The X1 series was created back in 2008. Once the 1st gen was released, the innovative combination of USB DAC and high-power headphones amp attracted extensive attention worldwide and has been continuously well received till this day. Over the years, it has become one of the classic DAC with headphones amp products and also Aune’s signature series. The new X1s GT added clock technology and fully-discrete balanced headphone amp. It's destined to be a milestone of the series. With a computer the X1s GT can support up to 32 bit/786k DSD512. Play the Hi-Res music files or music from Apple Music HiFi online library. Get the high fidelity experience right away. Let it bring out your headphones/active speakers’ free potential. An X5s 8th Anniversary Edition digital music player, an X1s GT - the combo supports up to PCM384k and DSD128. Plug in your headphones or active speakers. Enjoy the fine little audio system. A Smartphone/Pad, together with an X1s GT, immediately turns into a mastertape-level streaming media center. Plug in your headphones or active speakers. The light system brings you great listening joy. The Aune X1s GT Bluetooth Edition, with the Qualcomm Bluetooth 5.1 chip, can easily get connected to a mobile phone and receive high-quality audio files from online music libraries. The special thing about it ist hat the bluetooth DAC frameworks uses PLL technology and the low-jitter clock (either the internal clock oft he X1s GT BT or the external clock) instead oft he original clock oft he Bluetooth chip. Bluetooth, too, can sound so good. The upgraded version of the classic B1 fully discrete headphone amp circuit, 4 x 24 BJTs, 227 components in total, positive and 9V power supply, balanced output. It just drives your headphones right and well. The ALPS potentiometer guarantees uncompressed dynamic. Feel the tactile volume knob and experience the fun of manual control. It's all in your hand.