Nobsound HiFi Bluetooth 5.0 6J5 Valve Tube Preamp Bass Preamplifier Stereo Audio Headphone Amplifier USB DAC APTX – Musicianbuds
Nobsound HiFi Bluetooth 5.0 6J5 Valve Tube Preamp Bass Preamplifier Stereo Audio Headphone Amplifier USB DAC APTX
(87 customer reviews)


United States Native Supplier Free Shipping. Shipping Within 24 Hours

SKU AWH4619KCF50 Category


We will ship the order to you within 24 hours after we received your payment and will also send you an email confirmation with the tracking number.

Yes. We a global company and send it to all over the world with free shipping, however if the location is Africa countries it may taken over 30-45days

Yes. You can track your order with the tracking number on our website and we will also notify you by email of the whole process of shipping tracking.

We ensure you that we will send the order to you immediately which will shorten your waiting time.

Yes. We offer refundable or return service within 30-days

The total price of the order includes all taxes. You do not have to pay any taxes.

Our website uses 256-bit SSL to encrypt all data transmission. 256-bit SSL belongs to the security level of the bank, and our website has a strong firewall. We use two payment methods, Paypal and credit card (provided by Stripe), both of them which are the top payment method companies in the world, and your credit card details will not be stored on our site. thus you can securely shop with Musician Buds.

Of course. Musician Buds has been making and selling headphones for many years. It is a mature company, with a strong research and development team of hundreds of developing engineers , from production to sales. We have a large professional factory to produce all kinds of earphones, therefore we can achieve high quality at low prices!


  • With 3 kinds of audio input(Bluetooth/USB/RCA) and 2 kinds of output(RCA/3.5mm headphone), P1 can be used as HiFi tube Preamp, USB DAC or headphone amp with HiFi clear, warm, dynamic, sweet tube sound, bringing extremely high-quality listening experience.
  • Bluetooth 5.0 (QCC3008) supporting APT-X, APT-X LL lossless transmission. PC-USB (CM6642) supporting 24bit 192KHz and compatible with Windows/Mac/Linux system, matching well with many audio devices such as iPod, Phone, MP3 players, TV, Blu-ray players, Echo Dot, CD players, etc.
  • Adopting 2PCS NE5532 classic 47 headphone amp architecture which can drive 32-300 ohm headphones, and a bypass switch is specially designed to turn on/off the tone control, more convenient to enjoy original sound or obtain more delicate sound with treble and bass control knob, adding much fun and higher playability.
  • Exquisite appearance with proper size, blue and orange light decorating vacuum tube, makes it fashionable and attractive, bringing wonderful auditory and visual enjoyment, very suitable for home and desktop audio system.


Chip Architecture: CM6642+QCC3008+NE5532+classic 47

PC-USB Input Sampling Frequency 192K/24Bit THD 0.01%
PC-USB System supported XP/W7/W8/W10/MAC/Linux Bluetooth VER 5.0
Headphone matching impedance 32-300Ω SNR 103dB
Headphone Max power output 160mW 32Ω load Working voltage DC12V
Bass & Treble Range ±6dB Product Dimension 180*118*36mm
RCA output level 2.3V Product Weight 0.47kg
Frequency Range 20Hz-20kHz(±3dB) Package Dimension 240*210*60mm

Packing List

  • 1*P1 Preamp
  • 2*6J5 Tube
  • 1*Power Supply
  • 1*USB Cable
  • 1*Bluetooth Antenna
  • 1*Manual

Brand Name






Maximum Power Per Channel


Model Number





2 (2.0)


Tube Pre-Amplifier

Audio Inputs

Stereo L/R RCA, USB, Bluetooth

Audio Outputs

Analog Audio, Headphone Jack, Preamp, Stereo L/R RCA

87 reviews for Nobsound HiFi Bluetooth 5.0 6J5 Valve Tube Preamp Bass Preamplifier Stereo Audio Headphone Amplifier USB DAC APTX

  1. P***k

    Dobra jakość dźwięku. Towar wart swojej ceny.

