TOPPING E2x2 OTG USB Audio Interface - Ultra-Linear Preamp & Powerful Headphone Amp,Optical Output, Dual Mobile Streaming, Zero-Latency, 192kHz/24bit Recording, PC/Mobile Compatible (Black)

I can't add much to the superlatives for this product but I can certainly vouch for the Topping team for taking care of their customers. My original order got lost and they were so kind as to send a replacement long after I had given up on ever getting it. I'm now the proud owner of both E1x2 OTG & E2x2 OTG interfaces, along with other DAC/Amp gear I've bought from them. Thanks!!!

Works flawlessly. Clean output. The gain is just enough for an SM57 to run live output. Headphone output power and clarity is incredible. One annoyance is that they haven't fix the exponential gain knob, you have to be super precise in the last few degrees of rotation to avoid clipping. I paid $169, and there is nothing that comes close at that price from a pure hardware performance standpoint. Have not yet tested the OTG with my phone, so I might revise the review if that doesn't work well.

This is a really well designed audio interface. It's overall look and feel reminds me of classic 2x2 audio interfaces of the past. The knobs feel really great and it has multiple knobs, which is great. you don't have to click a button to active then turn the one knob that is on the interface like other interfaces do. So you can quickly adjust levels with ease. The overall sound is great and the preamps are nice. I have tested these and should have enough power to drive even something like the sm7b. The headphone output is really great and loud and packs plenty of power. The overall feel of this interface is nice, a flat black matte finish does not pick up finger prints and gives it a professional feel. This does not include any recording software but it makes up for that with its control software of the interface. With that software you get different mixes and virtual playback routing options, loopback and OTG, so you can connect your phone or ipad and stream audio between the 2. The one downfall but seems to be a tread lately is that it is USB-C but if you are using it with a standard usb cable, it will require you to use an additional usb-c cable to provide it power. Not a big deal just be aware. Overall I would recommend this interface for small recording at home or if you travel around and want something to put in your bag to use. It does require some extra power with non usb-c devices but it does offer an on and off switch.

I've tried many interfaces... this one is the best. I was able to pump up the microphone, the previous ones couldn't do what this card does at 50 percent at maximum, and it's impossible to convey how much the headphones pump up... in this price range this is the top... there are no equals...

This interface is wonderful. The included software (mixing software) is very sophisticated to my amateur eyes and is fully capable of my mixing needs. Sound is outstanding. I am using this as much a a mixer for public presentations using a microphone and an ipad sending out to powered speakers. I couldn't be happier!

Not ready for mobile-only use, lots of bugs. It would consistently forget the output mix ("Mix A") and just not have one selected, so it usually made no sound at all - firmware update did not fix it as of July 2025. You could of course change this easily from the desktop software, but if you power-cycle without the desktop driver it forgets again, so it stayed silent unless my PC was connected. ADC sounds lovely, the headphones also when they worked. Two things: they should install the rubber feet so it doesn't tip over when you plug in an XLR cable, and even if you plug in a power cable (I tried several), often it boots up with a blinking power light.

Physically the interface feels sturdy and well made. The connectors attach firmly and with confidence. I don’t feel like if my mic cord was yanked by accident that it would pull out easily. The controls work well and are intuitive. Simple connection to my computer via a single USB-C cable. I did not need to provide additional power with another USB-C cable, but you may need to depending on the output of your computer’s ports. The control software is pretty slick and allows to save mixes. For the price I think you get a lot of features and functionality. Definitely recommended!

This audio interface has elevated my recording setup. The ultra-linear preamps capture vocals and instruments with impressive clarity, and the headphone amplifier delivers clean, powerful sound. Its compatibility with both PC and mobile devices adds flexibility to my workflow. However, I found the software interface somewhat unintuitive, which made initial configuration a bit challenging.

M-audio M-Track 2x2 den geçtim, markanın hi-fi ürünleri basariliydi burada da sans vermek istedim, sorunsuz ve kaliteli

ASIOドライバのUIがわかりやすくて良いです。サウンドインターフェイス自体の周波数特性も全く癖がなく、可聴帯域でフラットです。聴感上も特に問題はありません。

箱裏のE2x2の説明図にOTG端子が無かったので、OTG無しバージョンが送られて来たと思って返品しかけましたが、箱の横に小さく貼られているシールにE2x2OTGの表記あり。ケースを開封したら、中身はちゃんとOTG端子付いてました。箱と中身が異なる場合は、訂正シールをもっと目立つように分かりやすくして欲しいです。 ちなみにWindows機で使ってますが、物は良いです。安定感も良いですし、音もクリアで癖がなく素直な印象。 特にミックスがとてもし易くなりました。

前評判通りに音は大変良いです。 最初からこの製品買っておけば良い。 音質重視ならこの製品を選んだ方が良い。★５ そこまでなら★5なんですが、 個体差だと思うけど（私以外は居ないと思う)、 ヘッドフォン出力しか試してないが、LRで音量差があって、それが使いずらい。ここだけ残念。 ボリュームでほんの少しギャングエラーがあるので、調整をそこで合わせてたのか？というような感じかな。