The Tubes4Hifi Vacuum Tube Audio (VTA) tube amps are excellent bang for the buck. Their service and support is wonderful, and they have a significant following.Quicksilver are great amps. They cut non-sonic corners to allow great sonic bang for the buck. ALL amps REGARDLESS of COST can be improved - or not - depending on the system in which they reside.
Their factory wired M-125 monoblocks (125wpc) are $2700 plus shipping, less if you buy in kit form.
M-125s can be made great sounding and reliable. They are at best a 50-50 proposition out of the box.
See ieLogical VTA M-125 for results after 2 years and hundreds of hours of work. Read from the top for the whole sorry Tubes4HiFi story. Dozens have written with similar tales of woe.