The EH Scott Philharmonic (1937) was a very decent radio :
IF. response was continuously variable and flat topped at all points but the narrowest, from between 4 kHz and 32 kHz wide, which permitted 16 kHz audio
Other audio features of the Philharmonic were a 10-kHz audio notch filter, a40-watt class-A power amp employing push-pull output devices, and a two-way speaker system employing a 15-in. woofer and two five-in. tweeters.