I see, are HD800 open-back better than T1 based on audiophile standards? I will either sell T1 to buy HD800 or keep T1.    To drive T1, I am leaning toward Schiit Bifrost and Valhalla 2 DAC/AMP combo. I hope spending $750 is going to enhance my listening experience.

I was thinking of buying Sennheiser HD800, would you consider them a good replacement?

What do you think about Schiit Bifrost + lyr2 setup instead of Bifrost and Valhalla 2. Since T1 generally lacks bass, I am wondering if replacing tubes on amp will improve bass. Thanks.

I have known about this amplifier, but never got to try it. Anyway, what about DAC?

I recently purchased Beyerdynamic T1, and I am wondering if there is a combination of DAC and AMP that would effectively drive my headphones. I have already tested Schiit Modi 2 and Asgard 2, and the listening experience was underwhelming. I tried internal sound cards, such as Sound Blaster ZXR...