HiFi Bluetooth 5.0 Tube Power Amplifier Coax/Opt Integrated Audio Amp USB Player : �鶹��.ca: Electronics

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HiFi Bluetooth 5.0 Tube Power Amplifier Coax/Opt Integrated Audio Amp USB Player

Brand: Nobsound

34 ratings

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Eligible for Return, Refund or Replacement within 30 days of receipt

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With 5 kinds of analog and digital audio input (Bluetooth 5.0 / USB / Coaxial / Optical / 2 groups of RCA), compatible with almost all audio devices such as MP3, phone, tablet, computer, CD players etc. to meet different needs of home audio systems. U-disk input supports lossless formats such as APE, FLAC, WAV etc., easy to enjoy HiFi music.
Besides speaker output (4/6/8Ω), a low frequency output is specially designed to connect active subwoofer to build 2.1 channel audio systems, which can strengthen bass sound effects to bring more shocking experience just like in the cinema. With treble and bass control to bring more delicate sound according to your own listening style.
Integrated design of vacuum tubes and transistors, using 6U1/6A2/ECH81 tube for pre-amplificatoin, WY2P tube for rectification, the sound is clear, warm, smooth and delicate. And using 4PCS Toshiba 5200 and 4PCS 1943 transistors for power amplification, dual toroidal transformers is added that can stably output max 200W in each channel, easily to drive all home passive speakers.
Unique design and attractive appearance, exquisite black panel and retro vacuum tube are combined that looks luxurious and elegant. With dual VU meter to dynamically to decorate the listening enjoyment, and display screen can show the working status in real time, very suitable for home and desktop audio system use.[ISED Certification ID: 30459-M1PRO]

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This item: HiFi Bluetooth 5.0 Tube Power Amplifier Coax/Opt Integrated Audio Amp USB Player

$478.79

Get it by Wednesday, Jun 18

Only 4 left in stock.

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Douk Audio VU3 Dual Analog VU Meter, 2-Way Amplifier/Speaker Switch, Audio Switcher Box with DB Panel Display

$148.49

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Douk Audio ST-01 PRO 200W Bluetooth Amplifier, 2 Channel Vacuum Tube Power Amp with USB DAC/Coaxial Optical Inputs/VU Meter/Treble Bass Control for Home Theater/Stereo Speakers (PRO Version)

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Product information

Technical Details

Manufacturer	‎Nobsound
Item model number	‎DJ525
Parcel Dimensions	‎37.8 x 36.19 x 22.2 cm; 8.37 kg
ASIN	‎B0B8RYSSQ2

Additional Information

�鶹�� Rank	#48,947 in Electronics (See Top 100 in Electronics) #208 in Audio Component Amplifiers

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Product details

Parcel Dimensions ‏ : ‎ 37.8 x 36.19 x 22.2 cm; 8.37 kg
Date First Available ‏ : ‎ Aug. 20 2022
Manufacturer ‏ : ‎ Nobsound
ASIN ‏ : ‎ B0B8RYSSQ2
Item model number ‏ : ‎ DJ525

�鶹�� Rank: #48,947 in Electronics (See Top 100 in Electronics)
- #208 in Audio Component Amplifiers

