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Description
Fostex HP-A3MK2 32-Bit D/A Converter With Headphone AmpBuilding upon the success of the original, the Fostex HP A3MK2 is a USB DAC that converts digital audio to analog audio. The unit is capable of handling up to a 32 bit, 192 kHz digital audio source from your computer's USB port. Additionally, the HP A3MK2 includes S PDIF optical I O that supports 32 to 96 kHz 32 bit. The HP A3MK2 features a dual RCA line output and a 1 4" headphone output that's powered by integrated headphone amplifier. The unit is
Building upon the success of the original, the Fostex HP-A3MK2 is a USB DAC that converts digital audio to analog audio. The unit is capable of handling up to a 32-bit, 192 kHz digital audio source from your computer's USB port. Additionally, the HP-A3MK2 includes S/PDIF optical I/O that supports 32 to 96 kHz / 32-bit.
The HP-A3MK2 features a dual RCA line output and a 1/4" headphone output that's powered by integrated headphone amplifier. The unit is USB bus powered regardless of input routing choice and does not have a separate AC input. The input and output routing is selectable by front panel selector buttons.
High-Quality Sound Reproduction
- High-quality sound reproduction can be easily achieved by simply connecting a USB cable to a PC.
- USB audio and optical digital audio signals from a PC can be converted to analog signals and output from the line output terminal and headphone output terminal.
- When used as a USB DAC, it operates with the USB Audio 2.0 driver of the PC (Windows or macOS) and supports up to 32-bit/192 kHz. It can be used immediately after connecting the USB cable and performing simple settings.
ESS Technology DAC
- ES9016K2M from ESS Technology is used as the DAC chip
- The HP-A3 uses a high-quality DAC chip, and the supported sampling frequency has been greatly enhanced from 24-bit/96 kHz of the HP-A3 to 32-bit/192 kHz. This allows users to enjoy higher quality sound without sacrificing ease of use.
- S/P DIF input is limited to a maximum of 96 kHz
Improved Analog Circuitry
The analog circuitry has been newly designed to match the higher supported sampling frequency, and has improved THD (Total Harmonic Distortion) and other performance features that are comparable to those of high-end products.
Gain Switch
- The headphone output amplifier gain can now be switched between Hi and Lo positions, with the Hi position providing a 10 dB increase in volume over the Lo position.
- The Hi position is effective for low-level input signals and can be used with a variety of playback sources.
Specifications
| Number of Headphone Channels | |
| Recommended Headphone Impedance | |
| Headphone Output Power | |
| Digital Chipset | |
| EQ | |
| Display |
Connectivity
| Analog Audio I/O | |
| Digital Audio I/O | |
| USB I/O | |
| Wireless |
Performance
| Frequency Response | |
| THD |
Digital Audio
| Sample Rates | |
| Bit Depths |
Compatibility
| OS Compatibility |
Power
| Power Requirements | |
| DC Input Power | |
| Power Consumption |
Physical
| Dimensions | |
| Weight |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Very sturdy toy
Color: Blue
It’s very sturdy and has a surface and handle that allows a dog to grip on for a good tug. It’s also holding up to my very, very aggressive chewer and she’s 80-90 lbs.
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Reviewed in the United States on February 4, 2026
★★★★★ 5
Very durable! Great value!
Color: Green
My dog loves this toy, heavy duty, she has not chewed it up yet!
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Reviewed in the United States on March 14, 2026
★★★★★ 5
Great dog toy!
Color: Green
This is my third or fourth purchase of the same toy. My 45 lb super chewer dog loves to chew on this and especially likes to play tug of war. He is very rough on toys and most do not last longer than a few weeks. This toy lasts about 2 years - which is amazing considering my dog plays with it every day. Eventually it breaks in half during a tug of war session, but I don’t consider that a flaw or a problem because we definitely get our money’s worth of playtime! I’m happy to buy a new one every couple of years and I will keep buying it as long as it is available.
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Reviewed in the United States on April 22, 2023
★★★★★ 5
Still going strong after three months of Doberman teeth!
Color: Green
This was one of the first toys I purchased for my adopted 4 year old Doberman Pinscher. It has been chewed, and chewed, and chewed some more. This is one of his 3 favorite toys when he has to go in his crate. As of yet there are no significant teeth marks, holes, or missing pieces. It is solid rubber, light weight compared to a similar toy he has, and just the right size to carry around in his mouth. He seems to enjoy the sensation the little rubber nubs have on his gums when he chews it. We have also used this toy to play tug of war and fetch for the same reasons listed but also because the neon green color is easy to see especially if the dog gets distracted and leaves it in the yard. When playing fetch the weight of the toy does not lead to rotator cuff surgery with repetitive throwing on the part of the dog's human! When it gets too dirty and slimy for my tolerance, it is easily washed in the laundry room sink with dish detergent and a sponge always returning to its Spic n' Span original appearance. If and when he chews this one up, I will not hesitate to replace it.
Top 3 Likes:
-Sturdy, holds up to chewing, used as a crate toy as it poses no threat from dislodged pieces
-Bright color aids in finding it outside
-Comparatively lightweight, easy to throw, and easy to clean
Top 3 Disikes:
-Potentially an aggressive chewer could dismantle
Only 1 dislike!
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Reviewed in the United States on May 23, 2024
★★★★★ 1
Cracked and breaking
Color: Green, Color: Green
Not durable
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Reviewed in the United States on May 28, 2026