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KingKo Audio KA-101 integrated amplifier Review

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Also read: Interview with founder King Ip.

“I think music in itself is healing. It’s an explosive expression of humanity. It’s something we are all touched by. No matter what culture we’re from, everyone loves music.” – Billy Joel.

The audiophile industry has seen prices rising dramatically over the last few decades and many individuals are trying to find good values wherever possible. Perhaps, as Billy Joel states, everyone loves music, but it is audiophiles who love great music packaged by great sound quality. The trouble is that the audiophile industry, and often the review press, becomes focused on promoting the upper end of the audiophile market, presenting the notion that your final system should be rather enormously expensive.

Occasionally, a product comes along that is impressive, surprising, and is also affordable. Many very expensive components are impressive, which should not be a surprise given the price, and  when an audiophile spends $20,000 on a given piece of stereo equipment, they had better be impressed and amazed and even gob-smacked. These products tend to interest me less because they are supposed do these things at these prices.

So what do most of the rest of us do? What do young audiophiles do who generally have less money to spend and generally better hearing? Some of them look to the review press or forums for solid values and hope the reviewers are correct and that this week’s cheap wonder gizmo will be excellent. Unfortunately, many a time the product is a largely hollow endeavor.

Many audiophiles have discovered some ear pleasing advantages with tube amplifiers, many find a higher sense of musical satisfaction from those old fangled tube amplifiers. And like their solid-state cousins, tube amplifiers come in all sorts of shapes, sizes, and prices.

Many experienced tube lovers and reviewers find favorites in designs. They may prefer big power tubes such as the famed 211 or the 845, or they may prefer the flea power variety of the 2a3 or 45. However, some of these famed output tubes require a certain level of expense to create, which is why the big power output tubes typically run many thousands of dollars. The design requires large power transformers and physical space to safely operate. They are out of reach for audiophiles on a budget. So, what is needed is an amplifier that can retain as much of the quality as possible, in an affordable and sensible package. The desire is for an amplifier that retains the spirit of the presentation, the richness, and the beauty of our record collections, all the while allowing the audiophile to be fully engaged.

Enter the KingKo Audio KA-101.

The KA-101 is a relatively small, 12 watt-per-channel integrated amplifier from a company you’ve never heard of and retails for a price many audiophiles spend on a set of cables. Sadly, given the price, many audiophiles will dismiss it for not being expensive enough.

This amplifier is a cut above anything else I have heard at this end of the market for several reasons. Firstly, many audiophiles may have seen similar looking amplifiers from Audio Space, Line Magnetic and Antique Sound Labs and many others. You have seen these small headphone amplifiers with a little bit of power, typically 3 watts in Single Ended Triode operation, to drive some desktop speakers. Most of these amplifiers are priced from $200-$1,000 and are toys compared to the KingKo KA-101. The first surprise is that the KingKo KA-101, being a push-pull design, sounds quite substantially superior to any of these aforementioned headphone amps.

This is a surprise because SET (Single Ended Triode) amplifiers typically sound superior, provided they are competently designed. Their biggest shortcoming is that they are very low powered so they can’t drive demanding loudspeakers, which nullify their sonic advantages. SET amplifiers typically offer what fans describe as a magical, holistc presentation. An analogy to the SET sound might be that SET is equal to a fine filet minion versus solid-state design, which is the equal of ground beef. A good push-pull tube integrated would be something in between. As readers will no doubt point out, a great chef can make a great hamburger and a lousy chef can ruin a fine steak.

By going down the push-pull track, King has been able to make a solid integrated amplifier. The KingKo KA-101 is a full fledge design offering enough power to drive a credible number of speakers. While it is only 12 watts, it will be comfortable with most 90dB sensitive loudspeakers and will be able to control woofers credibly. Comparable SET units are limited only to efficient horn-like speakers with sensitivity of around 97dB+. To be clear though, no one really buys those headphone amps to be used as integrated amplifiers.

King Ip, founder of KingKo, decided to have his engineers add an extra winding on the output transformers to make a proper and serious headphone amplifier as a bonus. The latter alone justifies the price of the amplifier. The second surprise is that for the first time in 17 years, the Sennheiser HD600 opened up from its deep slumber to show its true abilities. An expansive, open, and altogether huge sound presents itself to the listener. This is a distinct departure from the generally overly polite nature so many headphone enthusiasts grumble about with this particular headphone.

