SKU: 6473545288

Air Tight ATM-2211 Mono Block Power Amplifier (Pair)

$27900.00 $31000.00
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Description

Air Tight ATM-2211 Mono Block Power Amplifier (Pair)Air Tight ATM 2211 Mono Power Amplifier (211) (Pair) SET x High Power About 20 years have passed since the launch of the ATM 211 single monaural power amplifier using 211 tube, which has been well received since its launch in 2001. Since then, we launched 211 push pull monaural power amplifier ATM 3211, which has become a turning point for the Airtight brand as well as SET ATM 300R. At an eve of 35 years anniversary as AirTight, we will launch the new

Air Tight ATM-2211

Mono Power Amplifier (211) (Pair)

SET x High Power

About 20 years have passed since the launch of the ATM-211 single-monaural power amplifier using 211 tube, which has been well received since its launch in 2001. Since then, we launched 211 push-pull monaural power amplifier ATM-3211, which has become a turning point for the Airtight brand as well as SET ATM-300R. At an eve of 35 years anniversary as AirTight, we will launch the new 211 single monaural power amplifier ATM-2211.

This time, we decided not to use the overall Negative Feedback (NFB) from the secondary side of the output transformer, but to apply a large amount of NFB from the plate of the 211 output tube to the first stage. This is because the sound penetrating power and the energy feeling are emphasized rather than the so-called characteristic improvement. The operating point of each components of the circuit were designed more strict, and increased the output to 32W. ATM-2211 uses fixed bias method and DC ignition for the filament.

For the Ip monitor and bias meter, we installed a large vertical edgewise type for easier viewing and adjustment setting. Replacing 211 output tube is easy as a dial corresponding to both the plate loss 75W type vintage tube 211 that exists separately from the conventional 211/VT-4C plate loss type 211. This time, we used independent power transformers for high-voltage and low-voltage which used to be integral type in past model. In addition, the choke coil, which can be said to be the heart of the single amplifier, is made of layers that do not use the traditional bobbin and are specially made to withstand high voltage. This choke coil is custom hand-crafted by Japanese craftsmen piece by piece, and it help to realizes a sound stage with good visibility and dynamic low range sound. For the output transformer, we installed high output type made by Hashimoto Electric Co., Ltd., for better response of the low region.

The main chassis is AirTight`s traditional monocoque construction that controls resonance and keep mechanical strength of the amplifier. A thick pure copper sub-chassis is suspended from the main chassis to support the main amplification board and the power supply section on which the large block capacitor is placed. The main chassis has a structure that uses a threaded stud where the head of the screw is externally invisible, and this ensure electrical conductivities by pressing the boss itself into the chassis. The thick front panel was machined from a thick Aluminum Block.

Loudspeaker terminals made by WBT of Germany are separately equipped for high (8Ω) and low (4Ω) output (16Ω can be selected as a factory set option). The input terminal is equipped with selectable RCA and XLR terminal. When the power is turned on, a built-in timer relay activates and plate voltage is applied with a time difference. This contributes to the protection of the output tube when the power is turned on and the longer life of the smoothing capacitors in the power supply section. As the 211 tube operates at very high voltage, we have carefully selected parts to withstand high voltage and long-term use.

Please enjoy the sound full of energy with the transparency of the next-generation 211 single, ATM-2211.

