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30459-M1PRO
Warm Tip
Only in the condition of large dynamic music and much bass effect the VU meter will work.
Parameters
Audio input: Bluetooth / 2 groups of RCA / USB(U-disk) / Coaxial / Optical
Audio output: speaker jack / low frequency output (connect active subwoofer)
U-disk supported sampling rate: 16Bit/48KHz
U-disk supported formats: MP3/WAV/APE/FLAC
U-disk max storage capacity: 64G
Bluetooth version: 5.0
Rated output power: 200W+200W
Frequency response: 20HZ-20KHZ(±2dB)
Input impedance: 47KΩ
Output impedance: 4Ω/6Ω/8Ω
Treble and Bass range: ±10dB
Signal to noise ratio: ≥80DB
THD: ≤0.5%(1KHz)
Dimensions(W*D*H): 330*315*160mm / 12.99*12.44*6.30in
Package dimensions(W*D*H): 380*350*210mm/ 14.96*13.78*8.30in
Net weight: 7.16kg / 15.79lb
Package weight: 9.0kg / 19.84lb
Packing List
1*Tube Amplifier
1*Power Cord
Stan
Reviewed in Canada on January 1, 2025
Love the way this amp sounds just something about tub amps that makes the sound that much better and to add really cool looking unit worth the money all the way
Cool
Reviewed in Canada on July 25, 2024
If you are looking for warm sound go get ST-01 Pro.
Robert picard
Reviewed in Canada on June 29, 2024
poduit endomager chez le fabriquand avant lembalage .....jait du retouner le produit
victor
Reviewed in the United States on March 5, 2024
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Rick Schott
Reviewed in the United States on March 10, 2024
Ok so I’m running a Pro-Ject turntable through a Fosi Audio preamp. I have Klipsch R-51M bookshelf speakers on homemade stands and a Sony powered sub that came with an A/V setup many years ago.Unboxing, I was impressed with just how heavy this unit is and how heavy the cardboard boxes were. Very securely packaged.I chose this over the Dayton Audio HTA200 simply because I already have a preamp I like. The Dayton comes with phono in but I don’t need this.First impressions after setup. Setup was straight forward enough that anyone moderately experienced with stereo components won’t need the instructions. It’s a nice manual though.I started with a Phil Collins record for a couple songs. I leave the bass and treble set at the detent at 12 o’clock. Sounded great so I tried Rush Hemispheres for a full side. Really just sat there enjoying the music and sound which was so much improved across the board from the old A/V receiver I had been using. I’ve heard these need a break-in period to sound their best but mine crushes my old receiver out of the box.Then I tried my 45 rpm Dave Brubeck Time Out from Acoustic Sounds. Partway through I went over to the subwoofer to tweak the level and realized *I hadn’t plugged it into the power strip*. The subwoofer was off all this time and I didn’t miss it at all! That’s how much bass this amp was getting out of my Klipsch bookshelf speakers, and these are not speakers noted for having much bass. Amazing.I also listened to music streamed from Napster to the included Bluetooth, sounded great and my tape deck did great as well.I don’t have enough experience to say how this would compare to this amp or that amp but I like almost everything about it. I do agree with other reviews saying the remote volume is a little touchy. Doesn’t bother me, just glad to have a working remote! Also the ability to use headphones would have been nice but I guess it’s an excuse to pick up a Nobsound or Douk headphone amp :)Great job Nobsound!
R.S. Truitt
Reviewed in the United States on September 14, 2023
Well so far I absolutely love the Nobsound AV-525. I'm not having any issues with sound dropping out or hum or anything else like that. With no input at all and the volume up it's silent I did buy an upgraded power cord (ASIN: BOB53LQD2R) and have only used that with the Amp. Also using GearIT 12 AWG speaker wire which is connected to Jamo S 803-WL's. Thanks Nobsound for a very cool very quiet amp and Amazon for having all sorts of cool stuff to go with it.I thought I would update my review now that I have added a Jamo 10" Subwoofer. It's even more awesome now! I thought I might add that I have only used it with Bluetooth so far from my Samsung Galaxy 10 plus and it's flawless and I'm playing FLAC files. I love "I Robot" from the Alan Parsons Symphonic Project. This show was recorded live in the Parque de los Pies Descalzos (Barefoot Park) in Medellín, Colombia with the Medellín Philharmonic Orchestra. It's a very nice listen. Oh and it's available here on Amazon.
fernetbreakfast
Reviewed in the United States on February 18, 2023
As Alain Bouchard mentioned in his review, the sound on the amp cuts out when the volume is low. The audio itself is great and the subwoofer out is really a great feature, but also like Alain, the response from the manufacturer wasn't good and eventually I had to request a refund from Amazon directly.UPDATE 2/20/23: Just before I sent the amp back in for a refund, Douk replied with a potential fix that I'm giving a try. It's a USB FW update that addresses my issue. From Douk:"Since amplifiers will produce noise when there is no signal input, we design a signal detection function. That will silent the amp when there is no signal.But maybe the threshold is not that specific, when you only want to lower the volume, the amp will also silent itself.The original design is just to control the idle noise.We can send you a software to upgrade it and lower the threshold. Then it won't silent itself. But the noise may be slightly higher."Adjusting my review and will post back as I really do think the sound quality of this amp is superior to the others I've tried at this price point.
Alain Bouchard
Reviewed in Canada on January 10, 2023
2023/01/12: I'm very surprise that little amp give you as sound and power. I'm entirely satisfied, and I do not hesitate to recommend this beauty .2023/01/15: While the volume is in LOW position, I lost music (silence). Looks like I lost the bluetooth connexion but it's not a signal lost, it's like the bluetooth card cut the music. When I raise the volume, the music came back. There is a problem. I will try to find the source of the problem and I will come back to you. And more, the Optic Fiber input does not work, there a big noise came from the Amp when I use the OF input. It's enough!2023/01/19: Since Jan 15, I send a message to DoukAudio to tell them those problems on my AV-525 Amp, and so far, no answer from them. On their website, they write 24 hours for an answer....Unfortunately, I will sending back the Amp and ask for a reimbursement .
Alexander Nevermind
Reviewed in the United States on April 18, 2023
Honestly, for the price point, this thing is awesome. Really good tone and plenty of power and the tubes just look fantastic. I love it. Using it with two bog old schools tower speakers and a giant sub.
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