Pair of Audio Research Monoblock Tube Amps. The Reference 250 SE amps are the sweet spot in the Audio Research line. Just put a new tube set in from Audio Research. They have 2 hours on them. All accessories and factory boxes included. They sound and look great. These units were originally Sonus Faber floor models, and were purchased from them and upgraded to SE models.
From Audio Research website:
The concept of a large monoblock amplifier is to provide control to a speaker. The difficult part of the job is maintaining finesse and musicality while doing it. Audio Research has produced some of the most critically acclaimed products during its 42-year history and the new Reference 250 SE aims to break new ground. From the moment the music begins, the foundation of an exceptional musical experience is evident. Sound emerges from an inky black background, revealing microdetails and performance cues typically reserved for the live performance. Substantial, fundamental bass underscores the event with resolution and textural accuracy. Space around performers and groups of instruments stretch before you onto a lifelike stage with scale and body. Dynamics swing from silent passages to grand fortissimos without effort or strain. This is high definition listening.
The Reference 250 SE features new enhancements outside as well as major performance advances inside. First, you will notice a more modern, monochromatic appearance, including a new front panel with a small aluminum power button. An analog meter with adjustable illumination is set in the front panel is capable of displaying power output and tube bias settings. A new low turbulence fan provide effective yet silent cooling. Internally, the Reference 250 SE is outfitted with the KT150 output tubes and a bulk power supply 50 percent larger than its predecessor. Connections include accommodation for 4, 8 or 16 ohm speakers, an XLR input as well as 12 volt trigger connections.
Visually understated and sonically breathtaking, the Reference 250 SE is unmistakably Audio Research.