Spring 3 KTE with pre amp, the original box, cord and manual. Has the recent holo audio uac2.0 gen2.1 enhanced. I've updated the firmware to the latest. Works with ios. I've set the volume to max bypassing the pre amp, using the volume control on my tube amp. Compared it to maxing the volume on the tube amp and using the pre amp volume control and I couldn't tell the difference using the pre amp or tube amp volume control. 2nd owner, warranty does not transfer. Purchased beginning of September. Price includes shipping and insurance.