TEAC HA-501 Headphone Amplifier

TEAC HA-501 Headphone Amplifier

Free UK Delivery



The massive resurgence in the popularity of headphones, spurred on by the smartphone revolution, has created a renewed interest for high quality headphone amplifiers. Like the other components in the Reference 501 system this is a Dual Mono design, with each channel featuring a discrete, all Class-A circuit designed to eliminate any possibility of crosstalk and signal interference. Specialist audio-optimised MUSES8920 OpAmps help provide high-resolution analogue output for any connected headphones.
Damping factor, in conjunction with output impedance, is a measure of an amplifier stage's ability to correctly control the headphone driver's diaphragm (the element that moves and so creates sound). Adjusting the damping factor for a given pair of headphones will allow a reduction in distortion and a flatter frequency response. Low end Headphone Amplifiers don't offer such flexibility but the HA-501 provides five user-selectable Damping Factor settings.
With a frequency range of 2Hz-100kHz and 1,400mA of output power per channel (at 32 ohms impedance) the HA-501 has more than enough current drive capability not only for the majority of regular headphones (with an impedance range between 80-250 ohms) but also more esoteric, high-end 600 ohm designs. And if you do have several headphones an auto-muting function will ensure you don't get deafened when switching between models with different impedances.
As you will have gathered by now the TEAC Reference 501 concept doesn't really do compromise, either on an individual component or a collective system basis. It is a mini hi-fi system whose aim is simply to be the best of the best, with genuine audiophile credentials and offering a level of engineering, flexibility and sparkling performance that puts it, assuredly, in a class of its own.


- Full analog circuit design
- Discrete design Class-A Amplifier
- Dual Monaural design
- Active DC Servo technology
- Dual MUSES8920 Op-amps for Left and Right channels
- 1,400mW + 1,400mW Output Power (at 32 ohms)
- Damping Factor Selector
- Over-sized Toroidal-core Power Transformer
- Full-metal Jacket, Rigid construction
- A pair of XLR connectors by Neutrik for balanced audio input
- 2 pair of RCA pin connectors for unbalanced audio input on rear (Gold-plated)
- 1 stereo audio input on front (1/8” or 3.5mm Stereo Mini Jack)
- 1 stereo headphone out on front (1/4” or 6.35mm Stereo Jack)
- 1 pair of RCA pin connectors for stereo unbalanced audio output (Gold-plated)
- Switchable output line level (Fixed, Variable, Off)
- ±15V high voltage operation current achieved high S/N ratio
- Precisely machined aluminum knobs (Volume, Input Selector, Damping Factor Selector)
- Auto-muting when headphone plug is disconnected
- A 3-polar AC socket with a detachable AC cable


Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

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