Amazon has the Pyle Class T Home Mini Audio Amplifier (PFA200) for $31 with free shipping. List price: $65. Supports speakers with 2-8 ohm impedance. Features EQ controls, built-in safety features, microphone and AUX input.
Has good Amazon Reviews.
Ends 3/8. eBay has the Technical Pro Integrated Amplifier w/ Recording to USB/SD Card (IA1200) for $70 - $11 off with coupon PREP4SPRING = $59 with free shipping. Features 1,200W peak power, RCA, USB, SD, and AUX inputs.
Amazon has the August 3rd Gen Smart Lock Pro w/ Connect Hub (Silver, AUG-SL03-C02-S03) for $130 with free shipping. Retail price: $230. Features compatible with Amazon Alexa, Google Assistant, and Siri, attaches to existing deadbolt.