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Product prices and availability are accurate as of Aug 18, 2026, 4:19 AM and are subject to change. Any price and availability information displayed on the retailer's site at the time of purchase will apply.
SEEXDDT 100W+100W Bass Amplifier Board Double Subwoofer 4.2 is available at Amazon. Use the price box above to jump straight to the listing.

DS18
DS18 V2HL.V2 Hi/Lo Converter 2-Channel with Speaker Emulator - High-Level Speaker Signal to Low-Level - Smart line Output 2CH High-Level Input and 2CH RCA Output
from 3 retailers

JeTuvlie
JeTuvlie ST-839 2.1CH Mini Bluetooth Amplifier, 25Wx2+40W Subwoofer Stereo Receiver with Bass & Treble Control, USB/AUX/RCA Audio Amp for Home Speakers (Power & Remote Included)
from 1 retailers

ARRAROWN
ARRAROWN ZK-1002T PRO 2.0 Channel Bluetooth 5.0 Amplifier Board 200W HiFi Subwoofer Audio AMP with Treble and Bass, BT USB and AUX Inputs, DC 12-24V 2.0 Channel Stereo AMP Module for DIY Speakers
from 2 retailers

Generic
10× DC Offset Amplifier Module Voltage Module Adjustment Circuit Board
from 1 retailers
See today's price on Amazon
We link you to Amazon's live price — never a stale one.
See price at AmazonAmazon price
Product prices and availability are accurate as of Aug 18, 2026, 4:19 AM and are subject to change. Any price and availability information displayed on the retailer's site at the time of purchase will apply.
We refresh prices regularly, but retailers move fast. If you found this item cheaper somewhere we compare, let us know and we'll take a look.