The Sound Devices MX-8AA Battery Sled powers the MixPre Original Series, MixPre-M Series, and MixPre II Series recorders. Included battery sled for the MixPre-10 II. Optional accessory for the MixPre-3 II and MixPre-6 II audio recorders. This sled holds eight AA batteries. Rechargeable NiMH batteries are recommended.
