
amplifier integrated for Hi/Low impedance headphones.
isolation design and manufacture.
4-layers PCB for all
DAC: AD1955 I/V:
OPA2134*2 LP and pre-amp: LME49720*3
Coaxial*1, Optical*1 (up to 24bit/192Khz).
Analog output: RCA*1,
- 0dBFS signal output level: 2.5V RMS
- Frequency response: 0-50Khz
- S/N: 120dB
- Dynamic Range: 118dB
- Total Harmonic distortion: 0.0007%
- Headphone power output: 600Ω@120mw,
Input Voltage: AC 110V
and AC 220V selectable
Dimensions: 215mm x
330mm x 100 mm
USB port is reserved for future upgrade, it's not
functionable on QA860
AAA battery is not included)
Internal PCB board:
(In order to improve the quality and sound quality,
components are subject to change without notice.)
following items are included with your Order: QA860 Player *1
Remote Control * 1(not include AAA battery for
Power cable *1
16GB Class10 SDHC Card *1
SDHC SD USB 2.0
Memory Card Reader
English User Guide
Listed price: USD $929.99(Exclude shipping cost)
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real product on sale.
company reserves the rights of altering the characteristics,
specifications and design of the product so as to make
constant progresses in the performance of the product. The
detail of alteration is free from public notification.