The Tube Research Labs 4 chassis 800 Watt amps weigh in somewhere around 1200 pounds total. Winston Ma of First Impression Music purchased the first set back in 1991, and has retained them as his reference amps since. Photos are available at www.savantaudio.com for those interested, and no, I'm not involved with Savant Audio. I've heard Winston's system many times, always impressed how such a large tube amp still retains the delicacy of a lower powered amp.
