The Nobsound 6P1 6.8W 2 Vacuum Tube Power Amplifier Reviewed!

Are you after some high-quality analog sound? The Nobsound 6P1 6.8W has got it. With a deep and powerful bass, and sweet and intoxicating vocals all encompassed by a graceful design, this amplifier is sure to be on proud display atop your desk or studio shelf. With VU meters and vacuum tubes on full display, you can tell that Douk Audio put as much thought into the outer design as they did the internal components.

Inside of the chassis, Douk Audio has adopted a transformer parallel output in order to reduce the internal resistance by half, thus doubling the power. Antimagnetic transformer covers have been used to shield from interference with the current and achieve the lowest static noise levels possible.

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A Great Unit With A Great Company To Back It

This little unit is compact and looks great. It would be ideal for your desktop or shelving unit, and it’s definitely going to be one of those little details that can put the finishing touch on your setup. The 6P1 default tubes are excellent right out of the box, and replacement tubes are available as needed. You can also upgrade the stock tubes if you so choose to get even better sound pumping through this little guy.

One of the things that really stands out about Douk Audio’s products in general is that they are always around to answer questions before the sale or after the sale. If you run into problems with your unit, they’ll address any questions or concerns you have right away, and that really shows the confidence they have in their manufacturing and design process.

Don’t Be Fooled

One thing that may turn you off from looking at this unit is its small size. “Don’t be fooled by the wattage, this little monster is loud enough to drive my Polk Monitor 60W pair to their sweet spot.” Multiple reviewers share this same perspective, noting that you’d be best off ignoring this rating all together and letting your ears be the judge of the volume and sound quality.

As you turn this thing up, you’ll be delighted that there is no fuzzing, cutting out, or lowered tonal qualities. Everything stays nice and smooth at all volume levels, which makes this unit very versatile and fully functional compared to some other small units that top out before the knob even reaches ten.


  • Single-ended Class A tube amp that adopts hand welding to ensure every unit projects the best sound quality possible.
  • Features a headphone output suited for 32Ω-600Ω impedance.
  • Antimagnetic transformer covers shield from current interference and allow you to use this unit with the lowest static noise levels possible.
  • A sound output that’s full of analog style. Deep and powerful bass with intoxicating sweet vocals that you’ll never want to cut off.
  • The outer design shows just how much thought and attention to detail has gone into every aspect of this amplifier.

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Customer Reviews

“Lovely little tube arm, warm and detailed..well balanced through the range.” There is no better way to describe the sound quality. You will love every note that plays through this little guy, even with the stock tubes in place, and there’s no doubt that you’ll be happy with your purchase.

The biggest critique this unit has received is that, when using headphones, there is a hum noticeable in between songs. A couple reviewers have pointed out that, during songs, this hum is not noticeable with headphones and it totally disappates if you turn the volume up higher. Additionally, “the hum is not noticeable when used as a speaker amp.”


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If you are looking for a versatile amp that is compact and looks great on your desk or shelf, this is the one to grab. The default tubes are fully functional or you can swap them out for a specific set if you have a preference, but it’s worth plugging this one in and listening to it run for yourself before making any changes. Your ears are bound to like what they hear.

1 thought on “The Nobsound 6P1 6.8W 2 Vacuum Tube Power Amplifier Reviewed!”

  1. Greetings,

    Despite the supposed hum issue with the headphone version of the Nobsound 6P1, I purchased one and it is stone, dead quiet whether using speakers or headphones. No hum, no buzz, no static, etc.

    I have a feeling it was an issue with a particular run of amps and has since be resolved by Douk Audio. Likely wonky tubes as this was the cure from one user who reported the fix to the Amazon pages.

    I have used this amp 12 hours a day, every day for five months now, and it is absolutely perfect.

    I highly recommend this amplifier. Looks beautiful! Sounds absolutely great!

    Steve Franks

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