I haven't owned nor heard any Peachtree gear long enough to have much insight. However, what I've repeatedly heard is that the amp section is what holds it back.
How about buying a power amp here on the 'Gon and trying it out? It's not an issue of needing more power IMO, but maybe you need cleaner and flatter frequency response type power. This can help be a first step into seperates, or it can possibly fulfill what the Decco's amp(s) is missing.
If you buy the right amp for the right price and it doesn't do what you want it to do, you could sell it for minimal/no loss. Again, don't think of it as your speakers need more power, think of it as your speakers should benefit from better power.
How about buying a power amp here on the 'Gon and trying it out? It's not an issue of needing more power IMO, but maybe you need cleaner and flatter frequency response type power. This can help be a first step into seperates, or it can possibly fulfill what the Decco's amp(s) is missing.
If you buy the right amp for the right price and it doesn't do what you want it to do, you could sell it for minimal/no loss. Again, don't think of it as your speakers need more power, think of it as your speakers should benefit from better power.