Audio-GD Compass for sure as a starter amp/DAC. It outperforms many products twice it's price easily, and is a fantastic entry point into hi-fi audio.
However, it is NOT an extremely neutral amp, so your choice is going to depend heavily on what type of music you listen to and what headphones you have.
If you listen to rock, metal, rap, electronic, etc., then by all means pick up the Compass. It is SUPERB for these purposes. It will work best with these types of music with headphones similarly tuned for that type of music, such as Denon and Grado. That doesn't mean it will sound like crap with something like K701 or HD650, it just means that less detail oriented music through the Compass will sound better with "fun" headphones rather than reference ones.
Now, if you listen to classical, vocal, jazz, or other types of detail oriented music, and you are using your setup to sit there and analyze music, not be absorbed by it, this is not the amp for you. What this amp does fantastically, with any type of music, is let you be absorbed by the music. It is forgiving of poor headphones and recordings, allowing you to be less perturbed by flaws and just sit back and enjoy some fantastic music.
It does classical and such fine if this is what you like in your equipment, but if you want a reference setup to see all the flaws in recordings and headphones, a much better entry point would be the Little Dot DAC and any of their amps, which is a more neutral (and expensive) setup.