2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. Want a low priced, fully professional RACK MOUNT bass head with over 300 watts of portable power? The MAG 300R is IT! This Ashdown bass head makes use of their famous solid state pre-amp and Mosfet power amp to give you classic British tone at an affordable price, and the power has recently been upgraded to just over 300 watts. Play the brand that some of the best bass players in the world play - move up to Ashdown! This model is not voltage swappable for foreign use.