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Details about  Fidelity Audio HPA-100A Headphone Amplifier 5 STARS

Fidelity Audio HPA-100A Headphone Amplifier 5 STARS

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5 watchers
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New condition
£10.00 Express Delivery | See details
Item location:
Doncaster, South Yorkshire, United Kingdom
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International postage and import charges paid to Pitney Bowes Inc. Learn More- opens in a new window or tab
14 days refund, buyer pays return postage See details
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Seller assumes all responsibility for this listing.
Last updated on  02 Dec, 2013 15:42:37 GMT  View all revisions
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Item specifics

New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition
Type: Headphone Amplifier
MPN: HPA-100 Brand: Fidelity Audio
Manufacturer warranty: 2 years Model: HPA-100
Fidelity Audio: HPA-100 Headphone Amplifier

Fidelity Audio co uk

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Fidelity Audio HPA-100A Headphone Amplifier (Natural Case)


what hi-fi review

HPA-100 reviewed in the October 2011 issue of What Hi-Fi (page 22)

View this review at the What Hi-Fi website

“Give the Fidelity Audio HPA-100 Headphone Amplifier plenty of time to run in, and you’ll have one of the finest headphone amplifiers anywhere near this price”

what hi-fi review

HPA-100 reviewed in the January 2014 issue of HiFi News (page 22)

“The spaces between the notes were amazingly explicit, falling back into the inky-black silence, and piano chords decayed with uncanny accuracy”

HPA-100 reviewed in the February 2011 issue of HiFi World (page 111)

“..it was immediately noticeable that the Fidelity Audio HPA-100 Headphone Amplifier offered a more focused performance…”

“..the Fidelity Audio HPA-100 Headphone Amplifier appeared to be calmer in its approach to the music, while the more balanced presentation allowed room for its rich bass flavours to flood in. This added to the ability of the Fidelity to discern layers in the vocal performance while texture was more discernible. In effect, the vocal output was more 3D in nature. The human voice can express so many subtle emotions during a song and the Fidelity found it easy to plug into those feelings.”

“This is a well rounded and balanced piece of kit that provides welcome transparency and clarity, allowing any pair of headphones to sing.”

hi-fi-choice review

Review HiFi Choice issue 356 March 2012

“Trust me – long listening sessions with this unit will inspire not only respect, but genuine affection!”

“FUSS-FREE, compatible with any headphone, and sonically almost eerily pure and unsullied. Such honesty may not be for all tastes, but we love it”





If you appreciate wide-open, clear and detailed sound then you need to hear our HPA-100. Starting with the power supply, this solidly handmade, dual mono amp features a high quality toroidal transformer, ultrafast HEXFRED rectifier and our own Fidelity Audio smoothing capacitors.

The IEC power inlet allows you to connect a power cable of your choice. Volume control is taken care of by the Alps Blue, a volume control famed for its excellent channel balance. High-grade decoupling caps by Wima and Rubycon help to ensure the sound is never less than clean and musical, whilst also guaranteeing exceptional longevity. Extensively tested using headphones from Grado, Beyerdynamic and Sennheiser you can be sure the HPA-100 will satisfy the demands of your cans (see full specifications) and of your ears.

Compact in size and sturdy in build the HPA-100 will neatly grace any hi-fi rack or desktop. Customisable with different-coloured power LEDs, the HPA-100 can even be upgraded to HPA-200 specification.

  • Hand built to order in UK
  • Dual mono design
  • Large internal dual voltage power supply
  • Ultra Fast HexFred Rectifying Diodes
  • Super low ESR high ripple smoothing capacitors Quality Audiograde parts used throughout
  • High grade pcb copper tracks for optimal signal & voltage transfer
  • Gold Plated RCA Connectors
  • Easily drives Grado (eg 325i) , Sennheiser (eg HD650, HD800) , Beyerdynamic (eg T1 Tesla) & AKGs (eg K702 , Q701
  • IEC mains input
  • 2 year parts and labour warranty
  • 30 day money-back guarantee
  • The unit IS NOT supplied with an RCA lead
  • Mains lead supplied
  • Optional Green , Red or Orange LED indicator


Package Includes

  • HPA-100  Headphone Amplifer
  • Mains Lead
  • Instructions


Specification – HPA-100
Headphone impedance range: 12 to 600 Ohms
Headphone Jack: 1/4 inch (6.35mm)
Power output: (rms, both channels fully driven) 32 Ohms: >500mW/channel
Distortion: (THD + N @ 1kHz): 0.00003%
Frequency response: (-3dB) 32 Ohms load: 10Hz - 35kHz; 300 Ohms load: 10Hz - 38kHz
Channel balance: 0.5dB approx
Output Stage: 2x High Performance, low distortion high fidelity 250mA audio buffers
Supply voltage: AC 230V +/- 10% onto +15V & -15V DC dual power supply
Size: (approx.) W: 104 x H:56  x D:245 (mm) including controls & feet
Weight: 1.04 Kg (1.55 Kg including packaging)


Customer comments

I've been meaning to write to you to tell you how much I've been enjoying the HPA 100 headphone amp. Certainly the best headphone sound I've yet heard through my Senn. 600s - more space, better separation, more instrumental clarity, and a feeling off 'flow' to the music. It is a really good product.

Best wishes



I believe I have found a perfect pairing, that is your HPA 100 with the Denon D7000 headphones. The clean clarity of your amp including its deep but tight and controlled bass matches the smooth sound and extravagant bass of the Denons to perfection.

I have also been fortunate enough to be able to compare your amp with the Burson HA160 which is pretty good in itself but your amp has an extra dimension of transparency and detail.

Thank you for a great product.
Kind regards


Hi Brent,

I just wanted to leave you my initial impression of the HPA-100 which arrived with me last Thursday, very well built and sounded good , after approx 120 hours of continuous burn in this headphone amp leaped into a completely different league, exceptional deep controlled bass, open and very expressive in the midrange and very sweet treble , detail retrieval compares with headphone amps that have cost me 5 times the price of this one . In side by side comparison on a par with 2 of my headphone amps that cost over £1,000. In summary it punches far beyond its price point, tested with Sennheiser HD 650 (modded cable) and Klipsch Image X10's , Grado 325iS.

I am really enjoying it, as I said to you on the phone I have all sorts of high end kit, I tried it with a Linn Numerik and Benchmark DACs the best performance came from the modded Denon 3910, I also tried various mains cables, the RA signature was good but it seems to prefer a Clearer audio silverline, which has now found a permanent home .

Thanks for the great service

Paul Collins

All Fidelity Audio headphone amplifiers are hand built in the UK and come backed by our 2 year warranty.

Business seller information

Fidelity Audio
Company registration number: 4827376
VAT number: GB 829419403
I provide invoices with VAT separately displayed.

Returns policy

After receiving the item, cancel the purchase within
Return postage
14 days
Buyer pays return postage
The buyer is responsible for return postage costs.
Return policy details
At Fidelity Audio we want you to be delighted every time you deal with us. Occasionally though, we know you may want to return items. That's why if for any reason you are unhappy with your purchase, you can return it to us in its original condition, as follows:- (1) Step-By-Step Guide to Returns Please follow the following steps for returns. Failure to follow these procedures may result in your return being rejected upon receipt. (2) How do I get an RAN number? You must obtain an RAN (Returns Authorisation Number) number before making any returns. To obtain an RAN number please contact Customer Services on 01302 563124 or email sales@fidelityaudio.co.uk and provide the following information:- - The Fidelity Audio invoice number - The order reference number - The part number(s) to be returned - The reason for returning the goods (including a full fault description if there is a problem with the product) - The method of return should be confirmed with Customer Services whilst obtaining an RAN number. (3) What if there is a problem with the product? You will need to give a full and detailed description of the fault or error before an RAN number can be issued. (4) How do I pack it? All goods returned must be securely packaged and returned in equivalent packaging to that in which they were received. We cannot accept returns if goods have been damaged in transit as a result of inadequate packaging. All goods returned are at the purchaser's expense with proof of delivery being available upon request. We may request that certain items are returned using our courier in which case the cost will be deducted from the value of the return. All items must be securely packaged and returned un-damaged in their original packaging with all accessories and instruction manuals. Do not write on or mark the product packaging. Please enclose a copy of your invoice(s).
Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item. Find out more about your rights as a buyer - opens in a new window or tab and exceptions - opens in a new window or tab.

Questions and answers about this item

No questions or answers have been posted about this item.

Seller assumes all responsibility for this listing.

Postage and packaging

Item location: Doncaster, South Yorkshire, United Kingdom
Postage to: Europe
Domestic dispatch time
Will usually dispatch within 10 working days of receiving cleared payment - opens in a new window or tab.
VAT price: 20.0% (included in the listed price).
If you have questions about this VAT, please contact the seller. The actual VAT requirements and rates may vary depending on the final sale.

Payment details

Payment method Preferred/Accepted  
Credit or debit card through PayPal
PayPal preferred

Immediate payment required for this item.

Immediate payment of £360.00 is required.
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