  2. O***n

    In Russia, they delivered fairly fast-3 days. Packaging Outer is a package, but inside all in thick factory packaging, so and lamps, and everything else is fine.
    Quality, alas, not supper-Puper, but, buying a device for such a price, it is necessary to understand, what you’re counting on. The amplifier tube itself is not bad, but everything else is still on the chips-and the DAC, and Bluetooth, and the chips also cost good money. Subjective I liked the external sound card from creative, than the sound of this device, but Sound Blaster in itself contains some other mathematics, the interface for setting, and then even the driver is not put, of course no DTS and эквалайзера, sends the signal from the input to the output.
    In general, a disputed acquisition is not so expensive that it would play and throw out, but on the other hand, maybe it will serve…

  3. R***i

    Excellent product , fast delivery , thank you.

  4. f***r

    Design for this please four key

  5. AliExpress Shopper

    Small and this please high performance also compliant. Korean suits adopter up brim is licensed good

  6. V***H

    Got what I expected. A good preamplifier, a good DAC, through Bluetooth, you can also listen. I’m happy with the purchase, and I advise everyone.

  7. S***v

    Это самая лучшая покупка на али ))))) Наушники Audio-Technica ATH-M50X зазвучали по новому, появились басы, верха, громкость! Также подключил к усилителю простые колонки и они также заиграли ))) Я не аудио эксперт и возможно мне медведь на ухо наступил, я не слышу искажения АЧХ, про тёплый ламповый звук только читал, я обычный пользователь, который очень доволен остался этой чудо-коробочкой ) Одно отмечу, что звук через Bluetooth хуже, чем через USB и RCA.

  8. S***k

    Normal pre.
    Delivery 9 days to the new Urengoy. the headphones scream very much, to the pain. Put before the two-block technician, the power is above 25%!!!

  9. K***r

    Good!! 아 이 가격에 이런 소리라니. 고민하지 말고 사세요. 가성비 좋음.

  10. AliExpress Shopper

    I’m very satisfied

  11. d***k

    good product ♡

  12. d***r

    good seller*****

  13. C***g

    Well operation.

  14. c***c

    fast delivery. good quality

  15. l***r

    Preamplifier very pleasant to use. Received quickly. Looks better with 6BE6W lamps
    Replacing the 6J5.

  16. AliExpress Shopper

    23 days till Nino. The sound changes, the bottom is softer, the top is clearer. 5,2tyr 11.11
    Not a bad execution of the case. Connected to the amplifier as before. Happy with the purchase. You can take it.

  17. R***J

    I’m very satisfied. It’s so cute ,,,,

  18. AliExpress Shopper

    I am pleasantly surprised sound quality. Workmanship super. For this price really rewelacja. Recommend

  19. 0***r

    The product corresponds to the description, delivery from Moscow 8 days, very satisfied, I recommend the seller.

  20. AliExpress Shopper

    very nice & good sound 😀 😀 😀

  21. V***r

    thanks shop, i ‘ve been received the Nobsound Hifi bluetooth 5.0

  22. T***i

    All OK. Przetestowałem BT, RCA and USB. WITH each source game without reservations. Raise bass and treble as most plus.

  23. M***i

    Che dire…… ben fatto, dal suono preciso e caldo, completo di funzionalità e prezzo onesto.

  24. AliExpress Shopper

    Excellent good seller expectacilar sound

  25. AliExpress Shopper

    Just as advertised! Very satisfied!

  26. V***v

    It is very good! Excellent! The seller quickly sends the order, packs it well. It’s nice to deal with him. I recommend this seller! The item matches the description and appearance. I am fully satisfied with the item and the seller’s work. Excellent!

  27. M***k

    Sound is excellent!

  28. E***g

    received in 12 days. have not tested with speakers.

  29. Z***v

    коробка пришла вся мятая(как подарок неочень) внешне смотрится огонь, по громкости особой разницы с 200р приемником не заметил

  30. J***n

    Very nice product. Good ‘tube’ sound. Integrates well with my Linux laptop (USB and Bluetooth) and Android mobile phone (Bluetooth). Now I can connect a decent headphone to my laptop and enjoy the benefits of the DAC converter inside the Nobsound amplifier.

  31. AliExpress Shopper

    Arrived in 14 days, thanks, I recommend!
    I play music (Spotify) from my phone via Bluetooth to
    amplifier, sound quality satisfied!

  32. G***r

    very good seller with very good prices.

