Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_10
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_4
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_8
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_2
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_1
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_9
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_5
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_3
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_6
Concept-Kart-Quloos-QA390-DAC-Decoder-Headphone-Amplifier-Black-1_7
Sold Out
Quloos

Quloos – QA390 DAC Decoder Headphone Amplifier

A truly all-in-one machine 1+1+1+1>4 | Dual 1000000uF super capacitor | 4 18650 batteries 13200mAh | Aluminum Housing Shielding Design | More than 30 Ultra low noise power chips | AK4497*2 | AD797*2 | PGA2311UA | All to DSD | Dual Femtosecond crystal | Global unified clock | 11 Selected op Amps | 8 Dual High Current transistors | 6 headphone Jacks | 3 Thrust Mode | 4 Sets of hardware gain | 6 filters mode | Dual tuning Firmware switching mode | Dual USB Interface | HWA HD Bluetooth | Power Management Mode

Rs. 116,920.00
Unit price per

QA930 MOVABLE DESKTOP PLAYER

A truly all-in-one desktop player integrates the power + player + decoder + amplifier, and all the connections and collocations are done internally and carefully, to maximize the design and tuning of each part, to achieve a 1+1+1+1>4 effect, so users can hear the great sound. Powered by a 13200mAh battery, protected from external factors. There is no front end, no connection line, no need to plug in, no need to toss around, no need to match each other, and it is unaffected by the electrical environment. It is designed to meet the internal current and voltage standards of high-end desktops.

POWER CIRCUIT DESIGN THAT IS LOWER THAN BATTERY NOISE

For the Power Supply of digital circuits, the battery is not clean enough. To solve this problem, we use a large number of LT3045 Chips, which have a lower noise level than the battery in the QA390, removing all interference from the power supply. The noise generated by this chip is 0.8μVRMS, which is much lower than the noise generated when the battery is working (the noise is about 2.7uV when the 3.7V lithium battery has a 500mA load). At the same time, the chip has a low frequency of nearly 100dB and a high frequency of 76dB at 1MHz. Power supply ripple rejection eliminates interference from power supplies.

DISTINCT FROM THE BATTERY CIRCUIT OF THE PORTABLE PLAYERS

Battery life for portable players is typically 2 ~ 3A, which makes sound scale, dynamics, and momentum less natural than on desktop players. The battery used in the QA390 can achieve a single discharge current of 10A, and we use multiple parallels to further reduce the internal resistance while the current capability is several times. The current explosive force exceeds the power supply of many machines that use 220V. In addition, the analog and digital inputs of the power supply circuit each have a 1000000uF super capacitor, which provides further protection for the instantaneous current. Its excellent sound is due to the highly efficient power supply system it has

RELATIVE REFERENCE STANDARD FOR IDEAL SOUND

By generating a set of a desktop-level isolated regenerative power supply that is unconstrained by volume, it solves problems associated with the traditional AC power supply, making the sound more stable and stable, so that everyone can hear the music you want to hear. The QA390's battery-powered sound is greatly unaffected by any external factors and is ideal as a relative reference for good sound.
• Four 3000maH Panasonic (Formerly Sanyo) 18650 batteries provide a total battery capacity of 13200mAh
• Each battery is charged independently by the Four Way fast charging chip. The ideal diode + ultra-low internal resistance MOSFET is used for discharge management to ensure sound quality.
• You can charge the machine with the existing mobile phone charger (including fast charge) or charging treasure, easy to use.
• Perfect battery overcharge, over discharge, over current, short circuit and over temperature protection circuit to ensure safe use.

DUAL SUPER CAPACITORS & FEMTOSECOND CYRSTAL DESIGN

Support for digital and analog partial isolation power supplies with dual 1000000uF super capacitors, similar to dual transformers for desktop power supplies. High-speed accurate timing control of CPLD clock processing and digital audio signal optimization.

GLOBAL UNIFIED CLOCK AND SYNCHRONOUS WORKING MODE

Maintain The most important power supply that affects the clock, reduce interference, ensure accuracy, and ensure the playback system is synchronized with a very accurate clock. Referring to the dCS monolithic clock synchronization supply contains a global synchronization source that is equivalent to the clock synchronization function between the audio and the DAC

ALL TO THE DSD MODE & LISTEN MORE THAN CD

ALL To DSD mode can upgrade all formats to 1Bit, 5.6448MHz, DSD128 high resolution, even if the original signal is PCM. The Following square wave output analysis is the measured figure.
• PCM Output square wave analysis figure
• PCM to DSD output square wave analysis figure
Based on the comparison of the above measured wave forms, it is clear that ALL To DSD is more purified and has less harmonic distortion than the original PCM direct output signal.

