Very good, putting aside the Pre's outboard plastic box power supply, it was a super pre-amp, very thick extruded aluminium sleeve. Loved the way the rear was contructed at an angle so all the socketry fired upwards. Never ever seen the power amps for sale since..
The Townshend Pre/Pwr..Rock/Merlin/Excalibur/555 was one hell of a good system.