  33. G***z

    en perfecto estado, recomendable

  34. AliExpress Shopper

    Arrivati nei tempi di consegna. Il prodotto funziona molto bene. Zero rumore di fondo. Molto carino. Imballo perfetto.

  35. R***o

    The Nobsound pré-amplifier is great and enhances greatly the sound. Very good product!

  36. J***y

    Must say this is a quality built item which sounds excellent, have been using it for a couple of hours now and i am very happy, just what i was looking for,

  37. U***a

    I liked both the sound and the performance!
    I tested for a long time on a professional sound card and this pre.
    The difference is tangible at the level of sensations. This map with lamps sounds like a bomb!

  38. J***z

    Muy contento con este preamplificador, mejora bastante la señal que daba mi tocadiscos. Tenía dudas con el bluetooth pero va muy bien, aunque solo lo he probado a poca distancia del dispositivo. Al vincular el bluetooth hace un pequeño sonido, pero la reproducción es buena. Muy recomendable

  39. m***B

    Amazing Preamp excellent quality really happy

  40. p***r

    Very good product
    Connected in bluetooth with my iphone it allows me to listen to music on the hifi Channel
    Works very well, bluetooth connection rather fast
    The sound is of good quality, the design I like a lot
    I recommend

  41. M***L

    Very fast delivery. Very satisfied with the product

  42. V***a

    Very good and high quality. The sound is pure without any noticable noice or distortion. I tried different tubes but ended with russian 6Z1P, which has warm colorful tone with sweet mids and strong bass. You can turn on/off the equalizer and lights (blue/orange/off) for tubes. I like it very much. See pictures – used with tube amp.

  43. AliExpress Shopper

    awesome !! good quelity….very goooooooooood !!!!

  44. g***i


  45. g***i

    Beautiful and functional, sound mediocre, but improvable changing the valves. Very good buy!!

  46. B***r

    top quality! affordable hifi. beautiful finish. perfect powerfull sound using Sennheiser HD650 headphones that is 300 ohms and hard to drive

  47. R***o

    Nice design and arrived well packed. Bluetooth connects very fast although tone equalization is improved. Generally good product.

  48. M***e

    All Ok

  49. K***u

    Shipping fast and nicer

  50. A***g

    Good view. Play nice… good purchase. Recommendation for everybody.

  51. 1***r

    description conforme, bien reçu ; merci beaucoup. thank you

  52. H***t

    great product, it looks great and fast delivery, thanks a lot

  53. l***l

    звук хороший, тембр блок работает отлично, качество звука стало лучше. Как внешняя звуковая карта работает. коробка пришла немного помятая, но это не беда. А вот что расстроило, так это то, что ручку баса немного деформировало с угла, так как в коробке не предусмотрен поролон над ручками. в остальном все ок. подходящие русские лампы 6ж1п

  54. I***P

    Особого изменения звучания не заметил. но как минимум смотреть на подсвечивающиеся лампы весьма залипательно) Кстати без ламп не работает, так что вроде бы не бутафория) размером маленький совсем, думал он побольше) В целом доволен – рекомендую!))

  55. AliExpress Shopper

    Amazing preamp. Neat delivered and good quality. Very nice sound. Recommended!

  56. S***v

    Полный комплект. Реактивная доставка. Достойный продавец+++++++++++++++
    Аппарат -зверь. Использую в качестве темброблока для лампового усилителя в паре с виниловой вертушкой. Низы качает-песня. Даже со стоковыми лампами… Ни фона, ни шума…

  57. a***k

    C’est très jolie et le son est bien meilleur

  58. J***g

    배송은 2주가 안걸려 빠른편으로 생각됩니다.
    오래된 오디오에 블루투스로 연결해서 유투브뮤직을 즐기는데 좋습니다.
    소리는 대체로 부드럽게 만드는 특성이 있습니다.

  59. L***h

    great seller

  60. D***n

    Very quickly delivered, and 2 weeks.

  61. H***k

  62. U***m

    livraison assez lent sur le Congo
    dans l’ensemble tout est correct
    excellent son
    je vous conseilles ce produit

  63. D***k

    Sprzęt robi robotę

  64. s***z

    Excelente amplificador de tubos de vacío….le aporta a cualquier equipo de música una calidez y suavidad impresionante para ser un modelo chino…
    En resumen es lo esperado por su precio.
    Muy contento….