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SKU: 6473545288

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4.2 ★★★★★
Based on 2374 reviews
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Booksalottle
Dallas, US
★★★★★ 4
Nothing Exceptional but Gets the Job Done
Color: Blue, Size: 4.3-Quart, Color: Blue, Size: 4.3-Quart
I’ve owned this 4.5 Qt. Amazon Enameled Cast Iron Dutch Oven for almost two months and have used it three times to date. Upon arrival and at first glance, the gradient blue color is beautiful and super glossy; most importantly, the pot is heavy for its size - as it should be. It looks exactly like the product pictures, with a globular shape than square shape as others. Unfortunately, I also noticed that there was one pin hole and two tiny uneven protrusions on the enamel inside the pot. I own three other enameled cast iron cookware from two other brands (photos attached for size comparison) and performance wise, this cast iron by Amazon performs equally to them. The pot isn’t exceptional or special but it gets the job done. Other than the pin holes and protrusions, I have no complaints. This isn’t my first rodeo so when heating up the pot and while cooking, I have zero issues. I am starting the pan off at 4-Stars and will update my review as time progresses, or if I have any major issues with its durability or performance in subsequent months. For the amateur home cook, or for anyone who is new to cast iron cooking, below I’ve included tips that you may find useful while using this or any other enameled cast iron cookware. ================================ Regarding the 3 Photos and 1 video I've Attached: (Note: all photos were taken with an iPhone under kitchen lights during the evening. Photos have not been edited nor enhanced.) Photo 1: Size comparison of this Amazon Enameled Cast Iron Dutch Oven compared to three other enameled cast iron cookware that I own from two other brands. From left to right: 7 qt. Tramontina, 4.5 qt. Amazon, 3 qt. Lodge 4 qt. Tramontina. Photos 2 and 3: fresh produce shown next to 4.5qt Amazon Dutch Oven for color and size contrast. Video: 4.5 qt. Amazon Enameled Cast Iron Dutch Oven on gas stove over medium heat, with food cooking. ================================ TIPS THAT YOU MAY FIND USEFUL While Using your cast iron dutch oven: (Note: I included these similar tips in my review of a different enameled cast iron pot from a different brand. My tips can apply to all enameled cast iron cookware) 1. If you find that you have issues with food sticking, it could be that you are not heating up your cast iron pot properly to prevent undue hot spots. I heat my pot up gradually starting at low, then medium, then high heat. After my pot is very hot is when I add my fat/cooking oil. As the oil is heating up in the pot, I lift it and swirl the oil around to coat all sides of the pot that will come in contact with food. 2. Take into consideration the temperature of the items you are adding to your heated pot. As a general rule for cooking: when ever possible, ensure that the items you are adding to a hot pot are at room temperature, rather than ice cold from the fridge; this will assist with even cooking. 3. Also, get comfortable with adjusting your heat by lowering and raising it based on what you’ve added to the pot. In general, you will need more heat at the beginning of the cooking process, and less heat towards the end. If you cook by recipe, I highly recommend that you read all the steps ahead before starting, so that you become familiarized with all the procedures, allowing you to maneuver accordingly when you start cooking. 4. At the exception of searing meat to achieve a brown crust, deep frying, or when caramelizing onions, you should be stirring your pot (I recommend using a wooden spoon) every few minutes when cooking in cast iron that is placed over high heat. If you are braising on the stove at low heat versus braising in the oven, the frequency of your stirring will need to be adjusted. No matter how you’re cooking though, a watchful eye on the pot plus stirring, should both be a habit not an afterthought. 5. For all cooking vessels in general but especially for cast iron: after cooking, allow your pot to cool down completely before cleaning. NEVER immerse a hot cast iron pot into cold water, nor pour cold dish water into hot pot. You risk not only being scald by dangerous steam, but you also risk weakening the enamel, therefore lessening the durability of your pots over time. 6. This cookware and others like it from Tramontina and Lodge are economical and if used correctly, will perform well for most cooking; if used correctly, they should also last for years. Nonetheless, if you can afford it, authentic enameled cast iron cookware made in France by Le Creuset is the best way to go. Le Creuset is the gold standard in cast iron cookware and their quality is second to none. I definitely recommend this Amazon dutch oven but if you can afford to splurge, Le Creuset's reputation is stellar. As a professional chef, I've used them in high end kitchens and their quality and performance is premier.
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Reviewed in the United States on July 2, 2018
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Verified Purchase
Nicholas Wilson
Omaha, US
★★★★★ 5
Nice BIG enameled cast iron dutch oven. like LeCreuset but costs less
Color: Blue, Size: 6-Quart
This is nice quality, similar to the far more costly French LeCreuset brand. I was surprised how big this model is, possibly too big for my small kitchen and limited storage space. I store it in the oven. It would be great for baking sourdough boule bread.
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Reviewed in the United States on May 13, 2026
J
Verified Purchase
JoiceMaynard
Birmingham, US
★★★★★ 5
Enamel finish
Color: Matte Navy, Size: 6-Quart
This is an amazing pot, got the 6 Qt for beautiful roast dinners and for baking bread. All comes out evenly baked. Cast Iron is best and it has a nice finish for easy clean up.
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Reviewed in the United States on April 24, 2026
M
Verified Purchase
Matt
Grantham, US
★★★★★ 5
Simple, Comfortable, and Exactly What You Expect
Style: Rack with 3 Pairs (5, 10, and 15 Pound)
These are pretty much exactly what you want from a set of dumbbells — simple, functional, and no nonsense. The neoprene coating gives them a comfortable grip and keeps them from feeling slick in your hands, especially during longer workouts or if your hands get sweaty. The coating also helps keep them from banging up floors or making as much noise compared to bare metal weights, which is nice if you’re working out at home. Weight accuracy seems fine for general fitness use, and they’ve worked great for things like accessory movements, shoulder work, lighter presses, rehab-style exercises, and general muscle toning. The shape also helps keep them from rolling around everywhere when set down. They’re not fancy, and they’re not trying to be — they’re just dependable dumbbells that do what they’re supposed to do at a fair price. If you want straightforward hand weights for home workouts without overthinking it, these are a solid buy.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
ChaCha
Birmingham, US
★★★★★ 5
Reliable, Comfortable Dumbbells I Actually Use Every Day
Style: 12 Pound, Pair, Style: 12 Pound, Pair
I’ve been using the Amazon Basics Neoprene Dumbbell Hand Weights daily, and they’ve honestly been perfect for my routine. Whether I’m doing a quick morning workout or adding resistance to a longer session, these have held up really well. The neoprene coating makes a big difference—it provides a comfortable, non-slip grip, even during longer workouts or when my hands get a little sweaty. They’re also easy to clean and don’t have that strong rubber smell some weights can have. I really appreciate the hex shape too. They stay put when I set them down (no rolling across the floor), which makes switching between exercises quick and frustration-free. The weight feels evenly distributed and well-balanced, so movements feel controlled and smooth. Overall, these are simple, no-frills dumbbells that just work. If you’re looking for reliable hand weights for everyday use—whether you’re a beginner or just need something dependable for home workouts—these are a great choice.
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Reviewed in the United States on April 14, 2026

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