Yes, the SUBPAC X1 includes a best-in-class ESS Sabre headphone amp that has a 2 Vrms output capable of driving both low and high-impedance headphones.
Specs include:
+130dB SNR, +122dBA DNR
-112dB THD+N, 2.0Vrms into *100kΩ
-110dB THD+N, 1.0Vrms into 32Ω
*100kΩ = 100,000Ω