Pultec type eq

All tube
Inductors and caps
Custom wound input and output transformers.
Attenuates selected freq's
Bandwidth selects between sharp and broad.
by up to 10Db

Eq points:
Top attenuation band
4k,8k,12k,16k,20k

Middle boost band
3k,4k,5k,8k,10k,16k

Low attenuation and boost
20,30,60,90,120 Hz

Eq in/out switch