DAC-A2 Headphone Amplifier DAC with Bass Treble Controls PC-USB/Optical/Coaxial Inputs, RCA/3.5mm Headphone Ouput Digital to Analog Desktop Audio Converter DC 5V 24Bit 192kHz

The DAC-A2 is a tremendous value in audio. Not terribly expensive but the ROI is phenomenal. I pared it with the OneOdio Studio Max 1 and it's an immense joy. The Aiyima provides exactly the controls that I'm looking for while offering near exacting audio reproduction. This is a small device but it requires some connections. There are two USB cables. One cable powers the device which is required. The other USB cable allows the Aiyima to pull digital audio from the PC and converts it fantastically. The volume can be incredible and was exactly what I was looking for. Optical and Coaxial input connections are available. It's solid, feels very well made. Metal, what's not to like.

The AIYIMA DAC-A2 is a versatile desktop audio solution that significantly improves the sound quality from a PC or gaming console. The dedicated bass and treble controls allow for easy customization of the sound signature to match your headphones. It is a compact and well-built unit that provides a clean, hiss-free output, making it a great upgrade for anyone looking for better audio clarity and more power.

Edit (4/14/25): The seller saw my review and decided to work with me to see if we could fix the high pitch I was hearing. While we couldn't in the end, it does seem to be a rare issue and they offered me a full refund to purchase a new one. Changing from 3->5 stars because of the exceptional customer service. ----- I bought this DAC as an affordable option for my office setup, and overall, it performs well. The build quality is solid, with responsive dials and more than enough power for my needs. Setup was straightforward, and the sound is clear, especially at lower volumes. However, I did notice a high-pitched whistle when using the USB input from my desktop. Even turning the treble all the way down didn’t eliminate the noise entirely, so I had to lower the volume to mask it. While this issue is disappointing, it doesn’t detract too much from its usability for casual listening. If you’re looking for a budget DAC and can work around minor noise issues, this could still be a worthwhile choice.

This DAC meets my output needs for driving 37ohm headphones, but the sound isn’t centered - the left channel is slightly louder than the right at all volumes. I may return it.

Initially this unit is great - both sound quality and functionality. Unfortunately, I returned the first one and ended up having the same issue on my replacement. The issue is that after a couple of months, when adjusting the volume, there is a loud static/crackling sound when adjusting. Also, the left and right channel volumes are not consistent and it takes some trial and error to get them closely aligned again (sometimes not ending up on the volume you want). I contacted the seller and I don’t know if there was perhaps a language barrier but the response is that this is perfectly normal. I think most will agree that this is not a normal or desired behavior on a DAC where volume needs to be adjusted and it is important for left and right channels to be consistently aligned. Buy at your own risk as I can almost guarantee you will face these issues unless you do not need this device for volume adjustment.

I added this DAC to my rather "unconventional" signal chain today as a way to input from over USB from a Macbook Air. The full chain is: Macbook Air (Source, VOL 100%) AIYIMA DAC-A2 (VOL 80%) Douk EQ5 (Primary Vol Control) Douk TUBE-T5C (VOL 80% Aiyima T9 (Highs, VOL 80%) [Polk RTi A1 Tweeters] Aiyima T9 (Mids/Sub VOL 80%) [Polk RTi A1 Woofers Polk PSW404 Sub (from pre-out on Mids/Sub Aiyima T9) Bass and Treble controls on DAC-A2 and Douk TUBE-T5C are all set flat (just very slight boos to Bass on the T5C). EQ5 is used as master volume, and tone control. I'm actually very impressed with how well the DAC-A2 slotted into the signal chain with very little fiddling. I know some reviews mention "scratch" issues with the volume control, but I haven't experienced that at all. Tone and Bass pots are "clicky" so it's easy to get them centered for flat tone response. I haven't experimented with the optical input from a WIIM Pro, but that is the next step. Overall I like this configuration, just wish there was an on/off switch instead of the Volume Pot combo, but the same can be said fro the T5C. Other than a dedicated on/off switch like the T9 and perhaps a "bypass" of the tone controls I haven't got any criticism for this device (just those two suggestions). It does what it says on the tin, and price was great!

物価高の世の中に、こんなにコスパの良い商品があるのだろうか。商品の質感も良いです。所有欲を満たしてくれます。後は数年もってくれればOK。壊れれば買い替えます。

The DAC-A2 is a very solid device and incredible value for the price. Not only are you getting a quality 24-bit 192 kHz DAC, but you're also getting a headphone amplifier as well as a pre-amp with bass/treble tone controls. I'm using it for the latter to feed an Aiyima A20 amplifier and ELAC 6-ohm bookshelf speakers and everything sounds great.

Had bought a higher priced DAC to set up a headphone listening station. Was so impressed getting back into my old cd's decided to get a dac for the computer in the bedroom after starting a Tidal streaming trial, but didn't want to spend much money. This item has really surprised me. Very tiny but with tone controls and a headphone output. Using the usb input from the computer listening through headphones I was very impressed with the sound. So much so dusted off old Rotel pre and power amp feeding Coincident Conquest floor standing speakers and the sound is astounding! Busy exploring Tidal listening old tracks and artists. Bringing back a lot of fond memories.

他にDACをたくさん持っていますが、出力機器毎にDAC(or ヘッドホンアンプ)を分けないと音量調整が独立できず耳を傷めることがありますので、TV->BOSE M3スピーカ専用に購入しました。ライン出力(RCA)でもトーンコントロール回路を必ず通りますが、ここまではこのクラスとしては十分な音質です。トーンコントロール回路による音質の劣化は、普通の方なら気にしなくて良いレベルかもしれません。約5万円のスピーカを鳴らしても、ほぼ何も不満はありません。ただその先のヘッドホンアンプは結構音質が劣化します。ヘッドホンの音はおまけ程度に考えておくほうが良いのかも。ヘッドホンで良い音を聞きたい場合は、もう1クラス上のDAC-A5 PRO(できればDAC-A3がベスト)等を買いましょう。そのクラスは最初からACアダプタが付属していますので、実質的な価格差はあまりありません。少しでも安く、トーンコントロールが欲しい、小型、省エネ、5V(USB)駆動ができる、RCA接続のスピーカやヘッドホンアンプがメイン、ヘッドホンの音質は気にしないという方には適しています。

テクニカのアンプが古くて、知らないメーカーでしたが、価格が手頃でしたので購入しました。電源は5Vでしたが付属のものはないので手持ちのモバイルバッテリーを付属のUSB ケーブルと繋いで無事使えています。バッテリー駆動なのでノイズもほとんど気にならないレベルです。音質は評価はしにくいところです。悪くないが、トーンコントロールがフラットの位置が分かりにくい。そんなに繊細な耳も持っていないので。サイズもコンパクトで置場所にも困らないと思います。