digital stereo amplifier is a bold essay in the HiFi
amplifying field by QLS’s talent engineer team. Instead of
using a traditional DAC and an analog signal amplifier,
QA100 amplifies 2-way digital signals from CD/DVD players,
computers and digital music players directly, and the
amplified digital signals then pass through 2-way passive
LPF circuits to drive the stereo speakers. Because of
cutting off the traditional DAC and analog amplifying
elements, QA100 provides a way to reduce the TCO of your
HiFi system significantly.
QA100 is able to drive 4Ω@100W-8Ω@60W2 way bookshelf and
floor standing speakers smoothly with accurate, transparent,
high dynamic range and excellent transient response sound
QA100 implementsan ASRC circuit working together with a
high-precision, low jitter and temperature compensated
crystal to reform the sampling clock,therefore provides the
ability to improve the sound quality of the low or mid-end
source equipment remarkably.
QA100 designed as open loop digital circuits, thus there is
no stable problem even in driving speakers with very low
impedance. Moreover DSP technology is employed to correct
the expected deviation on the final outputs that made a
significant improvement for the amplifier’s line output
quality sampling clock reform circuits, CS8416 for
S/PDIF input and AD1896 for ASRC.
Customized switching power supply special designed for
HiFi system, and independent power supply loops for
different function units.
input: RCA Coaxial, BNC Coaxial, Optical, EBU/AES, I2S
format: 16bit to 24bit, 32K to 192K Stereo (sampling
rate and bit adaptive)
chip: TAS5162 *2
Master Volume: 0
~ 80; L/R Volume Trim: -5 ~ +5;
Use 2PPM TCXO
Crystal for ASRC (crystal JITTER is below 10PS) .
hamornic distortion (-2.5dBFS, 8 Ω) <0.06 %
Range, a-weighted 101 dB
ratio, a-weighted 102 dB
separation 92 dB
Frequency response, audio range (20Hz - 20kHz) +/-0.5dB,
AC 90V ~ 240V 50/60Hz
Impedance range: 2-8 Ω
Power output, 4 Ω 100W * 2CH Power
output, 8 Ω 60W * 2CH
Dimensions approx. 11.4" x 9.45" x 2.4" (with all the
Dimension: L440 X W300 X H110(mm)
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:
Remote Control * 1(not include battery for
Power cable *1
RCA cables for S/PDIF coaxial RCA digial input *1 User Guide
Price: USD $389.95
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