Used Universal Audio Ox Amp Top Box Power Attenuator

Experience cranked-tube tone at any volume with this used Universal Audio OX Amp Top Box in great condition. This reactive load box and power attenuator captures your amp’s feel while providing world-class speaker, mic, and room modeling for direct recording or silent practice. Features include 8-ohm and 16-ohm inputs, line outputs, headphone monitoring, and Wi‑Fi control via the OX app. Ideal for studio-quality tones without shaking the walls.