Does it come with a power cord ?

No, you can use a 19v laptop charger but to get this thing fed what it needs buy a 24v 250watt power supply.

What is the low pass cut off for the subwoofer?

The frequency of the bass channel is 20hz-200hz

Would I be able to hook up a regular speaker to the "subwoofer" channel, if I wanted to individually control the volume of that one speaker?

The answer that specifies your frequency limitations is correct. If you connect a full range speaker, it will not sound good. But you can if you don't care about sound quality, in which case you should just go back under your rock and stay there.

I would want to use this for aux input only. can i set it to default to aux input? or do i have to switch from bluetooth to aux each time i power on?

It comes default in aux , there is no such switch for it , to answer your question in simple words, when you get it just connect the aux to it and don't werry about nothing else.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

ZK-TB21

Product ID: 213403491

Details

Item dimensions L x W x H
4.72 x 3.94 x
Manufacturer
DAMGOO
Maximum Supply Voltage
24 Volts (DC)
Minimum Supply Voltage
12 Volts (DC)
Voltage
24 Volts

🔊200W total output power

🔋Wide 12-24V DC input range

🎚️Adjustable treble & bass controls

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

227 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Romania.

Secure transaction

Description

🎧 Elevate your sound game — power, control, and wireless freedom in one sleek amp!

BUILT TO LAST SAFE - Advanced protections guard against overheating, voltage issues, and reverse polarity for worry-free use.
SEAMLESS CONNECTIVITY - Bluetooth 5.0 with 49ft range plus AUX input ensures effortless wireless or wired streaming.
FLEXIBLE VOLTAGE RANGE - Operates seamlessly on 12-24V DC, perfect for diverse DIY setups and power sources.
POWERHOUSE PERFORMANCE - Delivers a robust 50W+50W stereo plus 100W subwoofer output for immersive sound.
TAILORED AUDIO EXPERIENCE - Fine-tune your sound with smooth treble, bass, and subwoofer volume knobs for theater-like clarity.

The DAMGOO 2.1 Channel Subwoofer Amplifier Board packs 200W total power with dual TPA3116 chips, supporting 12-24V DC input. It features Bluetooth 5.0 and AUX inputs for versatile connectivity, plus adjustable treble, bass, and subwoofer controls for a customized audio experience. Designed for DIY wireless speaker projects, it includes multiple safety protections and delivers crisp, distortion-free sound with professional-grade efficiency.

Specifications

ASIN	B0FN8CXZSY
Best Sellers Rank	#22,606 in Electronics ( See Top 100 in Electronics ) #153 in Audio Component Amplifiers
Brand	DAMGOO
Brand Name	DAMGOO
Customer Reviews	1.0 out of 5 stars 1 Review
Item Dimensions	47.24 x 39.37 x 8.66 inches
Item dimensions L x W x H	47.24 x 39.37 x 8.66 inches
Manufacturer	DAMGOO
Maximum Output Power	200 watts
Maximum Supply Voltage	24 Volts (DC)
Minimum Supply Voltage	12 Volts (DC)
Model	DAJUNGUO ZK-TB21
Mounting Type	Freestanding
Number of Channels	2
Output Power	200 Watts
Part Number	ZK-TB21
Specification Met	Amazon's Standards
Supply Current	5 Amps
UPC	194852391963
Unit Count	1.0 Count

Reviews

C**A

Poor quality, pay more for a better product

Amp stopped working the day it arrived

24.03.2026

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

227 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Romania.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews