Sound
The first impression one gets when listening to music through the combination, is the astonishing calm. It is however by no means a sleepy peace, but rather the rest of intense concentration. It is precisely this concentration LCD-3 and HPA-21 are devoted to seemingly even the smallest music signal. It's really fascinating how seem to explode virtually on an absolutely "black" background every little sound and every sound, while remaining always precisely defined and contoured. This has a quality that you should have listened. Tonal, the Kombi is extremely balanced and neutral. Any showmanship it has not even necessary, because the two devices seem to transfer the tension inherent in the music totally lossless. A real exception wagon, on the other Kopfhörer/Kopfhörerverstärker- combinations will have to be measured.
Conclusion
Highest tonal neutrality, maximum dynamic and finest resolution result in a sound that the breakdown in individual criteria withdraws. What counts here is only that what it really is and only music.