Make sure you plug your headphones in to the BOLT DAC before plugging the USB in to your playback device.
|Platform||PDF Guide Download||Video Guide|
|IOS||BOLT GUIDE IOS TIDAL||BOLT VIDEO GUIDE IOS TIDAL|
|Android||BOLT GUIDE ANDROID TIDAL||BOLT VIDEO GUIDE ANDROID TIDAL|
|Windows||BOLT GUIDE WINDOWS||BOLT VIDEO GUIDE WINDOWS|
|BOLT GUIDE WINDOWS AUDIRVANA|
|BOLT GUIDE WINDOWS FOOBAR 2000|
|MacOS||BOLT GUIDE MACOS TIDAL||BOLT VIDEO GUIDE MACOS|
|BOLT GUIDE MACOS ROON|
|BOLT GUIDE MACOS AUDIRVANA|
You can listen to lossless audio on an iPhone or iPad updated to iOS or iPadOS 14.6 you need an external digital-to-analog converter, the HELM Audio BOLT USB DAC/AMP.
How to turn lossless on or off on your iOS device
1. Go to Settings > Music. Tap Audio Quality. 2. Tap Lossless to turn it on or off. From here, you can choose the audio quality for streaming and downloading audio. *Select Lossless for a maximum resolution of 24-bit/48kHz, or select Hi-Res Lossless for a maximum resolution of 24-bit/192 kHz
Final step is to connect your headphones to the BOLT. Connect the BOLT to the included USB-C to USB-A adapter, and connect the USB adapter to Apple’s Lightning to USB Camera adapter, and connect it to your iOS device.
You can listen to lossless audio on a Mac updated to macOS 11.4 you need an external digital-to-analog converter, the HELM Audio BOLT USB DAC/AMP.
How to turn lossless on or off
Open the Apple Music app. 1. In the menu bar, choose Music > Preferences. 2. Click the Playback tab. Under Audio Quality, select or unselect Lossless to turn it on or off. From here, you can also change the settings for streaming and downloading lossless. *Select lossless for a maximum resolution of 24-bit/48 kHz, or select Hi-Res lossless for a maximum resolution of 24-bit/192 kHz
Final step is to connect your headphones to the BOLT and then connect the BOLT to a USB port on your Mac.
|Product Name||HELM BOLT USB DAC|
|Output Level||1.1 Vrms at <150 Ohms, 2 Vrms at >150 Ohms|
|Compatible Formats||PCM, MQA, DSD DoP|
|Connectivity||USB-C INPUT, 3.5MM OUTPUT|
|THD+N%||0.0008 at <150 Ohms, 0.0013 at >150 Ohms|
|Frequency Response 20Hz-20kHz||+/- 0.06 dB|
|Dimensions||Length 112 mm (4.4”)|
|Weight||7.09 grams (0.25 oz)|
|Physical||USB Type-C Interface|
|Connection||USB 2.0 High Speed|
|PCM Sample Rates||44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz|