The Gamma PS1 emulator has gained a number of significant updates since it launched as one of the first console emulators for iPhones in May. Recent updates added a new “Enhance Audio” feature and better multiplayer support, joining other key updates over the last few weeks.

Developer Benjamin Stark (aka ZodTTD) told The Verge in an email that the Enhance Audio feature in his most recent update improves audio “using reverb and interpolation effects.” He also “added Multitap emulation” for games that used Sony’s adapter that expanded the PS1’s controller port count from two to four. (That was used for games like Crash Team Racing, NBA Jam: Tournament Edition, and more.)

In other recent updates, Stark added analog stick support for games that used the Sony Dual Shock controller and the ability to switch discs without going back to the main menu for multidisc games like Metal Gear Solid. He also introduced a new “Pro” upgrade for $4.99 that turns ads off entirely.