As for your question about better setups, yes to the improved soundstage and reduced harshness (depending on the amp you choose). Not sure about the mids because I don't know the sound of the WA7's onboard amp.
WA2 certainly seems a popular choice, but I haven't heard it myself. Any of the Bottlehead amps are also a good option.
Thanks Loquah for your advice. I'll have to read up abit more on the renowned Bottlehead amps, however, I'm terrible at any DIY electronics stuff so I may ultimately shy away from it.
Also wondering if there are any DAC recommendations for the T1...