Simaudio Neo Ace Question

Anyone know whether the volume control is analog or digital on this all-in-one?

I don’t see the typical volume pot Simaudio uses when looking at internal photos. Read several reviews, but no discussion of this.
CD Players: Sony CDP-211; Sony DVP-S9000ES; Sony UDP-X800M2 (x2); Cambridge Audio CXC

DACs: Jolida Glass FX Tube DAC III (x2); Denafrips Ares II (x2)

Streamers: ROKU (x3); Bluesound Node 2i and Node N130 w/LHY LPS // Receivers: Yamaha RX-V775BT; Yamaha RX-V777

Preamps: B&K Ref 50; B&K Ref 5 S2; Classe CP-800 MkII; Audio Research SP16L (soon)

Amps: Niles SI-275; B&K ST125.7; B&K ST125.2; Classe CA-2300; Butler Audio TDB-5150

Speakers: Boston Acoustics CR55; Focal Chorus 705v; Wharfedale Diamond 10.2; Monitor Audio Silver-1; Def Tech Mythos One (x4)/Mythos Three Center (x2)/Mythos Two pr.; Martin Logan Electromotion ESL; Legacy Audio Victoria/Silverscreen Center; Gallo Acoustics Reference 3.1; SVS SB-1000 Pro; REL HT-1003; B&W ASW610; HifiMan HE400i

Turntable: Dual 721 Direct-Drive w/Audio Technica AT-VM95e cart

Cables: Tripp-lite 14ga. PCs, Blue Jeans Cable ICs, Philips PXT1000 ICs; Kimber Kable DV30 coaxial ICs; Canare L-4E6S XLR ICs; Kimber Kable 8PR & 8TC speaker cables.