The TRA-4150 Power Amplifier from Ashly is a reliable,
superior sonic quality and rugged solution that has a switch-
mode power supply with Class-D circuitry. It is perfect for
low impedance, 25 Volt, 70 Volt or 100 Volt installations.
The TRA-4150 is convection-cooled, so there is little
requirement for maintenance after the installation, plus no
annoying fan noise. It features TRA audio controls on the
rear panel. The TRA-4150 can drive 25V constant voltage lines
utilizing the direct coupled 4 Ohm output.