I have had and loved TH500 heads. How does the AG compare?
I'm a bit of an old school punk, rock, alternative, garage bassist, finger style only,
where bass tone lived in the bottom end and technical fancy stuff in the mids and highs, were left to the guitarists and, ***I've never got along with class D amps at all.***
So my opinion and experiences may not be applicable or beneficial to you or anyone else.
I found the TH500 was over articulate in the mids and highs and failed IMO, to replicate the lows I love.
Mids and highs were irritatingly brittle and harsh, the lows were pillowy and mushy and definition was lacking. I just could not eq these problems out. I could never find anything between these two extremes. I found the same issues with the TH preamp pedal too.
All the gigs I've been to, where the TH range of amps were being used, there was never any bottom end to speak of from the bass. All bottom end was assigned to the drums.
Was this deliberate?
To me, although the music was clear, energetic and tight, having the bass in the same tonal region of the guitars, deprived the music of hard hitting gut punching drive and feel and made what was potentially great music, plain old generic.
The AG700, I first heard it at an All Aussie Rock show about a year ago, played through a 410 cab (Ampeg?).
I was thoroughly impressed. It was clean and replicated my 'go to amps' bass tones nicely with, dare I say it, way better mids and highs.
When I finally got the chance to use one, it was a case of plug in, set and forget. There was no fighting with the eq section. The overall tone was impressive. I really enjoyed just playing and not worrying about preamp settings.
If I could justify the price (Aus $2000) and keep the missus from castrating me, I'd go out and order one today.
***The AG700 is the only class D amp that I've ever really considered purchasing***