2 mentions in 2 episodes.
“I'm going through an Ampeg amp, and then a compressor, and then an LA-2A compression”
Her bass signal chain across the whole record starts with an Ampeg amp (transcribed as 'Ampex amp') before hardware compression.
“SVT Classic, the Ampeg... it just sounds like 99% the same as the amp”
Their Ampeg SVT bass amp was profiled into the Quad Cortex and judged 99% identical.