Sound Devices MX-HIROSE - DC Input Sled for MixPre SeriesHirose DC Input Sled. Powers MixPre Original Series, MixPre M Series, and MixPre II Series recorders. Input range: 10 20 V DC. Features locking DC input. To remove the MX HIROSE from the MixPre, press in the release tab. On the MixPre 10 II, it is necessary to use a flat blade screwdriver or similar tool. Sound Devices recommends plugging in a right angled Hirose connection, such as this, before attaching the MX HIROSE to the MixPre.