Synergy has a lot to do with good sound, the Zesto / Toolshed pairing is such a great match. When I got the Zesto , it revealed how good those Quicksilvers are.
As great as those Mid Monos have been,, the Toolshed 300b is in a completely different league. It is amazing in it's ability to render a three dimensional image . I have spent about 5 or 6 hours a night since Sunday playing song after song . Some that I'm very familiar with, some are completely new to me .
My mental notes while listening have been ; amazing clarity , huge image extending way beyond the speakers. They disappear. Clarity , accuracy, realism, lifelike, are all things that i keep saying in my head.
Little sounds like tapping the top of a guitar, the inhale / exhale as a singer projects, the ambiance of the venue are all revealed with this amp.
Bass is solid and incredibly tight, and deep. I keep thinking this is only 7 watts? Most surprising are the lower registers of a piano.
There is a connection to the music that is so engaging that I am completely not thinking about the hardware, I am thinking about what song I am going to play next.
I can say without reservation that this amp was worth the wait and worth the money.