LINUX AUDIO RESULTS SUMMARY
|Topping D90 MQA||AK4499||32Bit/768kkHz||DSD512||YES||XMOS XU216||★★★☆☆|
NO (breathtaking audio results but mega pops and clicks unfortunately… the D90 non MQA version is far better)
Topping D90 MQA
AK4499 Full Balanced DAC
High Quality Chips:
(MQA D90 Version)AK4499 is AKM’s flagship model. With current output architecture and 4-channel design. The D90MQA parallels the channels of the AK4499 in pairs for better performance. Only USB input mode support MQA decoding.
With the support of AK4499 and XMOS,D90 can support 32bit768kHz and DSD512 resolutions,and the data magnitude and resolution are far beyond CD and SACD.Customized German Thesycon driver(Win7 and higher).
Bluetooth 5.0 Tech:
D90MQA is equipped with CSR8675 chip, supports Bluetooth 5.0 well,supports LDAC/AAC/SBC/APTX/APTX LL/APTX HD and other audio encoding.24bit96kHz HD transmission can be achieved under LDAC encoding.(If you don’t need Bluetooth input, you can turn it off in the menu.)
Rich Input Interface:
AES,USB,OPT,COAX,IIS,Bluetooth input.Among them, USB,IIS support 32bit/768k DSD512 input;AES,OPT,COAX support 24bit/192k input,BT supports 24bit/96k input under LDAC;IIS input can be set in the machine,compatible with most IIS signals on the market using HDMI transmission.
It is currently the lowest jitter S/PDF receiver with good compatibility.It is used for D90 OPT,COAX, and AES receivers,all supporting up to 24bit/192kHz.
Topping D90 MQA VERSION
AK4418 Chips CPLD LDAC DSD512 PCM 32Bit/768kHz USB/AES/IIS/OPT/COAX/BT HiFi Hi-Res Audio Desktop Decoder with Remote Control
Optional Output:Because the D90 has a fully balanced structure,it is compatible with both balanced and single-ended outputs.You can choose any one output,the other is closed,or both.It is especially convenient when used with other devices.
Switchable Global Voltage:AC 100-120V 50/60Hz uses 115V,AC 220-240V 50/60Hz uses 230V.
DAC Flter Mode:D90 provides 6 different PCM filter modes to choose from, there is always one for you.
Bluetooth Decoder Application:Connect your mobile phone,tablet,and laptop’s Bluetooth to D90,and D90 will become your BT decoder.If your device supports LDAC transmission,you will get better sound effects.
USB IN:44.1kHz-768kHz/16-32bit,DSD64-DSD512 (Native),DSD64-DSD256(Dop)
BT:AAC/SBC/APTX/APTX LL/APTX HD/LDAC
LINE OUT RCA
Total Harmonic Distortion@ A-wt
SNR@A-wt,Dynamic Range@ A-wt:123dB@1kHz
Noise floor@ A-wt:<1.5uVrms
LINE OUT XLR
Total Harmonic Distortion@A-wt