Member of the Trade: Soundaware
- Sep 19, 2013
The design of A280C is based on SOUNDAWARE national patented professional high-fidelity streaming music playback architecture, which bases on the FPGA and dual native audio crystal oscillator to decode the audio file(including original decoding DSD files), obtaining highest performance and minimum jitter.
The technology of A280C is similar with A200. It inherits much optimization experience and circuit structure from A200, having the same quality, but function is more utility, except she has no symmetrical full balanced amp. But she has her own preamplifier, and could be used as digital dial player, independent DAC and headphone amplifier.
Music files could be input into the device from network or hard disks, like USB interface. Latest DLNA and Samba is supported from network interface. For the output ends, coaxial and optical digital output interface, and RCA analog output interface are set on the back side of the device. Besides above general interface, coaxial and optical input are added, which means it could be used as an independent decoder.
Totally, A280C is a super desktop with concise, convenient, utility features, meanwhile also ensures the advanced High fidelity effects.
CPU is in charge of outside facility, interface and control, while FPGA handling hard decoding and digital music optimization with the excellent audio digital clock. The two proceeds andDAC proceed are completely isolated, without mutual influence, which could ensure the best performance.
SD*1: theoretical maximum storage is 2TB, actual inspect is 128GB, support the format of FAT32 and
USB*2 (power supply 500ma*2): support USB1.0,USB1.1,USB2.0, compatibly USB3.0，
support Hard disk 4TB and 2TB partition, both at Maximum.
Internet: 100Mbps Full Duplex, support NAS(Samba), UPNP/DLNA V1.5.
Power supply: 230V or 115V (sees the specification on the package), 50-60Hz
Coaxial Input: 16-24bit, 44.1khz-192khz PCM
Optical input: 16-24bit, 44.1khz-96khz PCM
Coaxial output: 16-24bit, 44.1khz-192khz PCM; DSD64 DOP1.0
Optical output: 16-24bit, 44.1khz-96khz PCM
RCA*2:1.8V RMS THD+N: <=0.003% (44.1khz, 1khz DS3)
Phone Out：8.5V RMS THD+N:<=0.002%(44.1khz, 1khz DS3)
Power dissipation: <15W (no USD hard disk),Standby Dissipation:<=5W
Dimension: 240W*103H*305D m³
Weight (with the package): ~6kg
1) Remote control
Below format just support stereo music with 16-32bit( 32bit just support Integer)
FLAC: all compression grade of 32khz~192khz
APE: below the compression grade of 32khz~48khz Extra High
AAC: 44.1khz, normally compression grade
Mp3: 44.1khz, normally compression grade
AIFF: 44.1khz, normally compression grade
DSD (DSD64 not the compression from DST)
DSF, DFF, SACD ISO
2) DLNA/UPNP(phone, tablet, computer play, local push)
Besides the format which are supported by the remote controlling, will exploit to support more format of PCM, DSD.
Support CD-One: play CD and ripper from the CD actually, to be CDT or CDP
Support the connecting play between ISO and CUE seamlessly
Remote control unit*1 Cable wire*1 16G SD card*1 Power line*1 User manual*1 Warranty card*1
1) Player’s language: Simplified Chinese, Traditional Chinese, English
2) Displayed Language: Simplified Chinese, Traditional Chinese, English, Russian, Japanese, Korean, French, German, Portuguese, Spanish, Italian, Hindi, Arabic, Greek
Some explanation on original decoding PCM or DSD format files
PCM and DSD, which one is better? The argue of the topic has lasted for a very long time. Under equal amount of information, the discrepancy is obvious. However, in the same device, the musical medium with more information absolutely has more advantage. It is not affected by the format DSD or PCM.
The sample time of PCM is equal, and the sampling time interval is related with sampling frequency. The sampling frequency could be increased to approach to the analog signal at the best, ensure the signal is simulated digitally.
Then the DSD is different from the PCM. When the signal sharply changes, the data sampled in this period of time could be very large; otherwise, when the signal is flat, the sample data would be very little.
For SACD ISO and 176.4khz PCM digital music, the file size is almost the same. But with one analog signal, choose PCM or DSD to sampling and playback, the effect is very different. The core reason is that the PCM is sampled by equal time, which makes the sound more sensitive on the dynamic. However the DSD playback makes the sound more smooth, less harsh, since the DSD can exactly react the change trend. And also the proceed of original DSD digital converted to analog is concise, and the sound is more analog than by converting DSD to PCM. No matter which sampling type is used, the importance is the original playback. If the device does not operate DSD original playback, the DSD data would be converted into PCM data firstly, then the proceed of Digital to Analog signal is also operated by PCM.
A280C short review in Chinese
Soundaware Audio Co.,Ltd.
Room 4-409, Mingfa Commercial Plaza, No.99 Yulan Road,Nanjing City, JiangsuProvince, P.R.C.
Mon - Sat: 9:00 am to 12:00 and 13:00 to 18:00
Close on Sunday and Public holidays
Post code: 210000
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