Micro Ace is one of the dominant triumvirate of n scale manufactures in Japan - Kato and Tomix both being better known outside of Japan....Micro Ace clearly markets the broadest line of locomotives and freight cars among the 3 and arguably features the finest detail work on their products......
i acquired this set from a private party in japan.......in this tandem, both locomotives are motorized; they can operate in tandem or independently.....both locomotives attain n scaled operating speeds at the same point on the rheostat - 50% - perfect for tandem utilization... i believe prolonged operation may not only reduce that setting slightly but also reduce operating noise slightly as the set experienced infrequent utilization.....the head lamps are functional........