Can anybody tell me definitively--no guessing please--that the aux input is stereo? Is it only inputting one channel (left or right), or summing them?

The system is just giving you a mono signal the subwoofer output on your receiver is just a mono signal unless you have a right and left output. I have never heard of right and left output before for a subwoofer, but I guess there is always a possibility.

Is this a good choice for a center channel speaker?

It may work for you, depending on your speaker, the amp on other speakers, the other speakers, your set up (assuming you have something to feed a distinct center channel) and your room. I wouldn't. How many volume controls do you want to get up and mess with? If you're trying for a home theater setup, you'll be happier with Amazon's entry level Onkyo 5.2 system at $329. Use the speakers you have and upgrade as you can afford. On the other hand if this is a dorm room, go for it.

I have a powered subwoofer but need to combine left and right channels with a cross. will this conflict with my powered sub?

probably not a good fit with a powered sub unless you are replacing the amp in that sub.

can it handle a 12 inch sub 200watts?

It can drive the speaker, but how well will depend on the efficiency of the speaker and not just the size and watts it can handle.

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G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W

Product ID: 174949513

Details

Manufacturer
Douk Audio
Maximum Supply Voltage
24 Volts (DC)
Minimum Supply Voltage
12 Volts (DC)
Mounting Type
Surface Mount
Voltage
12 Volts (DC)

⚡TI TPA3116 chip for efficient amplification

🔊100W peak power output

🎚️B/M switch for subwoofer/full-range mode

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Description

🎵 Elevate your sound game — don’t just listen, experience every beat!

POWERFUL 100 W OUTPUT - Drive 3-10 inch full-frequency or 4-12 inch subwoofers with crystal-clear sound and zero audible noise.
DUAL MODE FLEXIBILITY - Switch effortlessly between full-frequency and subwoofer modes to tailor your audio experience.
STEREO EXPANSION READY - Use two G4 amps for independent left/right channels, eliminating interference and maximizing sound purity.
UNIVERSAL COMPATIBILITY - 3.5mm AUX and RCA inputs ensure seamless connection with all your favorite audio devices.
COMPACT DURABLE DESIGN - Sleek aluminum chassis fits perfectly on your desk or HiFi setup, combining style with longevity.

The Douk Audio G4 is a compact, mono digital power amplifier delivering 100W of clean, efficient power using TI’s TPA3116 chip and dual NE5532 op-amps. It features a versatile B/M switch for subwoofer or full-frequency output, supports multiple input types, and can be paired for stereo setups. Its solid aluminum build and noise-free performance make it ideal for upgrading any HiFi or desktop audio system.

Specifications

ASIN	B081Q3VZ9V
Best Sellers Rank	#87,567 in Electronics ( See Top 100 in Electronics ) #539 in Audio Component Amplifiers
Brand	Douk Audio
Brand Name	Douk Audio
Customer Reviews	4.2 out of 5 stars 179 Reviews
Included Components	1G4 Mono Amplifier; 119V Power Supply; 1*Manual
Item Weight	240 Grams
Manufacturer	Douk Audio
Material Type	Aluminum
Maximum Output Power	100 watts
Maximum Supply Voltage	24 Volts (DC)
Minimum Supply Voltage	12 Volts (DC)
Model	DZ078_US
Mounting Type	Surface Mount
Number of Channels	1
Output Power	100 Watts
Package Type Name	Box
Part Number	DZ078_US
Supply Current	4.74 Amps
Voltage	12 Volts (DC)

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¥16091

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In stock

Sold byAmazon JapanDelivered 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 Japan.

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