Hmm.. I can't find anything that specifically he used the 388 on this new album, but he has scads of songs recorded (dang..where did i read that) and when he gets a nice collection that work together he's puts out an album. Here's an interview with another band in the SF scene referencing Stoltz and several bands there as users of the 388. It was done in June of this year.
http://www.tinymixtapes.com/features/fresh-onlys
"Miles: I was hanging out with Tim and Shayde in the record store, and Tim had asked me, 'You record stuff at home?' and i was like, 'Yeah, I just bought a a Tascam 388 right before I moved out here,' and he just stopped and stared at me, and grabbed Shayde was like, 'We just bought a 388.' And we all just kinda looked at each other and were like 'OK,' you know? Just like three eyes and we all knew something was going to come of it. And the tape machine became the cornerstone. The Sisters Of Mercy have that drum machine they always accredited to the band: The 388 is the silent fifth member of the band.
Sartin: The 388 is amazing. In San Fransico, it's almost its own entity. Of the bands in SF: The Sic Alps, Thee Oh Sees, The Hospitals, and all those bands, the 388 is their machine. And Kelly Stoltz, he's like probably the Genesis-
M: The OG.
S: The original Genesis of the 388 in San Fransisco. He was the first guy to do the 388 and the first guy to be so DIY, not in a punk sense, but he was the first one to make massive, dense records with it. And every one was like, 'Holy shit, you made all this with that little machine?' And it's not too little, and it's not too big.
Yeah, and I just want to tell you guys out of those recordings I get a real vintage Nickelodeon feel, circa Pete and Pete/Hey Dude.
S: Never heard that one before, it's very American."