SKU: 66104550874

Audio Solution - Duo - Two Channel Amplifier

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Description

Audio Solution - Duo - Two Channel AmplifierDuo by Roberto Tognon *Be sure to call us directly for the best pricing* Product is in stock and shipping. We congratulate you for researching this really HI END amplifier. The amplifier you have reviewing is a realization conceived by those who love music. What is the "Duo" amplifier? "Duo" is the natural evolution of our top of the range "Quattro" but in 2 channel edition. It was created to provide similar performance at a more accessible price,

Duo by Roberto Tognon

*Be sure to call us directly for the best pricing*
Product is in stock and shipping.

We congratulate you for researching this really HI-END amplifier.
The amplifier you have reviewing is a realization conceived by those who love music.

What is the "Duo" amplifier?

"Duo" is the natural evolution of our top of the range "Quattro" but in 2 channel edition.

It was created to provide similar performance at a more accessible price, while remaining faithful to the philosophy of achieving maximum sound quality.

It is the result of over 1 year of research and development to build a car amplifier with exciting performance.

Also for "Duo" the collaboration with Roberto Tognon was decisive.

His experience and knowledge of music do contributed to the creation and development of this project.
The "Duo" adopts innovative circuit solutions with top quality components specific for audio use and will allow you to enjoy your favorite music without losing any detail or nuance.

The excellent measurements and the very high reliability in very compact dimensions make the "Duo" the new reference for car audio 2 channel amplifiers in its price range.


Product Overview
– SANKEN audio power stage
– High current power mosfet for single pair drive
– WURTH capacitors for power stage and for audio stage
– Gold plated PCB
– Nichicon MUSE audio capacitors
– CNC milled chassis
– High quality gold plated connectors
– OLED display for manage settings
– Input sensitivity set by numbers or by voltage sensitivity


Output power @4 ohm 2 x 235W rms
Output power @2 ohm 2 x 380W rms
Output power MONO @4 ohm 1 x 760W rms
Frequency response @ 1W 4Hz – 140KHz (-3dB)
THD+N (20Hz – 20KHz @ 1W) < 0.015%
THD+N (1KHz @ 5W) < 0.007%
S/N ratio > 105dB
Min input signal voltage 1 V rms
Max input signal voltage 10 V rms (30Vpp)
Working power supply voltage 11 - 15.5V
Current draw (typical @ 4 Ohm) 20A
Current draw (max @ 4 Ohm) 40A
Idle current (typical) 1.9A
Input impedance >20KOhm // 100pF

Display for monitoring:
Voltage IN
Chassis temperature
Channels level by number
Channels level by sensitivity
Firmware version
Serial number

Over temperature protection 85° (+/- 5%)
Dimensions Length=320mm – Width=210mm – Height=85mm
Weight 4.7 Kg
Working temperature 0 - 50°c


IMPORTANT NOTES:
- Please do use at least 12mmq (6 AWG) power cable for the B+ and GND.
- Near the positive battery pole, within 30-40cm, it is necessary to mount a fuse, better waterproof if the battery is housed in the engine compartment.
- The ground connection is normally done by connecting the amplifier's "GND" terminal to the car chassis, when you do this, make sure you find a safe and reliable grounding point, if necessary, remove impurities, paint residues etc. to ensure the better contact.
- Install the amplifier away from temperature-sensitive components.
- keep at least 5 cm of air above the amplifier.

Proper installation guarantees better performance, follow these notes for installation.

- Use only shielded cables to connect the audio signal between the car radio and the amplifier, it is not necessary to use very expensive cables, but do NOT use bad cables!

- The use of good quality RCA connectors guarantees a good contact, lasting over time and reliable even after several operations of insertion.

- Shielded cables must be kept at a minimum distance of 10cm c.a. from any generators of car noise, such as power units, pumps, cables, etc.

– For power connections use only good cables, of suitable sections and protected in the engine compartment.

The cables for car-audio applications are very flexible and therefore easy to install.
- Carefully take care of the laying of the cables and operate in order to follow different routes to signal cables from power cables.

- It is a good idea that the GND ground of the amplifiers is connected to the same point, together with the audio source's same ground.

– Fix the amplifier securely, to avoid its movement and then the cables jostling.
– The top side of amplifier has to have free air around, at least 10cm.

– A well-designed and equipped system may involve the collection of various devices, if this happens, ensure adequate ventilation of the place where the amplifiers are installed
perhaps with the aid of an additional forced air flow by a fan inside the various compartments.

This amplifier is designed to work only at 12V DC from the car battery, do not attempt to power it with AC or different voltages!
Install the device in a solid way that does not affect driver's guidance
Do not place the device in very hot places (such as the engine compartment).
Make sure that the installation location is not subjected to high humidity and / or splashes of water.
Perform solid and safe connections, using only cables of adequate section and type.
It is absolutely essential to install a fuse of adequate value near of the battery.
In the installation / uninstallation and maintenance operations it is absolutely necessary to remove the fuse located near the battery.

