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Topping TP21 Class T Digital Mini Amplifier with Power Adapter
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- TP21 with aluminum shell, exclusive front and CNC machining thick back panel
- Built-in automaically switching headphone amplifier,the power amplifier automatically turned off by plug in the headphone
- TP21 the first adopts Ring light LED power indicator, knob also adopts solid CNC machining aluminum knob
- The whole machine adopts Wire drawing+Sandblasting double processing Shell,beautiful & exquisite
- High-grade 24K gold-plated input/output terminals
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The Topping TP 21 is a so-called Class T integrated amplifier, based on the TA 2021 chipset. the chip makes use of a kind of "Digital Power Processing", this is, more or less, a Class D amplifier with high rate switching properties. That is why they put the word "digital" into it. Actually, there's nothing really digital inside, not in terms of D/A conversion. You can view the official TA2021 datasheet, with detailed tech specs, The Topping TP 21 is nothing else than a pure and simple application suggested by the chipset datasheet. No magic.
Build in Op amp for headphone liner boost, easy to drive any headphone in 16 Ohm~200 Ohm impedance loading,the speaker cut off automatic when the earphone jack plug in.
Totally 3000*2+220*5=7100uF super large capacity with ELNA ?Pioneer? Audiophile Grade Cap, very low ESR and high speed response sounds much clearly in detail and huge in deep bass.High grade component in use, there are Dale resistor, ELNA Caps, ALPS volume control, gold coat PCB,pure copper RCA socket with gold coat.
It will be amazed when drive to high sensitive (more than 86dB) speaker !
You can?t believe your eye but really hear the great sound from this little T amp !
Top customer reviews
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Build quality is fine, feels nice and solid and the volume control dial has a good feel. Shame about the interference because it's a dinky unit which would sit comfortably and unobtrusively under most devices on a desktop
I'm driving some pretty shabby old speakers with it in a bathroom (the amp is not inside the bathroom) and they work fine enough - mostly talk radio so no issues or experience about sound quality in my case
Overall worth the money despite the wonky instructions as long as you can find a bit of distance between the amp and whatever you're using as source
Twice I bought a "Plantronics PC Headset Speaker Switch", which was a simple solution, but not a great one because it often failed. I see that it is no longer available on Amazon.
I realised that I could just buy a stereo amplifier, and one day I wandered into a high street shop and lugged home a Cambridge Audio DR30+ amp, SL20 speakers and silly thick expensive cables. I was in a hurry so I accepted the floor model of the amp.
The first thing that I noticed with the new setup was the hiss. When I had had my headphones directly into the M-Audio Audiophile 2496 sound card, the sound was pristine. Now I had to accept hiss as the price of convenience and power. The big toroidal transformer in the amp took up a modicum of desk space, and could not have anything on top of it because it needed to vent. But it let me wake up my children with "Thus Spake Zarathustra" at full volume if I felt so inclined.
Then the left channel failed on the amp. It was within a year of purchase, but I had thrown away the paper receipt. What was I thinking, buying stuff from a physical store?
I noticed these Tripath amplifiers on Amazon. They are cheap and tiny so I gave the TP21 a try. It powers up more or less instantly. There is no hiss in the headphones. The speakers sound fine, although if I set the amp and computer volumes to maximum then there is some clipping and it doesn't blow out your eardrums or anything. Still, for normal sporadic listening this is a very good solution.
(I suppose another alternative to the switching problem is just to use a USB headset. I do use a simple Logitech USB microphone when I need one, with perfectly acceptable results. For headphones I have the Sony MDR-7506 Headphones,Wired, which are probably higher-quality than anything you could get for USB.)