The KA-101’s sound quality will inspire the user to try and possibly buy more headphones and make upgrades to their source material. Bass was tight, deep and the upper midrange and treble sparkle with a sense of space. Cymbals are no longer dulled or rounded off. Music reproduction is altogether more powerful. The very low noise floor of this amplifier is impressive because it is often stated by some headphone enthusiasts that SET has less noise than push-pull and thus are more suitable for headphones. The KA-101 is just as quiet if not more so.

18 Responses to KingKo Audio KA-101 integrated amplifier Review

  1. Bill says:

    Very interesting product. Any thoughts on KingKo’s sister brand Aidi? Seems like more elaborate designs happening there.

  2. Hi Bill.

    Aidi is a brand that King carries in his shop as a dealer. I have not heard Aidi amplifiers and I do not believe he has a hand in their design. If I find out anything about them I may try to get a hold of something from them. They do seem to offer an array of amplifiers.


  3. Geoffrey says:


    Will this amp work in a small room with 87db speakers?

    Best regards


  4. Hi Geoff

    The best answer is that it may. It depends on the impedance curve of your loudspeakers more than the sensitivity numbers. The LS-3/5a which is typically around 83dB sensitive works fine because the speakers sit around 10+ ohms. But if your speakers, dip to 3 ohms this makes the amp work harder and thus the amplifier will distort as it tries to meet the load.

    Generally, I prefer speakers that are designed specifically with tube amps and SET amps in mind. I would not try to stuff square pegs down round holes. In my experience higher sensitivity speakers sound better than low/mid sensitivity speakers. Will it work in a small room at moderate volumes? Yes. Will it be an ideal match? Probably not.

  5. Tom says:

    One issue I have with both my Grade RS2 and Sennheiser HD600 headphones (impedance switch set appropriately for each model) is that I have no volume range; earsplitting at 8 o’clock. Is there something wrong with my unit?

  6. Rupert P says:

    Hi Geoff, I use the KA101 with Dali Fazon F5 speakers which are 87db and it drives them plenty loud enough in a 16 x 14 room which opens onto my kitchen. The Fazon’s have a nominal impedance of 6 ohms and don’t drop below 4.5.

  7. Gary Quinn says:

    Hi Richard, thanks for the great review on the KA-101 as I’m now considering ordering this amp thanks to your positive feedback. Are you back in Victoria anytime soon?


  8. Charlie says:

    Can it drive kef ls50?

  9. Charlie

    It is not suitable for the LS-50.

  10. Kyle McKenna says:

    This is the sort of product that has me more and more convinced that we are now living in the golden age of audio.

  11. vyuen says:

    wanna to give a try. But will it powerful enough for my mb quart 590 mcs, 4Ohm 120W?


  12. Marty says:

    I have speakers that are also 87db at 4 ohms and because I’m not sure that the amp can drive my speakers I was wondering if they can be bridged to using two amps at 24 watts per channel?
    Thanks in advance,


    • Richard Austen says:

      Regarding power requirements – this amplifier really is better suited to higher efficiency speakers that don’t dip under 4 ohms. It is still just 12 watts per channel and ideally a 90dB sensitive speaker nominally rated as 6-8 ohms will be best. King does have a new version that has 15 watts per channel but you would have to e-mail him to determine if this would be enough for your speakers.

  13. Felipe Satizabal says:

    I am very interested in test one of this. Would you guys recommend to use on horizontal amplification? I’d be using these on the HF of a pair of Tannoy Precision 6.2. The bass can drop to 3.2 omh, so I’d be ok to leave the LF with SS AMP + tube buffer and use this one on the HF section.

    Thoughts are very welcome.

  14. Luis says:

    it is still selling. the page has no prices and does not answer greetings

  15. Sunny says:

    Why do you think it is not good for LS50? I have this setup and it sounds great to me..

    • Richard Austen says:

      The LS-50 is a very difficult speaker to drive and is not designed for tube amplifiers – the Kingko and other low powered amps no designed for 3 ohms will be pushed into distortion earlier. So at higher levels the speakers compress and sound a little too bright (to a lot too bright) for some people. If you play at lower volume levels – it will be probably be fine. King Ip tried the LS-50 in his shop to use as a demonstration speaker but didn’t feel it was the best match.

  16. Wade Souza says:

    Looking for a lower cost lower power tube amp for my home office system. I was looking at the Musical Paradise 301 or 402 but this KingKo seems like it might be a better option? Are by any chance familiar with each of these brands and can comment? Looking to keep costs around $1000 max for amp then pair with a full range speaker possibly something from Omega Loudspeakers.

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