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Douk Audio F5 Pure Class A HiFi Vacuum Tube Amplifier - Single-Ended Stereo Amp for Home Audio System with RCA Inputs

4.4 out of 5 stars 15 ratings
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Voltage 1.1E+2 Volts (AC)
Manufacturer Douk Audio
Maximum supply voltage 1.1E+2 Volts (AC)
Mounting type Freestanding
Brand Douk Audio
Number of channels 2
Specification met FCC

About this item

  • Exceptional HiFi Sound: Experience pure Class A, high-fidelity sound quality with the combination of 6N1 and 6L6 vacuum tubes, designed to deliver a warm, rich, and detailed audio experience.
  • Universal Compatibility: The F5 amplifier is equipped with dual stereo RCA inputs, allowing seamless connection to a variety of audio sources, including phones, tablets, TVs, and CD players, with an input selector for easy switching.
  • Powerful Output: With a 150W power transformer and 15W ultra-linear output transformer, the amplifier provides 3.2W+3.2W output power, effortlessly driving most home speakers for an enhanced audio performance.
  • Elegant Design: The unit features an exquisite silver aluminum alloy chassis with a fine surface treatment, offering both durability and a sophisticated appearance that complements any home or office setup.
  • User-Friendly Tube Replacement: The pluggable tube socket design allows for easy tube changes, enabling users to customize their sound preferences and enjoy a variety of sonic characteristics.
› See more product details

Product details

  • Parcel Dimensions ‏ : ‎ 32.51 x 32 x 27.71 cm; 8 kg
  • Date First Available ‏ : ‎ April 7 2024
  • Manufacturer ‏ : ‎ Douk Audio
  • ASIN ‏ : ‎ B0CT8P4MZF
  • Item model number ‏ : ‎ F5 Pure Class A
  • Customer Reviews:
    4.4 out of 5 stars 15 ratings

Buy it with

Douk Audio F5 Pure Class A HiFi Vacuum Tube Amplifier - Single-Ended Stereo Amp for Home Audio System with RCA Inputs
This item: Douk Audio F5 Pure Class A HiFi Vacuum Tube Amplifier - Single-Ended Stereo Amp for Home Audio System with RCA Inputs
$419.99
Get it by Wednesday, Jul 2
Only 2 left in stock.
Sold by Douk Audio Direct and ships from 鶹 Fulfillment.
+
Riverstone Audio - Tested/Matched Pair (2 Tubes) 7-Pin GE JAN 5654W Fully-Tested Vacuum Tubes - Upgrade for 6AK5 / 6J1 / 6J1P
$59.15($29.58/count)
Get it Jul 7 - 11
In Stock
Ships from and sold by NelsonLife.
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Douk Audio HiFi Vacuum Tube 7-Band EQ Preamp Equalizer XLR Pre-Amplifier Home (T8 PRO)
$181.99
Get it by Wednesday, Jul 2
In Stock
Sold by Douk Audio Direct and ships from 鶹 Fulfillment.
Total price:$00
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Product description

Warm Tips
Pluggable tube socket design, you can also change the tubes (6L6--6P3P/EL34/6550/KT66, 6N1--6H1/ECC85) to get enjoy different sound styles.

Parameters
Audio input: 2 groups of stereo RCA
Audio output: banana speaker jacks
Tube Model: 6L6×2+6N1×1
Output power: 3.2W+3.2W
Output impedance: 4Ω/8Ω
Frequency response: 35Hz-25KHz
S/N ratio: 88db
Input sensitivity: 750mW
Input impedance: 100K
Power transformer: 150W
Working voltage: AC 110V
Dimensions(W*D*H): 230*205*160mm / 9.06*8.07*6.30in
Net weight: 6.57kg / 14.48lb
Package weight: 8.0kg / 17.64lb

Packing List
1*Tube Amplifier
1*Power Cord

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Customer reviews

4.4 out of 5 stars
15 global ratings

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Top reviews from Canada

  • Yves
    5.0 out of 5 stars SEULEMENT QUELQUES MINUTES
    Reviewed in Canada on April 21, 2025
    Verified Purchase
    SEULEMENT QUELQUES MINUTES,
    DÉJÀ, C'EST EXCELLENT.
    VOLUME OK, enceintes, 90dB de sensibilité.
    Helpful
     Report
  • 鶹 Customer
    4.0 out of 5 stars Acceptable at the price
    Reviewed in Canada on June 9, 2025
    Verified Purchase
    This amp needs to run in. I feel that it sound better after run in for 3 days. Of course when I compare it with my Audioananalogue Puccini SE it is less detail but taking into the consideration of the price I feel it is acceptable.
    Helpful
     Report