  65. C***r

    Producto en buen estado, por suerte llego bien a pesar de lo mal estado que venia la caja, se nesecita mas preocupación en el embalaje, mas protegido, es por la distancia y además la cantidad de personas que lo manipula, lo demás bien

  66. G***n

    To St. Petersburg 15 days. Preamp chose purely from the reviews of compatriots, many thanks for the detailed reviews. Drove him for four days. I liked the sound very much, right from the box without much warming up, it sounded very rich and clean and very detailed. He noticed that many sounds before were not so clear, and those who were embezzled became more delicate detail as if broken into sectors. I use a bundle of Bluetooth CD-preamps-receiver (through decoders 7.1) -The sound picture covers on all sides even now denser. I plan to experiment with Russian lamps. Of course, I did not expect a strong increase, but 15-20 percent of the sound changed this obviously. Checked on USB from the laptop hi rez files-impressive. See the overview how to get around through ASIO or WASAPI push the sound equation in Windows 10. Bluetooth also works better, the lamps pull out its meager sound. I’m happy, it’s worth it, in its price category of course.

  67. J***o

    With a built in cable grade four…
    This price for this custom drawings in at all.

  68. AliExpress Shopper

    Fairly used with wonderful sound quality that we are.

  69. I***V

    excellent sound for the money, I recommend this seller,super fast shipping

  70. F***r

    Thank you! The goods are super! Recommend!

  71. J***n

    Very good. Great sound. Looks cool and vintage. Highly recommended.

  72. M***P

    I liked it, the sound is a bomb!

  73. S***K

    Works as a preamplifier, connected to the old Technics system, through Bluetooth sound is not bad. I’m happy with the purchase.

  74. V***v

    Получил довольно быстро. Все входы-выходы работают, качество сборки отличное. Лампы в гнезда становятся туго, что хорошо. Подойдет не для всех жанров, голос звучит классно, верхи и низы не супер, но и не особо плохо. Есть поле для экспериментов с лампами.

  75. f***n

    really good preamp/ dac, the sound is really good for the price, it makes my class D less clinical ! solid build and the switches and nobs feels like quality. off course i changed the tubes for Brimars, the usb for a quality one and the power supply for less noisy smps…

  76. W***G

    The performance, performance, ㅣ random.
    Hi ㅍ hoisting ㅇ ㅣ yo ㅇ is ㄹ ㅆ ㅔ women

  77. S***k

    Equipment Works and sound good, and even better… Zobaczę are we wygrzaniu lamp will still change, it can also pomyślę about dokupieniu reputed more lamps. Presents well at my Luxmanie R1030. To which sterility, added bit softness and body, especially in bassach. Mount I impression also slightly better, przejrzyściej, hard tell whether zasluga DACA or lamp but is przyjemniej. Bluetooth not przerywa, RCA blends well Melodiki amplitunerem for cables. Not tried it connect to laptop yet. Signal on the case of iPad-a or phone (rozważę Tidal) > bluetooth> Douk-A> cables Melodiki> Luxman R-1030 > retro głosniki Grundig end with 60 years, fusion technologi but I am satisfied with effect. Shipping from Germany, ordered in Friday, came we Tuesday (no surprises type duty, Watt). Recommend

  78. K***i

    Yes, sound is very good but there is some annoying sound In beckground using both bt and USB. May be this is because of my amp, don’t know. The rest is pretty cool.

  79. S***a

    Good sound quality.

  80. Y***e


  81. AliExpress Shopper

    All as the description. When connected via BT began nicely pretty play, though zdaję realize that lamp need bask and then will ładniej :-). Workmanship very good, looks nice on the desk.

  82. AliExpress Shopper

    great product! super value for the money! sounds really good and adds nice, warm character to the sound

  83. s***n

    Apparatus gun, I advise everyone. And delivery, surprisingly came earlier, very satisfied.

  84. AliExpress Shopper

    Good product. The sound is super tube type.

  85. C***o

    Excellent finish and product quality. Tone control works OK to modify sharp and serious sounds of the audio input.

  86. V***a

    Very expeditious delivery – in 4 days.

  87. I***d

    All perfect. Arrived in advance compared to date estimated.
    Object well done. Sin a little noise disturbance on the Bluetooth link but the rest very well working and very scenografico.

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