HiFiMAN EF-100 Tube Headphone Amplifier

The HIFIMAN EF100 is a powerful hybrid headphone amplifier and integrated amplifier. Housed in its compact chassis lie three independent amplifier sections: a vacuum tube input stage works as a shared preamp, a Class AB headphone amplifier, and a Class T speaker power amplifier.

Benefiting from vacuum tube technology, both headphone amplifier and power amplifier sound warm, smooth, detailed and musical. Working as a hybrid headphone amplifier, EF100 can produce a 2w output under a 32 ohm load so it can easily drive many high performance headphones. In addition, EF100 can also serve as a hybrid power amplifier to drive speakers of moderate to high efficiency. In power amplifier mode, the amplifier output line is fully independent from the digital amplifier line used in the headphone amplifier.

Driven by front stage’s vacuum tubes, EF100 combines the warmth vacuum tubes are known for with the high efficiency of a digital amplifier. It is the best of both worlds. When EF100 is used as a power amplifier, it can give 4.5 watts per channel so it can drive HIFI speakers of moderate to high efficiency. At last, with its versatile design EF100 can bring music to life  from a variety of sources for both headphones and speaker applications.

Specifications

Input impedance: 47k
Output impedance: 32-300 Ohm  
Headphone Output:
Output voltage and output power under 30 ohm load: 7.8v, 2000 mw
Frequency response: 20-20khz +/- 0.2db
Power amplifier output: 
Each channel: 4.5 w (4 ohm load)
Frequency response: 20-20khz +/- 1db
D/N(A): 95db
Tube: 6N3J 

Payment methods accepted

Credit /Debit Card (All types accepted). Please telephone us on 01733 350878 to make payment
Paypal
Cheque
Postal Order
Bacs Transfer

Payment

All items must be paid for within 7 days of the transaction date by one of the following payment methods:

Credit Card (All types accepted)
Paypal
Cheque
Postal Order
Bacs Transfer

If you are unable to make payment within the specified time period please let us know as soon as possible.

Returns

We want you to feel happy with your purchase, so if for any reason you are not, you may send your item(s) back to us within 14 days for a full refund or exchange-free of charge.

Please note, postage costs are non refundable except in the following circumstances:

* the item you receive is different to that ordered.

* OR the item you receive is damaged or faulty.

In the above cases a full refund/exchange will be issued including any additional postage costs incurred by the buyer.*

*Please note, we can only refund up to the minimum postage amount required to send your item(s) back to us. Therefore, we always recommend that items be returned to us using royal mails 2nd class service with recorded delivery for insurance purposes.

All items must be returned to us in their original condition within 14 days of receipt. Please let us know before hand why you are planning on sending an item back to us and remember to include this information in your return. It is also vital that you include your user id & item number so we can deal with your request for a refund or exchange as quickly as possible

All refunds will be issued via your original method of payment and normally take up to 3 working days to process.