PROGRAMMABLE ANALOG POTENTIOMETER VOLUME CONTROL SOLVES LEFT AND RIGHT IMBALANCE AND DIGITAL LOSS

The lossless analog volume adjustment ensures good sound quality at low volumes: the adjustment range is wide, the adjustment process is very thin, and the left and right channels are almost completely balanced, thus ensuring a wide range of precise volume control. In order to achieve high sound quality, QA390 uses the PGA2311UA, which has a higher price and a lower distortion rate, instead of the PGA2311U.p>

DUAL FIRMWARE SWITCHING MODE, TUNING STYLE IS BRIGHT AND MELLOW

Power management mode: The digital output can be turned off, the output of the LINE OUT module can be turned off, the output of the front stage can be turned off, or the output of the amp can be turned off. The Bluetooth and USB are only powered when they are used.

FULL CNC ALUMINIUM HOUSING

Optimized design of traces inside the system, isolation and shielding design of high-frequency interference between modules, digital and analog isolation design on the chassis, and partition shielding design in the entire CNC aluminum enclosure, which greatly reduce EMI interference.

Model
QA390 Digital to Analog Converter
Internal playback storage
One external SD card or TF card with card cover, in FAT32 format, the upper limit is 512GB.
Supported Code Rate
16- 32Bit, 44.1KHz ~ 352.8KHz, DSD64 ~ DSD128
USB Interface
Micro Port: Using SA9227 interface, iOs phones and PC do not need camera kits, with 32Bit/384KHz PCM and DSD128
Bluetooth
Bluetooth 5.0, Support AAC and SBC
Coaxial Input
75Ω matched impedance, supporting 24Bit/ 192KHz and DSD64 (DoP)
Optical Input
supports 24Bit/ 192KHz and DSD64 (DoP)
Coaxial output
0.5Vp- p75Ω, supports 24Bit/ 192KHz and DSD64 (DoP)
Optical output
supports 24Bit/ 192KHz and DSD64 (DoP)
Frequency Response
20-20KHz
SNR
122dB
Dynamic range
121dB
Distortion
0.0005%.
Low Output level
•RCA (L&R) 2.5V (preamp closed)
•XLR (L&R) 5.0V ((preamp closed)
•SE (unbalanced) Max 10.5Vrms (high voltage in amp, ultra-high gain, 600Ω load)
•BAL (balanced) Max 21Vrms (high voltage in amp, ultra-high gain, 600Ω load)
Supported impedance of headphones
80-600Ω
Decoding chip
ES9038PROx 1
Volume control (including preamp volume control)
PGA2311UA analog program-controlled
Reference clock jitter
0.038 picoseconds (38 femtoseconds)
Charging interface
Type-C port or DC port, which supports fast charging and is compatible with QC standards.
External power supply
DC 5.5*2.1 port, which can also be charged at the same time (panel switch)
Battery life
About 8.5 hours (depending on setting, music format and load)
Charging time
Type-C standard: 8~ 9 hours, Type-C fast charging /DC port: 4~ 5 hours
The Material of unit & remote control
Aluminum CNC
Product weight
3.1kg (Included the package)
Size
20cm X 18cmx4.45cm
package size
33cm X 27cm x 9cm
What will you get:
  • 1*QA390 limited version
  • 1*SanDisk 64GB TF card with card set)
  • 1*USB3.0 card readers
  • 1*USBAD to port B cable
  • 1*TYPE-C charging cable
  • 1*External power supply (charging)
  • 1*Infrared remote controller

1 YEAR WARRANTY

Don't worry, Quloos QA390 DAC Decoder Headphone Amplifier comes with a 1 Year warranty against manufacturing defects. We guarantee that every product on Concept Kart is genuine and backed by the Manufacturer's warranty.

Read more about Concept Kart's warranty policy.

Customer Reviews

No reviews yet
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Customer Reviews

No reviews yet
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)