Raising the bar in audio performance

The HELM BOLT DAC/AMP is the High Definition Digital Analog Converter with MQA rendering technology to bring studio quality audio to your phone. Imagine 4k video for your ears. Master Quality Authenticated (MQA) is an award-winning technology that unlocks every detail of the original master recording with the convenience of streaming audio. MP3 and similar streaming technologies deliver 10% of the original recording quality, but the HELM BOLT can stream and unfold MQA music at over 8 times the sampling rate of CD. Stream MQA content from Tidal, Nugs and Xiami.

The HELM BOLT is also an amazing sounding High-End Digital Analog Converter for your high-res FLAC or WAV files, and it will improve audio quality while streaming Apple Music, Spotify, Amazon, and others. supporting playback of PCM files with sampling rates up to 384 kHz, or DSD files with sampling frequencies up to 5.6MHz. It is THX Certified for ultra-low harmonic, crosstalk, and crossover distortion. Unlike other mobile MQA-DAC designs, the HELM BOLT physically isolates the DAC from the USB connector for improved performance, and uses a three oscillator design for superior frequency lock with dramatic improvements over single oscillator DACs. Featuring a USB-C input and a 3.5mm audio output to connect to your wired headphones or speaker system. Headphone output level automatically detects headphone impedance and sets the level accordingly.

Compatible with Android, iOS, MacOS & Windows 10. iOS requires a Lightning to USB Camera Adapter.

Specifications