What is the working voltage of the amplifier circuit?

The amplifier circuit works at a high voltage of 26V and has a wide input working voltage range of DC 5-20V.

What type of music is this amplifier suitable for?

This amplifier is suitable for listening to vocals or string music, classic or pop music, and even provides a unique charm when playing rock.

What type of headphones can this amplifier drive?

This amplifier can easily drive most high-impedance headphones such as HD580/HD600/HD650/K701/K702/Q701/DT880/T70/T90/SR225/SR325/RS1e.

What is the advantage or disadvantage of using a power supply voltage higher than the 5v you get through the usb to dc cable?

The jump from 5V to 12V added a lot of warmth and detail but use linear supply wall-worts not the switching kind.

Is this a decent headphone amp for a turntable that has a built in pre amp?

Signal source is irrelevant as long as it is a low impedance line level.

How do I pick another power supply for this? I’d like to replace it but don’t know how to figure out if something will work with this.

Use a 12V 1000ma power adapter with a positive center and a range of 5V to 20V which is good for this amp. Check manual for any changes.

Does this amp make a popping noise in the headphones when turning it on?

No, it powers up and gradually increases the volume until it gets to its preassigned level with no popping sound, only static as it pulls in the audio signal gradually.

Does this amp require a pre-amp if I want to plug in a CD player?

This headphone amp will work fine with any CD player that has line level outputs. No preamp would be required.

I have an older tv with rca out plugged into an old headphone amp, do I need an adapter for douk amp?

No adapter is needed. The headphone amp requires DC power input, which can be provided by a normal USB port or phone charger.

I bought one of these last year to power some Sennheiser headphones with 24 ohm impedance. Should this have the power to drive 24 ohm headsets?

Yes, it can suit 18-600 ohm including 24 ohms.

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Douk Audio

Douk Audio U5 Mini Fully Balanced Headphone Amplifier for XLR 4.4mm Headsets

Item #:52544454

4.7 rating

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PKR 23741

Availability : Out of stock

Ships from Ubuy, Sold By : UBNA Distribution LLC

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Adopting original TI-NE5532 classical op amp and transistor expanding current circuit, with ultra-low distortion, and the sound is warm and delicate, full and mellow

Product Details

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Features & Benefits

Innovative circuit design with wide input working voltage
Excellent background noise index
Ultra low distortion, sound is warm and delicate
Pluggable op amp socket design for DIY fun
Mini size with exquisite appearance
Suitable for most high impedance headphones

Product Description

Douk Audio U5 Mini Fully Balanced Headphone Amplifier for XLR 4.4mm Headsets

Overview

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Customer Questions & Answers

Question : What is the working voltage of the amplifier circuit?
Answer : The amplifier circuit works at a high voltage of 26V and has a wide input working voltage range of DC 5-20V.
Question : What type of music is this amplifier suitable for?
Answer : This amplifier is suitable for listening to vocals or string music, classic or pop music, and even provides a unique charm when playing rock.
Question : What type of headphones can this amplifier drive?
Answer : This amplifier can easily drive most high-impedance headphones such as HD580/HD600/HD650/K701/K702/Q701/DT880/T70/T90/SR225/SR325/RS1e.
Question : What is the advantage or disadvantage of using a power supply voltage higher than the 5v you get through the usb to dc cable?
Answer : The jump from 5V to 12V added a lot of warmth and detail but use linear supply wall-worts not the switching kind.
Question : Is this a decent headphone amp for a turntable that has a built in pre amp?
Answer : Signal source is irrelevant as long as it is a low impedance line level.
Question : How do I pick another power supply for this? I’d like to replace it but don’t know how to figure out if something will work with this.
Answer : Use a 12V 1000ma power adapter with a positive center and a range of 5V to 20V which is good for this amp. Check manual for any changes.
Question : Does this amp make a popping noise in the headphones when turning it on?
Answer : No, it powers up and gradually increases the volume until it gets to its preassigned level with no popping sound, only static as it pulls in the audio signal gradually.
Question : Does this amp require a pre-amp if I want to plug in a CD player?
Answer : This headphone amp will work fine with any CD player that has line level outputs. No preamp would be required.
Question : I have an older tv with rca out plugged into an old headphone amp, do I need an adapter for douk amp?
Answer : No adapter is needed. The headphone amp requires DC power input, which can be provided by a normal USB port or phone charger.
Question : I bought one of these last year to power some Sennheiser headphones with 24 ohm impedance. Should this have the power to drive 24 ohm headsets?
Answer : Yes, it can suit 18-600 ohm including 24 ohms.

Customer Ratings

4.7 out of 5

197 customers ratings

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Douk Audio U5 Mini Fully Balanced Headphone Amplifier for XLR 4.4mm Headsets

The Douk Audio U5 Mini Fully Balanced Headphone Amplifier is a budget-friendly option that works best when properly powered. Users suggest getting a linear supply wall-wart with a higher voltage than the USB power plug it comes with as this enhances the sound quality. The amp works well with any low impedance signal source and does not require a preamp when used with CD players that have line level outputs. Reviews on the amp's performance are mixed, but most users find that it works well if you use good connecting cables and DAC. Some issues highlighted are that the amp can produce a lot of background noise without a clean power supply, can be inConsistent, and may have issues with sensitive headphones or in-ears. However, others appreciate its compact size, volume control, and value-for-money.

Pros

Budget-friendly
Compact size
No preamp required for CD players with line level outputs
Good volume control

Cons

Requires a high-quality power supply for best performance
May produce background noise without a clean power supply
Can be inConsistent

Important Information

Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

Douk Audio U5 Mini Fully Balanced Headphone Amplifier for XLR 4.4mm Headsets

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