This is another remarkable preamp from Mark Levinson and is the CAMAC/XLR version. Power supply is kept separate in its own casing and can/should be kept far away from the main control unit. The No.28 is a delicate preamp. It has the very distinctively clean and swift sound that is commonly associated with Mark Levinson preamps. With some “dry” sounding power amps, the system may sound too sterile but with warmer sounding amps (we like British amps), it makes a nice pairing. The preamp is also all business about producing the best sound for its price range. There is no remote control feature and its associated electronics to corrupt the sound so it is all pure and simple inside. There is not even and on/off switch so bear that in mind if you decide to get this. It is designed to be left on all the time so that it is electronically stable when you are ready to enjoy some music with it. Mint condition and comes with the original double boxed