The Holo Audio Spring 3 DAC looks like a stepped down May without the separate dual mono power supply. The 3 different levels appear to be similar offerings as those for the May. However, you can order it with the optional preamp module which will allow you to go straight to your amp. It looks to be a promising DAC.
Congrats on your May KTE ACHiPo. You’ll love it. I’ve had mine since January. Be patient and allow it to break in over time.
Happy listening!