RIGATIO
Headphoneus Supremus
Ive had the dx320 with most amps, even moded ones and i dont agree. Its a fantastic dap but the sp1k has to my ears a more refined presentation, less aggressive mids and wider soundstage. The overall sound is more laid back, very airy and spacious where the dx320 attacks more with the textures and sounds closer to the face. The dx320 has more pronounced holography (the sp1k doesnt lack in this regard but is more fluid sounding). The dx320 is more forward and punchy where the sp1k is also very dynamic but calmer and smoother overall.We, obviously have different ears. The 1K is a little rougher sounding in the upper octaves, and the DX320 can throw a much nicer sound stage IMO.
The dx320 has over double the power tho and has more amp options so its also a great product and for some, it will be a better option, especially having a new open android.
But when i want to boost the sp1k performance to another level, like definitely higher than the sp2000, i pair it with the pa10 class A amp.