Studiomaster DQX2-4000e - 2x2000W Power Amplifier with DSP

Studiomaster DQX2-4000e - 2x2000W Power Amplifier with DSP

Marsoni

M251S

$1639.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Studiomaster DQX2-4000e - 2x2000W Power Amplifier with DSPPower Factor Correction (PFC) and Universal 90 250V power supply for reliable operation in various regions. The new DQX series, using the same amplifier and power supply platform as the QX series, feature a high quality DSP, with high precision and dynamic AD DA converters and an informative 3. 3 HD LCD screen. Real time monitoring is available both via the screen or via RS 485 connections, with support for receiving AES digital audio signals.

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Worked for 3 plays. My 11 week old puppy loved this item. Unfortunately, it only lasted 3 tries before the motor stopped working. $30 for a total of 30 minutes over 3 days is robbery! I'd look at another vendor for the same type of item. We charged it after each attempt but now the motor won't turn on.

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Reviewed in the United States on February 12, 2026

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M Girven

Whiting, US

★★★★★ 3

Item was returned

Color: Blue

Used it one day and partially the following day. Put on charger. Never worked again. My dog played with it but returned it as defective.

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Reviewed in the United States on April 12, 2026

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Houston, US

★★★★★ 4

Not for super chewers

Color: Blue

This ball seems to be of good quality; has held a charge well and is easy to use. Sadly, the cover lasted less than 15 minutes with our dog.... not for aggressive chewers for sure. Pretty funny to watch the hound dog jowls shake though.

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Reviewed in the United States on January 25, 2026

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Jessica S.

Chelsea, US

★★★★★ 5

Great fun for dogs!

Color: Orange

Two of our dogs really love this! It caused a lot of barking and chasing and running around trying to grab it. It's really funny to use the remote to control it (and especially make it stop when things get a little too chaotic!) It feels durable even when pawed and bumped into and stepped on. The battery life seems good. I plugged it in overnight to charge so not sure how long it took to charge, but it has lasted quite a while with the dogs playing with it and still doesn't need a charge. It's easy to screw off one side of the ball to plug it in to charge. The size is a little bigger than a tennis ball I would say and has a soft texture.

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Reviewed in the United States on January 6, 2026

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Kathy Stefanski

Dallas, US

★★★★★ 1

It doesn't work.

Color: Blue

The two halves of the ball shell come apart again and again when the dog plays with them. When it is time to recharge the core, it will not take a charge. The dog loves it, but it's unsafe to play with.

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Reviewed in the United States on January 15, 2026