UPBRIGHT New 24V AC/DC Adapter for NAD PP-1 PP1 PP-2 PP2 PP 2e PP2e PP 4 PP4 Phono USB Preamplifier PreAmp Pre-Amp Amplifier Pre-Amplifier 24 VDC 100mA 23.5VDC 600mA 23.5V - 24VDC 1A Power Supply