Customer Reviews:
34 ratings

Product description

ISED Certification ID:
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

Compare with similar items

	This Item HiFi Bluetooth 5.0 Tube Power Amplifier Coax/Opt Integrated Audio Amp USB Player	Recommendations Douk Audio ST-01 PRO 200W Bluetooth Amplifier, 2 Channel Vacuum Tube Power Amp with USB DAC/Coaxial Optical Inputs/VU Meter/Treble Bass Control for Home Theater/Stereo Speakers (PRO Version)	�� P1 Bluetooth 5.0 GE5654 Vacuum Tube Preamplifier Hi-Fi Valve Headphone Amplifier Wireless Receiver Audio Decoder Preamp USB DAC APTX-HD [Upgrade]	�� Douk Audio T9 Vacuum Tube Phono Preamp Stereo Turntable Preamplifier with Headphone Output and Treble Bass Control for MM/MC Record Player, Home Hi-Fi Audio, Amplifier, Speaker
	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment
Price	-10%��$478.79 Was: $531.99	-10%��$155.69 Was: $172.99	-10%��$116.99 Was: $129.99	-10%��$176.39 Was: $195.99
Delivery	Get it by Wednesday, Jun 18	Get it by Monday, Jun 16	Get it by Monday, Jun 16	Get it by Monday, Jun 16
Customer ratings	4.034	4.5339	4.2967	4.532
Sold by	Nobsound Direct	Nobsound Direct	Nobsound Direct	Douk Audio Direct
connectivity tech	Bluetooth, USB	Bluetooth, Aux, USB	Bluetooth, USB	Aux
brand	Nobsound	Douk Audio	Douk Audio	Douk Audio
output type	USB	Component	USB	RCA
supported services	Spotify	Spotify	Pandora, Spotify	Spotify
output wattage	—	200 watts	—	0.25 watts

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Customer reviews

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Stan
Tub amp all the way
Reviewed in Canada on January 1, 2025
Verified Purchase

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

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Helpful

Cool
Good power
Reviewed in Canada on July 25, 2024
Verified Purchase
If you are looking for warm sound go get ST-01 Pro.

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Helpful

Alain Bouchard
Nice sound, nice look, great performance
Reviewed in Canada on January 10, 2023
Verified Purchase
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 .

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5 people found this helpful

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Robert picard
endomager
Reviewed in Canada on June 29, 2024
Verified Purchase
poduit endomager chez le fabriquand avant lembalage .....jait du retouner le produit

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Top reviews from other countries

Joe Riggins
Truely OUTSTANDING sound. Customer support was amazing.
Reviewed in the United States on April 28, 2025
Verified Purchase

This is a hard review to write.

After waiting almost two weeks for the first AV-525 to come in, I was excited but quickly disappointed. Only one channel worked and it was very crackly and muffled. After talking with �鶹�� support (which really didn't know much about audio equipment) I was quickly moved to customer service which decided to RMA it. Not only did they agree to that, But they sent me a new unit in two days. In the meantime, I did send a email to Douk audio about the issue, but they only responded 24hours and I was convinced it was a bad unit and dealt with �鶹�� on getting the new unit.

Douk was responsive and I let them know a new unit comping from �鶹��, so they simply replied to see how it worked for me.

I got the new unit in and all I can say is WOW! Everything worked, and the tube preamp made the sound sooooo much clearer and warm. I was totally blown away. DEFINITELY worth giving this item another chance.

I responded to Douk that the new unit worked beautifully and the responded asking what I thought new features should be. I gave them a list including streaming capabilities and the ability to setup a bluetooth subwoofer, among other things.

I really feel since I got the response I got from both �鶹�� and Douk audio, there is more to a purchase than just the item. It was well worth the trouble and I am completely satisified with the end result.

This Amp is just amazing. Listening to some "Nothing else Matters by Metallica" as I type this.

Kudos to �鶹�� and Douk audio. Could I have spent over $1k on something better, yes, but for the money this is a pure joy.

If you make a few thousand of anything, there are bound to be some bad apples.

I hope this helps others when making a decision.

Read more
Rick Schott
Amazing at the price point
Reviewed in the United States on March 10, 2024
Verified Purchase
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!

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Rick Schott

Amazing at the price point

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!

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R.S. Truitt
The Music and Just the Music.... Nobsound Rocks
Reviewed in the United States on September 14, 2023
Verified Purchase
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 �鶹�� 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 �鶹��.

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R.S. Truitt

The Music and Just the Music.... Nobsound Rocks

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 �鶹�� 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 �鶹��.

Images in this review

fernetbreakfast
With input low, sound cuts out completely. UPDATED
Reviewed in the United States on February 18, 2023
Verified Purchase
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 �鶹�� 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.

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victor
Good looking, nice industrial design BUT noisy
Reviewed in the United States on March 5, 2024
Verified Purchase

The media could not be loaded.

Rather high constant level of hiss. Weak amplification. The biggest problem - Level control knob as it rotates adds incredibly noticeable level of noise in the middle position. Indicator that reds as "dud" is funny and true in this case.

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