Astell&Kern SEM2 Interchangeable All-In-One Dual-DAC Module (for SE180)

The SEM2 Asahi Kasei AK4497EQ Dual DAC is the first in a series of optional modules available for the A&futura; SE180 Digital Music Player. SEM2 allows you to give your SE180 a different sound than the bundled module, with the ability to play high resolution audio files up to 32-bit/768kHz PCM and native DSD512, so music fans can enjoy studio-grade sounds as the artist intended.

Next generation AMP technology is also applied in the SEM2 all-in-one module. From the selection of OP-AMP parts, to circuit design, board layout and tuning, everything has been completely redesigned to produce the best sound.

Even with a high output, the signal-to-noise ratio of SEM2, one of the important measurements of audio performance, boasts an amazing 127dB (based on AK4497EQ Dual, Balanced, High Gain).

By physically separating the main body of the SE180 from the all-in-one module, A&K have completely blocked power and RF noise that may occur.This creates an independent structure that prevents noise from interfering with music playback.

Balanced and unbalanced signals are separated for each channel to provide the best possible sound through independent circuit design without interference.

SEM2 also benefits from Astell&Kern’s TERATON ALPHA technology. This is AK’s ultimate sound solution to produce audio playback that remains close to the original sound, through the audio output interface, by use of effective power noise removal, efficient power management and amplification with minimal distortion.

TERATON ALPHA features Astell&Kern patented technologies, the result of tens of thousands of hours of continuous research and development. TERATON (teratone) was born based on AK technology. It is a compound word comprising of Tera, which means 10 trillion + Tone, which represents the device and vast A+ tone of Astell&Kern.

See also SEM3 Quad-DAC Module for SE180 Digital Audio Player

Features

• Dual DAC module compatible with the A&Futura SE180 player only.
• Features dual AKM AK4497EQ DACs.
• Support for high-resolution audio playback up to native DSD512 and 32bit/768kHz.
• Supports unbalanced 3.5mm and balanced 2.5mm/4.4mm headphone connections.
• Robust aluminium, stainless steel and polycarbonate housing.

Specifications

• Model: SEM2 DAC module
• Body Colour: Moon Silver
• Body Material: Aluminium
• Sample Rate: PCM 8kHz ~ 768kHz (8/16/24/32bits per Sample), DSD Native: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo / DSD512(1bit 22.4MHz), Stereo
• Output Level: Normal Gain – Unbalanced 2Vrms / Balanced 4Vrms (Condition No Load), High Gain – Unbalanced 3Vrms / Balanced 6Vrms (Condition No Load)
• DAC: AKM AK4497EQ x2 (Dual DAC)
• Decoding: Support up to 32bit / 768kHz Bit-to-Bit playback
• Outputs: Unbalanced Out (3.5mm), Balanced Out (2.5mm, only 4-pole supported / 4.4m, only 5-pole supported)
• Wi-Fi: 802.11 b/g/n (2.4GHz)
• Bluetooth: V5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)
• Dimensions: 77 x 76 x 9.9 mm (WxHxD)
• Weight: 100g

Included

• 1x SEM2 AKM AK4497EQ x2 (Dual DAC)

More Information

• Astell&Kern SEM2 All-In-One Dual DAC Module