Does the HiBy FD3 have a battery?

No. It is bus-powered over USB, so it draws power from your phone, laptop or player. Expect faster battery drain on a phone during long sessions.

Which headphones can the FD3 drive?

It handles IEMs and most easy-to-drive headphones well, especially over the balanced outputs. Hard-to-drive planar headphones may want a more powerful amp.

What is the difference between the 3.5mm, 2.5mm and 4.4mm outputs?

The 3.5mm is single-ended. The 2.5mm and 4.4mm are balanced and typically give more power and better channel separation with balanced cables.

Does it work with a phone?

Yes, over USB from a smartphone or computer. You may need a USB adapter or OTG cable for your phone's port.

What audio formats does it support?

PCM up to 768kHz/32-bit, using dual ES9038Q2M DAC chips. It does not decode DSD or MQA according to the listed specs.

What comes in the box?

The FD3 unit itself. Check the listing for the included USB cable, since bundles vary.

Where is the HiBy FD3 USB Headphone Amplifier cheapest?

At Hiby Music, for $59.00, as of our latest check.

Where can I buy the HiBy FD3 USB Headphone Amplifier?

2 stores we checked sell it, including eBay, Hiby Music.

HiBy FD3 USB Headphone Amplifier

Best price now

$59.00at Hiby MusicChecked Nov 9

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Hiby Music

HiBy FD3 USB Headphone Amplifier

Best price now

$59.00at Hiby MusicChecked Nov 9

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Hiby Music

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $59.00 at Hiby Music on Nov 9.
Checked at 2 stores.

Our take on the HiBy FD3 USB Headphone Amplifier

The HiBy FD3 is a portable USB DAC and headphone amp in an all-metal body. It runs dual ES9038Q2M chips and handles PCM up to 768kHz/32-bit, with single-ended 3.5mm plus 2.5mm and 4.4mm balanced outputs. That output set is unusual at this size and makes it a flexible pick for IEMs and easier-to-drive headphones. It suits listeners who want a small desktop or pocket source for a phone or laptop; owners of power-hungry planar headphones should look at a mains-powered amp instead.

Best forPhone and laptop listeners who want better sound than a dongleIEM owners with 2.5mm or 4.4mm balanced cablesTravelers who want a metal, pocketable DAC/ampBuyers who want a balanced output without a desktop stack

Pros

Three headphone outputs, including 4.4mm and 2.5mm balanced
Dual ES9038Q2M DAC chips
High-resolution PCM support up to 768kHz/32-bit
All-metal body feels solid
Bus-powered over USB, no battery to charge

Cons

Draws power from the connected device, which can drain a phone
Limited drive for hard-to-power planar headphones
No Bluetooth or battery, so it is tethered to a source
Runs warm under sustained use

HiBy FD3 USB Headphone Amplifier prices at every store

Hiby MusicNew
In stock
$59.00Checked Nov 9
Visit Hiby Music
eBayPre-owned
Availability unknownSold by thoughtcrimesubversion (100% positive, 359 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$95.00+ $11.50 shippingChecked Nov 9
Visit eBay

Store links may earn us a commission.

HiBy FD3 USB Headphone Amplifier price history

Lowest price we've seen: $59.00 on Nov 9 at Hiby Music. Tracked across 1 store since Nov 9.

What reviewers say

Owners of the FD3 generally praise its clean, detailed sound and the rare 4.4mm balanced output in a small metal body. Common complaints center on heat and on how much power it pulls from a phone.

What people mention

Sound qualityPraisedOwners describe a clean, detailed sound with good separation on balanced outputs.
BuildPraisedThe all-metal chassis is described as solid and pocketable.
OutputsPraisedThe 4.4mm and 2.5mm balanced jacks are valued for IEM cables.
HeatCriticisedUsers report the body gets warm during longer listening sessions.
Power drawMixedSome say it pulls noticeable power from a connected phone.

Specifications

Connection Type: Wired
Headphone Jack: Yes
Media Content Source: Smartphones, Computers
Audio Outputs: 3.5mm SE, 2.5mm and 4.4mm balanced headphone outputs
Digital To Analog Converter: Yes
Audio Processing Highlights: Digital to Analog Converter
Type: USB DAC+Headphone Amp

Questions and answers

Does the HiBy FD3 have a battery?: No. It is bus-powered over USB, so it draws power from your phone, laptop or player. Expect faster battery drain on a phone during long sessions.
Which headphones can the FD3 drive?: It handles IEMs and most easy-to-drive headphones well, especially over the balanced outputs. Hard-to-drive planar headphones may want a more powerful amp.
What is the difference between the 3.5mm, 2.5mm and 4.4mm outputs?: The 3.5mm is single-ended. The 2.5mm and 4.4mm are balanced and typically give more power and better channel separation with balanced cables.
Does it work with a phone?: Yes, over USB from a smartphone or computer. You may need a USB adapter or OTG cable for your phone's port.
What audio formats does it support?: PCM up to 768kHz/32-bit, using dual ES9038Q2M DAC chips. It does not decode DSD or MQA according to the listed specs.
What comes in the box?: The FD3 unit itself. Check the listing for the included USB cable, since bundles vary.
Where is the HiBy FD3 USB Headphone Amplifier cheapest?: At Hiby Music, for $59.00, as of our latest check.
Where can I buy the HiBy FD3 USB Headphone Amplifier?: 2 stores we checked sell it, including eBay, Hiby Music.

More from HiBy

All HiBy deals and products →

Color

Black

Design Highlights

All metal body

USB Input

Yes

Digital Audio Standards

PCM 768kHZ/32Bit, DualES903802M

Portable

Yes

Quantity

1