NSA-250 is an ideal solution for residential and commercial audio installations that require a simple setup and great sound output. 

Easily add multiple NSA-250 to create a whole home music system with multi-room sound in your home, you can easily group the zones and stream the same song to all rooms, or play different songs from any player in any room from your favorite music apps or library using your phone, tablet, or computer.

It supports WiFi streaming, Bluetooth, Airplay, DLNA & UPnP compatible, you could streaming from the most popular online music services with tens of millions of songs and thousands of radio stations, such as Spotify, Tidal, Napster, TuneIn & iHeartRadio on both Apple & Android devices

With the compact size and Class D circuit, the amplifier can easily be mounted at the indoor area. The amplifier can be used in a stereo system with a subwoofer output. The inputs consist of wireless Streaming/Bluetooth, S/PDIF, USB and RCA Aux input.

Built-in 2.1 Class D 2 x 50W RMS @ 4 ohms amplifier with Gold-Plated speaker wire binding post connectors with an internal DAC that supports up to 24bit 192kHz sample rate, delivering the excellent audiophile sound quality to a pair of stereo loudspeakers and an active subwoofer speaker

With these built-in functions, NSA-250 amplifier is suitable for wild range of applications, including home stereo sound system, personal entertainment, store, restaurant, conference room, etc.

Feature:

- 2 x 50W Class D 2.1 Digital Amplifier 
- Selectable Input Source: AUX RCA/OPTICAL/ BT/USB/WIFI IN
- SUB Out to another amplifier or Active Subwoofer
- Volume/EQ Adjustable
- Designed in aluminum extrusion rack
- IR Remote Control
- Universal power supply

Specification:

Power Output: 2 x 50W (RMS @ 4Ω)
THD: <1% (Rated power: 25W @ 8Ω)
S/N: >90 dB A WTD
Frequency Response :20HZ~22KHZ +0/-2dB@ 8Ω
Adjustable Volume: Min – Max
RCA Input Sensitivity: 700mV
Thermal Protection: Yes
Short Protection: Yes
Bluetooth Version: 4.2 
USB Version: 2.0
Music Files Format:  Support MP3 / WMA / ACC / ACC+ / ALAX / FLAC / APE / WAV
Wireless Network: Support 802.11b/g/n. Compatible with Apple Airplay, DLNA
Dimension: 200mm x 47.5mm x 160mm (WxHxD)
Weight: 1.5Kgs