The headphone amplifier is a very often underestimated part of a stereo headphone system. Its influence on the sound of better class headphones is essential. Among people with a lot of headphone knowledge and practice, there is a belief that an amplifier can cost the equivalent of headphones, and even more if you are looking for absolute sound quality. Therefore, it is a very common practice to buy headphone systems, i.e. a combination of headphones with a current and sonically matched amplifier. This gives a much better effect than buying very expensive headphones, and then using a cheap (usually based on the cheapest components) amplifier connected to the headphone output of laptops, TV sets or home theater receivers.
The common practice of using headphone outputs is also the main reason why people often invest in high-end headphones, ignoring the amplifier, which is simply identified with the only visible element in the form of a headphone output. Meanwhile, the headphone amplifier is a full-fledged element of the headphone system, just like a stereo amplifier connected to stereo speakers. People who use computers should pay attention to headphone amplifiers equipped with a DAC converter with a USB input. This type of solution guarantees a huge difference in sound compared to the standard headphone outputs integrated in other devices.
EF1000 is a hybrid headphone/speaker amplifier featuring an ultimate design that integrates 6 6922 tubes and 24 transistors for a powerful and lively response. With a headphone model as advanced as, for example, the HE-6, it is crucial that it is driven by a powerful, high-calibre headphone amplifier. The EF1000 brilliantly answers this demand.