Top reviews from other countries

  • RegulusD
    5.0 out of 5 stars Great sound from a small dynamo. PROBLEM FOUND EASY FIX
    Reviewed in the United States on December 25, 2024
    Verified Purchase
    The media could not be loaded.
    This amazing Pure Class-A, as per the description, a 6w+6w small tube amplifier. ***Warning! The metal housing is indeed an old school BELL housing. Whilst checking my acoustics using hand claps I could hear the transformer housing pealing like a crystal chime. This will affect your sound signature if not dampened. I placed a silicone pad on mine and ‘voila’ ringing gone. *** The 2 KT-66's and one 6N1-P from Gold Lion in the pix I added for tube rolling and were NOT included with the price of this amp. This amp comes with an unmarked set of tubes that sound just great and I believe are Chinese made like this amplifier. This is a very simply and elegantly designed amplifier that just makes sound beautiful and deep when used with the right system and setup. Remember that this is a low power CLASS A TUBE AMP! As such it will need time to warm up to get the best sound. It also puts out quite a bit of heat so keep your room ventilated. I usually wait at least a half an hour before running a signal through the speakers. I have also found that the sound gets much richer and has a better developed sound stage as the system runs for a few hours. This produces as sweet a sound as I have heard since my youth when I had a very large Sunn tube amplifier for my string bass in college. Especially through my 60 plus year old speakers. The amp has two inputs in which is one set is a pair of standard unbalanced red and white set and a CD input which is also unbalanced. This amp actually will drive the CD player plugged into the back of the unit directly without need for a preamp! There is a very simple black push-button for switching between these two inputs. The speaker output jacks are heavy-duty and easily connected with banana plugs or bare wire if needed. My first antique speakers are 20W max 16 ohm 3-way. This amplifier will put out far more decibels than I need for my listening needs and hearing. The bass is deep and the treble is high. As an added note they have a 4 ohm and 8 ohm connection for the speakers with a common 3rd plug for the negative lead. All-in-all I have found this amp has the capability to stretch a 16 ohm speaker pair uphill and easily drive a pair of 50 Watt antique Pioneers at 8 ohms and 145 watt Cerwin Vega 280 SE's also at 8 ohms without any issues. I try to keep the volume for listening in the 55-65 decibel range typically. At these levels I can discern no distortion coming through any of the super tweeters. Pushing up above 90 will begin to show unneeded dissonance in the sound picture but I keep that down to brief excursions. I will allow that the CD transport through the Wiim Ultra has a much better quality of sound over the 1994 antique Pioneer CD player but it doesn't have that vintage sound dynamic that the old equipment imparts to these beautiful walnut cabinets ( and it cost waaay more than the $10 I paid for the Pioneer player). So I want anyone who is looking to purchase this amplifier to just remember that this is not the amp for the guy playing guitar from 'The Road Warrior' hanging from bungees. It will however, put out solid sound and plenty of volume on even a barn find set of speakers from a thrift store.
    Customer image
    RegulusD
    5.0 out of 5 stars
    Great sound from a small dynamo. PROBLEM FOUND EASY FIX

