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Qinpu A3 Integrated Amplifier

by Qinpu
| 3 answered questions

Price: $199.00 & FREE Shipping. Details
Only 4 left in stock.
Sold by Audio Advisor, Inc. and Fulfilled by Amazon. Gift-wrap available.
  • Compact integrated amplifier
  • Aluminum chassis
  • Cherry wood panel
  • Tube: 6N3 x 2
  • Output Power: 2 x 8.5 W (8 ohms RMS)
1 used from $169.02

Frequently Bought Together

Qinpu A3 Integrated Amplifier + Mediabridge 3.5mm Male to 2-Male RCA Adapter (6 Feet) - Step Down Design for iPhone, iPod, Smartphone, Tablet and MP3 Cases
Price for both: $208.99

Buy the selected items together

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Product Specifications

Brand NameQinpu
Output Wattage9

Technical Details

  • Brand Name: Qinpu
  • Model: A-3 MK
  • Output Wattage: 9

Product Details

  • Shipping Weight: 5 pounds (View shipping rates and policies)
  • ASIN: B00703LCBQ
  • Item model number: A-3 MK
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (28 customer reviews)
  • Amazon Best Sellers Rank: #32,843 in Electronics (See Top 100 in Electronics)
  • Date first available at Amazon.com: June 23, 2011

Product Description

Sometimes big things really do come in small packages. The tiny Qinpu A3 vacuum tube integrated amplifier packs a mighty high-end wallop. It delivers a beautiful room-filling 8.5 watts per channel. A pair of 6N3 output tubes contribute to the velvety and detailed sound. Audio Advisor sales rep Joe Darmogray spent a lot of time listening to the A3 and says, "I just can't see how they do it! Such high quality at this low price. It drove my Sennheiser HD800s flawlessly with power to spare. Tubes just seem to mate with headphones. They give you silky smooth highs that make you just want to keep listening. It's an integrated amp to boot! It drives my Energy C-300 just fine."

Customer Questions & Answers

Customer Reviews

This little gem sounds amazing.
ordinary bliss
The audio had a very mellow sound and the bass was much improved over the stock tubes.
William C. Walker
So far, I find the sound very pleasing, much like tube amps I once enjoyed.
Robert H. Burton

Most Helpful Customer Reviews

53 of 57 people found the following review helpful By Bob on November 14, 2012
Verified Purchase
This is an attractive and good sounding little amp for the price, but be forewarned it is not a tube amp. The amplifier stages themselves are bipolar monolithic integrated circuits like those found in just about every inexpensive amplifier and boombox. The tubes are only used in the preamp stage where the most they can do is color the sound in a "tube-like" way, without providing the benefits of an actual tube output stage (low feedback, excellent transient response and imaging).
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35 of 37 people found the following review helpful By Andrew Young on September 6, 2011
Verified Purchase
UPDATE NOV 7 2012:

I've been listening daily to this little wonder for over a year now and still can't get enough of it. This model appears to be discontinued but I'm sure the A-6000 sounds just as good (and has a lot more power output):

Qinpu - A-6000 MKII - Integrated /Headphone Amplifier

Happy listening, whatever gear you're enjoying! - Andrew

--

I've been auditioning this little Chinese hybrid tube/solid-state amp for two weeks now and here are my comments:

* Really natural and enjoyable tube amp sonics that compare well to old all-tube integrated amps that I've tried out (several vintage MacIntoshes, Marantzes, and a rheumatic Admiral).

* No, I haven't heard the newish Miniwatt, Roth, Fatman, Qinpu A6000 or Q2 (I'm cheap & also wanted headphone preamp functionality and this model fit the bill).

* A very hip "retro dork" desktop alternative to powered PC speakers or iPod speaker dock--everyone in my office stops to stare at the eerie glowing vacuum tubes

* Utterly bizarre yet charming product design: One hella-solid "ovaloid" brushed metal brick (the frame IS the heatsink), reminiscent of those 1950's space station posters from Maoist China's bygone space program ("Comrade, please experience most natural pleasure-creating heavenly musicality for such reasonable cost!
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7 of 7 people found the following review helpful By David Masson on July 4, 2012
Verified Purchase
Sound
So, this is my first legitimate tube amp and color me impressed. I have been using it with a pair of Sennheiser HD595 headphones, a pair of Stax Lambda Pro earspeakers, and a pair of Polk Audio R300 speakers. So far, it has driven them all well. I would suggest replacing the stock tubes with something a bit better though. So far, I have been using NOS GE tubes and they work great (they are a bit smaller in height than the stock tubes, but don't be alarmed, they fit and function perfectly.) The sound signature is a little dark. It has a slightly higher than neutral amount of bass but this is about the only thing that really makes it a LITTLE dark. The mids are liquid and loveable, but not syrupy. Highs are sparkly. On the Stax, I can tell the amp has plenty of speed and handles transients with aplomb. The only negative is that on insensitive headphones/speakers, it clips slightly earlier than I'd like. The Stax play really loud though before clipping.

Build
The build is pretty impressive for "Made in China." The chassis is pretty much just solid milled aluminum. This being the case, it has some serious heft. The wood is also a nice touch. The cord looks slightly sketchy. I am sure it is fine, it just looks like it was made in China if you get my meaning. There are also a couple of plastic bits, but they really don't degrade the look, but I feel that they could be replaced with glass or metal, but at $200 I am sure not complaining.

Misc
The tubes pretty much do not get hot. They get warm, but I would never really call them hot, so there is never the feeling that you are going to accidentally catch something on fire. That being said, the power transistors inside the chassis make more heat.
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8 of 9 people found the following review helpful By R. Magnuson on August 8, 2013
An attractive, interesting looking product - too bad the engineering isn't up to the industrial design.

It took me about 20 seconds of listening with a Sennheiser headset to notice the sound was muddy and had a huge bass boost. I measured the frequency response of the amp using both the CD and the AUX inputs. Both channels had a huge bass boost starting about 1000 Hz and peaking around 80-100 Hz. The boost was 12 dB for the left channel and 14 dB for the right (they couldn't even get the channels symmetrical).

Distortion and noise was acceptable.

If you have bad headsets with poor bass response or just like a whole lot of bass then it may be OK for you. If you want clear natural sound forget this device.

Also...the barrel of the RCA input jack came loose after a few cable insertions and the volume control knob rubbed against the chassis...not a good sign. It did have 2 QC stickers on it...I wonder what they checked? Give the ID designer an "A"; give everyone else a "D-".
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