Lampizator Amber - moving up the range?

Hey all,

I have a Lampizator Amber plus. I've managed to get massive improvements to it by putting rare NOS valves in. Really liking this piece of kit. I feed it with an Auralic Aries streaming Tidal. 

What are the higher range Lampizators like? Would I see a small or large improvement from upgrading?

Thanks, Tim
Hey Jbrrp1. I'm PCM only for this. Understood that there's a difference. Any way you could explain what they're like? Thanks
Did you guys roll the valves to improve the sound? I have a ARC Ref 3 preamp that I'd intent to keep running. 
You have to specify what unit you are thinking about, as the GG and Pacific are DHT, the TRP is any and all Pentodes and the Atlantic & Golden Atlantic is no-rolling with its 4P1L pentodes (which I actually love for its linearity). Not sure what the Amber II (or is it III?) takes. 
But with that said, I think most with the upper DHT models are going new production and it’s quite an expense ($1500 to $2k) to roll and try things. In contrast you can roll new production and vintage in the TRP for anywhere from $100 to $500 a pair.