A & norma SR15
Hi-Fi Standards Redefined, A & norma SR15
A & norma sets the standard of Hi-Fi audio for novice listeners. The SR15, the first model of A & norma, is the beginning point of the Hi-Fi Audio experience that allows you to enjoy the philosophy and technologies of Astell & Kern, which is accolated by audiophiles around the world.
Dual DAC of CS43198, MasterHIFI™ tier chipsets from Cirrus Logic
Enhanced audio processing power and snappy UI with Quad-core CPU
Native DSD playback and playback-focused User Interface
Powerful audio performance curated by Astell & Kern's know-how
The SR15 is the first model of Astell & Kern's newly introduced standard line.
The A & norma SR15 uses two audio DAC chips for a Dual-DAC setup.
These chips are known for their use in Home Hi-Fi systems which offer greater
presence compared to the inferior DAC chips designed for mobile devices.
There are many devices that use DAC chips for audio processing, however there are
different tiers and quality of chips sought by Hi-Fi audio manufacturers to deliver an
experience close to the original performance.
A & norma SR15 has adopted the MasterHIFI™ class DAC, CS43198 for the first time in a
portable system. At Astell & Kern, we believe that true Hi-Fi should sound as close as
possible to the original performance. The CS43198 is one of few DAC chipsets that is
capable of bringing us even closer to the original when it's matched with the analog
amp design of Astell & Kern. In result, it brings even more liveliness and warmth of
sound without distortion.
Furthermore, A & norma SR15 supports native DSD bit-to-bit, and gets one step closer
to the Hi-Fi system.
Cirrus Logic has built its reputation as an expert in audio IC (Integrated Circuit) chips and solutions for more than three decades and has established its distinguished recognition in the audio industry.
Specializing in low power ICs for audio and voice signal processing applications, Cirrus Logic's products span the entire audio signal chain, from capture to playback, providing innovative products for the world's top smartphones, tablets, digital headsets, wearables and emerging smart home applications. Now they have introduced the MasterHIFI™ chipset solutions for excellent audio reproduction performance.
MasterHiFI™ class designation is only given to their chipsets that meet their highest audio performance standard. It will deliver your music as the musicians and producers wanted you to hear it.
Technical Specifications:-
General Specifications:
Body Color: Dark Gray
Body Material: Aluminum
Display: 3.3inch WVGA (480 x 800) TFT LCD
Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
Sample rate:
PCM : 8kHz ~ 192kHz (8/16/24bits per Sample)
/ DSD Native : DSD64(1bit 2.8MHz), Stereo / DSD to PCM : DSD128(1bit 5.6MHz)
Output Level: Unbalance 2.0Vrms / Balance 4.0Vrms (Condition No Load)
DAC: Cirrus Logic CS43198 x2 (Dual DAC)
Decoding: Support up to 24bit / 192kHz Bit to Bit Decoding
Input: USB Micro-B input (for charging & data transfer (PC & MAC)) / Connection Mode : MTP (Media Device)
Outputs: PHONES (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)
Wi-Fi: 802.11 b/g/n (2.4GHz)
Bluetooth: V4.1 (A2DP, AVRCP, aptXtm HD)
Dimensions: 2.26 ”(57.5 mm) [W] x 3.92 ”(99.7 mm) [H] x 0.63 ”(16.1 mm) [D]
Weight: about 5.43 oz (about 154 g)
Feature Enhancements: Firmware upgrades supported (OTA)
Audio Performance:-
Frequency Response:
±0.030dB (Condition: 20Hz~20kHz) Unbalance / ±0.024dB (Condition: 20Hz~20kHz) Balance
±0.038dB (Condition: 10Hz~70kHz) Unbalance / ±0.065dB (Condition: 10Hz~70kHz) Balance
Signal to Noise Ratio: 122dB @ 1kHz, Unbalance & Balance
Crosstalk: 137dB @ 1kHz, Unbalance & Balance
THD+N: 0.0008% @ 1kHz, Unbalance / 0.0009% @ 1kHz, Balance
IMD SMPTE: 0.0004% 800Hz 10kHz(4:1) Unbalance & Balance
Output Impedance: Balanced out 2.5mm (1.6ohm) / PHONES 3.5mm (1.1ohm)
Clock source:-
Clock Jitter: 70ps (Typ)
Battery:-
Capacity: 3,150mAh 3.7V Li-Polymer Battery
Memory:-
Built-in Memory: 64GB [NAND]
External Memory: microSD (Max 400GB) x1
OS:-
Supported OS: Windows 7,8,10 (32/64bit), MAC OS X 10.7 and up