| The 1357 looks like an interesting topology but added input stage complexity and LTP degeneration appears to cause slightly higher input noise than 5532. While noise in summing bus is typically dominated by program, in a faders down listening test for noise, these may not do as well in that specific comparison.
I am typically suspicious that inordinately high slew rate parts may be gamed for nonlinear sample and hold applications, this part looks like it will be well behaved at audio frequencies, so my primary concern is limited to slightly more noise than part it is supposed to replace.
JR |