Heritage Audio i73 PRO 2 USB-C Audio Interface Sage_Upload The HA-81A's preamp section is

The HA-81A's preamp section is an 80 dB

and the same high-quality digital effects

2-in/4-out high-performance Burr-Brown converters

While the SC4 was designed to operate with Apple iOS devices such as the iPhone and iPad

The cable length is about 20 cm

Heritage Audio i73 PRO 2 USB-C Audio Interface Sage_Upload The HA-81A's preamp section isHeritage Audio i73 PRO 2 USB C Audio Interface. 2x4 USB C Interface with 2 Integrated 73 Style Preamps. The first ever audio interface with two pure Class A transformer coupled 73 style preamps built in, the Heritage Audio i73 PRO 2 2x4 USB C Audio Interface lets musicians, producers, and audio engineers track with all of that classic golden era analog sound, directly into their computer. The interface features a low latency monitoring mixing console,