I replaced the Bifrost 2/64 in my main system with the Gungnir 2, and I could hear some improvement in definition, tonal qualities, and sound-stage. I am pleased with the purchase and think it was worth the money to upgrade to the Gungnir 2.
For the time being, the BIfrost 2/64 has been "cascaded" to my office system, which is largely my old system, the NAD Integrated Amplifier 356BEE driving the Infinity Modulus satellites of 1992, and the Definitive Technology Supercube 6000, with the addition of a 2024 MacMini M4Pro ... which delivers most excellent sound in my small office.