    Reviewed in the United States on December 25, 2024
    This amazing Pure Class-A, as per the description, a 6w+6w small tube amplifier. ***Warning! The metal housing is indeed an old school BELL housing. Whilst checking my acoustics using hand claps I could hear the transformer housing pealing like a crystal chime. This will affect your sound signature if not dampened. I placed a silicone pad on mine and ‘voila’ ringing gone. *** The 2 KT-66's and one 6N1-P from Gold Lion in the pix I added for tube rolling and were NOT included with the price of this amp. This amp comes with an unmarked set of tubes that sound just great and I believe are Chinese made like this amplifier. This is a very simply and elegantly designed amplifier that just makes sound beautiful and deep when used with the right system and setup. Remember that this is a low power CLASS A TUBE AMP! As such it will need time to warm up to get the best sound. It also puts out quite a bit of heat so keep your room ventilated. I usually wait at least a half an hour before running a signal through the speakers. I have also found that the sound gets much richer and has a better developed sound stage as the system runs for a few hours. This produces as sweet a sound as I have heard since my youth when I had a very large Sunn tube amplifier for my string bass in college. Especially through my 60 plus year old speakers. The amp has two inputs in which is one set is a pair of standard unbalanced red and white set and a CD input which is also unbalanced. This amp actually will drive the CD player plugged into the back of the unit directly without need for a preamp! There is a very simple black push-button for switching between these two inputs. The speaker output jacks are heavy-duty and easily connected with banana plugs or bare wire if needed. My first antique speakers are 20W max 16 ohm 3-way. This amplifier will put out far more decibels than I need for my listening needs and hearing. The bass is deep and the treble is high. As an added note they have a 4 ohm and 8 ohm connection for the speakers with a common 3rd plug for the negative lead. All-in-all I have found this amp has the capability to stretch a 16 ohm speaker pair uphill and easily drive a pair of 50 Watt antique Pioneers at 8 ohms and 145 watt Cerwin Vega 280 SE's also at 8 ohms without any issues. I try to keep the volume for listening in the 55-65 decibel range typically. At these levels I can discern no distortion coming through any of the super tweeters. Pushing up above 90 will begin to show unneeded dissonance in the sound picture but I keep that down to brief excursions. I will allow that the CD transport through the Wiim Ultra has a much better quality of sound over the 1994 antique Pioneer CD player but it doesn't have that vintage sound dynamic that the old equipment imparts to these beautiful walnut cabinets ( and it cost waaay more than the $10 I paid for the Pioneer player). So I want anyone who is looking to purchase this amplifier to just remember that this is not the amp for the guy playing guitar from 'The Road Warrior' hanging from bungees. It will however, put out solid sound and plenty of volume on even a barn find set of speakers from a thrift store.
    Images in this review
    Customer imageCustomer imageCustomer imageCustomer imageCustomer image
    Report
  • AG
    5.0 out of 5 stars Awesome little app to start your tube amp journey.
    Reviewed in the United States on May 29, 2025
    Verified Purchase
    Perhaps the best amp sounding amp produced by Douk I tried so far.
    I felt it is not powerful enough to fill up my kef q150 so I returned it and now I regret it as I miss the sound.
    Will likely buy again,

    PROS
    - Beautiful, balanced tube sound. Soft but pronounced bass, clear but laid back mid and treble. Apparently supplied tubes were decent enough.
    - Compact and easy to assemble

    CONS / WISHES
    - Needs sensitive speakers to really shine
    - I wish there was a grill (protection) for the tubes (it does have the corresponding holes though)
    - I wish I could bypass the volume

    CONCLUSION
    Highly recommended desktop / entry level tube amp.
    Report
  • Garboon
    4.0 out of 5 stars Upgraded to 6550 tubes!
    Reviewed in the United States on May 13, 2025
    Verified Purchase
    6L6 stock tubes sound kind of bad as in quite. A lavk in clarity, but after putting in 6550WE Tubes it sounds like I'm listening through crystals which is the sound signature of 6550 tubes.
    Customer image
    Garboon
    4.0 out of 5 stars
    Upgraded to 6550 tubes!

    Reviewed in the United States on May 13, 2025
    6L6 stock tubes sound kind of bad as in quite. A lavk in clarity, but after putting in 6550WE Tubes it sounds like I'm listening through crystals which is the sound signature of 6550 tubes.
    Images in this review
    Customer image
    Report
  • Allen M.
    5.0 out of 5 stars Incredible sound in small rooms or low volumes.
    Reviewed in the United States on May 16, 2025
    Verified Purchase
    Incredible build and sound quality. However, be advised this is not the optimum product for large speakers or rooms. If you are in a smaller room or listen at lower volumes, it’s magical. But if you want to crank it, while it does get loud, it will distort a little and bass will not be clear. For any other use case, it’s an incredible piece of equipment. I used it with JBL L82s in a 10x20ft room and had to return it for a much more powerful (and expensive) amp, but if I ever start a second system in my bedroom, I will be repurchasing it!
    Report
  • W. Caudle
    5.0 out of 5 stars Incredible sound!
    Reviewed in the United States on June 21, 2025
    Verified Purchase
    Incredibly warm and powerful sound. Like being in a theatre.
    Report