If the device is subjected to severe shocks that could visibly damage the chassis, let it be viewed by the service center or by a professional installer.
Keep the device clean and do not obstruct normal chassis ventilation, do not use aggressive detergents for cleaning.

The maintenance's allowed to the user are set sensitivity, display setting and the replacement of the fuse with identical characteristics, (to be performed as described in the "Diagnostics" paragraph).



Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 66104550874

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4.2 ★★★★★
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Mesully01
Natrona Heights, US
★★★★★ 5
My dogs love fetching this toy, then fighting over who’s going to bring it back to me
Both of my miniature dachshunds took to this tug of war toy immediately after opening it. I liked the fact it didn’t smell terrible like most of the scented dog toys I’ve purchased in the past. Instead this one actually smells good, it’s sweet and fruity smelling. It’s extremely durable and very heavy duty. The only problem is that it’s pretty thick and heavy, especially for my small dogs. They still like playing fetch with it, then fighting over which one gets to bring it back to me. It really would have been the perfect fetching toy for them, if only it had been a little bit smaller and lighter. If you have larger sized dogs who enjoy playing fetch and tug a war, I’d recommend giving it a try.
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Reviewed in the United States on April 24, 2026
T
Toasty
Boise, US
★★★★★ 2
Good Quality Toy, but Not a Hit with My Dogs
I am a bit unsure about this toy. Unfortunately, my dogs do not seem to enjoy it very much. I thought the blueberry apple scent would make it more appealing, but they tend to lose interest almost as quickly as they start playing with it. I was hoping this would be something we could use for games like tug of war, but it just has not held their attention. That said, I may just have picky dogs, so this could be a different experience for others. The reason I gave it two stars instead of one is because the quality is actually quite nice. It feels well made and has a good overall design. However, I would be a little cautious giving it to aggressive chewers, as it seems a bit on the softer side. For dogs that are more gentle with their toys, it would likely be a better fit. The size is also great, and it has a lot of potential. It just has not gotten much use in our house, likely due to my dogs not being fans of the flavor. Overall, if you have picky pups like mine, this may not be the best choice. But for less selective or gentler dogs, it could still be a solid option
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
J
Jay
Massapequa, US
★★★★★ 3
Stretchy, but Smaller & Softer Than Expected; Berry Fragrance Dominates; May be Best 4 Puppies
I was directed to read guidelines that were on the internet, prior to use. I was not expecting that and that was a big turn-off. Basically, it's all about liability, this product has the possibility of being torn apart and I am basically warned that if a piece is chewed off, that's bigger than a grain of rice, to toss, this. I was repeatedly reminded, again and again, and again that pet safety was my responsibility. Yeah, I know that. All these suggestions and warnings should have been made clearer in the listing. Is this built to flex? Yes. Does it bend? Yes. Does it stretch? Yes. Is this rugged? That's open to debate, based on the users, for a puppy, to some degree, but their teeth are very sharp. Is this soft on teeth? I don't disagree. Does this have a durable design? Depends on the user. Floats in water? I do not doubt it. Does this have an enticing scent? For a human, yes, for a pet? Depends if your pet loves berries. This is no pigs ear/bone, so, chewing is not a natural draw that I saw, which I think may be better, because this is soft and easier to tear to pieces than expected. To motivate the first time, I found it best to initiate the tug of war, but this is smaller than I envisioned too, causing me to have to bend considerably to participate. A tennis ball in a tube sock is longer. A two-dog tug of war works best with this. Nevertheless, it's a better toy than teaching pooch to have a battle using clothing, avoiding future attractions to my socks. There is some flexibility to this. Durability is an issue. I think this would have been more interesting if it had been made out of rawhide. It does have a comfortable grip, for a human, but the toy pays a price for that with what I would consider fragility. The berry fragrance dominates, it's nice for a human, but sorry, it ain't no bacon aroma. It's like a thick heavy rubber hose. Value? In hindsight, I just do not see the value I was expecting. I mean really, a grain of rice warning not to use. Durability at issue in my eyes. Country of origin? Vietnam. Is this perfect? Not in my opinion. Rating? A strong three (3) stars at best in my eyes. This is not for a tough chewer. I have to constantly monitor its condition. It does succeed as a tug toy, but it has more limitations that I was expecting. I hope my thoughts added a bit of information.
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Reviewed in the United States on March 28, 2026
L
Verified Purchase
Liz. W
Natrona Heights, US
★★★★★ 5
Long lasting
Size: 5 in
Love these. My dogs are aggressive chewing and these last the longest.
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Reviewed in the United States on August 25, 2025
A
Verified Purchase
Adrianna
Lexington, US
★★★★★ 5
Bully proof?!
Size: 5 in
We have the cutest little pit/lab mix who destroys stuffed toys in about two seconds flat. It’s always a HUNT to find toys he won’t instantly shred. This brand has some of the best! They were in FiveBelow for a while and it was the only brand that stood up to him initially. He finally got through the first only after MONTHS so we bought a few back ups and they’re still going strong months later! They’re also not super heavy so these end up being the toys we play fetch with most often! 100% will be buying more in this line in the future!
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Reviewed in the United States on June 15, 2024

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