The unit is in excellent condition, fully tested and in working order. It has a couple of small marks but nothing major. Power cable not supplied. 

The Palmer PDI03 is a speaker simulator DI box designed for guitarists and bassists. Here are its key features and specifications:

• Speaker Simulation: The PDI03 is designed to capture and replicate the sound of an amplifier without the need for a microphone. It features a built-in filter with two switchable filter presets, allowing users to adjust the tonal characteristics of their signal.

• Outputs: It includes a balanced XLR output for direct connection to a mixing console or audio interface, as well as an unbalanced 6.3mm output jack for connection to an amplifier.

• Filter Presets: The device features two on-board switches that can switch between 9 different filter presets, emulating various types of speakers and cabinets, such as an open back 2 x 12" combo, 4 x 12" cabinet, or full stack.

• Voicing Switches: The PDI03 includes Deep / Normal / Flat voicing switches and Bright / Normal / Mellow voicing switches, providing a wide range of sound options.

• Attenuator: It has an attenuator with settings of 24/12/0 dB, allowing for volume control.

• Ground Lift Switch: The PDI03 features a ground lift switch to eliminate unwanted noise and interference in the signal chain.

• Power Supply: The device can be powered by a 9V battery or an external power supply, providing flexibility for different performance situations.

• Build Quality: The PDI03 is housed in a robust metal chassis, making it suitable for use in both studio and live settings.