The Pass Aleph P Preamplifier is a Creation of the Legendary Audio Creator Nelson Pass. The Preamplifier is based on the Concept of Simplicity. The Build Quality is Outstanding. The chassis is Constructed of Solid Machined Aluminum. The Front Panel consist of Pass Aleph P deeply Engraved,Source, Right, Left,Rotary Selector Knob, and Knobs to Control the Right and Left Channel Gain.The Rear Panel consists of Single-End RCA and XLR connections. The XLR has Shorting Plugs if You don’t have XLR System Capabilities. The Sound of the Preamplifier does not add undue influence to the Sound Experience. The Preamplifier is Built like a Tank and Sounds like a Dream. The Preamplifier works Perfectly I’m just trying to find its good Home. I paid close to $5000 for this Preamplifier.I am also including a great Power Cable much better than the Stock AC Power Cord.